1 2 OpenSSL CHANGES 3 _______________ 4 5 This is a high-level summary of the most important changes. 6 For a full list of changes, see the git commit log; for example, 7 https://github.com/openssl/openssl/commits/ and pick the appropriate 8 release branch. 9 10 Changes between 1.1.1a and 1.1.1b [26 Feb 2019] 11 12 *) Added SCA hardening for modular field inversion in EC_GROUP through 13 a new dedicated field_inv() pointer in EC_METHOD. 14 This also addresses a leakage affecting conversions from projective 15 to affine coordinates. 16 [Billy Bob Brumley, Nicola Tuveri] 17 18 *) Change the info callback signals for the start and end of a post-handshake 19 message exchange in TLSv1.3. In 1.1.1/1.1.1a we used SSL_CB_HANDSHAKE_START 20 and SSL_CB_HANDSHAKE_DONE. Experience has shown that many applications get 21 confused by this and assume that a TLSv1.2 renegotiation has started. This 22 can break KeyUpdate handling. Instead we no longer signal the start and end 23 of a post handshake message exchange (although the messages themselves are 24 still signalled). This could break some applications that were expecting 25 the old signals. However without this KeyUpdate is not usable for many 26 applications. 27 [Matt Caswell] 28 29 *) Fix a bug in the computation of the endpoint-pair shared secret used 30 by DTLS over SCTP. This breaks interoperability with older versions 31 of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2. There is a runtime 32 switch SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG (off by default) enabling 33 interoperability with such broken implementations. However, enabling 34 this switch breaks interoperability with correct implementations. 35 36 *) Fix a use after free bug in d2i_X509_PUBKEY when overwriting a 37 re-used X509_PUBKEY object if the second PUBKEY is malformed. 38 [Bernd Edlinger] 39 40 *) Move strictness check from EVP_PKEY_asn1_new() to EVP_PKEY_asn1_add0(). 41 [Richard Levitte] 42 43 *) Remove the 'dist' target and add a tarball building script. The 44 'dist' target has fallen out of use, and it shouldn't be 45 necessary to configure just to create a source distribution. 46 [Richard Levitte] 47 48 Changes between 1.1.1 and 1.1.1a [20 Nov 2018] 49 50 *) Timing vulnerability in DSA signature generation 51 52 The OpenSSL DSA signature algorithm has been shown to be vulnerable to a 53 timing side channel attack. An attacker could use variations in the signing 54 algorithm to recover the private key. 55 56 This issue was reported to OpenSSL on 16th October 2018 by Samuel Weiser. 57 (CVE-2018-0734) 58 [Paul Dale] 59 60 *) Timing vulnerability in ECDSA signature generation 61 62 The OpenSSL ECDSA signature algorithm has been shown to be vulnerable to a 63 timing side channel attack. An attacker could use variations in the signing 64 algorithm to recover the private key. 65 66 This issue was reported to OpenSSL on 25th October 2018 by Samuel Weiser. 67 (CVE-2018-0735) 68 [Paul Dale] 69 70 *) Added EVP_PKEY_ECDH_KDF_X9_63 and ecdh_KDF_X9_63() as replacements for 71 the EVP_PKEY_ECDH_KDF_X9_62 KDF type and ECDH_KDF_X9_62(). The old names 72 are retained for backwards compatibility. 73 [Antoine Salon] 74 75 *) Fixed the issue that RAND_add()/RAND_seed() silently discards random input 76 if its length exceeds 4096 bytes. The limit has been raised to a buffer size 77 of two gigabytes and the error handling improved. 78 79 This issue was reported to OpenSSL by Dr. Falko Strenzke. It has been 80 categorized as a normal bug, not a security issue, because the DRBG reseeds 81 automatically and is fully functional even without additional randomness 82 provided by the application. 83 84 Changes between 1.1.0i and 1.1.1 [11 Sep 2018] 85 86 *) Add a new ClientHello callback. Provides a callback interface that gives 87 the application the ability to adjust the nascent SSL object at the 88 earliest stage of ClientHello processing, immediately after extensions have 89 been collected but before they have been processed. In particular, this 90 callback can adjust the supported TLS versions in response to the contents 91 of the ClientHello 92 [Benjamin Kaduk] 93 94 *) Add SM2 base algorithm support. 95 [Jack Lloyd] 96 97 *) s390x assembly pack: add (improved) hardware-support for the following 98 cryptographic primitives: sha3, shake, aes-gcm, aes-ccm, aes-ctr, aes-ofb, 99 aes-cfb/cfb8, aes-ecb. 100 [Patrick Steuer] 101 102 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str 103 parameter is no longer accepted, as it leads to a corrupt table. NULL 104 pem_str is reserved for alias entries only. 105 [Richard Levitte] 106 107 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder 108 step for prime curves. The new implementation is based on formulae from 109 differential addition-and-doubling in homogeneous projective coordinates 110 from Izu-Takagi "A fast parallel elliptic curve multiplication resistant 111 against side channel attacks" and Brier-Joye "Weierstrass Elliptic Curves 112 and Side-Channel Attacks" Eq. (8) for y-coordinate recovery, modified 113 to work in projective coordinates. 114 [Billy Bob Brumley, Nicola Tuveri] 115 116 *) Change generating and checking of primes so that the error rate of not 117 being prime depends on the intended use based on the size of the input. 118 For larger primes this will result in more rounds of Miller-Rabin. 119 The maximal error rate for primes with more than 1080 bits is lowered 120 to 2^-128. 121 [Kurt Roeckx, Annie Yousar] 122 123 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. 124 [Kurt Roeckx] 125 126 *) The 'tsget' script is renamed to 'tsget.pl', to avoid confusion when 127 moving between systems, and to avoid confusion when a Windows build is 128 done with mingw vs with MSVC. For POSIX installs, there's still a 129 symlink or copy named 'tsget' to avoid that confusion as well. 130 [Richard Levitte] 131 132 *) Revert blinding in ECDSA sign and instead make problematic addition 133 length-invariant. Switch even to fixed-length Montgomery multiplication. 134 [Andy Polyakov] 135 136 *) Use the new ec_scalar_mul_ladder scaffold to implement a specialized ladder 137 step for binary curves. The new implementation is based on formulae from 138 differential addition-and-doubling in mixed Lopez-Dahab projective 139 coordinates, modified to independently blind the operands. 140 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri] 141 142 *) Add a scaffold to optionally enhance the Montgomery ladder implementation 143 for `ec_scalar_mul_ladder` (formerly `ec_mul_consttime`) allowing 144 EC_METHODs to implement their own specialized "ladder step", to take 145 advantage of more favorable coordinate systems or more efficient 146 differential addition-and-doubling algorithms. 147 [Billy Bob Brumley, Sohaib ul Hassan, Nicola Tuveri] 148 149 *) Modified the random device based seed sources to keep the relevant 150 file descriptors open rather than reopening them on each access. 151 This allows such sources to operate in a chroot() jail without 152 the associated device nodes being available. This behaviour can be 153 controlled using RAND_keep_random_devices_open(). 154 [Paul Dale] 155 156 *) Numerous side-channel attack mitigations have been applied. This may have 157 performance impacts for some algorithms for the benefit of improved 158 security. Specific changes are noted in this change log by their respective 159 authors. 160 [Matt Caswell] 161 162 *) AIX shared library support overhaul. Switch to AIX "natural" way of 163 handling shared libraries, which means collecting shared objects of 164 different versions and bitnesses in one common archive. This allows to 165 mitigate conflict between 1.0 and 1.1 side-by-side installations. It 166 doesn't affect the way 3rd party applications are linked, only how 167 multi-version installation is managed. 168 [Andy Polyakov] 169 170 *) Make ec_group_do_inverse_ord() more robust and available to other 171 EC cryptosystems, so that irrespective of BN_FLG_CONSTTIME, SCA 172 mitigations are applied to the fallback BN_mod_inverse(). 173 When using this function rather than BN_mod_inverse() directly, new 174 EC cryptosystem implementations are then safer-by-default. 175 [Billy Bob Brumley] 176 177 *) Add coordinate blinding for EC_POINT and implement projective 178 coordinate blinding for generic prime curves as a countermeasure to 179 chosen point SCA attacks. 180 [Sohaib ul Hassan, Nicola Tuveri, Billy Bob Brumley] 181 182 *) Add blinding to ECDSA and DSA signatures to protect against side channel 183 attacks discovered by Keegan Ryan (NCC Group). 184 [Matt Caswell] 185 186 *) Enforce checking in the pkeyutl command line app to ensure that the input 187 length does not exceed the maximum supported digest length when performing 188 a sign, verify or verifyrecover operation. 189 [Matt Caswell] 190 191 *) SSL_MODE_AUTO_RETRY is enabled by default. Applications that use blocking 192 I/O in combination with something like select() or poll() will hang. This 193 can be turned off again using SSL_CTX_clear_mode(). 194 Many applications do not properly handle non-application data records, and 195 TLS 1.3 sends more of such records. Setting SSL_MODE_AUTO_RETRY works 196 around the problems in those applications, but can also break some. 197 It's recommended to read the manpages about SSL_read(), SSL_write(), 198 SSL_get_error(), SSL_shutdown(), SSL_CTX_set_mode() and 199 SSL_CTX_set_read_ahead() again. 200 [Kurt Roeckx] 201 202 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we 203 now allow empty (zero character) pass phrases. 204 [Richard Levitte] 205 206 *) Apply blinding to binary field modular inversion and remove patent 207 pending (OPENSSL_SUN_GF2M_DIV) BN_GF2m_mod_div implementation. 208 [Billy Bob Brumley] 209 210 *) Deprecate ec2_mult.c and unify scalar multiplication code paths for 211 binary and prime elliptic curves. 212 [Billy Bob Brumley] 213 214 *) Remove ECDSA nonce padding: EC_POINT_mul is now responsible for 215 constant time fixed point multiplication. 216 [Billy Bob Brumley] 217 218 *) Revise elliptic curve scalar multiplication with timing attack 219 defenses: ec_wNAF_mul redirects to a constant time implementation 220 when computing fixed point and variable point multiplication (which 221 in OpenSSL are mostly used with secret scalars in keygen, sign, 222 ECDH derive operations). 223 [Billy Bob Brumley, Nicola Tuveri, Cesar Pereida García, 224 Sohaib ul Hassan] 225 226 *) Updated CONTRIBUTING 227 [Rich Salz] 228 229 *) Updated DRBG / RAND to request nonce and additional low entropy 230 randomness from the system. 231 [Matthias St. Pierre] 232 233 *) Updated 'openssl rehash' to use OpenSSL consistent default. 234 [Richard Levitte] 235 236 *) Moved the load of the ssl_conf module to libcrypto, which helps 237 loading engines that libssl uses before libssl is initialised. 238 [Matt Caswell] 239 240 *) Added EVP_PKEY_sign() and EVP_PKEY_verify() for EdDSA 241 [Matt Caswell] 242 243 *) Fixed X509_NAME_ENTRY_set to get multi-valued RDNs right in all cases. 244 [Ingo Schwarze, Rich Salz] 245 246 *) Added output of accepting IP address and port for 'openssl s_server' 247 [Richard Levitte] 248 249 *) Added a new API for TLSv1.3 ciphersuites: 250 SSL_CTX_set_ciphersuites() 251 SSL_set_ciphersuites() 252 [Matt Caswell] 253 254 *) Memory allocation failures consistenly add an error to the error 255 stack. 256 [Rich Salz] 257 258 *) Don't use OPENSSL_ENGINES and OPENSSL_CONF environment values 259 in libcrypto when run as setuid/setgid. 260 [Bernd Edlinger] 261 262 *) Load any config file by default when libssl is used. 263 [Matt Caswell] 264 265 *) Added new public header file <openssl/rand_drbg.h> and documentation 266 for the RAND_DRBG API. See manual page RAND_DRBG(7) for an overview. 267 [Matthias St. Pierre] 268 269 *) QNX support removed (cannot find contributors to get their approval 270 for the license change). 271 [Rich Salz] 272 273 *) TLSv1.3 replay protection for early data has been implemented. See the 274 SSL_read_early_data() man page for further details. 275 [Matt Caswell] 276 277 *) Separated TLSv1.3 ciphersuite configuration out from TLSv1.2 ciphersuite 278 configuration. TLSv1.3 ciphersuites are not compatible with TLSv1.2 and 279 below. Similarly TLSv1.2 ciphersuites are not compatible with TLSv1.3. 280 In order to avoid issues where legacy TLSv1.2 ciphersuite configuration 281 would otherwise inadvertently disable all TLSv1.3 ciphersuites the 282 configuration has been separated out. See the ciphers man page or the 283 SSL_CTX_set_ciphersuites() man page for more information. 284 [Matt Caswell] 285 286 *) On POSIX (BSD, Linux, ...) systems the ocsp(1) command running 287 in responder mode now supports the new "-multi" option, which 288 spawns the specified number of child processes to handle OCSP 289 requests. The "-timeout" option now also limits the OCSP 290 responder's patience to wait to receive the full client request 291 on a newly accepted connection. Child processes are respawned 292 as needed, and the CA index file is automatically reloaded 293 when changed. This makes it possible to run the "ocsp" responder 294 as a long-running service, making the OpenSSL CA somewhat more 295 feature-complete. In this mode, most diagnostic messages logged 296 after entering the event loop are logged via syslog(3) rather than 297 written to stderr. 298 [Viktor Dukhovni] 299 300 *) Added support for X448 and Ed448. Heavily based on original work by 301 Mike Hamburg. 302 [Matt Caswell] 303 304 *) Extend OSSL_STORE with capabilities to search and to narrow the set of 305 objects loaded. This adds the functions OSSL_STORE_expect() and 306 OSSL_STORE_find() as well as needed tools to construct searches and 307 get the search data out of them. 308 [Richard Levitte] 309 310 *) Support for TLSv1.3 added. Note that users upgrading from an earlier 311 version of OpenSSL should review their configuration settings to ensure 312 that they are still appropriate for TLSv1.3. For further information see: 313 https://wiki.openssl.org/index.php/TLS1.3 314 [Matt Caswell] 315 316 *) Grand redesign of the OpenSSL random generator 317 318 The default RAND method now utilizes an AES-CTR DRBG according to 319 NIST standard SP 800-90Ar1. The new random generator is essentially 320 a port of the default random generator from the OpenSSL FIPS 2.0 321 object module. It is a hybrid deterministic random bit generator 322 using an AES-CTR bit stream and which seeds and reseeds itself 323 automatically using trusted system entropy sources. 324 325 Some of its new features are: 326 o Support for multiple DRBG instances with seed chaining. 327 o The default RAND method makes use of a DRBG. 328 o There is a public and private DRBG instance. 329 o The DRBG instances are fork-safe. 330 o Keep all global DRBG instances on the secure heap if it is enabled. 331 o The public and private DRBG instance are per thread for lock free 332 operation 333 [Paul Dale, Benjamin Kaduk, Kurt Roeckx, Rich Salz, Matthias St. Pierre] 334 335 *) Changed Configure so it only says what it does and doesn't dump 336 so much data. Instead, ./configdata.pm should be used as a script 337 to display all sorts of configuration data. 338 [Richard Levitte] 339 340 *) Added processing of "make variables" to Configure. 341 [Richard Levitte] 342 343 *) Added SHA512/224 and SHA512/256 algorithm support. 344 [Paul Dale] 345 346 *) The last traces of Netware support, first removed in 1.1.0, have 347 now been removed. 348 [Rich Salz] 349 350 *) Get rid of Makefile.shared, and in the process, make the processing 351 of certain files (rc.obj, or the .def/.map/.opt files produced from 352 the ordinal files) more visible and hopefully easier to trace and 353 debug (or make silent). 354 [Richard Levitte] 355 356 *) Make it possible to have environment variable assignments as 357 arguments to config / Configure. 358 [Richard Levitte] 359 360 *) Add multi-prime RSA (RFC 8017) support. 361 [Paul Yang] 362 363 *) Add SM3 implemented according to GB/T 32905-2016 364 [ Jack Lloyd <jack.lloyd@ribose.com>, 365 Ronald Tse <ronald.tse@ribose.com>, 366 Erick Borsboom <erick.borsboom@ribose.com> ] 367 368 *) Add 'Maximum Fragment Length' TLS extension negotiation and support 369 as documented in RFC6066. 370 Based on a patch from Tomasz Moń 371 [Filipe Raimundo da Silva] 372 373 *) Add SM4 implemented according to GB/T 32907-2016. 374 [ Jack Lloyd <jack.lloyd@ribose.com>, 375 Ronald Tse <ronald.tse@ribose.com>, 376 Erick Borsboom <erick.borsboom@ribose.com> ] 377 378 *) Reimplement -newreq-nodes and ERR_error_string_n; the 379 original author does not agree with the license change. 380 [Rich Salz] 381 382 *) Add ARIA AEAD TLS support. 383 [Jon Spillett] 384 385 *) Some macro definitions to support VS6 have been removed. Visual 386 Studio 6 has not worked since 1.1.0 387 [Rich Salz] 388 389 *) Add ERR_clear_last_mark(), to allow callers to clear the last mark 390 without clearing the errors. 391 [Richard Levitte] 392 393 *) Add "atfork" functions. If building on a system that without 394 pthreads, see doc/man3/OPENSSL_fork_prepare.pod for application 395 requirements. The RAND facility now uses/requires this. 396 [Rich Salz] 397 398 *) Add SHA3. 399 [Andy Polyakov] 400 401 *) The UI API becomes a permanent and integral part of libcrypto, i.e. 402 not possible to disable entirely. However, it's still possible to 403 disable the console reading UI method, UI_OpenSSL() (use UI_null() 404 as a fallback). 405 406 To disable, configure with 'no-ui-console'. 'no-ui' is still 407 possible to use as an alias. Check at compile time with the 408 macro OPENSSL_NO_UI_CONSOLE. The macro OPENSSL_NO_UI is still 409 possible to check and is an alias for OPENSSL_NO_UI_CONSOLE. 410 [Richard Levitte] 411 412 *) Add a STORE module, which implements a uniform and URI based reader of 413 stores that can contain keys, certificates, CRLs and numerous other 414 objects. The main API is loosely based on a few stdio functions, 415 and includes OSSL_STORE_open, OSSL_STORE_load, OSSL_STORE_eof, 416 OSSL_STORE_error and OSSL_STORE_close. 417 The implementation uses backends called "loaders" to implement arbitrary 418 URI schemes. There is one built in "loader" for the 'file' scheme. 419 [Richard Levitte] 420 421 *) Add devcrypto engine. This has been implemented against cryptodev-linux, 422 then adjusted to work on FreeBSD 8.4 as well. 423 Enable by configuring with 'enable-devcryptoeng'. This is done by default 424 on BSD implementations, as cryptodev.h is assumed to exist on all of them. 425 [Richard Levitte] 426 427 *) Module names can prefixed with OSSL_ or OPENSSL_. This affects 428 util/mkerr.pl, which is adapted to allow those prefixes, leading to 429 error code calls like this: 430 431 OSSL_FOOerr(OSSL_FOO_F_SOMETHING, OSSL_FOO_R_WHATEVER); 432 433 With this change, we claim the namespaces OSSL and OPENSSL in a manner 434 that can be encoded in C. For the foreseeable future, this will only 435 affect new modules. 436 [Richard Levitte and Tim Hudson] 437 438 *) Removed BSD cryptodev engine. 439 [Rich Salz] 440 441 *) Add a build target 'build_all_generated', to build all generated files 442 and only that. This can be used to prepare everything that requires 443 things like perl for a system that lacks perl and then move everything 444 to that system and do the rest of the build there. 445 [Richard Levitte] 446 447 *) In the UI interface, make it possible to duplicate the user data. This 448 can be used by engines that need to retain the data for a longer time 449 than just the call where this user data is passed. 450 [Richard Levitte] 451 452 *) Ignore the '-named_curve auto' value for compatibility of applications 453 with OpenSSL 1.0.2. 454 [Tomas Mraz <tmraz@fedoraproject.org>] 455 456 *) Fragmented SSL/TLS alerts are no longer accepted. An alert message is 2 457 bytes long. In theory it is permissible in SSLv3 - TLSv1.2 to fragment such 458 alerts across multiple records (some of which could be empty). In practice 459 it make no sense to send an empty alert record, or to fragment one. TLSv1.3 460 prohibts this altogether and other libraries (BoringSSL, NSS) do not 461 support this at all. Supporting it adds significant complexity to the 462 record layer, and its removal is unlikely to cause inter-operability 463 issues. 464 [Matt Caswell] 465 466 *) Add the ASN.1 types INT32, UINT32, INT64, UINT64 and variants prefixed 467 with Z. These are meant to replace LONG and ZLONG and to be size safe. 468 The use of LONG and ZLONG is discouraged and scheduled for deprecation 469 in OpenSSL 1.2.0. 470 [Richard Levitte] 471 472 *) Add the 'z' and 'j' modifiers to BIO_printf() et al formatting string, 473 'z' is to be used for [s]size_t, and 'j' - with [u]int64_t. 474 [Richard Levitte, Andy Polyakov] 475 476 *) Add EC_KEY_get0_engine(), which does for EC_KEY what RSA_get0_engine() 477 does for RSA, etc. 478 [Richard Levitte] 479 480 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target 481 platform rather than 'mingw'. 482 [Richard Levitte] 483 484 *) The functions X509_STORE_add_cert and X509_STORE_add_crl return 485 success if they are asked to add an object which already exists 486 in the store. This change cascades to other functions which load 487 certificates and CRLs. 488 [Paul Dale] 489 490 *) x86_64 assembly pack: annotate code with DWARF CFI directives to 491 facilitate stack unwinding even from assembly subroutines. 492 [Andy Polyakov] 493 494 *) Remove VAX C specific definitions of OPENSSL_EXPORT, OPENSSL_EXTERN. 495 Also remove OPENSSL_GLOBAL entirely, as it became a no-op. 496 [Richard Levitte] 497 498 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c. 499 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1, 500 which is the minimum version we support. 501 [Richard Levitte] 502 503 *) Certificate time validation (X509_cmp_time) enforces stricter 504 compliance with RFC 5280. Fractional seconds and timezone offsets 505 are no longer allowed. 506 [Emilia Käsper] 507 508 *) Add support for ARIA 509 [Paul Dale] 510 511 *) s_client will now send the Server Name Indication (SNI) extension by 512 default unless the new "-noservername" option is used. The server name is 513 based on the host provided to the "-connect" option unless overridden by 514 using "-servername". 515 [Matt Caswell] 516 517 *) Add support for SipHash 518 [Todd Short] 519 520 *) OpenSSL now fails if it receives an unrecognised record type in TLS1.0 521 or TLS1.1. Previously this only happened in SSLv3 and TLS1.2. This is to 522 prevent issues where no progress is being made and the peer continually 523 sends unrecognised record types, using up resources processing them. 524 [Matt Caswell] 525 526 *) 'openssl passwd' can now produce SHA256 and SHA512 based output, 527 using the algorithm defined in 528 https://www.akkadia.org/drepper/SHA-crypt.txt 529 [Richard Levitte] 530 531 *) Heartbeat support has been removed; the ABI is changed for now. 532 [Richard Levitte, Rich Salz] 533 534 *) Support for SSL_OP_NO_ENCRYPT_THEN_MAC in SSL_CONF_cmd. 535 [Emilia Käsper] 536 537 *) The RSA "null" method, which was partially supported to avoid patent 538 issues, has been replaced to always returns NULL. 539 [Rich Salz] 540 541 542 Changes between 1.1.0h and 1.1.0i [xx XXX xxxx] 543 544 *) Client DoS due to large DH parameter 545 546 During key agreement in a TLS handshake using a DH(E) based ciphersuite a 547 malicious server can send a very large prime value to the client. This will 548 cause the client to spend an unreasonably long period of time generating a 549 key for this prime resulting in a hang until the client has finished. This 550 could be exploited in a Denial Of Service attack. 551 552 This issue was reported to OpenSSL on 5th June 2018 by Guido Vranken 553 (CVE-2018-0732) 554 [Guido Vranken] 555 556 *) Cache timing vulnerability in RSA Key Generation 557 558 The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to 559 a cache timing side channel attack. An attacker with sufficient access to 560 mount cache timing attacks during the RSA key generation process could 561 recover the private key. 562 563 This issue was reported to OpenSSL on 4th April 2018 by Alejandro Cabrera 564 Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia. 565 (CVE-2018-0737) 566 [Billy Brumley] 567 568 *) Make EVP_PKEY_asn1_new() a bit stricter about its input. A NULL pem_str 569 parameter is no longer accepted, as it leads to a corrupt table. NULL 570 pem_str is reserved for alias entries only. 571 [Richard Levitte] 572 573 *) Revert blinding in ECDSA sign and instead make problematic addition 574 length-invariant. Switch even to fixed-length Montgomery multiplication. 575 [Andy Polyakov] 576 577 *) Change generating and checking of primes so that the error rate of not 578 being prime depends on the intended use based on the size of the input. 579 For larger primes this will result in more rounds of Miller-Rabin. 580 The maximal error rate for primes with more than 1080 bits is lowered 581 to 2^-128. 582 [Kurt Roeckx, Annie Yousar] 583 584 *) Increase the number of Miller-Rabin rounds for DSA key generating to 64. 585 [Kurt Roeckx] 586 587 *) Add blinding to ECDSA and DSA signatures to protect against side channel 588 attacks discovered by Keegan Ryan (NCC Group). 589 [Matt Caswell] 590 591 *) When unlocking a pass phrase protected PEM file or PKCS#8 container, we 592 now allow empty (zero character) pass phrases. 593 [Richard Levitte] 594 595 *) Certificate time validation (X509_cmp_time) enforces stricter 596 compliance with RFC 5280. Fractional seconds and timezone offsets 597 are no longer allowed. 598 [Emilia Käsper] 599 600 *) Fixed a text canonicalisation bug in CMS 601 602 Where a CMS detached signature is used with text content the text goes 603 through a canonicalisation process first prior to signing or verifying a 604 signature. This process strips trailing space at the end of lines, converts 605 line terminators to CRLF and removes additional trailing line terminators 606 at the end of a file. A bug in the canonicalisation process meant that 607 some characters, such as form-feed, were incorrectly treated as whitespace 608 and removed. This is contrary to the specification (RFC5485). This fix 609 could mean that detached text data signed with an earlier version of 610 OpenSSL 1.1.0 may fail to verify using the fixed version, or text data 611 signed with a fixed OpenSSL may fail to verify with an earlier version of 612 OpenSSL 1.1.0. A workaround is to only verify the canonicalised text data 613 and use the "-binary" flag (for the "cms" command line application) or set 614 the SMIME_BINARY/PKCS7_BINARY/CMS_BINARY flags (if using CMS_verify()). 615 [Matt Caswell] 616 617 Changes between 1.1.0g and 1.1.0h [27 Mar 2018] 618 619 *) Constructed ASN.1 types with a recursive definition could exceed the stack 620 621 Constructed ASN.1 types with a recursive definition (such as can be found 622 in PKCS7) could eventually exceed the stack given malicious input with 623 excessive recursion. This could result in a Denial Of Service attack. There 624 are no such structures used within SSL/TLS that come from untrusted sources 625 so this is considered safe. 626 627 This issue was reported to OpenSSL on 4th January 2018 by the OSS-fuzz 628 project. 629 (CVE-2018-0739) 630 [Matt Caswell] 631 632 *) Incorrect CRYPTO_memcmp on HP-UX PA-RISC 633 634 Because of an implementation bug the PA-RISC CRYPTO_memcmp function is 635 effectively reduced to only comparing the least significant bit of each 636 byte. This allows an attacker to forge messages that would be considered as 637 authenticated in an amount of tries lower than that guaranteed by the 638 security claims of the scheme. The module can only be compiled by the 639 HP-UX assembler, so that only HP-UX PA-RISC targets are affected. 640 641 This issue was reported to OpenSSL on 2nd March 2018 by Peter Waltenberg 642 (IBM). 643 (CVE-2018-0733) 644 [Andy Polyakov] 645 646 *) Add a build target 'build_all_generated', to build all generated files 647 and only that. This can be used to prepare everything that requires 648 things like perl for a system that lacks perl and then move everything 649 to that system and do the rest of the build there. 650 [Richard Levitte] 651 652 *) Backport SSL_OP_NO_RENGOTIATION 653 654 OpenSSL 1.0.2 and below had the ability to disable renegotiation using the 655 (undocumented) SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS flag. Due to the opacity 656 changes this is no longer possible in 1.1.0. Therefore the new 657 SSL_OP_NO_RENEGOTIATION option from 1.1.1-dev has been backported to 658 1.1.0 to provide equivalent functionality. 659 660 Note that if an application built against 1.1.0h headers (or above) is run 661 using an older version of 1.1.0 (prior to 1.1.0h) then the option will be 662 accepted but nothing will happen, i.e. renegotiation will not be prevented. 663 [Matt Caswell] 664 665 *) Removed the OS390-Unix config target. It relied on a script that doesn't 666 exist. 667 [Rich Salz] 668 669 *) rsaz_1024_mul_avx2 overflow bug on x86_64 670 671 There is an overflow bug in the AVX2 Montgomery multiplication procedure 672 used in exponentiation with 1024-bit moduli. No EC algorithms are affected. 673 Analysis suggests that attacks against RSA and DSA as a result of this 674 defect would be very difficult to perform and are not believed likely. 675 Attacks against DH1024 are considered just feasible, because most of the 676 work necessary to deduce information about a private key may be performed 677 offline. The amount of resources required for such an attack would be 678 significant. However, for an attack on TLS to be meaningful, the server 679 would have to share the DH1024 private key among multiple clients, which is 680 no longer an option since CVE-2016-0701. 681 682 This only affects processors that support the AVX2 but not ADX extensions 683 like Intel Haswell (4th generation). 684 685 This issue was reported to OpenSSL by David Benjamin (Google). The issue 686 was originally found via the OSS-Fuzz project. 687 (CVE-2017-3738) 688 [Andy Polyakov] 689 690 Changes between 1.1.0f and 1.1.0g [2 Nov 2017] 691 692 *) bn_sqrx8x_internal carry bug on x86_64 693 694 There is a carry propagating bug in the x86_64 Montgomery squaring 695 procedure. No EC algorithms are affected. Analysis suggests that attacks 696 against RSA and DSA as a result of this defect would be very difficult to 697 perform and are not believed likely. Attacks against DH are considered just 698 feasible (although very difficult) because most of the work necessary to 699 deduce information about a private key may be performed offline. The amount 700 of resources required for such an attack would be very significant and 701 likely only accessible to a limited number of attackers. An attacker would 702 additionally need online access to an unpatched system using the target 703 private key in a scenario with persistent DH parameters and a private 704 key that is shared between multiple clients. 705 706 This only affects processors that support the BMI1, BMI2 and ADX extensions 707 like Intel Broadwell (5th generation) and later or AMD Ryzen. 708 709 This issue was reported to OpenSSL by the OSS-Fuzz project. 710 (CVE-2017-3736) 711 [Andy Polyakov] 712 713 *) Malformed X.509 IPAddressFamily could cause OOB read 714 715 If an X.509 certificate has a malformed IPAddressFamily extension, 716 OpenSSL could do a one-byte buffer overread. The most likely result 717 would be an erroneous display of the certificate in text format. 718 719 This issue was reported to OpenSSL by the OSS-Fuzz project. 720 (CVE-2017-3735) 721 [Rich Salz] 722 723 Changes between 1.1.0e and 1.1.0f [25 May 2017] 724 725 *) Have 'config' recognise 64-bit mingw and choose 'mingw64' as the target 726 platform rather than 'mingw'. 727 [Richard Levitte] 728 729 *) Remove the VMS-specific reimplementation of gmtime from crypto/o_times.c. 730 VMS C's RTL has a fully up to date gmtime() and gmtime_r() since V7.1, 731 which is the minimum version we support. 732 [Richard Levitte] 733 734 Changes between 1.1.0d and 1.1.0e [16 Feb 2017] 735 736 *) Encrypt-Then-Mac renegotiation crash 737 738 During a renegotiation handshake if the Encrypt-Then-Mac extension is 739 negotiated where it was not in the original handshake (or vice-versa) then 740 this can cause OpenSSL to crash (dependant on ciphersuite). Both clients 741 and servers are affected. 742 743 This issue was reported to OpenSSL by Joe Orton (Red Hat). 744 (CVE-2017-3733) 745 [Matt Caswell] 746 747 Changes between 1.1.0c and 1.1.0d [26 Jan 2017] 748 749 *) Truncated packet could crash via OOB read 750 751 If one side of an SSL/TLS path is running on a 32-bit host and a specific 752 cipher is being used, then a truncated packet can cause that host to 753 perform an out-of-bounds read, usually resulting in a crash. 754 755 This issue was reported to OpenSSL by Robert Święcki of Google. 756 (CVE-2017-3731) 757 [Andy Polyakov] 758 759 *) Bad (EC)DHE parameters cause a client crash 760 761 If a malicious server supplies bad parameters for a DHE or ECDHE key 762 exchange then this can result in the client attempting to dereference a 763 NULL pointer leading to a client crash. This could be exploited in a Denial 764 of Service attack. 765 766 This issue was reported to OpenSSL by Guido Vranken. 767 (CVE-2017-3730) 768 [Matt Caswell] 769 770 *) BN_mod_exp may produce incorrect results on x86_64 771 772 There is a carry propagating bug in the x86_64 Montgomery squaring 773 procedure. No EC algorithms are affected. Analysis suggests that attacks 774 against RSA and DSA as a result of this defect would be very difficult to 775 perform and are not believed likely. Attacks against DH are considered just 776 feasible (although very difficult) because most of the work necessary to 777 deduce information about a private key may be performed offline. The amount 778 of resources required for such an attack would be very significant and 779 likely only accessible to a limited number of attackers. An attacker would 780 additionally need online access to an unpatched system using the target 781 private key in a scenario with persistent DH parameters and a private 782 key that is shared between multiple clients. For example this can occur by 783 default in OpenSSL DHE based SSL/TLS ciphersuites. Note: This issue is very 784 similar to CVE-2015-3193 but must be treated as a separate problem. 785 786 This issue was reported to OpenSSL by the OSS-Fuzz project. 787 (CVE-2017-3732) 788 [Andy Polyakov] 789 790 Changes between 1.1.0b and 1.1.0c [10 Nov 2016] 791 792 *) ChaCha20/Poly1305 heap-buffer-overflow 793 794 TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to 795 a DoS attack by corrupting larger payloads. This can result in an OpenSSL 796 crash. This issue is not considered to be exploitable beyond a DoS. 797 798 This issue was reported to OpenSSL by Robert Święcki (Google Security Team) 799 (CVE-2016-7054) 800 [Richard Levitte] 801 802 *) CMS Null dereference 803 804 Applications parsing invalid CMS structures can crash with a NULL pointer 805 dereference. This is caused by a bug in the handling of the ASN.1 CHOICE 806 type in OpenSSL 1.1.0 which can result in a NULL value being passed to the 807 structure callback if an attempt is made to free certain invalid encodings. 808 Only CHOICE structures using a callback which do not handle NULL value are 809 affected. 810 811 This issue was reported to OpenSSL by Tyler Nighswander of ForAllSecure. 812 (CVE-2016-7053) 813 [Stephen Henson] 814 815 *) Montgomery multiplication may produce incorrect results 816 817 There is a carry propagating bug in the Broadwell-specific Montgomery 818 multiplication procedure that handles input lengths divisible by, but 819 longer than 256 bits. Analysis suggests that attacks against RSA, DSA 820 and DH private keys are impossible. This is because the subroutine in 821 question is not used in operations with the private key itself and an input 822 of the attacker's direct choice. Otherwise the bug can manifest itself as 823 transient authentication and key negotiation failures or reproducible 824 erroneous outcome of public-key operations with specially crafted input. 825 Among EC algorithms only Brainpool P-512 curves are affected and one 826 presumably can attack ECDH key negotiation. Impact was not analyzed in 827 detail, because pre-requisites for attack are considered unlikely. Namely 828 multiple clients have to choose the curve in question and the server has to 829 share the private key among them, neither of which is default behaviour. 830 Even then only clients that chose the curve will be affected. 831 832 This issue was publicly reported as transient failures and was not 833 initially recognized as a security issue. Thanks to Richard Morgan for 834 providing reproducible case. 835 (CVE-2016-7055) 836 [Andy Polyakov] 837 838 *) Removed automatic addition of RPATH in shared libraries and executables, 839 as this was a remainder from OpenSSL 1.0.x and isn't needed any more. 840 [Richard Levitte] 841 842 Changes between 1.1.0a and 1.1.0b [26 Sep 2016] 843 844 *) Fix Use After Free for large message sizes 845 846 The patch applied to address CVE-2016-6307 resulted in an issue where if a 847 message larger than approx 16k is received then the underlying buffer to 848 store the incoming message is reallocated and moved. Unfortunately a 849 dangling pointer to the old location is left which results in an attempt to 850 write to the previously freed location. This is likely to result in a 851 crash, however it could potentially lead to execution of arbitrary code. 852 853 This issue only affects OpenSSL 1.1.0a. 854 855 This issue was reported to OpenSSL by Robert Święcki. 856 (CVE-2016-6309) 857 [Matt Caswell] 858 859 Changes between 1.1.0 and 1.1.0a [22 Sep 2016] 860 861 *) OCSP Status Request extension unbounded memory growth 862 863 A malicious client can send an excessively large OCSP Status Request 864 extension. If that client continually requests renegotiation, sending a 865 large OCSP Status Request extension each time, then there will be unbounded 866 memory growth on the server. This will eventually lead to a Denial Of 867 Service attack through memory exhaustion. Servers with a default 868 configuration are vulnerable even if they do not support OCSP. Builds using 869 the "no-ocsp" build time option are not affected. 870 871 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 872 (CVE-2016-6304) 873 [Matt Caswell] 874 875 *) SSL_peek() hang on empty record 876 877 OpenSSL 1.1.0 SSL/TLS will hang during a call to SSL_peek() if the peer 878 sends an empty record. This could be exploited by a malicious peer in a 879 Denial Of Service attack. 880 881 This issue was reported to OpenSSL by Alex Gaynor. 882 (CVE-2016-6305) 883 [Matt Caswell] 884 885 *) Excessive allocation of memory in tls_get_message_header() and 886 dtls1_preprocess_fragment() 887 888 A (D)TLS message includes 3 bytes for its length in the header for the 889 message. This would allow for messages up to 16Mb in length. Messages of 890 this length are excessive and OpenSSL includes a check to ensure that a 891 peer is sending reasonably sized messages in order to avoid too much memory 892 being consumed to service a connection. A flaw in the logic of version 893 1.1.0 means that memory for the message is allocated too early, prior to 894 the excessive message length check. Due to way memory is allocated in 895 OpenSSL this could mean an attacker could force up to 21Mb to be allocated 896 to service a connection. This could lead to a Denial of Service through 897 memory exhaustion. However, the excessive message length check still takes 898 place, and this would cause the connection to immediately fail. Assuming 899 that the application calls SSL_free() on the failed connection in a timely 900 manner then the 21Mb of allocated memory will then be immediately freed 901 again. Therefore the excessive memory allocation will be transitory in 902 nature. This then means that there is only a security impact if: 903 904 1) The application does not call SSL_free() in a timely manner in the event 905 that the connection fails 906 or 907 2) The application is working in a constrained environment where there is 908 very little free memory 909 or 910 3) The attacker initiates multiple connection attempts such that there are 911 multiple connections in a state where memory has been allocated for the 912 connection; SSL_free() has not yet been called; and there is insufficient 913 memory to service the multiple requests. 914 915 Except in the instance of (1) above any Denial Of Service is likely to be 916 transitory because as soon as the connection fails the memory is 917 subsequently freed again in the SSL_free() call. However there is an 918 increased risk during this period of application crashes due to the lack of 919 memory - which would then mean a more serious Denial of Service. 920 921 This issue was reported to OpenSSL by Shi Lei (Gear Team, Qihoo 360 Inc.) 922 (CVE-2016-6307 and CVE-2016-6308) 923 [Matt Caswell] 924 925 *) solaris-x86-cc, i.e. 32-bit configuration with vendor compiler, 926 had to be removed. Primary reason is that vendor assembler can't 927 assemble our modules with -KPIC flag. As result it, assembly 928 support, was not even available as option. But its lack means 929 lack of side-channel resistant code, which is incompatible with 930 security by todays standards. Fortunately gcc is readily available 931 prepackaged option, which we firmly point at... 932 [Andy Polyakov] 933 934 Changes between 1.0.2h and 1.1.0 [25 Aug 2016] 935 936 *) Windows command-line tool supports UTF-8 opt-in option for arguments 937 and console input. Setting OPENSSL_WIN32_UTF8 environment variable 938 (to any value) allows Windows user to access PKCS#12 file generated 939 with Windows CryptoAPI and protected with non-ASCII password, as well 940 as files generated under UTF-8 locale on Linux also protected with 941 non-ASCII password. 942 [Andy Polyakov] 943 944 *) To mitigate the SWEET32 attack (CVE-2016-2183), 3DES cipher suites 945 have been disabled by default and removed from DEFAULT, just like RC4. 946 See the RC4 item below to re-enable both. 947 [Rich Salz] 948 949 *) The method for finding the storage location for the Windows RAND seed file 950 has changed. First we check %RANDFILE%. If that is not set then we check 951 the directories %HOME%, %USERPROFILE% and %SYSTEMROOT% in that order. If 952 all else fails we fall back to C:\. 953 [Matt Caswell] 954 955 *) The EVP_EncryptUpdate() function has had its return type changed from void 956 to int. A return of 0 indicates and error while a return of 1 indicates 957 success. 958 [Matt Caswell] 959 960 *) The flags RSA_FLAG_NO_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME and 961 DH_FLAG_NO_EXP_CONSTTIME which previously provided the ability to switch 962 off the constant time implementation for RSA, DSA and DH have been made 963 no-ops and deprecated. 964 [Matt Caswell] 965 966 *) Windows RAND implementation was simplified to only get entropy by 967 calling CryptGenRandom(). Various other RAND-related tickets 968 were also closed. 969 [Joseph Wylie Yandle, Rich Salz] 970 971 *) The stack and lhash API's were renamed to start with OPENSSL_SK_ 972 and OPENSSL_LH_, respectively. The old names are available 973 with API compatibility. They new names are now completely documented. 974 [Rich Salz] 975 976 *) Unify TYPE_up_ref(obj) methods signature. 977 SSL_CTX_up_ref(), SSL_up_ref(), X509_up_ref(), EVP_PKEY_up_ref(), 978 X509_CRL_up_ref(), X509_OBJECT_up_ref_count() methods are now returning an 979 int (instead of void) like all others TYPE_up_ref() methods. 980 So now these methods also check the return value of CRYPTO_atomic_add(), 981 and the validity of object reference counter. 982 [fdasilvayy@gmail.com] 983 984 *) With Windows Visual Studio builds, the .pdb files are installed 985 alongside the installed libraries and executables. For a static 986 library installation, ossl_static.pdb is the associate compiler 987 generated .pdb file to be used when linking programs. 988 [Richard Levitte] 989 990 *) Remove openssl.spec. Packaging files belong with the packagers. 991 [Richard Levitte] 992 993 *) Automatic Darwin/OSX configuration has had a refresh, it will now 994 recognise x86_64 architectures automatically. You can still decide 995 to build for a different bitness with the environment variable 996 KERNEL_BITS (can be 32 or 64), for example: 997 998 KERNEL_BITS=32 ./config 999 1000 [Richard Levitte] 1001 1002 *) Change default algorithms in pkcs8 utility to use PKCS#5 v2.0, 1003 256 bit AES and HMAC with SHA256. 1004 [Steve Henson] 1005 1006 *) Remove support for MIPS o32 ABI on IRIX (and IRIX only). 1007 [Andy Polyakov] 1008 1009 *) Triple-DES ciphers have been moved from HIGH to MEDIUM. 1010 [Rich Salz] 1011 1012 *) To enable users to have their own config files and build file templates, 1013 Configure looks in the directory indicated by the environment variable 1014 OPENSSL_LOCAL_CONFIG_DIR as well as the in-source Configurations/ 1015 directory. On VMS, OPENSSL_LOCAL_CONFIG_DIR is expected to be a logical 1016 name and is used as is. 1017 [Richard Levitte] 1018 1019 *) The following datatypes were made opaque: X509_OBJECT, X509_STORE_CTX, 1020 X509_STORE, X509_LOOKUP, and X509_LOOKUP_METHOD. The unused type 1021 X509_CERT_FILE_CTX was removed. 1022 [Rich Salz] 1023 1024 *) "shared" builds are now the default. To create only static libraries use 1025 the "no-shared" Configure option. 1026 [Matt Caswell] 1027 1028 *) Remove the no-aes, no-hmac, no-rsa, no-sha and no-md5 Configure options. 1029 All of these option have not worked for some while and are fundamental 1030 algorithms. 1031 [Matt Caswell] 1032 1033 *) Make various cleanup routines no-ops and mark them as deprecated. Most 1034 global cleanup functions are no longer required because they are handled 1035 via auto-deinit (see OPENSSL_init_crypto and OPENSSL_init_ssl man pages). 1036 Explicitly de-initing can cause problems (e.g. where a library that uses 1037 OpenSSL de-inits, but an application is still using it). The affected 1038 functions are CONF_modules_free(), ENGINE_cleanup(), OBJ_cleanup(), 1039 EVP_cleanup(), BIO_sock_cleanup(), CRYPTO_cleanup_all_ex_data(), 1040 RAND_cleanup(), SSL_COMP_free_compression_methods(), ERR_free_strings() and 1041 COMP_zlib_cleanup(). 1042 [Matt Caswell] 1043 1044 *) --strict-warnings no longer enables runtime debugging options 1045 such as REF_DEBUG. Instead, debug options are automatically 1046 enabled with '--debug' builds. 1047 [Andy Polyakov, Emilia Käsper] 1048 1049 *) Made DH and DH_METHOD opaque. The structures for managing DH objects 1050 have been moved out of the public header files. New functions for managing 1051 these have been added. 1052 [Matt Caswell] 1053 1054 *) Made RSA and RSA_METHOD opaque. The structures for managing RSA 1055 objects have been moved out of the public header files. New 1056 functions for managing these have been added. 1057 [Richard Levitte] 1058 1059 *) Made DSA and DSA_METHOD opaque. The structures for managing DSA objects 1060 have been moved out of the public header files. New functions for managing 1061 these have been added. 1062 [Matt Caswell] 1063 1064 *) Made BIO and BIO_METHOD opaque. The structures for managing BIOs have been 1065 moved out of the public header files. New functions for managing these 1066 have been added. 1067 [Matt Caswell] 1068 1069 *) Removed no-rijndael as a config option. Rijndael is an old name for AES. 1070 [Matt Caswell] 1071 1072 *) Removed the mk1mf build scripts. 1073 [Richard Levitte] 1074 1075 *) Headers are now wrapped, if necessary, with OPENSSL_NO_xxx, so 1076 it is always safe to #include a header now. 1077 [Rich Salz] 1078 1079 *) Removed the aged BC-32 config and all its supporting scripts 1080 [Richard Levitte] 1081 1082 *) Removed support for Ultrix, Netware, and OS/2. 1083 [Rich Salz] 1084 1085 *) Add support for HKDF. 1086 [Alessandro Ghedini] 1087 1088 *) Add support for blake2b and blake2s 1089 [Bill Cox] 1090 1091 *) Added support for "pipelining". Ciphers that have the 1092 EVP_CIPH_FLAG_PIPELINE flag set have a capability to process multiple 1093 encryptions/decryptions simultaneously. There are currently no built-in 1094 ciphers with this property but the expectation is that engines will be able 1095 to offer it to significantly improve throughput. Support has been extended 1096 into libssl so that multiple records for a single connection can be 1097 processed in one go (for >=TLS 1.1). 1098 [Matt Caswell] 1099 1100 *) Added the AFALG engine. This is an async capable engine which is able to 1101 offload work to the Linux kernel. In this initial version it only supports 1102 AES128-CBC. The kernel must be version 4.1.0 or greater. 1103 [Catriona Lucey] 1104 1105 *) OpenSSL now uses a new threading API. It is no longer necessary to 1106 set locking callbacks to use OpenSSL in a multi-threaded environment. There 1107 are two supported threading models: pthreads and windows threads. It is 1108 also possible to configure OpenSSL at compile time for "no-threads". The 1109 old threading API should no longer be used. The functions have been 1110 replaced with "no-op" compatibility macros. 1111 [Alessandro Ghedini, Matt Caswell] 1112 1113 *) Modify behavior of ALPN to invoke callback after SNI/servername 1114 callback, such that updates to the SSL_CTX affect ALPN. 1115 [Todd Short] 1116 1117 *) Add SSL_CIPHER queries for authentication and key-exchange. 1118 [Todd Short] 1119 1120 *) Changes to the DEFAULT cipherlist: 1121 - Prefer (EC)DHE handshakes over plain RSA. 1122 - Prefer AEAD ciphers over legacy ciphers. 1123 - Prefer ECDSA over RSA when both certificates are available. 1124 - Prefer TLSv1.2 ciphers/PRF. 1125 - Remove DSS, SEED, IDEA, CAMELLIA, and AES-CCM from the 1126 default cipherlist. 1127 [Emilia Käsper] 1128 1129 *) Change the ECC default curve list to be this, in order: x25519, 1130 secp256r1, secp521r1, secp384r1. 1131 [Rich Salz] 1132 1133 *) RC4 based libssl ciphersuites are now classed as "weak" ciphers and are 1134 disabled by default. They can be re-enabled using the 1135 enable-weak-ssl-ciphers option to Configure. 1136 [Matt Caswell] 1137 1138 *) If the server has ALPN configured, but supports no protocols that the 1139 client advertises, send a fatal "no_application_protocol" alert. 1140 This behaviour is SHALL in RFC 7301, though it isn't universally 1141 implemented by other servers. 1142 [Emilia Käsper] 1143 1144 *) Add X25519 support. 1145 Add ASN.1 and EVP_PKEY methods for X25519. This includes support 1146 for public and private key encoding using the format documented in 1147 draft-ietf-curdle-pkix-02. The corresponding EVP_PKEY method supports 1148 key generation and key derivation. 1149 1150 TLS support complies with draft-ietf-tls-rfc4492bis-08 and uses 1151 X25519(29). 1152 [Steve Henson] 1153 1154 *) Deprecate SRP_VBASE_get_by_user. 1155 SRP_VBASE_get_by_user had inconsistent memory management behaviour. 1156 In order to fix an unavoidable memory leak (CVE-2016-0798), 1157 SRP_VBASE_get_by_user was changed to ignore the "fake user" SRP 1158 seed, even if the seed is configured. 1159 1160 Users should use SRP_VBASE_get1_by_user instead. Note that in 1161 SRP_VBASE_get1_by_user, caller must free the returned value. Note 1162 also that even though configuring the SRP seed attempts to hide 1163 invalid usernames by continuing the handshake with fake 1164 credentials, this behaviour is not constant time and no strong 1165 guarantees are made that the handshake is indistinguishable from 1166 that of a valid user. 1167 [Emilia Käsper] 1168 1169 *) Configuration change; it's now possible to build dynamic engines 1170 without having to build shared libraries and vice versa. This 1171 only applies to the engines in engines/, those in crypto/engine/ 1172 will always be built into libcrypto (i.e. "static"). 1173 1174 Building dynamic engines is enabled by default; to disable, use 1175 the configuration option "disable-dynamic-engine". 1176 1177 The only requirements for building dynamic engines are the 1178 presence of the DSO module and building with position independent 1179 code, so they will also automatically be disabled if configuring 1180 with "disable-dso" or "disable-pic". 1181 1182 The macros OPENSSL_NO_STATIC_ENGINE and OPENSSL_NO_DYNAMIC_ENGINE 1183 are also taken away from openssl/opensslconf.h, as they are 1184 irrelevant. 1185 [Richard Levitte] 1186 1187 *) Configuration change; if there is a known flag to compile 1188 position independent code, it will always be applied on the 1189 libcrypto and libssl object files, and never on the application 1190 object files. This means other libraries that use routines from 1191 libcrypto / libssl can be made into shared libraries regardless 1192 of how OpenSSL was configured. 1193 1194 If this isn't desirable, the configuration options "disable-pic" 1195 or "no-pic" can be used to disable the use of PIC. This will 1196 also disable building shared libraries and dynamic engines. 1197 [Richard Levitte] 1198 1199 *) Removed JPAKE code. It was experimental and has no wide use. 1200 [Rich Salz] 1201 1202 *) The INSTALL_PREFIX Makefile variable has been renamed to 1203 DESTDIR. That makes for less confusion on what this variable 1204 is for. Also, the configuration option --install_prefix is 1205 removed. 1206 [Richard Levitte] 1207 1208 *) Heartbeat for TLS has been removed and is disabled by default 1209 for DTLS; configure with enable-heartbeats. Code that uses the 1210 old #define's might need to be updated. 1211 [Emilia Käsper, Rich Salz] 1212 1213 *) Rename REF_CHECK to REF_DEBUG. 1214 [Rich Salz] 1215 1216 *) New "unified" build system 1217 1218 The "unified" build system is aimed to be a common system for all 1219 platforms we support. With it comes new support for VMS. 1220 1221 This system builds supports building in a different directory tree 1222 than the source tree. It produces one Makefile (for unix family 1223 or lookalikes), or one descrip.mms (for VMS). 1224 1225 The source of information to make the Makefile / descrip.mms is 1226 small files called 'build.info', holding the necessary 1227 information for each directory with source to compile, and a 1228 template in Configurations, like unix-Makefile.tmpl or 1229 descrip.mms.tmpl. 1230 1231 With this change, the library names were also renamed on Windows 1232 and on VMS. They now have names that are closer to the standard 1233 on Unix, and include the major version number, and in certain 1234 cases, the architecture they are built for. See "Notes on shared 1235 libraries" in INSTALL. 1236 1237 We rely heavily on the perl module Text::Template. 1238 [Richard Levitte] 1239 1240 *) Added support for auto-initialisation and de-initialisation of the library. 1241 OpenSSL no longer requires explicit init or deinit routines to be called, 1242 except in certain circumstances. See the OPENSSL_init_crypto() and 1243 OPENSSL_init_ssl() man pages for further information. 1244 [Matt Caswell] 1245 1246 *) The arguments to the DTLSv1_listen function have changed. Specifically the 1247 "peer" argument is now expected to be a BIO_ADDR object. 1248 1249 *) Rewrite of BIO networking library. The BIO library lacked consistent 1250 support of IPv6, and adding it required some more extensive 1251 modifications. This introduces the BIO_ADDR and BIO_ADDRINFO types, 1252 which hold all types of addresses and chains of address information. 1253 It also introduces a new API, with functions like BIO_socket, 1254 BIO_connect, BIO_listen, BIO_lookup and a rewrite of BIO_accept. 1255 The source/sink BIOs BIO_s_connect, BIO_s_accept and BIO_s_datagram 1256 have been adapted accordingly. 1257 [Richard Levitte] 1258 1259 *) RSA_padding_check_PKCS1_type_1 now accepts inputs with and without 1260 the leading 0-byte. 1261 [Emilia Käsper] 1262 1263 *) CRIME protection: disable compression by default, even if OpenSSL is 1264 compiled with zlib enabled. Applications can still enable compression 1265 by calling SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION), or by 1266 using the SSL_CONF library to configure compression. 1267 [Emilia Käsper] 1268 1269 *) The signature of the session callback configured with 1270 SSL_CTX_sess_set_get_cb was changed. The read-only input buffer 1271 was explicitly marked as 'const unsigned char*' instead of 1272 'unsigned char*'. 1273 [Emilia Käsper] 1274 1275 *) Always DPURIFY. Remove the use of uninitialized memory in the 1276 RNG, and other conditional uses of DPURIFY. This makes -DPURIFY a no-op. 1277 [Emilia Käsper] 1278 1279 *) Removed many obsolete configuration items, including 1280 DES_PTR, DES_RISC1, DES_RISC2, DES_INT 1281 MD2_CHAR, MD2_INT, MD2_LONG 1282 BF_PTR, BF_PTR2 1283 IDEA_SHORT, IDEA_LONG 1284 RC2_SHORT, RC2_LONG, RC4_LONG, RC4_CHUNK, RC4_INDEX 1285 [Rich Salz, with advice from Andy Polyakov] 1286 1287 *) Many BN internals have been moved to an internal header file. 1288 [Rich Salz with help from Andy Polyakov] 1289 1290 *) Configuration and writing out the results from it has changed. 1291 Files such as Makefile include/openssl/opensslconf.h and are now 1292 produced through general templates, such as Makefile.in and 1293 crypto/opensslconf.h.in and some help from the perl module 1294 Text::Template. 1295 1296 Also, the center of configuration information is no longer 1297 Makefile. Instead, Configure produces a perl module in 1298 configdata.pm which holds most of the config data (in the hash 1299 table %config), the target data that comes from the target 1300 configuration in one of the Configurations/*.conf files (in 1301 %target). 1302 [Richard Levitte] 1303 1304 *) To clarify their intended purposes, the Configure options 1305 --prefix and --openssldir change their semantics, and become more 1306 straightforward and less interdependent. 1307 1308 --prefix shall be used exclusively to give the location INSTALLTOP 1309 where programs, scripts, libraries, include files and manuals are 1310 going to be installed. The default is now /usr/local. 1311 1312 --openssldir shall be used exclusively to give the default 1313 location OPENSSLDIR where certificates, private keys, CRLs are 1314 managed. This is also where the default openssl.cnf gets 1315 installed. 1316 If the directory given with this option is a relative path, the 1317 values of both the --prefix value and the --openssldir value will 1318 be combined to become OPENSSLDIR. 1319 The default for --openssldir is INSTALLTOP/ssl. 1320 1321 Anyone who uses --openssldir to specify where OpenSSL is to be 1322 installed MUST change to use --prefix instead. 1323 [Richard Levitte] 1324 1325 *) The GOST engine was out of date and therefore it has been removed. An up 1326 to date GOST engine is now being maintained in an external repository. 1327 See: https://wiki.openssl.org/index.php/Binaries. Libssl still retains 1328 support for GOST ciphersuites (these are only activated if a GOST engine 1329 is present). 1330 [Matt Caswell] 1331 1332 *) EGD is no longer supported by default; use enable-egd when 1333 configuring. 1334 [Ben Kaduk and Rich Salz] 1335 1336 *) The distribution now has Makefile.in files, which are used to 1337 create Makefile's when Configure is run. *Configure must be run 1338 before trying to build now.* 1339 [Rich Salz] 1340 1341 *) The return value for SSL_CIPHER_description() for error conditions 1342 has changed. 1343 [Rich Salz] 1344 1345 *) Support for RFC6698/RFC7671 DANE TLSA peer authentication. 1346 1347 Obtaining and performing DNSSEC validation of TLSA records is 1348 the application's responsibility. The application provides 1349 the TLSA records of its choice to OpenSSL, and these are then 1350 used to authenticate the peer. 1351 1352 The TLSA records need not even come from DNS. They can, for 1353 example, be used to implement local end-entity certificate or 1354 trust-anchor "pinning", where the "pin" data takes the form 1355 of TLSA records, which can augment or replace verification 1356 based on the usual WebPKI public certification authorities. 1357 [Viktor Dukhovni] 1358 1359 *) Revert default OPENSSL_NO_DEPRECATED setting. Instead OpenSSL 1360 continues to support deprecated interfaces in default builds. 1361 However, applications are strongly advised to compile their 1362 source files with -DOPENSSL_API_COMPAT=0x10100000L, which hides 1363 the declarations of all interfaces deprecated in 0.9.8, 1.0.0 1364 or the 1.1.0 releases. 1365 1366 In environments in which all applications have been ported to 1367 not use any deprecated interfaces OpenSSL's Configure script 1368 should be used with the --api=1.1.0 option to entirely remove 1369 support for the deprecated features from the library and 1370 unconditionally disable them in the installed headers. 1371 Essentially the same effect can be achieved with the "no-deprecated" 1372 argument to Configure, except that this will always restrict 1373 the build to just the latest API, rather than a fixed API 1374 version. 1375 1376 As applications are ported to future revisions of the API, 1377 they should update their compile-time OPENSSL_API_COMPAT define 1378 accordingly, but in most cases should be able to continue to 1379 compile with later releases. 1380 1381 The OPENSSL_API_COMPAT versions for 1.0.0, and 0.9.8 are 1382 0x10000000L and 0x00908000L, respectively. However those 1383 versions did not support the OPENSSL_API_COMPAT feature, and 1384 so applications are not typically tested for explicit support 1385 of just the undeprecated features of either release. 1386 [Viktor Dukhovni] 1387 1388 *) Add support for setting the minimum and maximum supported protocol. 1389 It can bet set via the SSL_set_min_proto_version() and 1390 SSL_set_max_proto_version(), or via the SSL_CONF's MinProtocol and 1391 MaxProtocol. It's recommended to use the new APIs to disable 1392 protocols instead of disabling individual protocols using 1393 SSL_set_options() or SSL_CONF's Protocol. This change also 1394 removes support for disabling TLS 1.2 in the OpenSSL TLS 1395 client at compile time by defining OPENSSL_NO_TLS1_2_CLIENT. 1396 [Kurt Roeckx] 1397 1398 *) Support for ChaCha20 and Poly1305 added to libcrypto and libssl. 1399 [Andy Polyakov] 1400 1401 *) New EC_KEY_METHOD, this replaces the older ECDSA_METHOD and ECDH_METHOD 1402 and integrates ECDSA and ECDH functionality into EC. Implementations can 1403 now redirect key generation and no longer need to convert to or from 1404 ECDSA_SIG format. 1405 1406 Note: the ecdsa.h and ecdh.h headers are now no longer needed and just 1407 include the ec.h header file instead. 1408 [Steve Henson] 1409 1410 *) Remove support for all 40 and 56 bit ciphers. This includes all the export 1411 ciphers who are no longer supported and drops support the ephemeral RSA key 1412 exchange. The LOW ciphers currently doesn't have any ciphers in it. 1413 [Kurt Roeckx] 1414 1415 *) Made EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX, EVP_CIPHER and HMAC_CTX 1416 opaque. For HMAC_CTX, the following constructors and destructors 1417 were added: 1418 1419 HMAC_CTX *HMAC_CTX_new(void); 1420 void HMAC_CTX_free(HMAC_CTX *ctx); 1421 1422 For EVP_MD and EVP_CIPHER, complete APIs to create, fill and 1423 destroy such methods has been added. See EVP_MD_meth_new(3) and 1424 EVP_CIPHER_meth_new(3) for documentation. 1425 1426 Additional changes: 1427 1) EVP_MD_CTX_cleanup(), EVP_CIPHER_CTX_cleanup() and 1428 HMAC_CTX_cleanup() were removed. HMAC_CTX_reset() and 1429 EVP_MD_CTX_reset() should be called instead to reinitialise 1430 an already created structure. 1431 2) For consistency with the majority of our object creators and 1432 destructors, EVP_MD_CTX_(create|destroy) were renamed to 1433 EVP_MD_CTX_(new|free). The old names are retained as macros 1434 for deprecated builds. 1435 [Richard Levitte] 1436 1437 *) Added ASYNC support. Libcrypto now includes the async sub-library to enable 1438 cryptographic operations to be performed asynchronously as long as an 1439 asynchronous capable engine is used. See the ASYNC_start_job() man page for 1440 further details. Libssl has also had this capability integrated with the 1441 introduction of the new mode SSL_MODE_ASYNC and associated error 1442 SSL_ERROR_WANT_ASYNC. See the SSL_CTX_set_mode() and SSL_get_error() man 1443 pages. This work was developed in partnership with Intel Corp. 1444 [Matt Caswell] 1445 1446 *) SSL_{CTX_}set_ecdh_auto() has been removed and ECDH is support is 1447 always enabled now. If you want to disable the support you should 1448 exclude it using the list of supported ciphers. This also means that the 1449 "-no_ecdhe" option has been removed from s_server. 1450 [Kurt Roeckx] 1451 1452 *) SSL_{CTX}_set_tmp_ecdh() which can set 1 EC curve now internally calls 1453 SSL_{CTX_}set1_curves() which can set a list. 1454 [Kurt Roeckx] 1455 1456 *) Remove support for SSL_{CTX_}set_tmp_ecdh_callback(). You should set the 1457 curve you want to support using SSL_{CTX_}set1_curves(). 1458 [Kurt Roeckx] 1459 1460 *) State machine rewrite. The state machine code has been significantly 1461 refactored in order to remove much duplication of code and solve issues 1462 with the old code (see ssl/statem/README for further details). This change 1463 does have some associated API changes. Notably the SSL_state() function 1464 has been removed and replaced by SSL_get_state which now returns an 1465 "OSSL_HANDSHAKE_STATE" instead of an int. SSL_set_state() has been removed 1466 altogether. The previous handshake states defined in ssl.h and ssl3.h have 1467 also been removed. 1468 [Matt Caswell] 1469 1470 *) All instances of the string "ssleay" in the public API were replaced 1471 with OpenSSL (case-matching; e.g., OPENSSL_VERSION for #define's) 1472 Some error codes related to internal RSA_eay API's were renamed. 1473 [Rich Salz] 1474 1475 *) The demo files in crypto/threads were moved to demo/threads. 1476 [Rich Salz] 1477 1478 *) Removed obsolete engines: 4758cca, aep, atalla, cswift, nuron, gmp, 1479 sureware and ubsec. 1480 [Matt Caswell, Rich Salz] 1481 1482 *) New ASN.1 embed macro. 1483 1484 New ASN.1 macro ASN1_EMBED. This is the same as ASN1_SIMPLE except the 1485 structure is not allocated: it is part of the parent. That is instead of 1486 1487 FOO *x; 1488 1489 it must be: 1490 1491 FOO x; 1492 1493 This reduces memory fragmentation and make it impossible to accidentally 1494 set a mandatory field to NULL. 1495 1496 This currently only works for some fields specifically a SEQUENCE, CHOICE, 1497 or ASN1_STRING type which is part of a parent SEQUENCE. Since it is 1498 equivalent to ASN1_SIMPLE it cannot be tagged, OPTIONAL, SET OF or 1499 SEQUENCE OF. 1500 [Steve Henson] 1501 1502 *) Remove EVP_CHECK_DES_KEY, a compile-time option that never compiled. 1503 [Emilia Käsper] 1504 1505 *) Removed DES and RC4 ciphersuites from DEFAULT. Also removed RC2 although 1506 in 1.0.2 EXPORT was already removed and the only RC2 ciphersuite is also 1507 an EXPORT one. COMPLEMENTOFDEFAULT has been updated accordingly to add 1508 DES and RC4 ciphersuites. 1509 [Matt Caswell] 1510 1511 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. 1512 This changes the decoding behaviour for some invalid messages, 1513 though the change is mostly in the more lenient direction, and 1514 legacy behaviour is preserved as much as possible. 1515 [Emilia Käsper] 1516 1517 *) Fix no-stdio build. 1518 [ David Woodhouse <David.Woodhouse@intel.com> and also 1519 Ivan Nestlerode <ivan.nestlerode@sonos.com> ] 1520 1521 *) New testing framework 1522 The testing framework has been largely rewritten and is now using 1523 perl and the perl modules Test::Harness and an extended variant of 1524 Test::More called OpenSSL::Test to do its work. All test scripts in 1525 test/ have been rewritten into test recipes, and all direct calls to 1526 executables in test/Makefile have become individual recipes using the 1527 simplified testing OpenSSL::Test::Simple. 1528 1529 For documentation on our testing modules, do: 1530 1531 perldoc test/testlib/OpenSSL/Test/Simple.pm 1532 perldoc test/testlib/OpenSSL/Test.pm 1533 1534 [Richard Levitte] 1535 1536 *) Revamped memory debug; only -DCRYPTO_MDEBUG and -DCRYPTO_MDEBUG_ABORT 1537 are used; the latter aborts on memory leaks (usually checked on exit). 1538 Some undocumented "set malloc, etc., hooks" functions were removed 1539 and others were changed. All are now documented. 1540 [Rich Salz] 1541 1542 *) In DSA_generate_parameters_ex, if the provided seed is too short, 1543 return an error 1544 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] 1545 1546 *) Rewrite PSK to support ECDHE_PSK, DHE_PSK and RSA_PSK. Add ciphersuites 1547 from RFC4279, RFC4785, RFC5487, RFC5489. 1548 1549 Thanks to Christian J. Dietrich and Giuseppe D'Angelo for the 1550 original RSA_PSK patch. 1551 [Steve Henson] 1552 1553 *) Dropped support for the SSL3_FLAGS_DELAY_CLIENT_FINISHED flag. This SSLeay 1554 era flag was never set throughout the codebase (only read). Also removed 1555 SSL3_FLAGS_POP_BUFFER which was only used if 1556 SSL3_FLAGS_DELAY_CLIENT_FINISHED was also set. 1557 [Matt Caswell] 1558 1559 *) Changed the default name options in the "ca", "crl", "req" and "x509" 1560 to be "oneline" instead of "compat". 1561 [Richard Levitte] 1562 1563 *) Remove SSL_OP_TLS_BLOCK_PADDING_BUG. This is SSLeay legacy, we're 1564 not aware of clients that still exhibit this bug, and the workaround 1565 hasn't been working properly for a while. 1566 [Emilia Käsper] 1567 1568 *) The return type of BIO_number_read() and BIO_number_written() as well as 1569 the corresponding num_read and num_write members in the BIO structure has 1570 changed from unsigned long to uint64_t. On platforms where an unsigned 1571 long is 32 bits (e.g. Windows) these counters could overflow if >4Gb is 1572 transferred. 1573 [Matt Caswell] 1574 1575 *) Given the pervasive nature of TLS extensions it is inadvisable to run 1576 OpenSSL without support for them. It also means that maintaining 1577 the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably 1578 not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed. 1579 [Matt Caswell] 1580 1581 *) Removed support for the two export grade static DH ciphersuites 1582 EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites 1583 were newly added (along with a number of other static DH ciphersuites) to 1584 1.0.2. However the two export ones have *never* worked since they were 1585 introduced. It seems strange in any case to be adding new export 1586 ciphersuites, and given "logjam" it also does not seem correct to fix them. 1587 [Matt Caswell] 1588 1589 *) Version negotiation has been rewritten. In particular SSLv23_method(), 1590 SSLv23_client_method() and SSLv23_server_method() have been deprecated, 1591 and turned into macros which simply call the new preferred function names 1592 TLS_method(), TLS_client_method() and TLS_server_method(). All new code 1593 should use the new names instead. Also as part of this change the ssl23.h 1594 header file has been removed. 1595 [Matt Caswell] 1596 1597 *) Support for Kerberos ciphersuites in TLS (RFC2712) has been removed. This 1598 code and the associated standard is no longer considered fit-for-purpose. 1599 [Matt Caswell] 1600 1601 *) RT2547 was closed. When generating a private key, try to make the 1602 output file readable only by the owner. This behavior change might 1603 be noticeable when interacting with other software. 1604 1605 *) Documented all exdata functions. Added CRYPTO_free_ex_index. 1606 Added a test. 1607 [Rich Salz] 1608 1609 *) Added HTTP GET support to the ocsp command. 1610 [Rich Salz] 1611 1612 *) Changed default digest for the dgst and enc commands from MD5 to 1613 sha256 1614 [Rich Salz] 1615 1616 *) RAND_pseudo_bytes has been deprecated. Users should use RAND_bytes instead. 1617 [Matt Caswell] 1618 1619 *) Added support for TLS extended master secret from 1620 draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an 1621 initial patch which was a great help during development. 1622 [Steve Henson] 1623 1624 *) All libssl internal structures have been removed from the public header 1625 files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is 1626 now redundant). Users should not attempt to access internal structures 1627 directly. Instead they should use the provided API functions. 1628 [Matt Caswell] 1629 1630 *) config has been changed so that by default OPENSSL_NO_DEPRECATED is used. 1631 Access to deprecated functions can be re-enabled by running config with 1632 "enable-deprecated". In addition applications wishing to use deprecated 1633 functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour 1634 will, by default, disable some transitive includes that previously existed 1635 in the header files (e.g. ec.h will no longer, by default, include bn.h) 1636 [Matt Caswell] 1637 1638 *) Added support for OCB mode. OpenSSL has been granted a patent license 1639 compatible with the OpenSSL license for use of OCB. Details are available 1640 at https://www.openssl.org/source/OCB-patent-grant-OpenSSL.pdf. Support 1641 for OCB can be removed by calling config with no-ocb. 1642 [Matt Caswell] 1643 1644 *) SSLv2 support has been removed. It still supports receiving a SSLv2 1645 compatible client hello. 1646 [Kurt Roeckx] 1647 1648 *) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz], 1649 done while fixing the error code for the key-too-small case. 1650 [Annie Yousar <a.yousar@informatik.hu-berlin.de>] 1651 1652 *) CA.sh has been removed; use CA.pl instead. 1653 [Rich Salz] 1654 1655 *) Removed old DES API. 1656 [Rich Salz] 1657 1658 *) Remove various unsupported platforms: 1659 Sony NEWS4 1660 BEOS and BEOS_R5 1661 NeXT 1662 SUNOS 1663 MPE/iX 1664 Sinix/ReliantUNIX RM400 1665 DGUX 1666 NCR 1667 Tandem 1668 Cray 1669 16-bit platforms such as WIN16 1670 [Rich Salz] 1671 1672 *) Clean up OPENSSL_NO_xxx #define's 1673 Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF 1674 Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx 1675 OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC 1676 OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160 1677 OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO 1678 Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY 1679 OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP 1680 OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK 1681 OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY 1682 Remove MS_STATIC; it's a relic from platforms <32 bits. 1683 [Rich Salz] 1684 1685 *) Cleaned up dead code 1686 Remove all but one '#ifdef undef' which is to be looked at. 1687 [Rich Salz] 1688 1689 *) Clean up calling of xxx_free routines. 1690 Just like free(), fix most of the xxx_free routines to accept 1691 NULL. Remove the non-null checks from callers. Save much code. 1692 [Rich Salz] 1693 1694 *) Add secure heap for storage of private keys (when possible). 1695 Add BIO_s_secmem(), CBIGNUM, etc. 1696 Contributed by Akamai Technologies under our Corporate CLA. 1697 [Rich Salz] 1698 1699 *) Experimental support for a new, fast, unbiased prime candidate generator, 1700 bn_probable_prime_dh_coprime(). Not currently used by any prime generator. 1701 [Felix Laurie von Massenbach <felix@erbridge.co.uk>] 1702 1703 *) New output format NSS in the sess_id command line tool. This allows 1704 exporting the session id and the master key in NSS keylog format. 1705 [Martin Kaiser <martin@kaiser.cx>] 1706 1707 *) Harmonize version and its documentation. -f flag is used to display 1708 compilation flags. 1709 [mancha <mancha1@zoho.com>] 1710 1711 *) Fix eckey_priv_encode so it immediately returns an error upon a failure 1712 in i2d_ECPrivateKey. Thanks to Ted Unangst for feedback on this issue. 1713 [mancha <mancha1@zoho.com>] 1714 1715 *) Fix some double frees. These are not thought to be exploitable. 1716 [mancha <mancha1@zoho.com>] 1717 1718 *) A missing bounds check in the handling of the TLS heartbeat extension 1719 can be used to reveal up to 64k of memory to a connected client or 1720 server. 1721 1722 Thanks for Neel Mehta of Google Security for discovering this bug and to 1723 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for 1724 preparing the fix (CVE-2014-0160) 1725 [Adam Langley, Bodo Moeller] 1726 1727 *) Fix for the attack described in the paper "Recovering OpenSSL 1728 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" 1729 by Yuval Yarom and Naomi Benger. Details can be obtained from: 1730 http://eprint.iacr.org/2014/140 1731 1732 Thanks to Yuval Yarom and Naomi Benger for discovering this 1733 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) 1734 [Yuval Yarom and Naomi Benger] 1735 1736 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): 1737 this fixes a limitation in previous versions of OpenSSL. 1738 [Steve Henson] 1739 1740 *) Experimental encrypt-then-mac support. 1741 1742 Experimental support for encrypt then mac from 1743 draft-gutmann-tls-encrypt-then-mac-02.txt 1744 1745 To enable it set the appropriate extension number (0x42 for the test 1746 server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42 1747 1748 For non-compliant peers (i.e. just about everything) this should have no 1749 effect. 1750 1751 WARNING: EXPERIMENTAL, SUBJECT TO CHANGE. 1752 1753 [Steve Henson] 1754 1755 *) Add EVP support for key wrapping algorithms, to avoid problems with 1756 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in 1757 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap 1758 algorithms and include tests cases. 1759 [Steve Henson] 1760 1761 *) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for 1762 enveloped data. 1763 [Steve Henson] 1764 1765 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, 1766 MGF1 digest and OAEP label. 1767 [Steve Henson] 1768 1769 *) Make openssl verify return errors. 1770 [Chris Palmer <palmer@google.com> and Ben Laurie] 1771 1772 *) New function ASN1_TIME_diff to calculate the difference between two 1773 ASN1_TIME structures or one structure and the current time. 1774 [Steve Henson] 1775 1776 *) Update fips_test_suite to support multiple command line options. New 1777 test to induce all self test errors in sequence and check expected 1778 failures. 1779 [Steve Henson] 1780 1781 *) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and 1782 sign or verify all in one operation. 1783 [Steve Henson] 1784 1785 *) Add fips_algvs: a multicall fips utility incorporating all the algorithm 1786 test programs and fips_test_suite. Includes functionality to parse 1787 the minimal script output of fipsalgest.pl directly. 1788 [Steve Henson] 1789 1790 *) Add authorisation parameter to FIPS_module_mode_set(). 1791 [Steve Henson] 1792 1793 *) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves. 1794 [Steve Henson] 1795 1796 *) Use separate DRBG fields for internal and external flags. New function 1797 FIPS_drbg_health_check() to perform on demand health checking. Add 1798 generation tests to fips_test_suite with reduced health check interval to 1799 demonstrate periodic health checking. Add "nodh" option to 1800 fips_test_suite to skip very slow DH test. 1801 [Steve Henson] 1802 1803 *) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers 1804 based on NID. 1805 [Steve Henson] 1806 1807 *) More extensive health check for DRBG checking many more failure modes. 1808 New function FIPS_selftest_drbg_all() to handle every possible DRBG 1809 combination: call this in fips_test_suite. 1810 [Steve Henson] 1811 1812 *) Add support for canonical generation of DSA parameter 'g'. See 1813 FIPS 186-3 A.2.3. 1814 1815 *) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and 1816 POST to handle HMAC cases. 1817 [Steve Henson] 1818 1819 *) Add functions FIPS_module_version() and FIPS_module_version_text() 1820 to return numerical and string versions of the FIPS module number. 1821 [Steve Henson] 1822 1823 *) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and 1824 FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented 1825 outside the validated module in the FIPS capable OpenSSL. 1826 [Steve Henson] 1827 1828 *) Minor change to DRBG entropy callback semantics. In some cases 1829 there is no multiple of the block length between min_len and 1830 max_len. Allow the callback to return more than max_len bytes 1831 of entropy but discard any extra: it is the callback's responsibility 1832 to ensure that the extra data discarded does not impact the 1833 requested amount of entropy. 1834 [Steve Henson] 1835 1836 *) Add PRNG security strength checks to RSA, DSA and ECDSA using 1837 information in FIPS186-3, SP800-57 and SP800-131A. 1838 [Steve Henson] 1839 1840 *) CCM support via EVP. Interface is very similar to GCM case except we 1841 must supply all data in one chunk (i.e. no update, final) and the 1842 message length must be supplied if AAD is used. Add algorithm test 1843 support. 1844 [Steve Henson] 1845 1846 *) Initial version of POST overhaul. Add POST callback to allow the status 1847 of POST to be monitored and/or failures induced. Modify fips_test_suite 1848 to use callback. Always run all selftests even if one fails. 1849 [Steve Henson] 1850 1851 *) XTS support including algorithm test driver in the fips_gcmtest program. 1852 Note: this does increase the maximum key length from 32 to 64 bytes but 1853 there should be no binary compatibility issues as existing applications 1854 will never use XTS mode. 1855 [Steve Henson] 1856 1857 *) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies 1858 to OpenSSL RAND code and replace with a tiny FIPS RAND API which also 1859 performs algorithm blocking for unapproved PRNG types. Also do not 1860 set PRNG type in FIPS_mode_set(): leave this to the application. 1861 Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with 1862 the standard OpenSSL PRNG: set additional data to a date time vector. 1863 [Steve Henson] 1864 1865 *) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*. 1866 This shouldn't present any incompatibility problems because applications 1867 shouldn't be using these directly and any that are will need to rethink 1868 anyway as the X9.31 PRNG is now deprecated by FIPS 140-2 1869 [Steve Henson] 1870 1871 *) Extensive self tests and health checking required by SP800-90 DRBG. 1872 Remove strength parameter from FIPS_drbg_instantiate and always 1873 instantiate at maximum supported strength. 1874 [Steve Henson] 1875 1876 *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing. 1877 [Steve Henson] 1878 1879 *) New algorithm test program fips_dhvs to handle DH primitives only testing. 1880 [Steve Henson] 1881 1882 *) New function DH_compute_key_padded() to compute a DH key and pad with 1883 leading zeroes if needed: this complies with SP800-56A et al. 1884 [Steve Henson] 1885 1886 *) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by 1887 anything, incomplete, subject to change and largely untested at present. 1888 [Steve Henson] 1889 1890 *) Modify fipscanisteronly build option to only build the necessary object 1891 files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile. 1892 [Steve Henson] 1893 1894 *) Add experimental option FIPSSYMS to give all symbols in 1895 fipscanister.o and FIPS or fips prefix. This will avoid 1896 conflicts with future versions of OpenSSL. Add perl script 1897 util/fipsas.pl to preprocess assembly language source files 1898 and rename any affected symbols. 1899 [Steve Henson] 1900 1901 *) Add selftest checks and algorithm block of non-fips algorithms in 1902 FIPS mode. Remove DES2 from selftests. 1903 [Steve Henson] 1904 1905 *) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just 1906 return internal method without any ENGINE dependencies. Add new 1907 tiny fips sign and verify functions. 1908 [Steve Henson] 1909 1910 *) New build option no-ec2m to disable characteristic 2 code. 1911 [Steve Henson] 1912 1913 *) New build option "fipscanisteronly". This only builds fipscanister.o 1914 and (currently) associated fips utilities. Uses the file Makefile.fips 1915 instead of Makefile.org as the prototype. 1916 [Steve Henson] 1917 1918 *) Add some FIPS mode restrictions to GCM. Add internal IV generator. 1919 Update fips_gcmtest to use IV generator. 1920 [Steve Henson] 1921 1922 *) Initial, experimental EVP support for AES-GCM. AAD can be input by 1923 setting output buffer to NULL. The *Final function must be 1924 called although it will not retrieve any additional data. The tag 1925 can be set or retrieved with a ctrl. The IV length is by default 12 1926 bytes (96 bits) but can be set to an alternative value. If the IV 1927 length exceeds the maximum IV length (currently 16 bytes) it cannot be 1928 set before the key. 1929 [Steve Henson] 1930 1931 *) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the 1932 underlying do_cipher function handles all cipher semantics itself 1933 including padding and finalisation. This is useful if (for example) 1934 an ENGINE cipher handles block padding itself. The behaviour of 1935 do_cipher is subtly changed if this flag is set: the return value 1936 is the number of characters written to the output buffer (zero is 1937 no longer an error code) or a negative error code. Also if the 1938 input buffer is NULL and length 0 finalisation should be performed. 1939 [Steve Henson] 1940 1941 *) If a candidate issuer certificate is already part of the constructed 1942 path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case. 1943 [Steve Henson] 1944 1945 *) Improve forward-security support: add functions 1946 1947 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure)) 1948 void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure)) 1949 1950 for use by SSL/TLS servers; the callback function will be called whenever a 1951 new session is created, and gets to decide whether the session may be 1952 cached to make it resumable (return 0) or not (return 1). (As by the 1953 SSL/TLS protocol specifications, the session_id sent by the server will be 1954 empty to indicate that the session is not resumable; also, the server will 1955 not generate RFC 4507 (RFC 5077) session tickets.) 1956 1957 A simple reasonable callback implementation is to return is_forward_secure. 1958 This parameter will be set to 1 or 0 depending on the ciphersuite selected 1959 by the SSL/TLS server library, indicating whether it can provide forward 1960 security. 1961 [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)] 1962 1963 *) New -verify_name option in command line utilities to set verification 1964 parameters by name. 1965 [Steve Henson] 1966 1967 *) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE. 1968 Add CMAC pkey methods. 1969 [Steve Henson] 1970 1971 *) Experimental renegotiation in s_server -www mode. If the client 1972 browses /reneg connection is renegotiated. If /renegcert it is 1973 renegotiated requesting a certificate. 1974 [Steve Henson] 1975 1976 *) Add an "external" session cache for debugging purposes to s_server. This 1977 should help trace issues which normally are only apparent in deployed 1978 multi-process servers. 1979 [Steve Henson] 1980 1981 *) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where 1982 return value is ignored. NB. The functions RAND_add(), RAND_seed(), 1983 BIO_set_cipher() and some obscure PEM functions were changed so they 1984 can now return an error. The RAND changes required a change to the 1985 RAND_METHOD structure. 1986 [Steve Henson] 1987 1988 *) New macro __owur for "OpenSSL Warn Unused Result". This makes use of 1989 a gcc attribute to warn if the result of a function is ignored. This 1990 is enable if DEBUG_UNUSED is set. Add to several functions in evp.h 1991 whose return value is often ignored. 1992 [Steve Henson] 1993 1994 *) New -noct, -requestct, -requirect and -ctlogfile options for s_client. 1995 These allow SCTs (signed certificate timestamps) to be requested and 1996 validated when establishing a connection. 1997 [Rob Percival <robpercival@google.com>] 1998 1999 Changes between 1.0.2g and 1.0.2h [3 May 2016] 2000 2001 *) Prevent padding oracle in AES-NI CBC MAC check 2002 2003 A MITM attacker can use a padding oracle attack to decrypt traffic 2004 when the connection uses an AES CBC cipher and the server support 2005 AES-NI. 2006 2007 This issue was introduced as part of the fix for Lucky 13 padding 2008 attack (CVE-2013-0169). The padding check was rewritten to be in 2009 constant time by making sure that always the same bytes are read and 2010 compared against either the MAC or padding bytes. But it no longer 2011 checked that there was enough data to have both the MAC and padding 2012 bytes. 2013 2014 This issue was reported by Juraj Somorovsky using TLS-Attacker. 2015 (CVE-2016-2107) 2016 [Kurt Roeckx] 2017 2018 *) Fix EVP_EncodeUpdate overflow 2019 2020 An overflow can occur in the EVP_EncodeUpdate() function which is used for 2021 Base64 encoding of binary data. If an attacker is able to supply very large 2022 amounts of input data then a length check can overflow resulting in a heap 2023 corruption. 2024 2025 Internally to OpenSSL the EVP_EncodeUpdate() function is primarily used by 2026 the PEM_write_bio* family of functions. These are mainly used within the 2027 OpenSSL command line applications, so any application which processes data 2028 from an untrusted source and outputs it as a PEM file should be considered 2029 vulnerable to this issue. User applications that call these APIs directly 2030 with large amounts of untrusted data may also be vulnerable. 2031 2032 This issue was reported by Guido Vranken. 2033 (CVE-2016-2105) 2034 [Matt Caswell] 2035 2036 *) Fix EVP_EncryptUpdate overflow 2037 2038 An overflow can occur in the EVP_EncryptUpdate() function. If an attacker 2039 is able to supply very large amounts of input data after a previous call to 2040 EVP_EncryptUpdate() with a partial block then a length check can overflow 2041 resulting in a heap corruption. Following an analysis of all OpenSSL 2042 internal usage of the EVP_EncryptUpdate() function all usage is one of two 2043 forms. The first form is where the EVP_EncryptUpdate() call is known to be 2044 the first called function after an EVP_EncryptInit(), and therefore that 2045 specific call must be safe. The second form is where the length passed to 2046 EVP_EncryptUpdate() can be seen from the code to be some small value and 2047 therefore there is no possibility of an overflow. Since all instances are 2048 one of these two forms, it is believed that there can be no overflows in 2049 internal code due to this problem. It should be noted that 2050 EVP_DecryptUpdate() can call EVP_EncryptUpdate() in certain code paths. 2051 Also EVP_CipherUpdate() is a synonym for EVP_EncryptUpdate(). All instances 2052 of these calls have also been analysed too and it is believed there are no 2053 instances in internal usage where an overflow could occur. 2054 2055 This issue was reported by Guido Vranken. 2056 (CVE-2016-2106) 2057 [Matt Caswell] 2058 2059 *) Prevent ASN.1 BIO excessive memory allocation 2060 2061 When ASN.1 data is read from a BIO using functions such as d2i_CMS_bio() 2062 a short invalid encoding can cause allocation of large amounts of memory 2063 potentially consuming excessive resources or exhausting memory. 2064 2065 Any application parsing untrusted data through d2i BIO functions is 2066 affected. The memory based functions such as d2i_X509() are *not* affected. 2067 Since the memory based functions are used by the TLS library, TLS 2068 applications are not affected. 2069 2070 This issue was reported by Brian Carpenter. 2071 (CVE-2016-2109) 2072 [Stephen Henson] 2073 2074 *) EBCDIC overread 2075 2076 ASN1 Strings that are over 1024 bytes can cause an overread in applications 2077 using the X509_NAME_oneline() function on EBCDIC systems. This could result 2078 in arbitrary stack data being returned in the buffer. 2079 2080 This issue was reported by Guido Vranken. 2081 (CVE-2016-2176) 2082 [Matt Caswell] 2083 2084 *) Modify behavior of ALPN to invoke callback after SNI/servername 2085 callback, such that updates to the SSL_CTX affect ALPN. 2086 [Todd Short] 2087 2088 *) Remove LOW from the DEFAULT cipher list. This removes singles DES from the 2089 default. 2090 [Kurt Roeckx] 2091 2092 *) Only remove the SSLv2 methods with the no-ssl2-method option. When the 2093 methods are enabled and ssl2 is disabled the methods return NULL. 2094 [Kurt Roeckx] 2095 2096 Changes between 1.0.2f and 1.0.2g [1 Mar 2016] 2097 2098 * Disable weak ciphers in SSLv3 and up in default builds of OpenSSL. 2099 Builds that are not configured with "enable-weak-ssl-ciphers" will not 2100 provide any "EXPORT" or "LOW" strength ciphers. 2101 [Viktor Dukhovni] 2102 2103 * Disable SSLv2 default build, default negotiation and weak ciphers. SSLv2 2104 is by default disabled at build-time. Builds that are not configured with 2105 "enable-ssl2" will not support SSLv2. Even if "enable-ssl2" is used, 2106 users who want to negotiate SSLv2 via the version-flexible SSLv23_method() 2107 will need to explicitly call either of: 2108 2109 SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2); 2110 or 2111 SSL_clear_options(ssl, SSL_OP_NO_SSLv2); 2112 2113 as appropriate. Even if either of those is used, or the application 2114 explicitly uses the version-specific SSLv2_method() or its client and 2115 server variants, SSLv2 ciphers vulnerable to exhaustive search key 2116 recovery have been removed. Specifically, the SSLv2 40-bit EXPORT 2117 ciphers, and SSLv2 56-bit DES are no longer available. 2118 (CVE-2016-0800) 2119 [Viktor Dukhovni] 2120 2121 *) Fix a double-free in DSA code 2122 2123 A double free bug was discovered when OpenSSL parses malformed DSA private 2124 keys and could lead to a DoS attack or memory corruption for applications 2125 that receive DSA private keys from untrusted sources. This scenario is 2126 considered rare. 2127 2128 This issue was reported to OpenSSL by Adam Langley(Google/BoringSSL) using 2129 libFuzzer. 2130 (CVE-2016-0705) 2131 [Stephen Henson] 2132 2133 *) Disable SRP fake user seed to address a server memory leak. 2134 2135 Add a new method SRP_VBASE_get1_by_user that handles the seed properly. 2136 2137 SRP_VBASE_get_by_user had inconsistent memory management behaviour. 2138 In order to fix an unavoidable memory leak, SRP_VBASE_get_by_user 2139 was changed to ignore the "fake user" SRP seed, even if the seed 2140 is configured. 2141 2142 Users should use SRP_VBASE_get1_by_user instead. Note that in 2143 SRP_VBASE_get1_by_user, caller must free the returned value. Note 2144 also that even though configuring the SRP seed attempts to hide 2145 invalid usernames by continuing the handshake with fake 2146 credentials, this behaviour is not constant time and no strong 2147 guarantees are made that the handshake is indistinguishable from 2148 that of a valid user. 2149 (CVE-2016-0798) 2150 [Emilia Käsper] 2151 2152 *) Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption 2153 2154 In the BN_hex2bn function the number of hex digits is calculated using an 2155 int value |i|. Later |bn_expand| is called with a value of |i * 4|. For 2156 large values of |i| this can result in |bn_expand| not allocating any 2157 memory because |i * 4| is negative. This can leave the internal BIGNUM data 2158 field as NULL leading to a subsequent NULL ptr deref. For very large values 2159 of |i|, the calculation |i * 4| could be a positive value smaller than |i|. 2160 In this case memory is allocated to the internal BIGNUM data field, but it 2161 is insufficiently sized leading to heap corruption. A similar issue exists 2162 in BN_dec2bn. This could have security consequences if BN_hex2bn/BN_dec2bn 2163 is ever called by user applications with very large untrusted hex/dec data. 2164 This is anticipated to be a rare occurrence. 2165 2166 All OpenSSL internal usage of these functions use data that is not expected 2167 to be untrusted, e.g. config file data or application command line 2168 arguments. If user developed applications generate config file data based 2169 on untrusted data then it is possible that this could also lead to security 2170 consequences. This is also anticipated to be rare. 2171 2172 This issue was reported to OpenSSL by Guido Vranken. 2173 (CVE-2016-0797) 2174 [Matt Caswell] 2175 2176 *) Fix memory issues in BIO_*printf functions 2177 2178 The internal |fmtstr| function used in processing a "%s" format string in 2179 the BIO_*printf functions could overflow while calculating the length of a 2180 string and cause an OOB read when printing very long strings. 2181 2182 Additionally the internal |doapr_outch| function can attempt to write to an 2183 OOB memory location (at an offset from the NULL pointer) in the event of a 2184 memory allocation failure. In 1.0.2 and below this could be caused where 2185 the size of a buffer to be allocated is greater than INT_MAX. E.g. this 2186 could be in processing a very long "%s" format string. Memory leaks can 2187 also occur. 2188 2189 The first issue may mask the second issue dependent on compiler behaviour. 2190 These problems could enable attacks where large amounts of untrusted data 2191 is passed to the BIO_*printf functions. If applications use these functions 2192 in this way then they could be vulnerable. OpenSSL itself uses these 2193 functions when printing out human-readable dumps of ASN.1 data. Therefore 2194 applications that print this data could be vulnerable if the data is from 2195 untrusted sources. OpenSSL command line applications could also be 2196 vulnerable where they print out ASN.1 data, or if untrusted data is passed 2197 as command line arguments. 2198 2199 Libssl is not considered directly vulnerable. Additionally certificates etc 2200 received via remote connections via libssl are also unlikely to be able to 2201 trigger these issues because of message size limits enforced within libssl. 2202 2203 This issue was reported to OpenSSL Guido Vranken. 2204 (CVE-2016-0799) 2205 [Matt Caswell] 2206 2207 *) Side channel attack on modular exponentiation 2208 2209 A side-channel attack was found which makes use of cache-bank conflicts on 2210 the Intel Sandy-Bridge microarchitecture which could lead to the recovery 2211 of RSA keys. The ability to exploit this issue is limited as it relies on 2212 an attacker who has control of code in a thread running on the same 2213 hyper-threaded core as the victim thread which is performing decryptions. 2214 2215 This issue was reported to OpenSSL by Yuval Yarom, The University of 2216 Adelaide and NICTA, Daniel Genkin, Technion and Tel Aviv University, and 2217 Nadia Heninger, University of Pennsylvania with more information at 2218 http://cachebleed.info. 2219 (CVE-2016-0702) 2220 [Andy Polyakov] 2221 2222 *) Change the req app to generate a 2048-bit RSA/DSA key by default, 2223 if no keysize is specified with default_bits. This fixes an 2224 omission in an earlier change that changed all RSA/DSA key generation 2225 apps to use 2048 bits by default. 2226 [Emilia Käsper] 2227 2228 Changes between 1.0.2e and 1.0.2f [28 Jan 2016] 2229 *) DH small subgroups 2230 2231 Historically OpenSSL only ever generated DH parameters based on "safe" 2232 primes. More recently (in version 1.0.2) support was provided for 2233 generating X9.42 style parameter files such as those required for RFC 5114 2234 support. The primes used in such files may not be "safe". Where an 2235 application is using DH configured with parameters based on primes that are 2236 not "safe" then an attacker could use this fact to find a peer's private 2237 DH exponent. This attack requires that the attacker complete multiple 2238 handshakes in which the peer uses the same private DH exponent. For example 2239 this could be used to discover a TLS server's private DH exponent if it's 2240 reusing the private DH exponent or it's using a static DH ciphersuite. 2241 2242 OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in 2243 TLS. It is not on by default. If the option is not set then the server 2244 reuses the same private DH exponent for the life of the server process and 2245 would be vulnerable to this attack. It is believed that many popular 2246 applications do set this option and would therefore not be at risk. 2247 2248 The fix for this issue adds an additional check where a "q" parameter is 2249 available (as is the case in X9.42 based parameters). This detects the 2250 only known attack, and is the only possible defense for static DH 2251 ciphersuites. This could have some performance impact. 2252 2253 Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by 2254 default and cannot be disabled. This could have some performance impact. 2255 2256 This issue was reported to OpenSSL by Antonio Sanso (Adobe). 2257 (CVE-2016-0701) 2258 [Matt Caswell] 2259 2260 *) SSLv2 doesn't block disabled ciphers 2261 2262 A malicious client can negotiate SSLv2 ciphers that have been disabled on 2263 the server and complete SSLv2 handshakes even if all SSLv2 ciphers have 2264 been disabled, provided that the SSLv2 protocol was not also disabled via 2265 SSL_OP_NO_SSLv2. 2266 2267 This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram 2268 and Sebastian Schinzel. 2269 (CVE-2015-3197) 2270 [Viktor Dukhovni] 2271 2272 Changes between 1.0.2d and 1.0.2e [3 Dec 2015] 2273 2274 *) BN_mod_exp may produce incorrect results on x86_64 2275 2276 There is a carry propagating bug in the x86_64 Montgomery squaring 2277 procedure. No EC algorithms are affected. Analysis suggests that attacks 2278 against RSA and DSA as a result of this defect would be very difficult to 2279 perform and are not believed likely. Attacks against DH are considered just 2280 feasible (although very difficult) because most of the work necessary to 2281 deduce information about a private key may be performed offline. The amount 2282 of resources required for such an attack would be very significant and 2283 likely only accessible to a limited number of attackers. An attacker would 2284 additionally need online access to an unpatched system using the target 2285 private key in a scenario with persistent DH parameters and a private 2286 key that is shared between multiple clients. For example this can occur by 2287 default in OpenSSL DHE based SSL/TLS ciphersuites. 2288 2289 This issue was reported to OpenSSL by Hanno Böck. 2290 (CVE-2015-3193) 2291 [Andy Polyakov] 2292 2293 *) Certificate verify crash with missing PSS parameter 2294 2295 The signature verification routines will crash with a NULL pointer 2296 dereference if presented with an ASN.1 signature using the RSA PSS 2297 algorithm and absent mask generation function parameter. Since these 2298 routines are used to verify certificate signature algorithms this can be 2299 used to crash any certificate verification operation and exploited in a 2300 DoS attack. Any application which performs certificate verification is 2301 vulnerable including OpenSSL clients and servers which enable client 2302 authentication. 2303 2304 This issue was reported to OpenSSL by Loïc Jonas Etienne (Qnective AG). 2305 (CVE-2015-3194) 2306 [Stephen Henson] 2307 2308 *) X509_ATTRIBUTE memory leak 2309 2310 When presented with a malformed X509_ATTRIBUTE structure OpenSSL will leak 2311 memory. This structure is used by the PKCS#7 and CMS routines so any 2312 application which reads PKCS#7 or CMS data from untrusted sources is 2313 affected. SSL/TLS is not affected. 2314 2315 This issue was reported to OpenSSL by Adam Langley (Google/BoringSSL) using 2316 libFuzzer. 2317 (CVE-2015-3195) 2318 [Stephen Henson] 2319 2320 *) Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs. 2321 This changes the decoding behaviour for some invalid messages, 2322 though the change is mostly in the more lenient direction, and 2323 legacy behaviour is preserved as much as possible. 2324 [Emilia Käsper] 2325 2326 *) In DSA_generate_parameters_ex, if the provided seed is too short, 2327 return an error 2328 [Rich Salz and Ismo Puustinen <ismo.puustinen@intel.com>] 2329 2330 Changes between 1.0.2c and 1.0.2d [9 Jul 2015] 2331 2332 *) Alternate chains certificate forgery 2333 2334 During certificate verification, OpenSSL will attempt to find an 2335 alternative certificate chain if the first attempt to build such a chain 2336 fails. An error in the implementation of this logic can mean that an 2337 attacker could cause certain checks on untrusted certificates to be 2338 bypassed, such as the CA flag, enabling them to use a valid leaf 2339 certificate to act as a CA and "issue" an invalid certificate. 2340 2341 This issue was reported to OpenSSL by Adam Langley/David Benjamin 2342 (Google/BoringSSL). 2343 [Matt Caswell] 2344 2345 Changes between 1.0.2b and 1.0.2c [12 Jun 2015] 2346 2347 *) Fix HMAC ABI incompatibility. The previous version introduced an ABI 2348 incompatibility in the handling of HMAC. The previous ABI has now been 2349 restored. 2350 [Matt Caswell] 2351 2352 Changes between 1.0.2a and 1.0.2b [11 Jun 2015] 2353 2354 *) Malformed ECParameters causes infinite loop 2355 2356 When processing an ECParameters structure OpenSSL enters an infinite loop 2357 if the curve specified is over a specially malformed binary polynomial 2358 field. 2359 2360 This can be used to perform denial of service against any 2361 system which processes public keys, certificate requests or 2362 certificates. This includes TLS clients and TLS servers with 2363 client authentication enabled. 2364 2365 This issue was reported to OpenSSL by Joseph Barr-Pixton. 2366 (CVE-2015-1788) 2367 [Andy Polyakov] 2368 2369 *) Exploitable out-of-bounds read in X509_cmp_time 2370 2371 X509_cmp_time does not properly check the length of the ASN1_TIME 2372 string and can read a few bytes out of bounds. In addition, 2373 X509_cmp_time accepts an arbitrary number of fractional seconds in the 2374 time string. 2375 2376 An attacker can use this to craft malformed certificates and CRLs of 2377 various sizes and potentially cause a segmentation fault, resulting in 2378 a DoS on applications that verify certificates or CRLs. TLS clients 2379 that verify CRLs are affected. TLS clients and servers with client 2380 authentication enabled may be affected if they use custom verification 2381 callbacks. 2382 2383 This issue was reported to OpenSSL by Robert Swiecki (Google), and 2384 independently by Hanno Böck. 2385 (CVE-2015-1789) 2386 [Emilia Käsper] 2387 2388 *) PKCS7 crash with missing EnvelopedContent 2389 2390 The PKCS#7 parsing code does not handle missing inner EncryptedContent 2391 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs 2392 with missing content and trigger a NULL pointer dereference on parsing. 2393 2394 Applications that decrypt PKCS#7 data or otherwise parse PKCS#7 2395 structures from untrusted sources are affected. OpenSSL clients and 2396 servers are not affected. 2397 2398 This issue was reported to OpenSSL by Michal Zalewski (Google). 2399 (CVE-2015-1790) 2400 [Emilia Käsper] 2401 2402 *) CMS verify infinite loop with unknown hash function 2403 2404 When verifying a signedData message the CMS code can enter an infinite loop 2405 if presented with an unknown hash function OID. This can be used to perform 2406 denial of service against any system which verifies signedData messages using 2407 the CMS code. 2408 This issue was reported to OpenSSL by Johannes Bauer. 2409 (CVE-2015-1792) 2410 [Stephen Henson] 2411 2412 *) Race condition handling NewSessionTicket 2413 2414 If a NewSessionTicket is received by a multi-threaded client when attempting to 2415 reuse a previous ticket then a race condition can occur potentially leading to 2416 a double free of the ticket data. 2417 (CVE-2015-1791) 2418 [Matt Caswell] 2419 2420 *) Only support 256-bit or stronger elliptic curves with the 2421 'ecdh_auto' setting (server) or by default (client). Of supported 2422 curves, prefer P-256 (both). 2423 [Emilia Kasper] 2424 2425 Changes between 1.0.2 and 1.0.2a [19 Mar 2015] 2426 2427 *) ClientHello sigalgs DoS fix 2428 2429 If a client connects to an OpenSSL 1.0.2 server and renegotiates with an 2430 invalid signature algorithms extension a NULL pointer dereference will 2431 occur. This can be exploited in a DoS attack against the server. 2432 2433 This issue was was reported to OpenSSL by David Ramos of Stanford 2434 University. 2435 (CVE-2015-0291) 2436 [Stephen Henson and Matt Caswell] 2437 2438 *) Multiblock corrupted pointer fix 2439 2440 OpenSSL 1.0.2 introduced the "multiblock" performance improvement. This 2441 feature only applies on 64 bit x86 architecture platforms that support AES 2442 NI instructions. A defect in the implementation of "multiblock" can cause 2443 OpenSSL's internal write buffer to become incorrectly set to NULL when 2444 using non-blocking IO. Typically, when the user application is using a 2445 socket BIO for writing, this will only result in a failed connection. 2446 However if some other BIO is used then it is likely that a segmentation 2447 fault will be triggered, thus enabling a potential DoS attack. 2448 2449 This issue was reported to OpenSSL by Daniel Danner and Rainer Mueller. 2450 (CVE-2015-0290) 2451 [Matt Caswell] 2452 2453 *) Segmentation fault in DTLSv1_listen fix 2454 2455 The DTLSv1_listen function is intended to be stateless and processes the 2456 initial ClientHello from many peers. It is common for user code to loop 2457 over the call to DTLSv1_listen until a valid ClientHello is received with 2458 an associated cookie. A defect in the implementation of DTLSv1_listen means 2459 that state is preserved in the SSL object from one invocation to the next 2460 that can lead to a segmentation fault. Errors processing the initial 2461 ClientHello can trigger this scenario. An example of such an error could be 2462 that a DTLS1.0 only client is attempting to connect to a DTLS1.2 only 2463 server. 2464 2465 This issue was reported to OpenSSL by Per Allansson. 2466 (CVE-2015-0207) 2467 [Matt Caswell] 2468 2469 *) Segmentation fault in ASN1_TYPE_cmp fix 2470 2471 The function ASN1_TYPE_cmp will crash with an invalid read if an attempt is 2472 made to compare ASN.1 boolean types. Since ASN1_TYPE_cmp is used to check 2473 certificate signature algorithm consistency this can be used to crash any 2474 certificate verification operation and exploited in a DoS attack. Any 2475 application which performs certificate verification is vulnerable including 2476 OpenSSL clients and servers which enable client authentication. 2477 (CVE-2015-0286) 2478 [Stephen Henson] 2479 2480 *) Segmentation fault for invalid PSS parameters fix 2481 2482 The signature verification routines will crash with a NULL pointer 2483 dereference if presented with an ASN.1 signature using the RSA PSS 2484 algorithm and invalid parameters. Since these routines are used to verify 2485 certificate signature algorithms this can be used to crash any 2486 certificate verification operation and exploited in a DoS attack. Any 2487 application which performs certificate verification is vulnerable including 2488 OpenSSL clients and servers which enable client authentication. 2489 2490 This issue was was reported to OpenSSL by Brian Carpenter. 2491 (CVE-2015-0208) 2492 [Stephen Henson] 2493 2494 *) ASN.1 structure reuse memory corruption fix 2495 2496 Reusing a structure in ASN.1 parsing may allow an attacker to cause 2497 memory corruption via an invalid write. Such reuse is and has been 2498 strongly discouraged and is believed to be rare. 2499 2500 Applications that parse structures containing CHOICE or ANY DEFINED BY 2501 components may be affected. Certificate parsing (d2i_X509 and related 2502 functions) are however not affected. OpenSSL clients and servers are 2503 not affected. 2504 (CVE-2015-0287) 2505 [Stephen Henson] 2506 2507 *) PKCS7 NULL pointer dereferences fix 2508 2509 The PKCS#7 parsing code does not handle missing outer ContentInfo 2510 correctly. An attacker can craft malformed ASN.1-encoded PKCS#7 blobs with 2511 missing content and trigger a NULL pointer dereference on parsing. 2512 2513 Applications that verify PKCS#7 signatures, decrypt PKCS#7 data or 2514 otherwise parse PKCS#7 structures from untrusted sources are 2515 affected. OpenSSL clients and servers are not affected. 2516 2517 This issue was reported to OpenSSL by Michal Zalewski (Google). 2518 (CVE-2015-0289) 2519 [Emilia Käsper] 2520 2521 *) DoS via reachable assert in SSLv2 servers fix 2522 2523 A malicious client can trigger an OPENSSL_assert (i.e., an abort) in 2524 servers that both support SSLv2 and enable export cipher suites by sending 2525 a specially crafted SSLv2 CLIENT-MASTER-KEY message. 2526 2527 This issue was discovered by Sean Burford (Google) and Emilia Käsper 2528 (OpenSSL development team). 2529 (CVE-2015-0293) 2530 [Emilia Käsper] 2531 2532 *) Empty CKE with client auth and DHE fix 2533 2534 If client auth is used then a server can seg fault in the event of a DHE 2535 ciphersuite being selected and a zero length ClientKeyExchange message 2536 being sent by the client. This could be exploited in a DoS attack. 2537 (CVE-2015-1787) 2538 [Matt Caswell] 2539 2540 *) Handshake with unseeded PRNG fix 2541 2542 Under certain conditions an OpenSSL 1.0.2 client can complete a handshake 2543 with an unseeded PRNG. The conditions are: 2544 - The client is on a platform where the PRNG has not been seeded 2545 automatically, and the user has not seeded manually 2546 - A protocol specific client method version has been used (i.e. not 2547 SSL_client_methodv23) 2548 - A ciphersuite is used that does not require additional random data from 2549 the PRNG beyond the initial ClientHello client random (e.g. PSK-RC4-SHA). 2550 2551 If the handshake succeeds then the client random that has been used will 2552 have been generated from a PRNG with insufficient entropy and therefore the 2553 output may be predictable. 2554 2555 For example using the following command with an unseeded openssl will 2556 succeed on an unpatched platform: 2557 2558 openssl s_client -psk 1a2b3c4d -tls1_2 -cipher PSK-RC4-SHA 2559 (CVE-2015-0285) 2560 [Matt Caswell] 2561 2562 *) Use After Free following d2i_ECPrivatekey error fix 2563 2564 A malformed EC private key file consumed via the d2i_ECPrivateKey function 2565 could cause a use after free condition. This, in turn, could cause a double 2566 free in several private key parsing functions (such as d2i_PrivateKey 2567 or EVP_PKCS82PKEY) and could lead to a DoS attack or memory corruption 2568 for applications that receive EC private keys from untrusted 2569 sources. This scenario is considered rare. 2570 2571 This issue was discovered by the BoringSSL project and fixed in their 2572 commit 517073cd4b. 2573 (CVE-2015-0209) 2574 [Matt Caswell] 2575 2576 *) X509_to_X509_REQ NULL pointer deref fix 2577 2578 The function X509_to_X509_REQ will crash with a NULL pointer dereference if 2579 the certificate key is invalid. This function is rarely used in practice. 2580 2581 This issue was discovered by Brian Carpenter. 2582 (CVE-2015-0288) 2583 [Stephen Henson] 2584 2585 *) Removed the export ciphers from the DEFAULT ciphers 2586 [Kurt Roeckx] 2587 2588 Changes between 1.0.1l and 1.0.2 [22 Jan 2015] 2589 2590 *) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g. 2591 ARMv5 through ARMv8, as opposite to "locking" it to single one. 2592 So far those who have to target multiple platforms would compromise 2593 and argue that binary targeting say ARMv5 would still execute on 2594 ARMv8. "Universal" build resolves this compromise by providing 2595 near-optimal performance even on newer platforms. 2596 [Andy Polyakov] 2597 2598 *) Accelerated NIST P-256 elliptic curve implementation for x86_64 2599 (other platforms pending). 2600 [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov] 2601 2602 *) Add support for the SignedCertificateTimestampList certificate and 2603 OCSP response extensions from RFC6962. 2604 [Rob Stradling] 2605 2606 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 2607 for corner cases. (Certain input points at infinity could lead to 2608 bogus results, with non-infinity inputs mapped to infinity too.) 2609 [Bodo Moeller] 2610 2611 *) Initial support for PowerISA 2.0.7, first implemented in POWER8. 2612 This covers AES, SHA256/512 and GHASH. "Initial" means that most 2613 common cases are optimized and there still is room for further 2614 improvements. Vector Permutation AES for Altivec is also added. 2615 [Andy Polyakov] 2616 2617 *) Add support for little-endian ppc64 Linux target. 2618 [Marcelo Cerri (IBM)] 2619 2620 *) Initial support for AMRv8 ISA crypto extensions. This covers AES, 2621 SHA1, SHA256 and GHASH. "Initial" means that most common cases 2622 are optimized and there still is room for further improvements. 2623 Both 32- and 64-bit modes are supported. 2624 [Andy Polyakov, Ard Biesheuvel (Linaro)] 2625 2626 *) Improved ARMv7 NEON support. 2627 [Andy Polyakov] 2628 2629 *) Support for SPARC Architecture 2011 crypto extensions, first 2630 implemented in SPARC T4. This covers AES, DES, Camellia, SHA1, 2631 SHA256/512, MD5, GHASH and modular exponentiation. 2632 [Andy Polyakov, David Miller] 2633 2634 *) Accelerated modular exponentiation for Intel processors, a.k.a. 2635 RSAZ. 2636 [Shay Gueron & Vlad Krasnov (Intel Corp)] 2637 2638 *) Support for new and upcoming Intel processors, including AVX2, 2639 BMI and SHA ISA extensions. This includes additional "stitched" 2640 implementations, AESNI-SHA256 and GCM, and multi-buffer support 2641 for TLS encrypt. 2642 2643 This work was sponsored by Intel Corp. 2644 [Andy Polyakov] 2645 2646 *) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method() 2647 supports both DTLS 1.2 and 1.0 and should use whatever version the peer 2648 supports and DTLSv1_2_*_method() which supports DTLS 1.2 only. 2649 [Steve Henson] 2650 2651 *) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file(): 2652 this fixes a limitation in previous versions of OpenSSL. 2653 [Steve Henson] 2654 2655 *) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest, 2656 MGF1 digest and OAEP label. 2657 [Steve Henson] 2658 2659 *) Add EVP support for key wrapping algorithms, to avoid problems with 2660 existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in 2661 the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap 2662 algorithms and include tests cases. 2663 [Steve Henson] 2664 2665 *) Add functions to allocate and set the fields of an ECDSA_METHOD 2666 structure. 2667 [Douglas E. Engert, Steve Henson] 2668 2669 *) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the 2670 difference in days and seconds between two tm or ASN1_TIME structures. 2671 [Steve Henson] 2672 2673 *) Add -rev test option to s_server to just reverse order of characters 2674 received by client and send back to server. Also prints an abbreviated 2675 summary of the connection parameters. 2676 [Steve Henson] 2677 2678 *) New option -brief for s_client and s_server to print out a brief summary 2679 of connection parameters. 2680 [Steve Henson] 2681 2682 *) Add callbacks for arbitrary TLS extensions. 2683 [Trevor Perrin <trevp@trevp.net> and Ben Laurie] 2684 2685 *) New option -crl_download in several openssl utilities to download CRLs 2686 from CRLDP extension in certificates. 2687 [Steve Henson] 2688 2689 *) New options -CRL and -CRLform for s_client and s_server for CRLs. 2690 [Steve Henson] 2691 2692 *) New function X509_CRL_diff to generate a delta CRL from the difference 2693 of two full CRLs. Add support to "crl" utility. 2694 [Steve Henson] 2695 2696 *) New functions to set lookup_crls function and to retrieve 2697 X509_STORE from X509_STORE_CTX. 2698 [Steve Henson] 2699 2700 *) Print out deprecated issuer and subject unique ID fields in 2701 certificates. 2702 [Steve Henson] 2703 2704 *) Extend OCSP I/O functions so they can be used for simple general purpose 2705 HTTP as well as OCSP. New wrapper function which can be used to download 2706 CRLs using the OCSP API. 2707 [Steve Henson] 2708 2709 *) Delegate command line handling in s_client/s_server to SSL_CONF APIs. 2710 [Steve Henson] 2711 2712 *) SSL_CONF* functions. These provide a common framework for application 2713 configuration using configuration files or command lines. 2714 [Steve Henson] 2715 2716 *) SSL/TLS tracing code. This parses out SSL/TLS records using the 2717 message callback and prints the results. Needs compile time option 2718 "enable-ssl-trace". New options to s_client and s_server to enable 2719 tracing. 2720 [Steve Henson] 2721 2722 *) New ctrl and macro to retrieve supported points extensions. 2723 Print out extension in s_server and s_client. 2724 [Steve Henson] 2725 2726 *) New functions to retrieve certificate signature and signature 2727 OID NID. 2728 [Steve Henson] 2729 2730 *) Add functions to retrieve and manipulate the raw cipherlist sent by a 2731 client to OpenSSL. 2732 [Steve Henson] 2733 2734 *) New Suite B modes for TLS code. These use and enforce the requirements 2735 of RFC6460: restrict ciphersuites, only permit Suite B algorithms and 2736 only use Suite B curves. The Suite B modes can be set by using the 2737 strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring. 2738 [Steve Henson] 2739 2740 *) New chain verification flags for Suite B levels of security. Check 2741 algorithms are acceptable when flags are set in X509_verify_cert. 2742 [Steve Henson] 2743 2744 *) Make tls1_check_chain return a set of flags indicating checks passed 2745 by a certificate chain. Add additional tests to handle client 2746 certificates: checks for matching certificate type and issuer name 2747 comparison. 2748 [Steve Henson] 2749 2750 *) If an attempt is made to use a signature algorithm not in the peer 2751 preference list abort the handshake. If client has no suitable 2752 signature algorithms in response to a certificate request do not 2753 use the certificate. 2754 [Steve Henson] 2755 2756 *) If server EC tmp key is not in client preference list abort handshake. 2757 [Steve Henson] 2758 2759 *) Add support for certificate stores in CERT structure. This makes it 2760 possible to have different stores per SSL structure or one store in 2761 the parent SSL_CTX. Include distinct stores for certificate chain 2762 verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN 2763 to build and store a certificate chain in CERT structure: returning 2764 an error if the chain cannot be built: this will allow applications 2765 to test if a chain is correctly configured. 2766 2767 Note: if the CERT based stores are not set then the parent SSL_CTX 2768 store is used to retain compatibility with existing behaviour. 2769 2770 [Steve Henson] 2771 2772 *) New function ssl_set_client_disabled to set a ciphersuite disabled 2773 mask based on the current session, check mask when sending client 2774 hello and checking the requested ciphersuite. 2775 [Steve Henson] 2776 2777 *) New ctrls to retrieve and set certificate types in a certificate 2778 request message. Print out received values in s_client. If certificate 2779 types is not set with custom values set sensible values based on 2780 supported signature algorithms. 2781 [Steve Henson] 2782 2783 *) Support for distinct client and server supported signature algorithms. 2784 [Steve Henson] 2785 2786 *) Add certificate callback. If set this is called whenever a certificate 2787 is required by client or server. An application can decide which 2788 certificate chain to present based on arbitrary criteria: for example 2789 supported signature algorithms. Add very simple example to s_server. 2790 This fixes many of the problems and restrictions of the existing client 2791 certificate callback: for example you can now clear an existing 2792 certificate and specify the whole chain. 2793 [Steve Henson] 2794 2795 *) Add new "valid_flags" field to CERT_PKEY structure which determines what 2796 the certificate can be used for (if anything). Set valid_flags field 2797 in new tls1_check_chain function. Simplify ssl_set_cert_masks which used 2798 to have similar checks in it. 2799 2800 Add new "cert_flags" field to CERT structure and include a "strict mode". 2801 This enforces some TLS certificate requirements (such as only permitting 2802 certificate signature algorithms contained in the supported algorithms 2803 extension) which some implementations ignore: this option should be used 2804 with caution as it could cause interoperability issues. 2805 [Steve Henson] 2806 2807 *) Update and tidy signature algorithm extension processing. Work out 2808 shared signature algorithms based on preferences and peer algorithms 2809 and print them out in s_client and s_server. Abort handshake if no 2810 shared signature algorithms. 2811 [Steve Henson] 2812 2813 *) Add new functions to allow customised supported signature algorithms 2814 for SSL and SSL_CTX structures. Add options to s_client and s_server 2815 to support them. 2816 [Steve Henson] 2817 2818 *) New function SSL_certs_clear() to delete all references to certificates 2819 from an SSL structure. Before this once a certificate had been added 2820 it couldn't be removed. 2821 [Steve Henson] 2822 2823 *) Integrate hostname, email address and IP address checking with certificate 2824 verification. New verify options supporting checking in openssl utility. 2825 [Steve Henson] 2826 2827 *) Fixes and wildcard matching support to hostname and email checking 2828 functions. Add manual page. 2829 [Florian Weimer (Red Hat Product Security Team)] 2830 2831 *) New functions to check a hostname email or IP address against a 2832 certificate. Add options x509 utility to print results of checks against 2833 a certificate. 2834 [Steve Henson] 2835 2836 *) Fix OCSP checking. 2837 [Rob Stradling <rob.stradling@comodo.com> and Ben Laurie] 2838 2839 *) Initial experimental support for explicitly trusted non-root CAs. 2840 OpenSSL still tries to build a complete chain to a root but if an 2841 intermediate CA has a trust setting included that is used. The first 2842 setting is used: whether to trust (e.g., -addtrust option to the x509 2843 utility) or reject. 2844 [Steve Henson] 2845 2846 *) Add -trusted_first option which attempts to find certificates in the 2847 trusted store even if an untrusted chain is also supplied. 2848 [Steve Henson] 2849 2850 *) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE, 2851 platform support for Linux and Android. 2852 [Andy Polyakov] 2853 2854 *) Support for linux-x32, ILP32 environment in x86_64 framework. 2855 [Andy Polyakov] 2856 2857 *) Experimental multi-implementation support for FIPS capable OpenSSL. 2858 When in FIPS mode the approved implementations are used as normal, 2859 when not in FIPS mode the internal unapproved versions are used instead. 2860 This means that the FIPS capable OpenSSL isn't forced to use the 2861 (often lower performance) FIPS implementations outside FIPS mode. 2862 [Steve Henson] 2863 2864 *) Transparently support X9.42 DH parameters when calling 2865 PEM_read_bio_DHparameters. This means existing applications can handle 2866 the new parameter format automatically. 2867 [Steve Henson] 2868 2869 *) Initial experimental support for X9.42 DH parameter format: mainly 2870 to support use of 'q' parameter for RFC5114 parameters. 2871 [Steve Henson] 2872 2873 *) Add DH parameters from RFC5114 including test data to dhtest. 2874 [Steve Henson] 2875 2876 *) Support for automatic EC temporary key parameter selection. If enabled 2877 the most preferred EC parameters are automatically used instead of 2878 hardcoded fixed parameters. Now a server just has to call: 2879 SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically 2880 support ECDH and use the most appropriate parameters. 2881 [Steve Henson] 2882 2883 *) Enhance and tidy EC curve and point format TLS extension code. Use 2884 static structures instead of allocation if default values are used. 2885 New ctrls to set curves we wish to support and to retrieve shared curves. 2886 Print out shared curves in s_server. New options to s_server and s_client 2887 to set list of supported curves. 2888 [Steve Henson] 2889 2890 *) New ctrls to retrieve supported signature algorithms and 2891 supported curve values as an array of NIDs. Extend openssl utility 2892 to print out received values. 2893 [Steve Henson] 2894 2895 *) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert 2896 between NIDs and the more common NIST names such as "P-256". Enhance 2897 ecparam utility and ECC method to recognise the NIST names for curves. 2898 [Steve Henson] 2899 2900 *) Enhance SSL/TLS certificate chain handling to support different 2901 chains for each certificate instead of one chain in the parent SSL_CTX. 2902 [Steve Henson] 2903 2904 *) Support for fixed DH ciphersuite client authentication: where both 2905 server and client use DH certificates with common parameters. 2906 [Steve Henson] 2907 2908 *) Support for fixed DH ciphersuites: those requiring DH server 2909 certificates. 2910 [Steve Henson] 2911 2912 *) New function i2d_re_X509_tbs for re-encoding the TBS portion of 2913 the certificate. 2914 Note: Related 1.0.2-beta specific macros X509_get_cert_info, 2915 X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and 2916 X509_CINF_get_signature were reverted post internal team review. 2917 2918 Changes between 1.0.1k and 1.0.1l [15 Jan 2015] 2919 2920 *) Build fixes for the Windows and OpenVMS platforms 2921 [Matt Caswell and Richard Levitte] 2922 2923 Changes between 1.0.1j and 1.0.1k [8 Jan 2015] 2924 2925 *) Fix DTLS segmentation fault in dtls1_get_record. A carefully crafted DTLS 2926 message can cause a segmentation fault in OpenSSL due to a NULL pointer 2927 dereference. This could lead to a Denial Of Service attack. Thanks to 2928 Markus Stenberg of Cisco Systems, Inc. for reporting this issue. 2929 (CVE-2014-3571) 2930 [Steve Henson] 2931 2932 *) Fix DTLS memory leak in dtls1_buffer_record. A memory leak can occur in the 2933 dtls1_buffer_record function under certain conditions. In particular this 2934 could occur if an attacker sent repeated DTLS records with the same 2935 sequence number but for the next epoch. The memory leak could be exploited 2936 by an attacker in a Denial of Service attack through memory exhaustion. 2937 Thanks to Chris Mueller for reporting this issue. 2938 (CVE-2015-0206) 2939 [Matt Caswell] 2940 2941 *) Fix issue where no-ssl3 configuration sets method to NULL. When openssl is 2942 built with the no-ssl3 option and a SSL v3 ClientHello is received the ssl 2943 method would be set to NULL which could later result in a NULL pointer 2944 dereference. Thanks to Frank Schmirler for reporting this issue. 2945 (CVE-2014-3569) 2946 [Kurt Roeckx] 2947 2948 *) Abort handshake if server key exchange message is omitted for ephemeral 2949 ECDH ciphersuites. 2950 2951 Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for 2952 reporting this issue. 2953 (CVE-2014-3572) 2954 [Steve Henson] 2955 2956 *) Remove non-export ephemeral RSA code on client and server. This code 2957 violated the TLS standard by allowing the use of temporary RSA keys in 2958 non-export ciphersuites and could be used by a server to effectively 2959 downgrade the RSA key length used to a value smaller than the server 2960 certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at 2961 INRIA or reporting this issue. 2962 (CVE-2015-0204) 2963 [Steve Henson] 2964 2965 *) Fixed issue where DH client certificates are accepted without verification. 2966 An OpenSSL server will accept a DH certificate for client authentication 2967 without the certificate verify message. This effectively allows a client to 2968 authenticate without the use of a private key. This only affects servers 2969 which trust a client certificate authority which issues certificates 2970 containing DH keys: these are extremely rare and hardly ever encountered. 2971 Thanks for Karthikeyan Bhargavan of the PROSECCO team at INRIA or reporting 2972 this issue. 2973 (CVE-2015-0205) 2974 [Steve Henson] 2975 2976 *) Ensure that the session ID context of an SSL is updated when its 2977 SSL_CTX is updated via SSL_set_SSL_CTX. 2978 2979 The session ID context is typically set from the parent SSL_CTX, 2980 and can vary with the CTX. 2981 [Adam Langley] 2982 2983 *) Fix various certificate fingerprint issues. 2984 2985 By using non-DER or invalid encodings outside the signed portion of a 2986 certificate the fingerprint can be changed without breaking the signature. 2987 Although no details of the signed portion of the certificate can be changed 2988 this can cause problems with some applications: e.g. those using the 2989 certificate fingerprint for blacklists. 2990 2991 1. Reject signatures with non zero unused bits. 2992 2993 If the BIT STRING containing the signature has non zero unused bits reject 2994 the signature. All current signature algorithms require zero unused bits. 2995 2996 2. Check certificate algorithm consistency. 2997 2998 Check the AlgorithmIdentifier inside TBS matches the one in the 2999 certificate signature. NB: this will result in signature failure 3000 errors for some broken certificates. 3001 3002 Thanks to Konrad Kraszewski from Google for reporting this issue. 3003 3004 3. Check DSA/ECDSA signatures use DER. 3005 3006 Re-encode DSA/ECDSA signatures and compare with the original received 3007 signature. Return an error if there is a mismatch. 3008 3009 This will reject various cases including garbage after signature 3010 (thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS 3011 program for discovering this case) and use of BER or invalid ASN.1 INTEGERs 3012 (negative or with leading zeroes). 3013 3014 Further analysis was conducted and fixes were developed by Stephen Henson 3015 of the OpenSSL core team. 3016 3017 (CVE-2014-8275) 3018 [Steve Henson] 3019 3020 *) Correct Bignum squaring. Bignum squaring (BN_sqr) may produce incorrect 3021 results on some platforms, including x86_64. This bug occurs at random 3022 with a very low probability, and is not known to be exploitable in any 3023 way, though its exact impact is difficult to determine. Thanks to Pieter 3024 Wuille (Blockstream) who reported this issue and also suggested an initial 3025 fix. Further analysis was conducted by the OpenSSL development team and 3026 Adam Langley of Google. The final fix was developed by Andy Polyakov of 3027 the OpenSSL core team. 3028 (CVE-2014-3570) 3029 [Andy Polyakov] 3030 3031 *) Do not resume sessions on the server if the negotiated protocol 3032 version does not match the session's version. Resuming with a different 3033 version, while not strictly forbidden by the RFC, is of questionable 3034 sanity and breaks all known clients. 3035 [David Benjamin, Emilia Käsper] 3036 3037 *) Tighten handling of the ChangeCipherSpec (CCS) message: reject 3038 early CCS messages during renegotiation. (Note that because 3039 renegotiation is encrypted, this early CCS was not exploitable.) 3040 [Emilia Käsper] 3041 3042 *) Tighten client-side session ticket handling during renegotiation: 3043 ensure that the client only accepts a session ticket if the server sends 3044 the extension anew in the ServerHello. Previously, a TLS client would 3045 reuse the old extension state and thus accept a session ticket if one was 3046 announced in the initial ServerHello. 3047 3048 Similarly, ensure that the client requires a session ticket if one 3049 was advertised in the ServerHello. Previously, a TLS client would 3050 ignore a missing NewSessionTicket message. 3051 [Emilia Käsper] 3052 3053 Changes between 1.0.1i and 1.0.1j [15 Oct 2014] 3054 3055 *) SRTP Memory Leak. 3056 3057 A flaw in the DTLS SRTP extension parsing code allows an attacker, who 3058 sends a carefully crafted handshake message, to cause OpenSSL to fail 3059 to free up to 64k of memory causing a memory leak. This could be 3060 exploited in a Denial Of Service attack. This issue affects OpenSSL 3061 1.0.1 server implementations for both SSL/TLS and DTLS regardless of 3062 whether SRTP is used or configured. Implementations of OpenSSL that 3063 have been compiled with OPENSSL_NO_SRTP defined are not affected. 3064 3065 The fix was developed by the OpenSSL team. 3066 (CVE-2014-3513) 3067 [OpenSSL team] 3068 3069 *) Session Ticket Memory Leak. 3070 3071 When an OpenSSL SSL/TLS/DTLS server receives a session ticket the 3072 integrity of that ticket is first verified. In the event of a session 3073 ticket integrity check failing, OpenSSL will fail to free memory 3074 causing a memory leak. By sending a large number of invalid session 3075 tickets an attacker could exploit this issue in a Denial Of Service 3076 attack. 3077 (CVE-2014-3567) 3078 [Steve Henson] 3079 3080 *) Build option no-ssl3 is incomplete. 3081 3082 When OpenSSL is configured with "no-ssl3" as a build option, servers 3083 could accept and complete a SSL 3.0 handshake, and clients could be 3084 configured to send them. 3085 (CVE-2014-3568) 3086 [Akamai and the OpenSSL team] 3087 3088 *) Add support for TLS_FALLBACK_SCSV. 3089 Client applications doing fallback retries should call 3090 SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV). 3091 (CVE-2014-3566) 3092 [Adam Langley, Bodo Moeller] 3093 3094 *) Add additional DigestInfo checks. 3095 3096 Re-encode DigestInto in DER and check against the original when 3097 verifying RSA signature: this will reject any improperly encoded 3098 DigestInfo structures. 3099 3100 Note: this is a precautionary measure and no attacks are currently known. 3101 3102 [Steve Henson] 3103 3104 Changes between 1.0.1h and 1.0.1i [6 Aug 2014] 3105 3106 *) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the 3107 SRP code can be overrun an internal buffer. Add sanity check that 3108 g, A, B < N to SRP code. 3109 3110 Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC 3111 Group for discovering this issue. 3112 (CVE-2014-3512) 3113 [Steve Henson] 3114 3115 *) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate 3116 TLS 1.0 instead of higher protocol versions when the ClientHello message 3117 is badly fragmented. This allows a man-in-the-middle attacker to force a 3118 downgrade to TLS 1.0 even if both the server and the client support a 3119 higher protocol version, by modifying the client's TLS records. 3120 3121 Thanks to David Benjamin and Adam Langley (Google) for discovering and 3122 researching this issue. 3123 (CVE-2014-3511) 3124 [David Benjamin] 3125 3126 *) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject 3127 to a denial of service attack. A malicious server can crash the client 3128 with a null pointer dereference (read) by specifying an anonymous (EC)DH 3129 ciphersuite and sending carefully crafted handshake messages. 3130 3131 Thanks to Felix Gröbert (Google) for discovering and researching this 3132 issue. 3133 (CVE-2014-3510) 3134 [Emilia Käsper] 3135 3136 *) By sending carefully crafted DTLS packets an attacker could cause openssl 3137 to leak memory. This can be exploited through a Denial of Service attack. 3138 Thanks to Adam Langley for discovering and researching this issue. 3139 (CVE-2014-3507) 3140 [Adam Langley] 3141 3142 *) An attacker can force openssl to consume large amounts of memory whilst 3143 processing DTLS handshake messages. This can be exploited through a 3144 Denial of Service attack. 3145 Thanks to Adam Langley for discovering and researching this issue. 3146 (CVE-2014-3506) 3147 [Adam Langley] 3148 3149 *) An attacker can force an error condition which causes openssl to crash 3150 whilst processing DTLS packets due to memory being freed twice. This 3151 can be exploited through a Denial of Service attack. 3152 Thanks to Adam Langley and Wan-Teh Chang for discovering and researching 3153 this issue. 3154 (CVE-2014-3505) 3155 [Adam Langley] 3156 3157 *) If a multithreaded client connects to a malicious server using a resumed 3158 session and the server sends an ec point format extension it could write 3159 up to 255 bytes to freed memory. 3160 3161 Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this 3162 issue. 3163 (CVE-2014-3509) 3164 [Gabor Tyukasz] 3165 3166 *) A malicious server can crash an OpenSSL client with a null pointer 3167 dereference (read) by specifying an SRP ciphersuite even though it was not 3168 properly negotiated with the client. This can be exploited through a 3169 Denial of Service attack. 3170 3171 Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for 3172 discovering and researching this issue. 3173 (CVE-2014-5139) 3174 [Steve Henson] 3175 3176 *) A flaw in OBJ_obj2txt may cause pretty printing functions such as 3177 X509_name_oneline, X509_name_print_ex et al. to leak some information 3178 from the stack. Applications may be affected if they echo pretty printing 3179 output to the attacker. 3180 3181 Thanks to Ivan Fratric (Google) for discovering this issue. 3182 (CVE-2014-3508) 3183 [Emilia Käsper, and Steve Henson] 3184 3185 *) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.) 3186 for corner cases. (Certain input points at infinity could lead to 3187 bogus results, with non-infinity inputs mapped to infinity too.) 3188 [Bodo Moeller] 3189 3190 Changes between 1.0.1g and 1.0.1h [5 Jun 2014] 3191 3192 *) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted 3193 handshake can force the use of weak keying material in OpenSSL 3194 SSL/TLS clients and servers. 3195 3196 Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and 3197 researching this issue. (CVE-2014-0224) 3198 [KIKUCHI Masashi, Steve Henson] 3199 3200 *) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an 3201 OpenSSL DTLS client the code can be made to recurse eventually crashing 3202 in a DoS attack. 3203 3204 Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue. 3205 (CVE-2014-0221) 3206 [Imre Rad, Steve Henson] 3207 3208 *) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can 3209 be triggered by sending invalid DTLS fragments to an OpenSSL DTLS 3210 client or server. This is potentially exploitable to run arbitrary 3211 code on a vulnerable client or server. 3212 3213 Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195) 3214 [Jüri Aedla, Steve Henson] 3215 3216 *) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites 3217 are subject to a denial of service attack. 3218 3219 Thanks to Felix Gröbert and Ivan Fratric at Google for discovering 3220 this issue. (CVE-2014-3470) 3221 [Felix Gröbert, Ivan Fratric, Steve Henson] 3222 3223 *) Harmonize version and its documentation. -f flag is used to display 3224 compilation flags. 3225 [mancha <mancha1@zoho.com>] 3226 3227 *) Fix eckey_priv_encode so it immediately returns an error upon a failure 3228 in i2d_ECPrivateKey. 3229 [mancha <mancha1@zoho.com>] 3230 3231 *) Fix some double frees. These are not thought to be exploitable. 3232 [mancha <mancha1@zoho.com>] 3233 3234 Changes between 1.0.1f and 1.0.1g [7 Apr 2014] 3235 3236 *) A missing bounds check in the handling of the TLS heartbeat extension 3237 can be used to reveal up to 64k of memory to a connected client or 3238 server. 3239 3240 Thanks for Neel Mehta of Google Security for discovering this bug and to 3241 Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for 3242 preparing the fix (CVE-2014-0160) 3243 [Adam Langley, Bodo Moeller] 3244 3245 *) Fix for the attack described in the paper "Recovering OpenSSL 3246 ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack" 3247 by Yuval Yarom and Naomi Benger. Details can be obtained from: 3248 http://eprint.iacr.org/2014/140 3249 3250 Thanks to Yuval Yarom and Naomi Benger for discovering this 3251 flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076) 3252 [Yuval Yarom and Naomi Benger] 3253 3254 *) TLS pad extension: draft-agl-tls-padding-03 3255 3256 Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the 3257 TLS client Hello record length value would otherwise be > 255 and 3258 less that 512 pad with a dummy extension containing zeroes so it 3259 is at least 512 bytes long. 3260 3261 [Adam Langley, Steve Henson] 3262 3263 Changes between 1.0.1e and 1.0.1f [6 Jan 2014] 3264 3265 *) Fix for TLS record tampering bug. A carefully crafted invalid 3266 handshake could crash OpenSSL with a NULL pointer exception. 3267 Thanks to Anton Johansson for reporting this issues. 3268 (CVE-2013-4353) 3269 3270 *) Keep original DTLS digest and encryption contexts in retransmission 3271 structures so we can use the previous session parameters if they need 3272 to be resent. (CVE-2013-6450) 3273 [Steve Henson] 3274 3275 *) Add option SSL_OP_SAFARI_ECDHE_ECDSA_BUG (part of SSL_OP_ALL) which 3276 avoids preferring ECDHE-ECDSA ciphers when the client appears to be 3277 Safari on OS X. Safari on OS X 10.8..10.8.3 advertises support for 3278 several ECDHE-ECDSA ciphers, but fails to negotiate them. The bug 3279 is fixed in OS X 10.8.4, but Apple have ruled out both hot fixing 3280 10.8..10.8.3 and forcing users to upgrade to 10.8.4 or newer. 3281 [Rob Stradling, Adam Langley] 3282 3283 Changes between 1.0.1d and 1.0.1e [11 Feb 2013] 3284 3285 *) Correct fix for CVE-2013-0169. The original didn't work on AES-NI 3286 supporting platforms or when small records were transferred. 3287 [Andy Polyakov, Steve Henson] 3288 3289 Changes between 1.0.1c and 1.0.1d [5 Feb 2013] 3290 3291 *) Make the decoding of SSLv3, TLS and DTLS CBC records constant time. 3292 3293 This addresses the flaw in CBC record processing discovered by 3294 Nadhem Alfardan and Kenny Paterson. Details of this attack can be found 3295 at: http://www.isg.rhul.ac.uk/tls/ 3296 3297 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 3298 Security Group at Royal Holloway, University of London 3299 (www.isg.rhul.ac.uk) for discovering this flaw and Adam Langley and 3300 Emilia Käsper for the initial patch. 3301 (CVE-2013-0169) 3302 [Emilia Käsper, Adam Langley, Ben Laurie, Andy Polyakov, Steve Henson] 3303 3304 *) Fix flaw in AESNI handling of TLS 1.2 and 1.1 records for CBC mode 3305 ciphersuites which can be exploited in a denial of service attack. 3306 Thanks go to and to Adam Langley <agl@chromium.org> for discovering 3307 and detecting this bug and to Wolfgang Ettlinger 3308 <wolfgang.ettlinger@gmail.com> for independently discovering this issue. 3309 (CVE-2012-2686) 3310 [Adam Langley] 3311 3312 *) Return an error when checking OCSP signatures when key is NULL. 3313 This fixes a DoS attack. (CVE-2013-0166) 3314 [Steve Henson] 3315 3316 *) Make openssl verify return errors. 3317 [Chris Palmer <palmer@google.com> and Ben Laurie] 3318 3319 *) Call OCSP Stapling callback after ciphersuite has been chosen, so 3320 the right response is stapled. Also change SSL_get_certificate() 3321 so it returns the certificate actually sent. 3322 See http://rt.openssl.org/Ticket/Display.html?id=2836. 3323 [Rob Stradling <rob.stradling@comodo.com>] 3324 3325 *) Fix possible deadlock when decoding public keys. 3326 [Steve Henson] 3327 3328 *) Don't use TLS 1.0 record version number in initial client hello 3329 if renegotiating. 3330 [Steve Henson] 3331 3332 Changes between 1.0.1b and 1.0.1c [10 May 2012] 3333 3334 *) Sanity check record length before skipping explicit IV in TLS 3335 1.2, 1.1 and DTLS to fix DoS attack. 3336 3337 Thanks to Codenomicon for discovering this issue using Fuzz-o-Matic 3338 fuzzing as a service testing platform. 3339 (CVE-2012-2333) 3340 [Steve Henson] 3341 3342 *) Initialise tkeylen properly when encrypting CMS messages. 3343 Thanks to Solar Designer of Openwall for reporting this issue. 3344 [Steve Henson] 3345 3346 *) In FIPS mode don't try to use composite ciphers as they are not 3347 approved. 3348 [Steve Henson] 3349 3350 Changes between 1.0.1a and 1.0.1b [26 Apr 2012] 3351 3352 *) OpenSSL 1.0.0 sets SSL_OP_ALL to 0x80000FFFL and OpenSSL 1.0.1 and 3353 1.0.1a set SSL_OP_NO_TLSv1_1 to 0x00000400L which would unfortunately 3354 mean any application compiled against OpenSSL 1.0.0 headers setting 3355 SSL_OP_ALL would also set SSL_OP_NO_TLSv1_1, unintentionally disabling 3356 TLS 1.1 also. Fix this by changing the value of SSL_OP_NO_TLSv1_1 to 3357 0x10000000L Any application which was previously compiled against 3358 OpenSSL 1.0.1 or 1.0.1a headers and which cares about SSL_OP_NO_TLSv1_1 3359 will need to be recompiled as a result. Letting be results in 3360 inability to disable specifically TLS 1.1 and in client context, 3361 in unlike event, limit maximum offered version to TLS 1.0 [see below]. 3362 [Steve Henson] 3363 3364 *) In order to ensure interoperability SSL_OP_NO_protocolX does not 3365 disable just protocol X, but all protocols above X *if* there are 3366 protocols *below* X still enabled. In more practical terms it means 3367 that if application wants to disable TLS1.0 in favor of TLS1.1 and 3368 above, it's not sufficient to pass SSL_OP_NO_TLSv1, one has to pass 3369 SSL_OP_NO_TLSv1|SSL_OP_NO_SSLv3|SSL_OP_NO_SSLv2. This applies to 3370 client side. 3371 [Andy Polyakov] 3372 3373 Changes between 1.0.1 and 1.0.1a [19 Apr 2012] 3374 3375 *) Check for potentially exploitable overflows in asn1_d2i_read_bio 3376 BUF_mem_grow and BUF_mem_grow_clean. Refuse attempts to shrink buffer 3377 in CRYPTO_realloc_clean. 3378 3379 Thanks to Tavis Ormandy, Google Security Team, for discovering this 3380 issue and to Adam Langley <agl@chromium.org> for fixing it. 3381 (CVE-2012-2110) 3382 [Adam Langley (Google), Tavis Ormandy, Google Security Team] 3383 3384 *) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections. 3385 [Adam Langley] 3386 3387 *) Workarounds for some broken servers that "hang" if a client hello 3388 record length exceeds 255 bytes. 3389 3390 1. Do not use record version number > TLS 1.0 in initial client 3391 hello: some (but not all) hanging servers will now work. 3392 2. If we set OPENSSL_MAX_TLS1_2_CIPHER_LENGTH this will truncate 3393 the number of ciphers sent in the client hello. This should be 3394 set to an even number, such as 50, for example by passing: 3395 -DOPENSSL_MAX_TLS1_2_CIPHER_LENGTH=50 to config or Configure. 3396 Most broken servers should now work. 3397 3. If all else fails setting OPENSSL_NO_TLS1_2_CLIENT will disable 3398 TLS 1.2 client support entirely. 3399 [Steve Henson] 3400 3401 *) Fix SEGV in Vector Permutation AES module observed in OpenSSH. 3402 [Andy Polyakov] 3403 3404 Changes between 1.0.0h and 1.0.1 [14 Mar 2012] 3405 3406 *) Add compatibility with old MDC2 signatures which use an ASN1 OCTET 3407 STRING form instead of a DigestInfo. 3408 [Steve Henson] 3409 3410 *) The format used for MDC2 RSA signatures is inconsistent between EVP 3411 and the RSA_sign/RSA_verify functions. This was made more apparent when 3412 OpenSSL used RSA_sign/RSA_verify for some RSA signatures in particular 3413 those which went through EVP_PKEY_METHOD in 1.0.0 and later. Detect 3414 the correct format in RSA_verify so both forms transparently work. 3415 [Steve Henson] 3416 3417 *) Some servers which support TLS 1.0 can choke if we initially indicate 3418 support for TLS 1.2 and later renegotiate using TLS 1.0 in the RSA 3419 encrypted premaster secret. As a workaround use the maximum permitted 3420 client version in client hello, this should keep such servers happy 3421 and still work with previous versions of OpenSSL. 3422 [Steve Henson] 3423 3424 *) Add support for TLS/DTLS heartbeats. 3425 [Robin Seggelmann <seggelmann@fh-muenster.de>] 3426 3427 *) Add support for SCTP. 3428 [Robin Seggelmann <seggelmann@fh-muenster.de>] 3429 3430 *) Improved PRNG seeding for VOS. 3431 [Paul Green <Paul.Green@stratus.com>] 3432 3433 *) Extensive assembler packs updates, most notably: 3434 3435 - x86[_64]: AES-NI, PCLMULQDQ, RDRAND support; 3436 - x86[_64]: SSSE3 support (SHA1, vector-permutation AES); 3437 - x86_64: bit-sliced AES implementation; 3438 - ARM: NEON support, contemporary platforms optimizations; 3439 - s390x: z196 support; 3440 - *: GHASH and GF(2^m) multiplication implementations; 3441 3442 [Andy Polyakov] 3443 3444 *) Make TLS-SRP code conformant with RFC 5054 API cleanup 3445 (removal of unnecessary code) 3446 [Peter Sylvester <peter.sylvester@edelweb.fr>] 3447 3448 *) Add TLS key material exporter from RFC 5705. 3449 [Eric Rescorla] 3450 3451 *) Add DTLS-SRTP negotiation from RFC 5764. 3452 [Eric Rescorla] 3453 3454 *) Add Next Protocol Negotiation, 3455 http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be 3456 disabled with a no-npn flag to config or Configure. Code donated 3457 by Google. 3458 [Adam Langley <agl@google.com> and Ben Laurie] 3459 3460 *) Add optional 64-bit optimized implementations of elliptic curves NIST-P224, 3461 NIST-P256, NIST-P521, with constant-time single point multiplication on 3462 typical inputs. Compiler support for the nonstandard type __uint128_t is 3463 required to use this (present in gcc 4.4 and later, for 64-bit builds). 3464 Code made available under Apache License version 2.0. 3465 3466 Specify "enable-ec_nistp_64_gcc_128" on the Configure (or config) command 3467 line to include this in your build of OpenSSL, and run "make depend" (or 3468 "make update"). This enables the following EC_METHODs: 3469 3470 EC_GFp_nistp224_method() 3471 EC_GFp_nistp256_method() 3472 EC_GFp_nistp521_method() 3473 3474 EC_GROUP_new_by_curve_name() will automatically use these (while 3475 EC_GROUP_new_curve_GFp() currently prefers the more flexible 3476 implementations). 3477 [Emilia Käsper, Adam Langley, Bodo Moeller (Google)] 3478 3479 *) Use type ossl_ssize_t instad of ssize_t which isn't available on 3480 all platforms. Move ssize_t definition from e_os.h to the public 3481 header file e_os2.h as it now appears in public header file cms.h 3482 [Steve Henson] 3483 3484 *) New -sigopt option to the ca, req and x509 utilities. Additional 3485 signature parameters can be passed using this option and in 3486 particular PSS. 3487 [Steve Henson] 3488 3489 *) Add RSA PSS signing function. This will generate and set the 3490 appropriate AlgorithmIdentifiers for PSS based on those in the 3491 corresponding EVP_MD_CTX structure. No application support yet. 3492 [Steve Henson] 3493 3494 *) Support for companion algorithm specific ASN1 signing routines. 3495 New function ASN1_item_sign_ctx() signs a pre-initialised 3496 EVP_MD_CTX structure and sets AlgorithmIdentifiers based on 3497 the appropriate parameters. 3498 [Steve Henson] 3499 3500 *) Add new algorithm specific ASN1 verification initialisation function 3501 to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1 3502 handling will be the same no matter what EVP_PKEY_METHOD is used. 3503 Add a PSS handler to support verification of PSS signatures: checked 3504 against a number of sample certificates. 3505 [Steve Henson] 3506 3507 *) Add signature printing for PSS. Add PSS OIDs. 3508 [Steve Henson, Martin Kaiser <lists@kaiser.cx>] 3509 3510 *) Add algorithm specific signature printing. An individual ASN1 method 3511 can now print out signatures instead of the standard hex dump. 3512 3513 More complex signatures (e.g. PSS) can print out more meaningful 3514 information. Include DSA version that prints out the signature 3515 parameters r, s. 3516 [Steve Henson] 3517 3518 *) Password based recipient info support for CMS library: implementing 3519 RFC3211. 3520 [Steve Henson] 3521 3522 *) Split password based encryption into PBES2 and PBKDF2 functions. This 3523 neatly separates the code into cipher and PBE sections and is required 3524 for some algorithms that split PBES2 into separate pieces (such as 3525 password based CMS). 3526 [Steve Henson] 3527 3528 *) Session-handling fixes: 3529 - Fix handling of connections that are resuming with a session ID, 3530 but also support Session Tickets. 3531 - Fix a bug that suppressed issuing of a new ticket if the client 3532 presented a ticket with an expired session. 3533 - Try to set the ticket lifetime hint to something reasonable. 3534 - Make tickets shorter by excluding irrelevant information. 3535 - On the client side, don't ignore renewed tickets. 3536 [Adam Langley, Bodo Moeller (Google)] 3537 3538 *) Fix PSK session representation. 3539 [Bodo Moeller] 3540 3541 *) Add RC4-MD5 and AESNI-SHA1 "stitched" implementations. 3542 3543 This work was sponsored by Intel. 3544 [Andy Polyakov] 3545 3546 *) Add GCM support to TLS library. Some custom code is needed to split 3547 the IV between the fixed (from PRF) and explicit (from TLS record) 3548 portions. This adds all GCM ciphersuites supported by RFC5288 and 3549 RFC5289. Generalise some AES* cipherstrings to include GCM and 3550 add a special AESGCM string for GCM only. 3551 [Steve Henson] 3552 3553 *) Expand range of ctrls for AES GCM. Permit setting invocation 3554 field on decrypt and retrieval of invocation field only on encrypt. 3555 [Steve Henson] 3556 3557 *) Add HMAC ECC ciphersuites from RFC5289. Include SHA384 PRF support. 3558 As required by RFC5289 these ciphersuites cannot be used if for 3559 versions of TLS earlier than 1.2. 3560 [Steve Henson] 3561 3562 *) For FIPS capable OpenSSL interpret a NULL default public key method 3563 as unset and return the appropriate default but do *not* set the default. 3564 This means we can return the appropriate method in applications that 3565 switch between FIPS and non-FIPS modes. 3566 [Steve Henson] 3567 3568 *) Redirect HMAC and CMAC operations to FIPS module in FIPS mode. If an 3569 ENGINE is used then we cannot handle that in the FIPS module so we 3570 keep original code iff non-FIPS operations are allowed. 3571 [Steve Henson] 3572 3573 *) Add -attime option to openssl utilities. 3574 [Peter Eckersley <pde@eff.org>, Ben Laurie and Steve Henson] 3575 3576 *) Redirect DSA and DH operations to FIPS module in FIPS mode. 3577 [Steve Henson] 3578 3579 *) Redirect ECDSA and ECDH operations to FIPS module in FIPS mode. Also use 3580 FIPS EC methods unconditionally for now. 3581 [Steve Henson] 3582 3583 *) New build option no-ec2m to disable characteristic 2 code. 3584 [Steve Henson] 3585 3586 *) Backport libcrypto audit of return value checking from 1.1.0-dev; not 3587 all cases can be covered as some introduce binary incompatibilities. 3588 [Steve Henson] 3589 3590 *) Redirect RSA operations to FIPS module including keygen, 3591 encrypt, decrypt, sign and verify. Block use of non FIPS RSA methods. 3592 [Steve Henson] 3593 3594 *) Add similar low level API blocking to ciphers. 3595 [Steve Henson] 3596 3597 *) Low level digest APIs are not approved in FIPS mode: any attempt 3598 to use these will cause a fatal error. Applications that *really* want 3599 to use them can use the private_* version instead. 3600 [Steve Henson] 3601 3602 *) Redirect cipher operations to FIPS module for FIPS builds. 3603 [Steve Henson] 3604 3605 *) Redirect digest operations to FIPS module for FIPS builds. 3606 [Steve Henson] 3607 3608 *) Update build system to add "fips" flag which will link in fipscanister.o 3609 for static and shared library builds embedding a signature if needed. 3610 [Steve Henson] 3611 3612 *) Output TLS supported curves in preference order instead of numerical 3613 order. This is currently hardcoded for the highest order curves first. 3614 This should be configurable so applications can judge speed vs strength. 3615 [Steve Henson] 3616 3617 *) Add TLS v1.2 server support for client authentication. 3618 [Steve Henson] 3619 3620 *) Add support for FIPS mode in ssl library: disable SSLv3, non-FIPS ciphers 3621 and enable MD5. 3622 [Steve Henson] 3623 3624 *) Functions FIPS_mode_set() and FIPS_mode() which call the underlying 3625 FIPS modules versions. 3626 [Steve Henson] 3627 3628 *) Add TLS v1.2 client side support for client authentication. Keep cache 3629 of handshake records longer as we don't know the hash algorithm to use 3630 until after the certificate request message is received. 3631 [Steve Henson] 3632 3633 *) Initial TLS v1.2 client support. Add a default signature algorithms 3634 extension including all the algorithms we support. Parse new signature 3635 format in client key exchange. Relax some ECC signing restrictions for 3636 TLS v1.2 as indicated in RFC5246. 3637 [Steve Henson] 3638 3639 *) Add server support for TLS v1.2 signature algorithms extension. Switch 3640 to new signature format when needed using client digest preference. 3641 All server ciphersuites should now work correctly in TLS v1.2. No client 3642 support yet and no support for client certificates. 3643 [Steve Henson] 3644 3645 *) Initial TLS v1.2 support. Add new SHA256 digest to ssl code, switch 3646 to SHA256 for PRF when using TLS v1.2 and later. Add new SHA256 based 3647 ciphersuites. At present only RSA key exchange ciphersuites work with 3648 TLS v1.2. Add new option for TLS v1.2 replacing the old and obsolete 3649 SSL_OP_PKCS1_CHECK flags with SSL_OP_NO_TLSv1_2. New TLSv1.2 methods 3650 and version checking. 3651 [Steve Henson] 3652 3653 *) New option OPENSSL_NO_SSL_INTERN. If an application can be compiled 3654 with this defined it will not be affected by any changes to ssl internal 3655 structures. Add several utility functions to allow openssl application 3656 to work with OPENSSL_NO_SSL_INTERN defined. 3657 [Steve Henson] 3658 3659 *) A long standing patch to add support for SRP from EdelWeb (Peter 3660 Sylvester and Christophe Renou) was integrated. 3661 [Christophe Renou <christophe.renou@edelweb.fr>, Peter Sylvester 3662 <peter.sylvester@edelweb.fr>, Tom Wu <tjw@cs.stanford.edu>, and 3663 Ben Laurie] 3664 3665 *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id. 3666 [Steve Henson] 3667 3668 *) Permit abbreviated handshakes when renegotiating using the function 3669 SSL_renegotiate_abbreviated(). 3670 [Robin Seggelmann <seggelmann@fh-muenster.de>] 3671 3672 *) Add call to ENGINE_register_all_complete() to 3673 ENGINE_load_builtin_engines(), so some implementations get used 3674 automatically instead of needing explicit application support. 3675 [Steve Henson] 3676 3677 *) Add support for TLS key exporter as described in RFC5705. 3678 [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson] 3679 3680 *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only 3681 a few changes are required: 3682 3683 Add SSL_OP_NO_TLSv1_1 flag. 3684 Add TLSv1_1 methods. 3685 Update version checking logic to handle version 1.1. 3686 Add explicit IV handling (ported from DTLS code). 3687 Add command line options to s_client/s_server. 3688 [Steve Henson] 3689 3690 Changes between 1.0.0g and 1.0.0h [12 Mar 2012] 3691 3692 *) Fix MMA (Bleichenbacher's attack on PKCS #1 v1.5 RSA padding) weakness 3693 in CMS and PKCS7 code. When RSA decryption fails use a random key for 3694 content decryption and always return the same error. Note: this attack 3695 needs on average 2^20 messages so it only affects automated senders. The 3696 old behaviour can be re-enabled in the CMS code by setting the 3697 CMS_DEBUG_DECRYPT flag: this is useful for debugging and testing where 3698 an MMA defence is not necessary. 3699 Thanks to Ivan Nestlerode <inestlerode@us.ibm.com> for discovering 3700 this issue. (CVE-2012-0884) 3701 [Steve Henson] 3702 3703 *) Fix CVE-2011-4619: make sure we really are receiving a 3704 client hello before rejecting multiple SGC restarts. Thanks to 3705 Ivan Nestlerode <inestlerode@us.ibm.com> for discovering this bug. 3706 [Steve Henson] 3707 3708 Changes between 1.0.0f and 1.0.0g [18 Jan 2012] 3709 3710 *) Fix for DTLS DoS issue introduced by fix for CVE-2011-4109. 3711 Thanks to Antonio Martin, Enterprise Secure Access Research and 3712 Development, Cisco Systems, Inc. for discovering this bug and 3713 preparing a fix. (CVE-2012-0050) 3714 [Antonio Martin] 3715 3716 Changes between 1.0.0e and 1.0.0f [4 Jan 2012] 3717 3718 *) Nadhem Alfardan and Kenny Paterson have discovered an extension 3719 of the Vaudenay padding oracle attack on CBC mode encryption 3720 which enables an efficient plaintext recovery attack against 3721 the OpenSSL implementation of DTLS. Their attack exploits timing 3722 differences arising during decryption processing. A research 3723 paper describing this attack can be found at: 3724 http://www.isg.rhul.ac.uk/~kp/dtls.pdf 3725 Thanks go to Nadhem Alfardan and Kenny Paterson of the Information 3726 Security Group at Royal Holloway, University of London 3727 (www.isg.rhul.ac.uk) for discovering this flaw and to Robin Seggelmann 3728 <seggelmann@fh-muenster.de> and Michael Tuexen <tuexen@fh-muenster.de> 3729 for preparing the fix. (CVE-2011-4108) 3730 [Robin Seggelmann, Michael Tuexen] 3731 3732 *) Clear bytes used for block padding of SSL 3.0 records. 3733 (CVE-2011-4576) 3734 [Adam Langley (Google)] 3735 3736 *) Only allow one SGC handshake restart for SSL/TLS. Thanks to George 3737 Kadianakis <desnacked@gmail.com> for discovering this issue and 3738 Adam Langley for preparing the fix. (CVE-2011-4619) 3739 [Adam Langley (Google)] 3740 3741 *) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027) 3742 [Andrey Kulikov <amdeich@gmail.com>] 3743 3744 *) Prevent malformed RFC3779 data triggering an assertion failure. 3745 Thanks to Andrew Chi, BBN Technologies, for discovering the flaw 3746 and Rob Austein <sra@hactrn.net> for fixing it. (CVE-2011-4577) 3747 [Rob Austein <sra@hactrn.net>] 3748 3749 *) Improved PRNG seeding for VOS. 3750 [Paul Green <Paul.Green@stratus.com>] 3751 3752 *) Fix ssl_ciph.c set-up race. 3753 [Adam Langley (Google)] 3754 3755 *) Fix spurious failures in ecdsatest.c. 3756 [Emilia Käsper (Google)] 3757 3758 *) Fix the BIO_f_buffer() implementation (which was mixing different 3759 interpretations of the '..._len' fields). 3760 [Adam Langley (Google)] 3761 3762 *) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than 3763 BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent 3764 threads won't reuse the same blinding coefficients. 3765 3766 This also avoids the need to obtain the CRYPTO_LOCK_RSA_BLINDING 3767 lock to call BN_BLINDING_invert_ex, and avoids one use of 3768 BN_BLINDING_update for each BN_BLINDING structure (previously, 3769 the last update always remained unused). 3770 [Emilia Käsper (Google)] 3771 3772 *) In ssl3_clear, preserve s3->init_extra along with s3->rbuf. 3773 [Bob Buckholz (Google)] 3774 3775 Changes between 1.0.0d and 1.0.0e [6 Sep 2011] 3776 3777 *) Fix bug where CRLs with nextUpdate in the past are sometimes accepted 3778 by initialising X509_STORE_CTX properly. (CVE-2011-3207) 3779 [Kaspar Brand <ossl@velox.ch>] 3780 3781 *) Fix SSL memory handling for (EC)DH ciphersuites, in particular 3782 for multi-threaded use of ECDH. (CVE-2011-3210) 3783 [Adam Langley (Google)] 3784 3785 *) Fix x509_name_ex_d2i memory leak on bad inputs. 3786 [Bodo Moeller] 3787 3788 *) Remove hard coded ecdsaWithSHA1 signature tests in ssl code and check 3789 signature public key algorithm by using OID xref utilities instead. 3790 Before this you could only use some ECC ciphersuites with SHA1 only. 3791 [Steve Henson] 3792 3793 *) Add protection against ECDSA timing attacks as mentioned in the paper 3794 by Billy Bob Brumley and Nicola Tuveri, see: 3795 3796 http://eprint.iacr.org/2011/232.pdf 3797 3798 [Billy Bob Brumley and Nicola Tuveri] 3799 3800 Changes between 1.0.0c and 1.0.0d [8 Feb 2011] 3801 3802 *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014 3803 [Neel Mehta, Adam Langley, Bodo Moeller (Google)] 3804 3805 *) Fix bug in string printing code: if *any* escaping is enabled we must 3806 escape the escape character (backslash) or the resulting string is 3807 ambiguous. 3808 [Steve Henson] 3809 3810 Changes between 1.0.0b and 1.0.0c [2 Dec 2010] 3811 3812 *) Disable code workaround for ancient and obsolete Netscape browsers 3813 and servers: an attacker can use it in a ciphersuite downgrade attack. 3814 Thanks to Martin Rex for discovering this bug. CVE-2010-4180 3815 [Steve Henson] 3816 3817 *) Fixed J-PAKE implementation error, originally discovered by 3818 Sebastien Martini, further info and confirmation from Stefan 3819 Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252 3820 [Ben Laurie] 3821 3822 Changes between 1.0.0a and 1.0.0b [16 Nov 2010] 3823 3824 *) Fix extension code to avoid race conditions which can result in a buffer 3825 overrun vulnerability: resumed sessions must not be modified as they can 3826 be shared by multiple threads. CVE-2010-3864 3827 [Steve Henson] 3828 3829 *) Fix WIN32 build system to correctly link an ENGINE directory into 3830 a DLL. 3831 [Steve Henson] 3832 3833 Changes between 1.0.0 and 1.0.0a [01 Jun 2010] 3834 3835 *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover 3836 (CVE-2010-1633) 3837 [Steve Henson, Peter-Michael Hager <hager@dortmund.net>] 3838 3839 Changes between 0.9.8n and 1.0.0 [29 Mar 2010] 3840 3841 *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher 3842 context. The operation can be customised via the ctrl mechanism in 3843 case ENGINEs want to include additional functionality. 3844 [Steve Henson] 3845 3846 *) Tolerate yet another broken PKCS#8 key format: private key value negative. 3847 [Steve Henson] 3848 3849 *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to 3850 output hashes compatible with older versions of OpenSSL. 3851 [Willy Weisz <weisz@vcpc.univie.ac.at>] 3852 3853 *) Fix compression algorithm handling: if resuming a session use the 3854 compression algorithm of the resumed session instead of determining 3855 it from client hello again. Don't allow server to change algorithm. 3856 [Steve Henson] 3857 3858 *) Add load_crls() function to apps tidying load_certs() too. Add option 3859 to verify utility to allow additional CRLs to be included. 3860 [Steve Henson] 3861 3862 *) Update OCSP request code to permit adding custom headers to the request: 3863 some responders need this. 3864 [Steve Henson] 3865 3866 *) The function EVP_PKEY_sign() returns <=0 on error: check return code 3867 correctly. 3868 [Julia Lawall <julia@diku.dk>] 3869 3870 *) Update verify callback code in apps/s_cb.c and apps/verify.c, it 3871 needlessly dereferenced structures, used obsolete functions and 3872 didn't handle all updated verify codes correctly. 3873 [Steve Henson] 3874 3875 *) Disable MD2 in the default configuration. 3876 [Steve Henson] 3877 3878 *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to 3879 indicate the initial BIO being pushed or popped. This makes it possible 3880 to determine whether the BIO is the one explicitly called or as a result 3881 of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so 3882 it handles reference counts correctly and doesn't zero out the I/O bio 3883 when it is not being explicitly popped. WARNING: applications which 3884 included workarounds for the old buggy behaviour will need to be modified 3885 or they could free up already freed BIOs. 3886 [Steve Henson] 3887 3888 *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni 3889 renaming to all platforms (within the 0.9.8 branch, this was 3890 done conditionally on Netware platforms to avoid a name clash). 3891 [Guenter <lists@gknw.net>] 3892 3893 *) Add ECDHE and PSK support to DTLS. 3894 [Michael Tuexen <tuexen@fh-muenster.de>] 3895 3896 *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't 3897 be used on C++. 3898 [Steve Henson] 3899 3900 *) Add "missing" function EVP_MD_flags() (without this the only way to 3901 retrieve a digest flags is by accessing the structure directly. Update 3902 EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest 3903 or cipher is registered as in the "from" argument. Print out all 3904 registered digests in the dgst usage message instead of manually 3905 attempting to work them out. 3906 [Steve Henson] 3907 3908 *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello: 3909 this allows the use of compression and extensions. Change default cipher 3910 string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2 3911 by default unless an application cipher string requests it. 3912 [Steve Henson] 3913 3914 *) Alter match criteria in PKCS12_parse(). It used to try to use local 3915 key ids to find matching certificates and keys but some PKCS#12 files 3916 don't follow the (somewhat unwritten) rules and this strategy fails. 3917 Now just gather all certificates together and the first private key 3918 then look for the first certificate that matches the key. 3919 [Steve Henson] 3920 3921 *) Support use of registered digest and cipher names for dgst and cipher 3922 commands instead of having to add each one as a special case. So now 3923 you can do: 3924 3925 openssl sha256 foo 3926 3927 as well as: 3928 3929 openssl dgst -sha256 foo 3930 3931 and this works for ENGINE based algorithms too. 3932 3933 [Steve Henson] 3934 3935 *) Update Gost ENGINE to support parameter files. 3936 [Victor B. Wagner <vitus@cryptocom.ru>] 3937 3938 *) Support GeneralizedTime in ca utility. 3939 [Oliver Martin <oliver@volatilevoid.net>, Steve Henson] 3940 3941 *) Enhance the hash format used for certificate directory links. The new 3942 form uses the canonical encoding (meaning equivalent names will work 3943 even if they aren't identical) and uses SHA1 instead of MD5. This form 3944 is incompatible with the older format and as a result c_rehash should 3945 be used to rebuild symbolic links. 3946 [Steve Henson] 3947 3948 *) Make PKCS#8 the default write format for private keys, replacing the 3949 traditional format. This form is standardised, more secure and doesn't 3950 include an implicit MD5 dependency. 3951 [Steve Henson] 3952 3953 *) Add a $gcc_devteam_warn option to Configure. The idea is that any code 3954 committed to OpenSSL should pass this lot as a minimum. 3955 [Steve Henson] 3956 3957 *) Add session ticket override functionality for use by EAP-FAST. 3958 [Jouni Malinen <j@w1.fi>] 3959 3960 *) Modify HMAC functions to return a value. Since these can be implemented 3961 in an ENGINE errors can occur. 3962 [Steve Henson] 3963 3964 *) Type-checked OBJ_bsearch_ex. 3965 [Ben Laurie] 3966 3967 *) Type-checked OBJ_bsearch. Also some constification necessitated 3968 by type-checking. Still to come: TXT_DB, bsearch(?), 3969 OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING, 3970 CONF_VALUE. 3971 [Ben Laurie] 3972 3973 *) New function OPENSSL_gmtime_adj() to add a specific number of days and 3974 seconds to a tm structure directly, instead of going through OS 3975 specific date routines. This avoids any issues with OS routines such 3976 as the year 2038 bug. New *_adj() functions for ASN1 time structures 3977 and X509_time_adj_ex() to cover the extended range. The existing 3978 X509_time_adj() is still usable and will no longer have any date issues. 3979 [Steve Henson] 3980 3981 *) Delta CRL support. New use deltas option which will attempt to locate 3982 and search any appropriate delta CRLs available. 3983 3984 This work was sponsored by Google. 3985 [Steve Henson] 3986 3987 *) Support for CRLs partitioned by reason code. Reorganise CRL processing 3988 code and add additional score elements. Validate alternate CRL paths 3989 as part of the CRL checking and indicate a new error "CRL path validation 3990 error" in this case. Applications wanting additional details can use 3991 the verify callback and check the new "parent" field. If this is not 3992 NULL CRL path validation is taking place. Existing applications won't 3993 see this because it requires extended CRL support which is off by 3994 default. 3995 3996 This work was sponsored by Google. 3997 [Steve Henson] 3998 3999 *) Support for freshest CRL extension. 4000 4001 This work was sponsored by Google. 4002 [Steve Henson] 4003 4004 *) Initial indirect CRL support. Currently only supported in the CRLs 4005 passed directly and not via lookup. Process certificate issuer 4006 CRL entry extension and lookup CRL entries by bother issuer name 4007 and serial number. Check and process CRL issuer entry in IDP extension. 4008 4009 This work was sponsored by Google. 4010 [Steve Henson] 4011 4012 *) Add support for distinct certificate and CRL paths. The CRL issuer 4013 certificate is validated separately in this case. Only enabled if 4014 an extended CRL support flag is set: this flag will enable additional 4015 CRL functionality in future. 4016 4017 This work was sponsored by Google. 4018 [Steve Henson] 4019 4020 *) Add support for policy mappings extension. 4021 4022 This work was sponsored by Google. 4023 [Steve Henson] 4024 4025 *) Fixes to pathlength constraint, self issued certificate handling, 4026 policy processing to align with RFC3280 and PKITS tests. 4027 4028 This work was sponsored by Google. 4029 [Steve Henson] 4030 4031 *) Support for name constraints certificate extension. DN, email, DNS 4032 and URI types are currently supported. 4033 4034 This work was sponsored by Google. 4035 [Steve Henson] 4036 4037 *) To cater for systems that provide a pointer-based thread ID rather 4038 than numeric, deprecate the current numeric thread ID mechanism and 4039 replace it with a structure and associated callback type. This 4040 mechanism allows a numeric "hash" to be extracted from a thread ID in 4041 either case, and on platforms where pointers are larger than 'long', 4042 mixing is done to help ensure the numeric 'hash' is usable even if it 4043 can't be guaranteed unique. The default mechanism is to use "&errno" 4044 as a pointer-based thread ID to distinguish between threads. 4045 4046 Applications that want to provide their own thread IDs should now use 4047 CRYPTO_THREADID_set_callback() to register a callback that will call 4048 either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer(). 4049 4050 Note that ERR_remove_state() is now deprecated, because it is tied 4051 to the assumption that thread IDs are numeric. ERR_remove_state(0) 4052 to free the current thread's error state should be replaced by 4053 ERR_remove_thread_state(NULL). 4054 4055 (This new approach replaces the functions CRYPTO_set_idptr_callback(), 4056 CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in 4057 OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an 4058 application was previously providing a numeric thread callback that 4059 was inappropriate for distinguishing threads, then uniqueness might 4060 have been obtained with &errno that happened immediately in the 4061 intermediate development versions of OpenSSL; this is no longer the 4062 case, the numeric thread callback will now override the automatic use 4063 of &errno.) 4064 [Geoff Thorpe, with help from Bodo Moeller] 4065 4066 *) Initial support for different CRL issuing certificates. This covers a 4067 simple case where the self issued certificates in the chain exist and 4068 the real CRL issuer is higher in the existing chain. 4069 4070 This work was sponsored by Google. 4071 [Steve Henson] 4072 4073 *) Removed effectively defunct crypto/store from the build. 4074 [Ben Laurie] 4075 4076 *) Revamp of STACK to provide stronger type-checking. Still to come: 4077 TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE, 4078 ASN1_STRING, CONF_VALUE. 4079 [Ben Laurie] 4080 4081 *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer 4082 RAM on SSL connections. This option can save about 34k per idle SSL. 4083 [Nick Mathewson] 4084 4085 *) Revamp of LHASH to provide stronger type-checking. Still to come: 4086 STACK, TXT_DB, bsearch, qsort. 4087 [Ben Laurie] 4088 4089 *) Initial support for Cryptographic Message Syntax (aka CMS) based 4090 on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility, 4091 support for data, signedData, compressedData, digestedData and 4092 encryptedData, envelopedData types included. Scripts to check against 4093 RFC4134 examples draft and interop and consistency checks of many 4094 content types and variants. 4095 [Steve Henson] 4096 4097 *) Add options to enc utility to support use of zlib compression BIO. 4098 [Steve Henson] 4099 4100 *) Extend mk1mf to support importing of options and assembly language 4101 files from Configure script, currently only included in VC-WIN32. 4102 The assembly language rules can now optionally generate the source 4103 files from the associated perl scripts. 4104 [Steve Henson] 4105 4106 *) Implement remaining functionality needed to support GOST ciphersuites. 4107 Interop testing has been performed using CryptoPro implementations. 4108 [Victor B. Wagner <vitus@cryptocom.ru>] 4109 4110 *) s390x assembler pack. 4111 [Andy Polyakov] 4112 4113 *) ARMv4 assembler pack. ARMv4 refers to v4 and later ISA, not CPU 4114 "family." 4115 [Andy Polyakov] 4116 4117 *) Implement Opaque PRF Input TLS extension as specified in 4118 draft-rescorla-tls-opaque-prf-input-00.txt. Since this is not an 4119 official specification yet and no extension type assignment by 4120 IANA exists, this extension (for now) will have to be explicitly 4121 enabled when building OpenSSL by providing the extension number 4122 to use. For example, specify an option 4123 4124 -DTLSEXT_TYPE_opaque_prf_input=0x9527 4125 4126 to the "config" or "Configure" script to enable the extension, 4127 assuming extension number 0x9527 (which is a completely arbitrary 4128 and unofficial assignment based on the MD5 hash of the Internet 4129 Draft). Note that by doing so, you potentially lose 4130 interoperability with other TLS implementations since these might 4131 be using the same extension number for other purposes. 4132 4133 SSL_set_tlsext_opaque_prf_input(ssl, src, len) is used to set the 4134 opaque PRF input value to use in the handshake. This will create 4135 an internal copy of the length-'len' string at 'src', and will 4136 return non-zero for success. 4137 4138 To get more control and flexibility, provide a callback function 4139 by using 4140 4141 SSL_CTX_set_tlsext_opaque_prf_input_callback(ctx, cb) 4142 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg(ctx, arg) 4143 4144 where 4145 4146 int (*cb)(SSL *, void *peerinput, size_t len, void *arg); 4147 void *arg; 4148 4149 Callback function 'cb' will be called in handshakes, and is 4150 expected to use SSL_set_tlsext_opaque_prf_input() as appropriate. 4151 Argument 'arg' is for application purposes (the value as given to 4152 SSL_CTX_set_tlsext_opaque_prf_input_callback_arg() will directly 4153 be provided to the callback function). The callback function 4154 has to return non-zero to report success: usually 1 to use opaque 4155 PRF input just if possible, or 2 to enforce use of the opaque PRF 4156 input. In the latter case, the library will abort the handshake 4157 if opaque PRF input is not successfully negotiated. 4158 4159 Arguments 'peerinput' and 'len' given to the callback function 4160 will always be NULL and 0 in the case of a client. A server will 4161 see the client's opaque PRF input through these variables if 4162 available (NULL and 0 otherwise). Note that if the server 4163 provides an opaque PRF input, the length must be the same as the 4164 length of the client's opaque PRF input. 4165 4166 Note that the callback function will only be called when creating 4167 a new session (session resumption can resume whatever was 4168 previously negotiated), and will not be called in SSL 2.0 4169 handshakes; thus, SSL_CTX_set_options(ctx, SSL_OP_NO_SSLv2) or 4170 SSL_set_options(ssl, SSL_OP_NO_SSLv2) is especially recommended 4171 for applications that need to enforce opaque PRF input. 4172 4173 [Bodo Moeller] 4174 4175 *) Update ssl code to support digests other than SHA1+MD5 for handshake 4176 MAC. 4177 4178 [Victor B. Wagner <vitus@cryptocom.ru>] 4179 4180 *) Add RFC4507 support to OpenSSL. This includes the corrections in 4181 RFC4507bis. The encrypted ticket format is an encrypted encoded 4182 SSL_SESSION structure, that way new session features are automatically 4183 supported. 4184 4185 If a client application caches session in an SSL_SESSION structure 4186 support is transparent because tickets are now stored in the encoded 4187 SSL_SESSION. 4188 4189 The SSL_CTX structure automatically generates keys for ticket 4190 protection in servers so again support should be possible 4191 with no application modification. 4192 4193 If a client or server wishes to disable RFC4507 support then the option 4194 SSL_OP_NO_TICKET can be set. 4195 4196 Add a TLS extension debugging callback to allow the contents of any client 4197 or server extensions to be examined. 4198 4199 This work was sponsored by Google. 4200 [Steve Henson] 4201 4202 *) Final changes to avoid use of pointer pointer casts in OpenSSL. 4203 OpenSSL should now compile cleanly on gcc 4.2 4204 [Peter Hartley <pdh@utter.chaos.org.uk>, Steve Henson] 4205 4206 *) Update SSL library to use new EVP_PKEY MAC API. Include generic MAC 4207 support including streaming MAC support: this is required for GOST 4208 ciphersuite support. 4209 [Victor B. Wagner <vitus@cryptocom.ru>, Steve Henson] 4210 4211 *) Add option -stream to use PKCS#7 streaming in smime utility. New 4212 function i2d_PKCS7_bio_stream() and PEM_write_PKCS7_bio_stream() 4213 to output in BER and PEM format. 4214 [Steve Henson] 4215 4216 *) Experimental support for use of HMAC via EVP_PKEY interface. This 4217 allows HMAC to be handled via the EVP_DigestSign*() interface. The 4218 EVP_PKEY "key" in this case is the HMAC key, potentially allowing 4219 ENGINE support for HMAC keys which are unextractable. New -mac and 4220 -macopt options to dgst utility. 4221 [Steve Henson] 4222 4223 *) New option -sigopt to dgst utility. Update dgst to use 4224 EVP_Digest{Sign,Verify}*. These two changes make it possible to use 4225 alternative signing parameters such as X9.31 or PSS in the dgst 4226 utility. 4227 [Steve Henson] 4228 4229 *) Change ssl_cipher_apply_rule(), the internal function that does 4230 the work each time a ciphersuite string requests enabling 4231 ("foo+bar"), moving ("+foo+bar"), disabling ("-foo+bar", or 4232 removing ("!foo+bar") a class of ciphersuites: Now it maintains 4233 the order of disabled ciphersuites such that those ciphersuites 4234 that most recently went from enabled to disabled not only stay 4235 in order with respect to each other, but also have higher priority 4236 than other disabled ciphersuites the next time ciphersuites are 4237 enabled again. 4238 4239 This means that you can now say, e.g., "PSK:-PSK:HIGH" to enable 4240 the same ciphersuites as with "HIGH" alone, but in a specific 4241 order where the PSK ciphersuites come first (since they are the 4242 most recently disabled ciphersuites when "HIGH" is parsed). 4243 4244 Also, change ssl_create_cipher_list() (using this new 4245 functionality) such that between otherwise identical 4246 ciphersuites, ephemeral ECDH is preferred over ephemeral DH in 4247 the default order. 4248 [Bodo Moeller] 4249 4250 *) Change ssl_create_cipher_list() so that it automatically 4251 arranges the ciphersuites in reasonable order before starting 4252 to process the rule string. Thus, the definition for "DEFAULT" 4253 (SSL_DEFAULT_CIPHER_LIST) now is just "ALL:!aNULL:!eNULL", but 4254 remains equivalent to "AES:ALL:!aNULL:!eNULL:+aECDH:+kRSA:+RC4:@STRENGTH". 4255 This makes it much easier to arrive at a reasonable default order 4256 in applications for which anonymous ciphers are OK (meaning 4257 that you can't actually use DEFAULT). 4258 [Bodo Moeller; suggested by Victor Duchovni] 4259 4260 *) Split the SSL/TLS algorithm mask (as used for ciphersuite string 4261 processing) into multiple integers instead of setting 4262 "SSL_MKEY_MASK" bits, "SSL_AUTH_MASK" bits, "SSL_ENC_MASK", 4263 "SSL_MAC_MASK", and "SSL_SSL_MASK" bits all in a single integer. 4264 (These masks as well as the individual bit definitions are hidden 4265 away into the non-exported interface ssl/ssl_locl.h, so this 4266 change to the definition of the SSL_CIPHER structure shouldn't 4267 affect applications.) This give us more bits for each of these 4268 categories, so there is no longer a need to coagulate AES128 and 4269 AES256 into a single algorithm bit, and to coagulate Camellia128 4270 and Camellia256 into a single algorithm bit, which has led to all 4271 kinds of kludges. 4272 4273 Thus, among other things, the kludge introduced in 0.9.7m and 4274 0.9.8e for masking out AES256 independently of AES128 or masking 4275 out Camellia256 independently of AES256 is not needed here in 0.9.9. 4276 4277 With the change, we also introduce new ciphersuite aliases that 4278 so far were missing: "AES128", "AES256", "CAMELLIA128", and 4279 "CAMELLIA256". 4280 [Bodo Moeller] 4281 4282 *) Add support for dsa-with-SHA224 and dsa-with-SHA256. 4283 Use the leftmost N bytes of the signature input if the input is 4284 larger than the prime q (with N being the size in bytes of q). 4285 [Nils Larsch] 4286 4287 *) Very *very* experimental PKCS#7 streaming encoder support. Nothing uses 4288 it yet and it is largely untested. 4289 [Steve Henson] 4290 4291 *) Add support for the ecdsa-with-SHA224/256/384/512 signature types. 4292 [Nils Larsch] 4293 4294 *) Initial incomplete changes to avoid need for function casts in OpenSSL 4295 some compilers (gcc 4.2 and later) reject their use. Safestack is 4296 reimplemented. Update ASN1 to avoid use of legacy functions. 4297 [Steve Henson] 4298 4299 *) Win32/64 targets are linked with Winsock2. 4300 [Andy Polyakov] 4301 4302 *) Add an X509_CRL_METHOD structure to allow CRL processing to be redirected 4303 to external functions. This can be used to increase CRL handling 4304 efficiency especially when CRLs are very large by (for example) storing 4305 the CRL revoked certificates in a database. 4306 [Steve Henson] 4307 4308 *) Overhaul of by_dir code. Add support for dynamic loading of CRLs so 4309 new CRLs added to a directory can be used. New command line option 4310 -verify_return_error to s_client and s_server. This causes real errors 4311 to be returned by the verify callback instead of carrying on no matter 4312 what. This reflects the way a "real world" verify callback would behave. 4313 [Steve Henson] 4314 4315 *) GOST engine, supporting several GOST algorithms and public key formats. 4316 Kindly donated by Cryptocom. 4317 [Cryptocom] 4318 4319 *) Partial support for Issuing Distribution Point CRL extension. CRLs 4320 partitioned by DP are handled but no indirect CRL or reason partitioning 4321 (yet). Complete overhaul of CRL handling: now the most suitable CRL is 4322 selected via a scoring technique which handles IDP and AKID in CRLs. 4323 [Steve Henson] 4324 4325 *) New X509_STORE_CTX callbacks lookup_crls() and lookup_certs() which 4326 will ultimately be used for all verify operations: this will remove the 4327 X509_STORE dependency on certificate verification and allow alternative 4328 lookup methods. X509_STORE based implementations of these two callbacks. 4329 [Steve Henson] 4330 4331 *) Allow multiple CRLs to exist in an X509_STORE with matching issuer names. 4332 Modify get_crl() to find a valid (unexpired) CRL if possible. 4333 [Steve Henson] 4334 4335 *) New function X509_CRL_match() to check if two CRLs are identical. Normally 4336 this would be called X509_CRL_cmp() but that name is already used by 4337 a function that just compares CRL issuer names. Cache several CRL 4338 extensions in X509_CRL structure and cache CRLDP in X509. 4339 [Steve Henson] 4340 4341 *) Store a "canonical" representation of X509_NAME structure (ASN1 Name) 4342 this maps equivalent X509_NAME structures into a consistent structure. 4343 Name comparison can then be performed rapidly using memcmp(). 4344 [Steve Henson] 4345 4346 *) Non-blocking OCSP request processing. Add -timeout option to ocsp 4347 utility. 4348 [Steve Henson] 4349 4350 *) Allow digests to supply their own micalg string for S/MIME type using 4351 the ctrl EVP_MD_CTRL_MICALG. 4352 [Steve Henson] 4353 4354 *) During PKCS7 signing pass the PKCS7 SignerInfo structure to the 4355 EVP_PKEY_METHOD before and after signing via the EVP_PKEY_CTRL_PKCS7_SIGN 4356 ctrl. It can then customise the structure before and/or after signing 4357 if necessary. 4358 [Steve Henson] 4359 4360 *) New function OBJ_add_sigid() to allow application defined signature OIDs 4361 to be added to OpenSSLs internal tables. New function OBJ_sigid_free() 4362 to free up any added signature OIDs. 4363 [Steve Henson] 4364 4365 *) New functions EVP_CIPHER_do_all(), EVP_CIPHER_do_all_sorted(), 4366 EVP_MD_do_all() and EVP_MD_do_all_sorted() to enumerate internal 4367 digest and cipher tables. New options added to openssl utility: 4368 list-message-digest-algorithms and list-cipher-algorithms. 4369 [Steve Henson] 4370 4371 *) Change the array representation of binary polynomials: the list 4372 of degrees of non-zero coefficients is now terminated with -1. 4373 Previously it was terminated with 0, which was also part of the 4374 value; thus, the array representation was not applicable to 4375 polynomials where t^0 has coefficient zero. This change makes 4376 the array representation useful in a more general context. 4377 [Douglas Stebila] 4378 4379 *) Various modifications and fixes to SSL/TLS cipher string 4380 handling. For ECC, the code now distinguishes between fixed ECDH 4381 with RSA certificates on the one hand and with ECDSA certificates 4382 on the other hand, since these are separate ciphersuites. The 4383 unused code for Fortezza ciphersuites has been removed. 4384 4385 For consistency with EDH, ephemeral ECDH is now called "EECDH" 4386 (not "ECDHE"). For consistency with the code for DH 4387 certificates, use of ECDH certificates is now considered ECDH 4388 authentication, not RSA or ECDSA authentication (the latter is 4389 merely the CA's signing algorithm and not actively used in the 4390 protocol). 4391 4392 The temporary ciphersuite alias "ECCdraft" is no longer 4393 available, and ECC ciphersuites are no longer excluded from "ALL" 4394 and "DEFAULT". The following aliases now exist for RFC 4492 4395 ciphersuites, most of these by analogy with the DH case: 4396 4397 kECDHr - ECDH cert, signed with RSA 4398 kECDHe - ECDH cert, signed with ECDSA 4399 kECDH - ECDH cert (signed with either RSA or ECDSA) 4400 kEECDH - ephemeral ECDH 4401 ECDH - ECDH cert or ephemeral ECDH 4402 4403 aECDH - ECDH cert 4404 aECDSA - ECDSA cert 4405 ECDSA - ECDSA cert 4406 4407 AECDH - anonymous ECDH 4408 EECDH - non-anonymous ephemeral ECDH (equivalent to "kEECDH:-AECDH") 4409 4410 [Bodo Moeller] 4411 4412 *) Add additional S/MIME capabilities for AES and GOST ciphers if supported. 4413 Use correct micalg parameters depending on digest(s) in signed message. 4414 [Steve Henson] 4415 4416 *) Add engine support for EVP_PKEY_ASN1_METHOD. Add functions to process 4417 an ENGINE asn1 method. Support ENGINE lookups in the ASN1 code. 4418 [Steve Henson] 4419 4420 *) Initial engine support for EVP_PKEY_METHOD. New functions to permit 4421 an engine to register a method. Add ENGINE lookups for methods and 4422 functional reference processing. 4423 [Steve Henson] 4424 4425 *) New functions EVP_Digest{Sign,Verify)*. These are enhanced versions of 4426 EVP_{Sign,Verify}* which allow an application to customise the signature 4427 process. 4428 [Steve Henson] 4429 4430 *) New -resign option to smime utility. This adds one or more signers 4431 to an existing PKCS#7 signedData structure. Also -md option to use an 4432 alternative message digest algorithm for signing. 4433 [Steve Henson] 4434 4435 *) Tidy up PKCS#7 routines and add new functions to make it easier to 4436 create PKCS7 structures containing multiple signers. Update smime 4437 application to support multiple signers. 4438 [Steve Henson] 4439 4440 *) New -macalg option to pkcs12 utility to allow setting of an alternative 4441 digest MAC. 4442 [Steve Henson] 4443 4444 *) Initial support for PKCS#5 v2.0 PRFs other than default SHA1 HMAC. 4445 Reorganize PBE internals to lookup from a static table using NIDs, 4446 add support for HMAC PBE OID translation. Add a EVP_CIPHER ctrl: 4447 EVP_CTRL_PBE_PRF_NID this allows a cipher to specify an alternative 4448 PRF which will be automatically used with PBES2. 4449 [Steve Henson] 4450 4451 *) Replace the algorithm specific calls to generate keys in "req" with the 4452 new API. 4453 [Steve Henson] 4454 4455 *) Update PKCS#7 enveloped data routines to use new API. This is now 4456 supported by any public key method supporting the encrypt operation. A 4457 ctrl is added to allow the public key algorithm to examine or modify 4458 the PKCS#7 RecipientInfo structure if it needs to: for RSA this is 4459 a no op. 4460 [Steve Henson] 4461 4462 *) Add a ctrl to asn1 method to allow a public key algorithm to express 4463 a default digest type to use. In most cases this will be SHA1 but some 4464 algorithms (such as GOST) need to specify an alternative digest. The 4465 return value indicates how strong the preference is 1 means optional and 4466 2 is mandatory (that is it is the only supported type). Modify 4467 ASN1_item_sign() to accept a NULL digest argument to indicate it should 4468 use the default md. Update openssl utilities to use the default digest 4469 type for signing if it is not explicitly indicated. 4470 [Steve Henson] 4471 4472 *) Use OID cross reference table in ASN1_sign() and ASN1_verify(). New 4473 EVP_MD flag EVP_MD_FLAG_PKEY_METHOD_SIGNATURE. This uses the relevant 4474 signing method from the key type. This effectively removes the link 4475 between digests and public key types. 4476 [Steve Henson] 4477 4478 *) Add an OID cross reference table and utility functions. Its purpose is to 4479 translate between signature OIDs such as SHA1WithrsaEncryption and SHA1, 4480 rsaEncryption. This will allow some of the algorithm specific hackery 4481 needed to use the correct OID to be removed. 4482 [Steve Henson] 4483 4484 *) Remove algorithm specific dependencies when setting PKCS7_SIGNER_INFO 4485 structures for PKCS7_sign(). They are now set up by the relevant public 4486 key ASN1 method. 4487 [Steve Henson] 4488 4489 *) Add provisional EC pkey method with support for ECDSA and ECDH. 4490 [Steve Henson] 4491 4492 *) Add support for key derivation (agreement) in the API, DH method and 4493 pkeyutl. 4494 [Steve Henson] 4495 4496 *) Add DSA pkey method and DH pkey methods, extend DH ASN1 method to support 4497 public and private key formats. As a side effect these add additional 4498 command line functionality not previously available: DSA signatures can be 4499 generated and verified using pkeyutl and DH key support and generation in 4500 pkey, genpkey. 4501 [Steve Henson] 4502 4503 *) BeOS support. 4504 [Oliver Tappe <zooey@hirschkaefer.de>] 4505 4506 *) New make target "install_html_docs" installs HTML renditions of the 4507 manual pages. 4508 [Oliver Tappe <zooey@hirschkaefer.de>] 4509 4510 *) New utility "genpkey" this is analogous to "genrsa" etc except it can 4511 generate keys for any algorithm. Extend and update EVP_PKEY_METHOD to 4512 support key and parameter generation and add initial key generation 4513 functionality for RSA. 4514 [Steve Henson] 4515 4516 *) Add functions for main EVP_PKEY_method operations. The undocumented 4517 functions EVP_PKEY_{encrypt,decrypt} have been renamed to 4518 EVP_PKEY_{encrypt,decrypt}_old. 4519 [Steve Henson] 4520 4521 *) Initial definitions for EVP_PKEY_METHOD. This will be a high level public 4522 key API, doesn't do much yet. 4523 [Steve Henson] 4524 4525 *) New function EVP_PKEY_asn1_get0_info() to retrieve information about 4526 public key algorithms. New option to openssl utility: 4527 "list-public-key-algorithms" to print out info. 4528 [Steve Henson] 4529 4530 *) Implement the Supported Elliptic Curves Extension for 4531 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 4532 [Douglas Stebila] 4533 4534 *) Don't free up OIDs in OBJ_cleanup() if they are in use by EVP_MD or 4535 EVP_CIPHER structures to avoid later problems in EVP_cleanup(). 4536 [Steve Henson] 4537 4538 *) New utilities pkey and pkeyparam. These are similar to algorithm specific 4539 utilities such as rsa, dsa, dsaparam etc except they process any key 4540 type. 4541 [Steve Henson] 4542 4543 *) Transfer public key printing routines to EVP_PKEY_ASN1_METHOD. New 4544 functions EVP_PKEY_print_public(), EVP_PKEY_print_private(), 4545 EVP_PKEY_print_param() to print public key data from an EVP_PKEY 4546 structure. 4547 [Steve Henson] 4548 4549 *) Initial support for pluggable public key ASN1. 4550 De-spaghettify the public key ASN1 handling. Move public and private 4551 key ASN1 handling to a new EVP_PKEY_ASN1_METHOD structure. Relocate 4552 algorithm specific handling to a single module within the relevant 4553 algorithm directory. Add functions to allow (near) opaque processing 4554 of public and private key structures. 4555 [Steve Henson] 4556 4557 *) Implement the Supported Point Formats Extension for 4558 ECC ciphersuites from draft-ietf-tls-ecc-12.txt. 4559 [Douglas Stebila] 4560 4561 *) Add initial support for RFC 4279 PSK TLS ciphersuites. Add members 4562 for the psk identity [hint] and the psk callback functions to the 4563 SSL_SESSION, SSL and SSL_CTX structure. 4564 4565 New ciphersuites: 4566 PSK-RC4-SHA, PSK-3DES-EDE-CBC-SHA, PSK-AES128-CBC-SHA, 4567 PSK-AES256-CBC-SHA 4568 4569 New functions: 4570 SSL_CTX_use_psk_identity_hint 4571 SSL_get_psk_identity_hint 4572 SSL_get_psk_identity 4573 SSL_use_psk_identity_hint 4574 4575 [Mika Kousa and Pasi Eronen of Nokia Corporation] 4576 4577 *) Add RFC 3161 compliant time stamp request creation, response generation 4578 and response verification functionality. 4579 [Zoltán Glózik <zglozik@opentsa.org>, The OpenTSA Project] 4580 4581 *) Add initial support for TLS extensions, specifically for the server_name 4582 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 4583 have new members for a host name. The SSL data structure has an 4584 additional member SSL_CTX *initial_ctx so that new sessions can be 4585 stored in that context to allow for session resumption, even after the 4586 SSL has been switched to a new SSL_CTX in reaction to a client's 4587 server_name extension. 4588 4589 New functions (subject to change): 4590 4591 SSL_get_servername() 4592 SSL_get_servername_type() 4593 SSL_set_SSL_CTX() 4594 4595 New CTRL codes and macros (subject to change): 4596 4597 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 4598 - SSL_CTX_set_tlsext_servername_callback() 4599 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 4600 - SSL_CTX_set_tlsext_servername_arg() 4601 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 4602 4603 openssl s_client has a new '-servername ...' option. 4604 4605 openssl s_server has new options '-servername_host ...', '-cert2 ...', 4606 '-key2 ...', '-servername_fatal' (subject to change). This allows 4607 testing the HostName extension for a specific single host name ('-cert' 4608 and '-key' remain fallbacks for handshakes without HostName 4609 negotiation). If the unrecognized_name alert has to be sent, this by 4610 default is a warning; it becomes fatal with the '-servername_fatal' 4611 option. 4612 4613 [Peter Sylvester, Remy Allais, Christophe Renou] 4614 4615 *) Whirlpool hash implementation is added. 4616 [Andy Polyakov] 4617 4618 *) BIGNUM code on 64-bit SPARCv9 targets is switched from bn(64,64) to 4619 bn(64,32). Because of instruction set limitations it doesn't have 4620 any negative impact on performance. This was done mostly in order 4621 to make it possible to share assembler modules, such as bn_mul_mont 4622 implementations, between 32- and 64-bit builds without hassle. 4623 [Andy Polyakov] 4624 4625 *) Move code previously exiled into file crypto/ec/ec2_smpt.c 4626 to ec2_smpl.c, and no longer require the OPENSSL_EC_BIN_PT_COMP 4627 macro. 4628 [Bodo Moeller] 4629 4630 *) New candidate for BIGNUM assembler implementation, bn_mul_mont, 4631 dedicated Montgomery multiplication procedure, is introduced. 4632 BN_MONT_CTX is modified to allow bn_mul_mont to reach for higher 4633 "64-bit" performance on certain 32-bit targets. 4634 [Andy Polyakov] 4635 4636 *) New option SSL_OP_NO_COMP to disable use of compression selectively 4637 in SSL structures. New SSL ctrl to set maximum send fragment size. 4638 Save memory by setting the I/O buffer sizes dynamically instead of 4639 using the maximum available value. 4640 [Steve Henson] 4641 4642 *) New option -V for 'openssl ciphers'. This prints the ciphersuite code 4643 in addition to the text details. 4644 [Bodo Moeller] 4645 4646 *) Very, very preliminary EXPERIMENTAL support for printing of general 4647 ASN1 structures. This currently produces rather ugly output and doesn't 4648 handle several customised structures at all. 4649 [Steve Henson] 4650 4651 *) Integrated support for PVK file format and some related formats such 4652 as MS PUBLICKEYBLOB and PRIVATEKEYBLOB. Command line switches to support 4653 these in the 'rsa' and 'dsa' utilities. 4654 [Steve Henson] 4655 4656 *) Support for PKCS#1 RSAPublicKey format on rsa utility command line. 4657 [Steve Henson] 4658 4659 *) Remove the ancient ASN1_METHOD code. This was only ever used in one 4660 place for the (very old) "NETSCAPE" format certificates which are now 4661 handled using new ASN1 code equivalents. 4662 [Steve Henson] 4663 4664 *) Let the TLSv1_method() etc. functions return a 'const' SSL_METHOD 4665 pointer and make the SSL_METHOD parameter in SSL_CTX_new, 4666 SSL_CTX_set_ssl_version and SSL_set_ssl_method 'const'. 4667 [Nils Larsch] 4668 4669 *) Modify CRL distribution points extension code to print out previously 4670 unsupported fields. Enhance extension setting code to allow setting of 4671 all fields. 4672 [Steve Henson] 4673 4674 *) Add print and set support for Issuing Distribution Point CRL extension. 4675 [Steve Henson] 4676 4677 *) Change 'Configure' script to enable Camellia by default. 4678 [NTT] 4679 4680 Changes between 0.9.8m and 0.9.8n [24 Mar 2010] 4681 4682 *) When rejecting SSL/TLS records due to an incorrect version number, never 4683 update s->server with a new major version number. As of 4684 - OpenSSL 0.9.8m if 'short' is a 16-bit type, 4685 - OpenSSL 0.9.8f if 'short' is longer than 16 bits, 4686 the previous behavior could result in a read attempt at NULL when 4687 receiving specific incorrect SSL/TLS records once record payload 4688 protection is active. (CVE-2010-0740) 4689 [Bodo Moeller, Adam Langley <agl@chromium.org>] 4690 4691 *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL 4692 could be crashed if the relevant tables were not present (e.g. chrooted). 4693 [Tomas Hoger <thoger@redhat.com>] 4694 4695 Changes between 0.9.8l and 0.9.8m [25 Feb 2010] 4696 4697 *) Always check bn_wexpand() return values for failure. (CVE-2009-3245) 4698 [Martin Olsson, Neel Mehta] 4699 4700 *) Fix X509_STORE locking: Every 'objs' access requires a lock (to 4701 accommodate for stack sorting, always a write lock!). 4702 [Bodo Moeller] 4703 4704 *) On some versions of WIN32 Heap32Next is very slow. This can cause 4705 excessive delays in the RAND_poll(): over a minute. As a workaround 4706 include a time check in the inner Heap32Next loop too. 4707 [Steve Henson] 4708 4709 *) The code that handled flushing of data in SSL/TLS originally used the 4710 BIO_CTRL_INFO ctrl to see if any data was pending first. This caused 4711 the problem outlined in PR#1949. The fix suggested there however can 4712 trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions 4713 of Apache). So instead simplify the code to flush unconditionally. 4714 This should be fine since flushing with no data to flush is a no op. 4715 [Steve Henson] 4716 4717 *) Handle TLS versions 2.0 and later properly and correctly use the 4718 highest version of TLS/SSL supported. Although TLS >= 2.0 is some way 4719 off ancient servers have a habit of sticking around for a while... 4720 [Steve Henson] 4721 4722 *) Modify compression code so it frees up structures without using the 4723 ex_data callbacks. This works around a problem where some applications 4724 call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when 4725 restarting) then use compression (e.g. SSL with compression) later. 4726 This results in significant per-connection memory leaks and 4727 has caused some security issues including CVE-2008-1678 and 4728 CVE-2009-4355. 4729 [Steve Henson] 4730 4731 *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't 4732 change when encrypting or decrypting. 4733 [Bodo Moeller] 4734 4735 *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to 4736 connect and renegotiate with servers which do not support RI. 4737 Until RI is more widely deployed this option is enabled by default. 4738 [Steve Henson] 4739 4740 *) Add "missing" ssl ctrls to clear options and mode. 4741 [Steve Henson] 4742 4743 *) If client attempts to renegotiate and doesn't support RI respond with 4744 a no_renegotiation alert as required by RFC5746. Some renegotiating 4745 TLS clients will continue a connection gracefully when they receive 4746 the alert. Unfortunately OpenSSL mishandled this alert and would hang 4747 waiting for a server hello which it will never receive. Now we treat a 4748 received no_renegotiation alert as a fatal error. This is because 4749 applications requesting a renegotiation might well expect it to succeed 4750 and would have no code in place to handle the server denying it so the 4751 only safe thing to do is to terminate the connection. 4752 [Steve Henson] 4753 4754 *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if 4755 peer supports secure renegotiation and 0 otherwise. Print out peer 4756 renegotiation support in s_client/s_server. 4757 [Steve Henson] 4758 4759 *) Replace the highly broken and deprecated SPKAC certification method with 4760 the updated NID creation version. This should correctly handle UTF8. 4761 [Steve Henson] 4762 4763 *) Implement RFC5746. Re-enable renegotiation but require the extension 4764 as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION 4765 turns out to be a bad idea. It has been replaced by 4766 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with 4767 SSL_CTX_set_options(). This is really not recommended unless you 4768 know what you are doing. 4769 [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson] 4770 4771 *) Fixes to stateless session resumption handling. Use initial_ctx when 4772 issuing and attempting to decrypt tickets in case it has changed during 4773 servername handling. Use a non-zero length session ID when attempting 4774 stateless session resumption: this makes it possible to determine if 4775 a resumption has occurred immediately after receiving server hello 4776 (several places in OpenSSL subtly assume this) instead of later in 4777 the handshake. 4778 [Steve Henson] 4779 4780 *) The functions ENGINE_ctrl(), OPENSSL_isservice(), 4781 CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error 4782 fixes for a few places where the return code is not checked 4783 correctly. 4784 [Julia Lawall <julia@diku.dk>] 4785 4786 *) Add --strict-warnings option to Configure script to include devteam 4787 warnings in other configurations. 4788 [Steve Henson] 4789 4790 *) Add support for --libdir option and LIBDIR variable in makefiles. This 4791 makes it possible to install openssl libraries in locations which 4792 have names other than "lib", for example "/usr/lib64" which some 4793 systems need. 4794 [Steve Henson, based on patch from Jeremy Utley] 4795 4796 *) Don't allow the use of leading 0x80 in OIDs. This is a violation of 4797 X690 8.9.12 and can produce some misleading textual output of OIDs. 4798 [Steve Henson, reported by Dan Kaminsky] 4799 4800 *) Delete MD2 from algorithm tables. This follows the recommendation in 4801 several standards that it is not used in new applications due to 4802 several cryptographic weaknesses. For binary compatibility reasons 4803 the MD2 API is still compiled in by default. 4804 [Steve Henson] 4805 4806 *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved 4807 and restored. 4808 [Steve Henson] 4809 4810 *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and 4811 OPENSSL_asc2uni conditionally on Netware platforms to avoid a name 4812 clash. 4813 [Guenter <lists@gknw.net>] 4814 4815 *) Fix the server certificate chain building code to use X509_verify_cert(), 4816 it used to have an ad-hoc builder which was unable to cope with anything 4817 other than a simple chain. 4818 [David Woodhouse <dwmw2@infradead.org>, Steve Henson] 4819 4820 *) Don't check self signed certificate signatures in X509_verify_cert() 4821 by default (a flag can override this): it just wastes time without 4822 adding any security. As a useful side effect self signed root CAs 4823 with non-FIPS digests are now usable in FIPS mode. 4824 [Steve Henson] 4825 4826 *) In dtls1_process_out_of_seq_message() the check if the current message 4827 is already buffered was missing. For every new message was memory 4828 allocated, allowing an attacker to perform an denial of service attack 4829 with sending out of seq handshake messages until there is no memory 4830 left. Additionally every future message was buffered, even if the 4831 sequence number made no sense and would be part of another handshake. 4832 So only messages with sequence numbers less than 10 in advance will be 4833 buffered. (CVE-2009-1378) 4834 [Robin Seggelmann, discovered by Daniel Mentz] 4835 4836 *) Records are buffered if they arrive with a future epoch to be 4837 processed after finishing the corresponding handshake. There is 4838 currently no limitation to this buffer allowing an attacker to perform 4839 a DOS attack with sending records with future epochs until there is no 4840 memory left. This patch adds the pqueue_size() function to determine 4841 the size of a buffer and limits the record buffer to 100 entries. 4842 (CVE-2009-1377) 4843 [Robin Seggelmann, discovered by Daniel Mentz] 4844 4845 *) Keep a copy of frag->msg_header.frag_len so it can be used after the 4846 parent structure is freed. (CVE-2009-1379) 4847 [Daniel Mentz] 4848 4849 *) Handle non-blocking I/O properly in SSL_shutdown() call. 4850 [Darryl Miles <darryl-mailinglists@netbauds.net>] 4851 4852 *) Add 2.5.4.* OIDs 4853 [Ilya O. <vrghost@gmail.com>] 4854 4855 Changes between 0.9.8k and 0.9.8l [5 Nov 2009] 4856 4857 *) Disable renegotiation completely - this fixes a severe security 4858 problem (CVE-2009-3555) at the cost of breaking all 4859 renegotiation. Renegotiation can be re-enabled by setting 4860 SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at 4861 run-time. This is really not recommended unless you know what 4862 you're doing. 4863 [Ben Laurie] 4864 4865 Changes between 0.9.8j and 0.9.8k [25 Mar 2009] 4866 4867 *) Don't set val to NULL when freeing up structures, it is freed up by 4868 underlying code. If sizeof(void *) > sizeof(long) this can result in 4869 zeroing past the valid field. (CVE-2009-0789) 4870 [Paolo Ganci <Paolo.Ganci@AdNovum.CH>] 4871 4872 *) Fix bug where return value of CMS_SignerInfo_verify_content() was not 4873 checked correctly. This would allow some invalid signed attributes to 4874 appear to verify correctly. (CVE-2009-0591) 4875 [Ivan Nestlerode <inestlerode@us.ibm.com>] 4876 4877 *) Reject UniversalString and BMPString types with invalid lengths. This 4878 prevents a crash in ASN1_STRING_print_ex() which assumes the strings have 4879 a legal length. (CVE-2009-0590) 4880 [Steve Henson] 4881 4882 *) Set S/MIME signing as the default purpose rather than setting it 4883 unconditionally. This allows applications to override it at the store 4884 level. 4885 [Steve Henson] 4886 4887 *) Permit restricted recursion of ASN1 strings. This is needed in practice 4888 to handle some structures. 4889 [Steve Henson] 4890 4891 *) Improve efficiency of mem_gets: don't search whole buffer each time 4892 for a '\n' 4893 [Jeremy Shapiro <jnshapir@us.ibm.com>] 4894 4895 *) New -hex option for openssl rand. 4896 [Matthieu Herrb] 4897 4898 *) Print out UTF8String and NumericString when parsing ASN1. 4899 [Steve Henson] 4900 4901 *) Support NumericString type for name components. 4902 [Steve Henson] 4903 4904 *) Allow CC in the environment to override the automatically chosen 4905 compiler. Note that nothing is done to ensure flags work with the 4906 chosen compiler. 4907 [Ben Laurie] 4908 4909 Changes between 0.9.8i and 0.9.8j [07 Jan 2009] 4910 4911 *) Properly check EVP_VerifyFinal() and similar return values 4912 (CVE-2008-5077). 4913 [Ben Laurie, Bodo Moeller, Google Security Team] 4914 4915 *) Enable TLS extensions by default. 4916 [Ben Laurie] 4917 4918 *) Allow the CHIL engine to be loaded, whether the application is 4919 multithreaded or not. (This does not release the developer from the 4920 obligation to set up the dynamic locking callbacks.) 4921 [Sander Temme <sander@temme.net>] 4922 4923 *) Use correct exit code if there is an error in dgst command. 4924 [Steve Henson; problem pointed out by Roland Dirlewanger] 4925 4926 *) Tweak Configure so that you need to say "experimental-jpake" to enable 4927 JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications. 4928 [Bodo Moeller] 4929 4930 *) Add experimental JPAKE support, including demo authentication in 4931 s_client and s_server. 4932 [Ben Laurie] 4933 4934 *) Set the comparison function in v3_addr_canonize(). 4935 [Rob Austein <sra@hactrn.net>] 4936 4937 *) Add support for XMPP STARTTLS in s_client. 4938 [Philip Paeps <philip@freebsd.org>] 4939 4940 *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior 4941 to ensure that even with this option, only ciphersuites in the 4942 server's preference list will be accepted. (Note that the option 4943 applies only when resuming a session, so the earlier behavior was 4944 just about the algorithm choice for symmetric cryptography.) 4945 [Bodo Moeller] 4946 4947 Changes between 0.9.8h and 0.9.8i [15 Sep 2008] 4948 4949 *) Fix NULL pointer dereference if a DTLS server received 4950 ChangeCipherSpec as first record (CVE-2009-1386). 4951 [PR #1679] 4952 4953 *) Fix a state transition in s3_srvr.c and d1_srvr.c 4954 (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...). 4955 [Nagendra Modadugu] 4956 4957 *) The fix in 0.9.8c that supposedly got rid of unsafe 4958 double-checked locking was incomplete for RSA blinding, 4959 addressing just one layer of what turns out to have been 4960 doubly unsafe triple-checked locking. 4961 4962 So now fix this for real by retiring the MONT_HELPER macro 4963 in crypto/rsa/rsa_eay.c. 4964 4965 [Bodo Moeller; problem pointed out by Marius Schilder] 4966 4967 *) Various precautionary measures: 4968 4969 - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h). 4970 4971 - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c). 4972 (NB: This would require knowledge of the secret session ticket key 4973 to exploit, in which case you'd be SOL either way.) 4974 4975 - Change bn_nist.c so that it will properly handle input BIGNUMs 4976 outside the expected range. 4977 4978 - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG 4979 builds. 4980 4981 [Neel Mehta, Bodo Moeller] 4982 4983 *) Allow engines to be "soft loaded" - i.e. optionally don't die if 4984 the load fails. Useful for distros. 4985 [Ben Laurie and the FreeBSD team] 4986 4987 *) Add support for Local Machine Keyset attribute in PKCS#12 files. 4988 [Steve Henson] 4989 4990 *) Fix BN_GF2m_mod_arr() top-bit cleanup code. 4991 [Huang Ying] 4992 4993 *) Expand ENGINE to support engine supplied SSL client certificate functions. 4994 4995 This work was sponsored by Logica. 4996 [Steve Henson] 4997 4998 *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows 4999 keystores. Support for SSL/TLS client authentication too. 5000 Not compiled unless enable-capieng specified to Configure. 5001 5002 This work was sponsored by Logica. 5003 [Steve Henson] 5004 5005 *) Fix bug in X509_ATTRIBUTE creation: don't set attribute using 5006 ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain 5007 attribute creation routines such as certificate requests and PKCS#12 5008 files. 5009 [Steve Henson] 5010 5011 Changes between 0.9.8g and 0.9.8h [28 May 2008] 5012 5013 *) Fix flaw if 'Server Key exchange message' is omitted from a TLS 5014 handshake which could lead to a client crash as found using the 5015 Codenomicon TLS test suite (CVE-2008-1672) 5016 [Steve Henson, Mark Cox] 5017 5018 *) Fix double free in TLS server name extensions which could lead to 5019 a remote crash found by Codenomicon TLS test suite (CVE-2008-0891) 5020 [Joe Orton] 5021 5022 *) Clear error queue in SSL_CTX_use_certificate_chain_file() 5023 5024 Clear the error queue to ensure that error entries left from 5025 older function calls do not interfere with the correct operation. 5026 [Lutz Jaenicke, Erik de Castro Lopo] 5027 5028 *) Remove root CA certificates of commercial CAs: 5029 5030 The OpenSSL project does not recommend any specific CA and does not 5031 have any policy with respect to including or excluding any CA. 5032 Therefore it does not make any sense to ship an arbitrary selection 5033 of root CA certificates with the OpenSSL software. 5034 [Lutz Jaenicke] 5035 5036 *) RSA OAEP patches to fix two separate invalid memory reads. 5037 The first one involves inputs when 'lzero' is greater than 5038 'SHA_DIGEST_LENGTH' (it would read about SHA_DIGEST_LENGTH bytes 5039 before the beginning of from). The second one involves inputs where 5040 the 'db' section contains nothing but zeroes (there is a one-byte 5041 invalid read after the end of 'db'). 5042 [Ivan Nestlerode <inestlerode@us.ibm.com>] 5043 5044 *) Partial backport from 0.9.9-dev: 5045 5046 Introduce bn_mul_mont (dedicated Montgomery multiplication 5047 procedure) as a candidate for BIGNUM assembler implementation. 5048 While 0.9.9-dev uses assembler for various architectures, only 5049 x86_64 is available by default here in the 0.9.8 branch, and 5050 32-bit x86 is available through a compile-time setting. 5051 5052 To try the 32-bit x86 assembler implementation, use Configure 5053 option "enable-montasm" (which exists only for this backport). 5054 5055 As "enable-montasm" for 32-bit x86 disclaims code stability 5056 anyway, in this constellation we activate additional code 5057 backported from 0.9.9-dev for further performance improvements, 5058 namely BN_from_montgomery_word. (To enable this otherwise, 5059 e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".) 5060 5061 [Andy Polyakov (backport partially by Bodo Moeller)] 5062 5063 *) Add TLS session ticket callback. This allows an application to set 5064 TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed 5065 values. This is useful for key rollover for example where several key 5066 sets may exist with different names. 5067 [Steve Henson] 5068 5069 *) Reverse ENGINE-internal logic for caching default ENGINE handles. 5070 This was broken until now in 0.9.8 releases, such that the only way 5071 a registered ENGINE could be used (assuming it initialises 5072 successfully on the host) was to explicitly set it as the default 5073 for the relevant algorithms. This is in contradiction with 0.9.7 5074 behaviour and the documentation. With this fix, when an ENGINE is 5075 registered into a given algorithm's table of implementations, the 5076 'uptodate' flag is reset so that auto-discovery will be used next 5077 time a new context for that algorithm attempts to select an 5078 implementation. 5079 [Ian Lister (tweaked by Geoff Thorpe)] 5080 5081 *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9 5082 implementation in the following ways: 5083 5084 Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be 5085 hard coded. 5086 5087 Lack of BER streaming support means one pass streaming processing is 5088 only supported if data is detached: setting the streaming flag is 5089 ignored for embedded content. 5090 5091 CMS support is disabled by default and must be explicitly enabled 5092 with the enable-cms configuration option. 5093 [Steve Henson] 5094 5095 *) Update the GMP engine glue to do direct copies between BIGNUM and 5096 mpz_t when openssl and GMP use the same limb size. Otherwise the 5097 existing "conversion via a text string export" trick is still used. 5098 [Paul Sheer <paulsheer@gmail.com>] 5099 5100 *) Zlib compression BIO. This is a filter BIO which compressed and 5101 uncompresses any data passed through it. 5102 [Steve Henson] 5103 5104 *) Add AES_wrap_key() and AES_unwrap_key() functions to implement 5105 RFC3394 compatible AES key wrapping. 5106 [Steve Henson] 5107 5108 *) Add utility functions to handle ASN1 structures. ASN1_STRING_set0(): 5109 sets string data without copying. X509_ALGOR_set0() and 5110 X509_ALGOR_get0(): set and retrieve X509_ALGOR (AlgorithmIdentifier) 5111 data. Attribute function X509at_get0_data_by_OBJ(): retrieves data 5112 from an X509_ATTRIBUTE structure optionally checking it occurs only 5113 once. ASN1_TYPE_set1(): set and ASN1_TYPE structure copying supplied 5114 data. 5115 [Steve Henson] 5116 5117 *) Fix BN flag handling in RSA_eay_mod_exp() and BN_MONT_CTX_set() 5118 to get the expected BN_FLG_CONSTTIME behavior. 5119 [Bodo Moeller (Google)] 5120 5121 *) Netware support: 5122 5123 - fixed wrong usage of ioctlsocket() when build for LIBC BSD sockets 5124 - fixed do_tests.pl to run the test suite with CLIB builds too (CLIB_OPT) 5125 - added some more tests to do_tests.pl 5126 - fixed RunningProcess usage so that it works with newer LIBC NDKs too 5127 - removed usage of BN_LLONG for CLIB builds to avoid runtime dependency 5128 - added new Configure targets netware-clib-bsdsock, netware-clib-gcc, 5129 netware-clib-bsdsock-gcc, netware-libc-bsdsock-gcc 5130 - various changes to netware.pl to enable gcc-cross builds on Win32 5131 platform 5132 - changed crypto/bio/b_sock.c to work with macro functions (CLIB BSD) 5133 - various changes to fix missing prototype warnings 5134 - fixed x86nasm.pl to create correct asm files for NASM COFF output 5135 - added AES, WHIRLPOOL and CPUID assembler code to build files 5136 - added missing AES assembler make rules to mk1mf.pl 5137 - fixed order of includes in apps/ocsp.c so that e_os.h settings apply 5138 [Guenter Knauf <eflash@gmx.net>] 5139 5140 *) Implement certificate status request TLS extension defined in RFC3546. 5141 A client can set the appropriate parameters and receive the encoded 5142 OCSP response via a callback. A server can query the supplied parameters 5143 and set the encoded OCSP response in the callback. Add simplified examples 5144 to s_client and s_server. 5145 [Steve Henson] 5146 5147 Changes between 0.9.8f and 0.9.8g [19 Oct 2007] 5148 5149 *) Fix various bugs: 5150 + Binary incompatibility of ssl_ctx_st structure 5151 + DTLS interoperation with non-compliant servers 5152 + Don't call get_session_cb() without proposed session 5153 + Fix ia64 assembler code 5154 [Andy Polyakov, Steve Henson] 5155 5156 Changes between 0.9.8e and 0.9.8f [11 Oct 2007] 5157 5158 *) DTLS Handshake overhaul. There were longstanding issues with 5159 OpenSSL DTLS implementation, which were making it impossible for 5160 RFC 4347 compliant client to communicate with OpenSSL server. 5161 Unfortunately just fixing these incompatibilities would "cut off" 5162 pre-0.9.8f clients. To allow for hassle free upgrade post-0.9.8e 5163 server keeps tolerating non RFC compliant syntax. The opposite is 5164 not true, 0.9.8f client can not communicate with earlier server. 5165 This update even addresses CVE-2007-4995. 5166 [Andy Polyakov] 5167 5168 *) Changes to avoid need for function casts in OpenSSL: some compilers 5169 (gcc 4.2 and later) reject their use. 5170 [Kurt Roeckx <kurt@roeckx.be>, Peter Hartley <pdh@utter.chaos.org.uk>, 5171 Steve Henson] 5172 5173 *) Add RFC4507 support to OpenSSL. This includes the corrections in 5174 RFC4507bis. The encrypted ticket format is an encrypted encoded 5175 SSL_SESSION structure, that way new session features are automatically 5176 supported. 5177 5178 If a client application caches session in an SSL_SESSION structure 5179 support is transparent because tickets are now stored in the encoded 5180 SSL_SESSION. 5181 5182 The SSL_CTX structure automatically generates keys for ticket 5183 protection in servers so again support should be possible 5184 with no application modification. 5185 5186 If a client or server wishes to disable RFC4507 support then the option 5187 SSL_OP_NO_TICKET can be set. 5188 5189 Add a TLS extension debugging callback to allow the contents of any client 5190 or server extensions to be examined. 5191 5192 This work was sponsored by Google. 5193 [Steve Henson] 5194 5195 *) Add initial support for TLS extensions, specifically for the server_name 5196 extension so far. The SSL_SESSION, SSL_CTX, and SSL data structures now 5197 have new members for a host name. The SSL data structure has an 5198 additional member SSL_CTX *initial_ctx so that new sessions can be 5199 stored in that context to allow for session resumption, even after the 5200 SSL has been switched to a new SSL_CTX in reaction to a client's 5201 server_name extension. 5202 5203 New functions (subject to change): 5204 5205 SSL_get_servername() 5206 SSL_get_servername_type() 5207 SSL_set_SSL_CTX() 5208 5209 New CTRL codes and macros (subject to change): 5210 5211 SSL_CTRL_SET_TLSEXT_SERVERNAME_CB 5212 - SSL_CTX_set_tlsext_servername_callback() 5213 SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG 5214 - SSL_CTX_set_tlsext_servername_arg() 5215 SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name() 5216 5217 openssl s_client has a new '-servername ...' option. 5218 5219 openssl s_server has new options '-servername_host ...', '-cert2 ...', 5220 '-key2 ...', '-servername_fatal' (subject to change). This allows 5221 testing the HostName extension for a specific single host name ('-cert' 5222 and '-key' remain fallbacks for handshakes without HostName 5223 negotiation). If the unrecognized_name alert has to be sent, this by 5224 default is a warning; it becomes fatal with the '-servername_fatal' 5225 option. 5226 5227 [Peter Sylvester, Remy Allais, Christophe Renou, Steve Henson] 5228 5229 *) Add AES and SSE2 assembly language support to VC++ build. 5230 [Steve Henson] 5231 5232 *) Mitigate attack on final subtraction in Montgomery reduction. 5233 [Andy Polyakov] 5234 5235 *) Fix crypto/ec/ec_mult.c to work properly with scalars of value 0 5236 (which previously caused an internal error). 5237 [Bodo Moeller] 5238 5239 *) Squeeze another 10% out of IGE mode when in != out. 5240 [Ben Laurie] 5241 5242 *) AES IGE mode speedup. 5243 [Dean Gaudet (Google)] 5244 5245 *) Add the Korean symmetric 128-bit cipher SEED (see 5246 http://www.kisa.or.kr/kisa/seed/jsp/seed_eng.jsp) and 5247 add SEED ciphersuites from RFC 4162: 5248 5249 TLS_RSA_WITH_SEED_CBC_SHA = "SEED-SHA" 5250 TLS_DHE_DSS_WITH_SEED_CBC_SHA = "DHE-DSS-SEED-SHA" 5251 TLS_DHE_RSA_WITH_SEED_CBC_SHA = "DHE-RSA-SEED-SHA" 5252 TLS_DH_anon_WITH_SEED_CBC_SHA = "ADH-SEED-SHA" 5253 5254 To minimize changes between patchlevels in the OpenSSL 0.9.8 5255 series, SEED remains excluded from compilation unless OpenSSL 5256 is configured with 'enable-seed'. 5257 [KISA, Bodo Moeller] 5258 5259 *) Mitigate branch prediction attacks, which can be practical if a 5260 single processor is shared, allowing a spy process to extract 5261 information. For detailed background information, see 5262 http://eprint.iacr.org/2007/039 (O. Aciicmez, S. Gueron, 5263 J.-P. Seifert, "New Branch Prediction Vulnerabilities in OpenSSL 5264 and Necessary Software Countermeasures"). The core of the change 5265 are new versions BN_div_no_branch() and 5266 BN_mod_inverse_no_branch() of BN_div() and BN_mod_inverse(), 5267 respectively, which are slower, but avoid the security-relevant 5268 conditional branches. These are automatically called by BN_div() 5269 and BN_mod_inverse() if the flag BN_FLG_CONSTTIME is set for one 5270 of the input BIGNUMs. Also, BN_is_bit_set() has been changed to 5271 remove a conditional branch. 5272 5273 BN_FLG_CONSTTIME is the new name for the previous 5274 BN_FLG_EXP_CONSTTIME flag, since it now affects more than just 5275 modular exponentiation. (Since OpenSSL 0.9.7h, setting this flag 5276 in the exponent causes BN_mod_exp_mont() to use the alternative 5277 implementation in BN_mod_exp_mont_consttime().) The old name 5278 remains as a deprecated alias. 5279 5280 Similarly, RSA_FLAG_NO_EXP_CONSTTIME is replaced by a more general 5281 RSA_FLAG_NO_CONSTTIME flag since the RSA implementation now uses 5282 constant-time implementations for more than just exponentiation. 5283 Here too the old name is kept as a deprecated alias. 5284 5285 BN_BLINDING_new() will now use BN_dup() for the modulus so that 5286 the BN_BLINDING structure gets an independent copy of the 5287 modulus. This means that the previous "BIGNUM *m" argument to 5288 BN_BLINDING_new() and to BN_BLINDING_create_param() now 5289 essentially becomes "const BIGNUM *m", although we can't actually 5290 change this in the header file before 0.9.9. It allows 5291 RSA_setup_blinding() to use BN_with_flags() on the modulus to 5292 enable BN_FLG_CONSTTIME. 5293 5294 [Matthew D Wood (Intel Corp)] 5295 5296 *) In the SSL/TLS server implementation, be strict about session ID 5297 context matching (which matters if an application uses a single 5298 external cache for different purposes). Previously, 5299 out-of-context reuse was forbidden only if SSL_VERIFY_PEER was 5300 set. This did ensure strict client verification, but meant that, 5301 with applications using a single external cache for quite 5302 different requirements, clients could circumvent ciphersuite 5303 restrictions for a given session ID context by starting a session 5304 in a different context. 5305 [Bodo Moeller] 5306 5307 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 5308 a ciphersuite string such as "DEFAULT:RSA" cannot enable 5309 authentication-only ciphersuites. 5310 [Bodo Moeller] 5311 5312 *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was 5313 not complete and could lead to a possible single byte overflow 5314 (CVE-2007-5135) [Ben Laurie] 5315 5316 Changes between 0.9.8d and 0.9.8e [23 Feb 2007] 5317 5318 *) Since AES128 and AES256 (and similarly Camellia128 and 5319 Camellia256) share a single mask bit in the logic of 5320 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 5321 kludge to work properly if AES128 is available and AES256 isn't 5322 (or if Camellia128 is available and Camellia256 isn't). 5323 [Victor Duchovni] 5324 5325 *) Fix the BIT STRING encoding generated by crypto/ec/ec_asn1.c 5326 (within i2d_ECPrivateKey, i2d_ECPKParameters, i2d_ECParameters): 5327 When a point or a seed is encoded in a BIT STRING, we need to 5328 prevent the removal of trailing zero bits to get the proper DER 5329 encoding. (By default, crypto/asn1/a_bitstr.c assumes the case 5330 of a NamedBitList, for which trailing 0 bits need to be removed.) 5331 [Bodo Moeller] 5332 5333 *) Have SSL/TLS server implementation tolerate "mismatched" record 5334 protocol version while receiving ClientHello even if the 5335 ClientHello is fragmented. (The server can't insist on the 5336 particular protocol version it has chosen before the ServerHello 5337 message has informed the client about his choice.) 5338 [Bodo Moeller] 5339 5340 *) Add RFC 3779 support. 5341 [Rob Austein for ARIN, Ben Laurie] 5342 5343 *) Load error codes if they are not already present instead of using a 5344 static variable. This allows them to be cleanly unloaded and reloaded. 5345 Improve header file function name parsing. 5346 [Steve Henson] 5347 5348 *) extend SMTP and IMAP protocol emulation in s_client to use EHLO 5349 or CAPABILITY handshake as required by RFCs. 5350 [Goetz Babin-Ebell] 5351 5352 Changes between 0.9.8c and 0.9.8d [28 Sep 2006] 5353 5354 *) Introduce limits to prevent malicious keys being able to 5355 cause a denial of service. (CVE-2006-2940) 5356 [Steve Henson, Bodo Moeller] 5357 5358 *) Fix ASN.1 parsing of certain invalid structures that can result 5359 in a denial of service. (CVE-2006-2937) [Steve Henson] 5360 5361 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 5362 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 5363 5364 *) Fix SSL client code which could crash if connecting to a 5365 malicious SSLv2 server. (CVE-2006-4343) 5366 [Tavis Ormandy and Will Drewry, Google Security Team] 5367 5368 *) Since 0.9.8b, ciphersuite strings naming explicit ciphersuites 5369 match only those. Before that, "AES256-SHA" would be interpreted 5370 as a pattern and match "AES128-SHA" too (since AES128-SHA got 5371 the same strength classification in 0.9.7h) as we currently only 5372 have a single AES bit in the ciphersuite description bitmap. 5373 That change, however, also applied to ciphersuite strings such as 5374 "RC4-MD5" that intentionally matched multiple ciphersuites -- 5375 namely, SSL 2.0 ciphersuites in addition to the more common ones 5376 from SSL 3.0/TLS 1.0. 5377 5378 So we change the selection algorithm again: Naming an explicit 5379 ciphersuite selects this one ciphersuite, and any other similar 5380 ciphersuite (same bitmap) from *other* protocol versions. 5381 Thus, "RC4-MD5" again will properly select both the SSL 2.0 5382 ciphersuite and the SSL 3.0/TLS 1.0 ciphersuite. 5383 5384 Since SSL 2.0 does not have any ciphersuites for which the 5385 128/256 bit distinction would be relevant, this works for now. 5386 The proper fix will be to use different bits for AES128 and 5387 AES256, which would have avoided the problems from the beginning; 5388 however, bits are scarce, so we can only do this in a new release 5389 (not just a patchlevel) when we can change the SSL_CIPHER 5390 definition to split the single 'unsigned long mask' bitmap into 5391 multiple values to extend the available space. 5392 5393 [Bodo Moeller] 5394 5395 Changes between 0.9.8b and 0.9.8c [05 Sep 2006] 5396 5397 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 5398 (CVE-2006-4339) [Ben Laurie and Google Security Team] 5399 5400 *) Add AES IGE and biIGE modes. 5401 [Ben Laurie] 5402 5403 *) Change the Unix randomness entropy gathering to use poll() when 5404 possible instead of select(), since the latter has some 5405 undesirable limitations. 5406 [Darryl Miles via Richard Levitte and Bodo Moeller] 5407 5408 *) Disable "ECCdraft" ciphersuites more thoroughly. Now special 5409 treatment in ssl/ssl_ciph.s makes sure that these ciphersuites 5410 cannot be implicitly activated as part of, e.g., the "AES" alias. 5411 However, please upgrade to OpenSSL 0.9.9[-dev] for 5412 non-experimental use of the ECC ciphersuites to get TLS extension 5413 support, which is required for curve and point format negotiation 5414 to avoid potential handshake problems. 5415 [Bodo Moeller] 5416 5417 *) Disable rogue ciphersuites: 5418 5419 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 5420 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 5421 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 5422 5423 The latter two were purportedly from 5424 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 5425 appear there. 5426 5427 Also deactivate the remaining ciphersuites from 5428 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 5429 unofficial, and the ID has long expired. 5430 [Bodo Moeller] 5431 5432 *) Fix RSA blinding Heisenbug (problems sometimes occurred on 5433 dual-core machines) and other potential thread-safety issues. 5434 [Bodo Moeller] 5435 5436 *) Add the symmetric cipher Camellia (128-bit, 192-bit, 256-bit key 5437 versions), which is now available for royalty-free use 5438 (see http://info.isl.ntt.co.jp/crypt/eng/info/chiteki.html). 5439 Also, add Camellia TLS ciphersuites from RFC 4132. 5440 5441 To minimize changes between patchlevels in the OpenSSL 0.9.8 5442 series, Camellia remains excluded from compilation unless OpenSSL 5443 is configured with 'enable-camellia'. 5444 [NTT] 5445 5446 *) Disable the padding bug check when compression is in use. The padding 5447 bug check assumes the first packet is of even length, this is not 5448 necessarily true if compression is enabled and can result in false 5449 positives causing handshake failure. The actual bug test is ancient 5450 code so it is hoped that implementations will either have fixed it by 5451 now or any which still have the bug do not support compression. 5452 [Steve Henson] 5453 5454 Changes between 0.9.8a and 0.9.8b [04 May 2006] 5455 5456 *) When applying a cipher rule check to see if string match is an explicit 5457 cipher suite and only match that one cipher suite if it is. 5458 [Steve Henson] 5459 5460 *) Link in manifests for VC++ if needed. 5461 [Austin Ziegler <halostatue@gmail.com>] 5462 5463 *) Update support for ECC-based TLS ciphersuites according to 5464 draft-ietf-tls-ecc-12.txt with proposed changes (but without 5465 TLS extensions, which are supported starting with the 0.9.9 5466 branch, not in the OpenSSL 0.9.8 branch). 5467 [Douglas Stebila] 5468 5469 *) New functions EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() to support 5470 opaque EVP_CIPHER_CTX handling. 5471 [Steve Henson] 5472 5473 *) Fixes and enhancements to zlib compression code. We now only use 5474 "zlib1.dll" and use the default __cdecl calling convention on Win32 5475 to conform with the standards mentioned here: 5476 http://www.zlib.net/DLL_FAQ.txt 5477 Static zlib linking now works on Windows and the new --with-zlib-include 5478 --with-zlib-lib options to Configure can be used to supply the location 5479 of the headers and library. Gracefully handle case where zlib library 5480 can't be loaded. 5481 [Steve Henson] 5482 5483 *) Several fixes and enhancements to the OID generation code. The old code 5484 sometimes allowed invalid OIDs (1.X for X >= 40 for example), couldn't 5485 handle numbers larger than ULONG_MAX, truncated printing and had a 5486 non standard OBJ_obj2txt() behaviour. 5487 [Steve Henson] 5488 5489 *) Add support for building of engines under engine/ as shared libraries 5490 under VC++ build system. 5491 [Steve Henson] 5492 5493 *) Corrected the numerous bugs in the Win32 path splitter in DSO. 5494 Hopefully, we will not see any false combination of paths any more. 5495 [Richard Levitte] 5496 5497 Changes between 0.9.8 and 0.9.8a [11 Oct 2005] 5498 5499 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 5500 (part of SSL_OP_ALL). This option used to disable the 5501 countermeasure against man-in-the-middle protocol-version 5502 rollback in the SSL 2.0 server implementation, which is a bad 5503 idea. (CVE-2005-2969) 5504 5505 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 5506 for Information Security, National Institute of Advanced Industrial 5507 Science and Technology [AIST], Japan)] 5508 5509 *) Add two function to clear and return the verify parameter flags. 5510 [Steve Henson] 5511 5512 *) Keep cipherlists sorted in the source instead of sorting them at 5513 runtime, thus removing the need for a lock. 5514 [Nils Larsch] 5515 5516 *) Avoid some small subgroup attacks in Diffie-Hellman. 5517 [Nick Mathewson and Ben Laurie] 5518 5519 *) Add functions for well-known primes. 5520 [Nick Mathewson] 5521 5522 *) Extended Windows CE support. 5523 [Satoshi Nakamura and Andy Polyakov] 5524 5525 *) Initialize SSL_METHOD structures at compile time instead of during 5526 runtime, thus removing the need for a lock. 5527 [Steve Henson] 5528 5529 *) Make PKCS7_decrypt() work even if no certificate is supplied by 5530 attempting to decrypt each encrypted key in turn. Add support to 5531 smime utility. 5532 [Steve Henson] 5533 5534 Changes between 0.9.7h and 0.9.8 [05 Jul 2005] 5535 5536 [NB: OpenSSL 0.9.7i and later 0.9.7 patch levels were released after 5537 OpenSSL 0.9.8.] 5538 5539 *) Add libcrypto.pc and libssl.pc for those who feel they need them. 5540 [Richard Levitte] 5541 5542 *) Change CA.sh and CA.pl so they don't bundle the CSR and the private 5543 key into the same file any more. 5544 [Richard Levitte] 5545 5546 *) Add initial support for Win64, both IA64 and AMD64/x64 flavors. 5547 [Andy Polyakov] 5548 5549 *) Add -utf8 command line and config file option to 'ca'. 5550 [Stefan <stf@udoma.org] 5551 5552 *) Removed the macro des_crypt(), as it seems to conflict with some 5553 libraries. Use DES_crypt(). 5554 [Richard Levitte] 5555 5556 *) Correct naming of the 'chil' and '4758cca' ENGINEs. This 5557 involves renaming the source and generated shared-libs for 5558 both. The engines will accept the corrected or legacy ids 5559 ('ncipher' and '4758_cca' respectively) when binding. NB, 5560 this only applies when building 'shared'. 5561 [Corinna Vinschen <vinschen@redhat.com> and Geoff Thorpe] 5562 5563 *) Add attribute functions to EVP_PKEY structure. Modify 5564 PKCS12_create() to recognize a CSP name attribute and 5565 use it. Make -CSP option work again in pkcs12 utility. 5566 [Steve Henson] 5567 5568 *) Add new functionality to the bn blinding code: 5569 - automatic re-creation of the BN_BLINDING parameters after 5570 a fixed number of uses (currently 32) 5571 - add new function for parameter creation 5572 - introduce flags to control the update behaviour of the 5573 BN_BLINDING parameters 5574 - hide BN_BLINDING structure 5575 Add a second BN_BLINDING slot to the RSA structure to improve 5576 performance when a single RSA object is shared among several 5577 threads. 5578 [Nils Larsch] 5579 5580 *) Add support for DTLS. 5581 [Nagendra Modadugu <nagendra@cs.stanford.edu> and Ben Laurie] 5582 5583 *) Add support for DER encoded private keys (SSL_FILETYPE_ASN1) 5584 to SSL_CTX_use_PrivateKey_file() and SSL_use_PrivateKey_file() 5585 [Walter Goulet] 5586 5587 *) Remove buggy and incomplete DH cert support from 5588 ssl/ssl_rsa.c and ssl/s3_both.c 5589 [Nils Larsch] 5590 5591 *) Use SHA-1 instead of MD5 as the default digest algorithm for 5592 the apps/openssl applications. 5593 [Nils Larsch] 5594 5595 *) Compile clean with "-Wall -Wmissing-prototypes 5596 -Wstrict-prototypes -Wmissing-declarations -Werror". Currently 5597 DEBUG_SAFESTACK must also be set. 5598 [Ben Laurie] 5599 5600 *) Change ./Configure so that certain algorithms can be disabled by default. 5601 The new counterpiece to "no-xxx" is "enable-xxx". 5602 5603 The patented RC5 and MDC2 algorithms will now be disabled unless 5604 "enable-rc5" and "enable-mdc2", respectively, are specified. 5605 5606 (IDEA remains enabled despite being patented. This is because IDEA 5607 is frequently required for interoperability, and there is no license 5608 fee for non-commercial use. As before, "no-idea" can be used to 5609 avoid this algorithm.) 5610 5611 [Bodo Moeller] 5612 5613 *) Add processing of proxy certificates (see RFC 3820). This work was 5614 sponsored by KTH (The Royal Institute of Technology in Stockholm) and 5615 EGEE (Enabling Grids for E-science in Europe). 5616 [Richard Levitte] 5617 5618 *) RC4 performance overhaul on modern architectures/implementations, such 5619 as Intel P4, IA-64 and AMD64. 5620 [Andy Polyakov] 5621 5622 *) New utility extract-section.pl. This can be used specify an alternative 5623 section number in a pod file instead of having to treat each file as 5624 a separate case in Makefile. This can be done by adding two lines to the 5625 pod file: 5626 5627 =for comment openssl_section:XXX 5628 5629 The blank line is mandatory. 5630 5631 [Steve Henson] 5632 5633 *) New arguments -certform, -keyform and -pass for s_client and s_server 5634 to allow alternative format key and certificate files and passphrase 5635 sources. 5636 [Steve Henson] 5637 5638 *) New structure X509_VERIFY_PARAM which combines current verify parameters, 5639 update associated structures and add various utility functions. 5640 5641 Add new policy related verify parameters, include policy checking in 5642 standard verify code. Enhance 'smime' application with extra parameters 5643 to support policy checking and print out. 5644 [Steve Henson] 5645 5646 *) Add a new engine to support VIA PadLock ACE extensions in the VIA C3 5647 Nehemiah processors. These extensions support AES encryption in hardware 5648 as well as RNG (though RNG support is currently disabled). 5649 [Michal Ludvig <michal@logix.cz>, with help from Andy Polyakov] 5650 5651 *) Deprecate BN_[get|set]_params() functions (they were ignored internally). 5652 [Geoff Thorpe] 5653 5654 *) New FIPS 180-2 algorithms, SHA-224/-256/-384/-512 are implemented. 5655 [Andy Polyakov and a number of other people] 5656 5657 *) Improved PowerPC platform support. Most notably BIGNUM assembler 5658 implementation contributed by IBM. 5659 [Suresh Chari, Peter Waltenberg, Andy Polyakov] 5660 5661 *) The new 'RSA_generate_key_ex' function now takes a BIGNUM for the public 5662 exponent rather than 'unsigned long'. There is a corresponding change to 5663 the new 'rsa_keygen' element of the RSA_METHOD structure. 5664 [Jelte Jansen, Geoff Thorpe] 5665 5666 *) Functionality for creating the initial serial number file is now 5667 moved from CA.pl to the 'ca' utility with a new option -create_serial. 5668 5669 (Before OpenSSL 0.9.7e, CA.pl used to initialize the serial 5670 number file to 1, which is bound to cause problems. To avoid 5671 the problems while respecting compatibility between different 0.9.7 5672 patchlevels, 0.9.7e employed 'openssl x509 -next_serial' in 5673 CA.pl for serial number initialization. With the new release 0.9.8, 5674 we can fix the problem directly in the 'ca' utility.) 5675 [Steve Henson] 5676 5677 *) Reduced header interdependencies by declaring more opaque objects in 5678 ossl_typ.h. As a consequence, including some headers (eg. engine.h) will 5679 give fewer recursive includes, which could break lazy source code - so 5680 this change is covered by the OPENSSL_NO_DEPRECATED symbol. As always, 5681 developers should define this symbol when building and using openssl to 5682 ensure they track the recommended behaviour, interfaces, [etc], but 5683 backwards-compatible behaviour prevails when this isn't defined. 5684 [Geoff Thorpe] 5685 5686 *) New function X509_POLICY_NODE_print() which prints out policy nodes. 5687 [Steve Henson] 5688 5689 *) Add new EVP function EVP_CIPHER_CTX_rand_key and associated functionality. 5690 This will generate a random key of the appropriate length based on the 5691 cipher context. The EVP_CIPHER can provide its own random key generation 5692 routine to support keys of a specific form. This is used in the des and 5693 3des routines to generate a key of the correct parity. Update S/MIME 5694 code to use new functions and hence generate correct parity DES keys. 5695 Add EVP_CHECK_DES_KEY #define to return an error if the key is not 5696 valid (weak or incorrect parity). 5697 [Steve Henson] 5698 5699 *) Add a local set of CRLs that can be used by X509_verify_cert() as well 5700 as looking them up. This is useful when the verified structure may contain 5701 CRLs, for example PKCS#7 signedData. Modify PKCS7_verify() to use any CRLs 5702 present unless the new PKCS7_NO_CRL flag is asserted. 5703 [Steve Henson] 5704 5705 *) Extend ASN1 oid configuration module. It now additionally accepts the 5706 syntax: 5707 5708 shortName = some long name, 1.2.3.4 5709 [Steve Henson] 5710 5711 *) Reimplemented the BN_CTX implementation. There is now no more static 5712 limitation on the number of variables it can handle nor the depth of the 5713 "stack" handling for BN_CTX_start()/BN_CTX_end() pairs. The stack 5714 information can now expand as required, and rather than having a single 5715 static array of bignums, BN_CTX now uses a linked-list of such arrays 5716 allowing it to expand on demand whilst maintaining the usefulness of 5717 BN_CTX's "bundling". 5718 [Geoff Thorpe] 5719 5720 *) Add a missing BN_CTX parameter to the 'rsa_mod_exp' callback in RSA_METHOD 5721 to allow all RSA operations to function using a single BN_CTX. 5722 [Geoff Thorpe] 5723 5724 *) Preliminary support for certificate policy evaluation and checking. This 5725 is initially intended to pass the tests outlined in "Conformance Testing 5726 of Relying Party Client Certificate Path Processing Logic" v1.07. 5727 [Steve Henson] 5728 5729 *) bn_dup_expand() has been deprecated, it was introduced in 0.9.7 and 5730 remained unused and not that useful. A variety of other little bignum 5731 tweaks and fixes have also been made continuing on from the audit (see 5732 below). 5733 [Geoff Thorpe] 5734 5735 *) Constify all or almost all d2i, c2i, s2i and r2i functions, along with 5736 associated ASN1, EVP and SSL functions and old ASN1 macros. 5737 [Richard Levitte] 5738 5739 *) BN_zero() only needs to set 'top' and 'neg' to zero for correct results, 5740 and this should never fail. So the return value from the use of 5741 BN_set_word() (which can fail due to needless expansion) is now deprecated; 5742 if OPENSSL_NO_DEPRECATED is defined, BN_zero() is a void macro. 5743 [Geoff Thorpe] 5744 5745 *) BN_CTX_get() should return zero-valued bignums, providing the same 5746 initialised value as BN_new(). 5747 [Geoff Thorpe, suggested by Ulf Möller] 5748 5749 *) Support for inhibitAnyPolicy certificate extension. 5750 [Steve Henson] 5751 5752 *) An audit of the BIGNUM code is underway, for which debugging code is 5753 enabled when BN_DEBUG is defined. This makes stricter enforcements on what 5754 is considered valid when processing BIGNUMs, and causes execution to 5755 assert() when a problem is discovered. If BN_DEBUG_RAND is defined, 5756 further steps are taken to deliberately pollute unused data in BIGNUM 5757 structures to try and expose faulty code further on. For now, openssl will 5758 (in its default mode of operation) continue to tolerate the inconsistent 5759 forms that it has tolerated in the past, but authors and packagers should 5760 consider trying openssl and their own applications when compiled with 5761 these debugging symbols defined. It will help highlight potential bugs in 5762 their own code, and will improve the test coverage for OpenSSL itself. At 5763 some point, these tighter rules will become openssl's default to improve 5764 maintainability, though the assert()s and other overheads will remain only 5765 in debugging configurations. See bn.h for more details. 5766 [Geoff Thorpe, Nils Larsch, Ulf Möller] 5767 5768 *) BN_CTX_init() has been deprecated, as BN_CTX is an opaque structure 5769 that can only be obtained through BN_CTX_new() (which implicitly 5770 initialises it). The presence of this function only made it possible 5771 to overwrite an existing structure (and cause memory leaks). 5772 [Geoff Thorpe] 5773 5774 *) Because of the callback-based approach for implementing LHASH as a 5775 template type, lh_insert() adds opaque objects to hash-tables and 5776 lh_doall() or lh_doall_arg() are typically used with a destructor callback 5777 to clean up those corresponding objects before destroying the hash table 5778 (and losing the object pointers). So some over-zealous constifications in 5779 LHASH have been relaxed so that lh_insert() does not take (nor store) the 5780 objects as "const" and the lh_doall[_arg] callback wrappers are not 5781 prototyped to have "const" restrictions on the object pointers they are 5782 given (and so aren't required to cast them away any more). 5783 [Geoff Thorpe] 5784 5785 *) The tmdiff.h API was so ugly and minimal that our own timing utility 5786 (speed) prefers to use its own implementation. The two implementations 5787 haven't been consolidated as yet (volunteers?) but the tmdiff API has had 5788 its object type properly exposed (MS_TM) instead of casting to/from "char 5789 *". This may still change yet if someone realises MS_TM and "ms_time_***" 5790 aren't necessarily the greatest nomenclatures - but this is what was used 5791 internally to the implementation so I've used that for now. 5792 [Geoff Thorpe] 5793 5794 *) Ensure that deprecated functions do not get compiled when 5795 OPENSSL_NO_DEPRECATED is defined. Some "openssl" subcommands and a few of 5796 the self-tests were still using deprecated key-generation functions so 5797 these have been updated also. 5798 [Geoff Thorpe] 5799 5800 *) Reorganise PKCS#7 code to separate the digest location functionality 5801 into PKCS7_find_digest(), digest addition into PKCS7_bio_add_digest(). 5802 New function PKCS7_set_digest() to set the digest type for PKCS#7 5803 digestedData type. Add additional code to correctly generate the 5804 digestedData type and add support for this type in PKCS7 initialization 5805 functions. 5806 [Steve Henson] 5807 5808 *) New function PKCS7_set0_type_other() this initializes a PKCS7 5809 structure of type "other". 5810 [Steve Henson] 5811 5812 *) Fix prime generation loop in crypto/bn/bn_prime.pl by making 5813 sure the loop does correctly stop and breaking ("division by zero") 5814 modulus operations are not performed. The (pre-generated) prime 5815 table crypto/bn/bn_prime.h was already correct, but it could not be 5816 re-generated on some platforms because of the "division by zero" 5817 situation in the script. 5818 [Ralf S. Engelschall] 5819 5820 *) Update support for ECC-based TLS ciphersuites according to 5821 draft-ietf-tls-ecc-03.txt: the KDF1 key derivation function with 5822 SHA-1 now is only used for "small" curves (where the 5823 representation of a field element takes up to 24 bytes); for 5824 larger curves, the field element resulting from ECDH is directly 5825 used as premaster secret. 5826 [Douglas Stebila (Sun Microsystems Laboratories)] 5827 5828 *) Add code for kP+lQ timings to crypto/ec/ectest.c, and add SEC2 5829 curve secp160r1 to the tests. 5830 [Douglas Stebila (Sun Microsystems Laboratories)] 5831 5832 *) Add the possibility to load symbols globally with DSO. 5833 [Götz Babin-Ebell <babin-ebell@trustcenter.de> via Richard Levitte] 5834 5835 *) Add the functions ERR_set_mark() and ERR_pop_to_mark() for better 5836 control of the error stack. 5837 [Richard Levitte] 5838 5839 *) Add support for STORE in ENGINE. 5840 [Richard Levitte] 5841 5842 *) Add the STORE type. The intention is to provide a common interface 5843 to certificate and key stores, be they simple file-based stores, or 5844 HSM-type store, or LDAP stores, or... 5845 NOTE: The code is currently UNTESTED and isn't really used anywhere. 5846 [Richard Levitte] 5847 5848 *) Add a generic structure called OPENSSL_ITEM. This can be used to 5849 pass a list of arguments to any function as well as provide a way 5850 for a function to pass data back to the caller. 5851 [Richard Levitte] 5852 5853 *) Add the functions BUF_strndup() and BUF_memdup(). BUF_strndup() 5854 works like BUF_strdup() but can be used to duplicate a portion of 5855 a string. The copy gets NUL-terminated. BUF_memdup() duplicates 5856 a memory area. 5857 [Richard Levitte] 5858 5859 *) Add the function sk_find_ex() which works like sk_find(), but will 5860 return an index to an element even if an exact match couldn't be 5861 found. The index is guaranteed to point at the element where the 5862 searched-for key would be inserted to preserve sorting order. 5863 [Richard Levitte] 5864 5865 *) Add the function OBJ_bsearch_ex() which works like OBJ_bsearch() but 5866 takes an extra flags argument for optional functionality. Currently, 5867 the following flags are defined: 5868 5869 OBJ_BSEARCH_VALUE_ON_NOMATCH 5870 This one gets OBJ_bsearch_ex() to return a pointer to the first 5871 element where the comparing function returns a negative or zero 5872 number. 5873 5874 OBJ_BSEARCH_FIRST_VALUE_ON_MATCH 5875 This one gets OBJ_bsearch_ex() to return a pointer to the first 5876 element where the comparing function returns zero. This is useful 5877 if there are more than one element where the comparing function 5878 returns zero. 5879 [Richard Levitte] 5880 5881 *) Make it possible to create self-signed certificates with 'openssl ca' 5882 in such a way that the self-signed certificate becomes part of the 5883 CA database and uses the same mechanisms for serial number generation 5884 as all other certificate signing. The new flag '-selfsign' enables 5885 this functionality. Adapt CA.sh and CA.pl.in. 5886 [Richard Levitte] 5887 5888 *) Add functionality to check the public key of a certificate request 5889 against a given private. This is useful to check that a certificate 5890 request can be signed by that key (self-signing). 5891 [Richard Levitte] 5892 5893 *) Make it possible to have multiple active certificates with the same 5894 subject in the CA index file. This is done only if the keyword 5895 'unique_subject' is set to 'no' in the main CA section (default 5896 if 'CA_default') of the configuration file. The value is saved 5897 with the database itself in a separate index attribute file, 5898 named like the index file with '.attr' appended to the name. 5899 [Richard Levitte] 5900 5901 *) Generate multi-valued AVAs using '+' notation in config files for 5902 req and dirName. 5903 [Steve Henson] 5904 5905 *) Support for nameConstraints certificate extension. 5906 [Steve Henson] 5907 5908 *) Support for policyConstraints certificate extension. 5909 [Steve Henson] 5910 5911 *) Support for policyMappings certificate extension. 5912 [Steve Henson] 5913 5914 *) Make sure the default DSA_METHOD implementation only uses its 5915 dsa_mod_exp() and/or bn_mod_exp() handlers if they are non-NULL, 5916 and change its own handlers to be NULL so as to remove unnecessary 5917 indirection. This lets alternative implementations fallback to the 5918 default implementation more easily. 5919 [Geoff Thorpe] 5920 5921 *) Support for directoryName in GeneralName related extensions 5922 in config files. 5923 [Steve Henson] 5924 5925 *) Make it possible to link applications using Makefile.shared. 5926 Make that possible even when linking against static libraries! 5927 [Richard Levitte] 5928 5929 *) Support for single pass processing for S/MIME signing. This now 5930 means that S/MIME signing can be done from a pipe, in addition 5931 cleartext signing (multipart/signed type) is effectively streaming 5932 and the signed data does not need to be all held in memory. 5933 5934 This is done with a new flag PKCS7_STREAM. When this flag is set 5935 PKCS7_sign() only initializes the PKCS7 structure and the actual signing 5936 is done after the data is output (and digests calculated) in 5937 SMIME_write_PKCS7(). 5938 [Steve Henson] 5939 5940 *) Add full support for -rpath/-R, both in shared libraries and 5941 applications, at least on the platforms where it's known how 5942 to do it. 5943 [Richard Levitte] 5944 5945 *) In crypto/ec/ec_mult.c, implement fast point multiplication with 5946 precomputation, based on wNAF splitting: EC_GROUP_precompute_mult() 5947 will now compute a table of multiples of the generator that 5948 makes subsequent invocations of EC_POINTs_mul() or EC_POINT_mul() 5949 faster (notably in the case of a single point multiplication, 5950 scalar * generator). 5951 [Nils Larsch, Bodo Moeller] 5952 5953 *) IPv6 support for certificate extensions. The various extensions 5954 which use the IP:a.b.c.d can now take IPv6 addresses using the 5955 formats of RFC1884 2.2 . IPv6 addresses are now also displayed 5956 correctly. 5957 [Steve Henson] 5958 5959 *) Added an ENGINE that implements RSA by performing private key 5960 exponentiations with the GMP library. The conversions to and from 5961 GMP's mpz_t format aren't optimised nor are any montgomery forms 5962 cached, and on x86 it appears OpenSSL's own performance has caught up. 5963 However there are likely to be other architectures where GMP could 5964 provide a boost. This ENGINE is not built in by default, but it can be 5965 specified at Configure time and should be accompanied by the necessary 5966 linker additions, eg; 5967 ./config -DOPENSSL_USE_GMP -lgmp 5968 [Geoff Thorpe] 5969 5970 *) "openssl engine" will not display ENGINE/DSO load failure errors when 5971 testing availability of engines with "-t" - the old behaviour is 5972 produced by increasing the feature's verbosity with "-tt". 5973 [Geoff Thorpe] 5974 5975 *) ECDSA routines: under certain error conditions uninitialized BN objects 5976 could be freed. Solution: make sure initialization is performed early 5977 enough. (Reported and fix supplied by Nils Larsch <nla@trustcenter.de> 5978 via PR#459) 5979 [Lutz Jaenicke] 5980 5981 *) Key-generation can now be implemented in RSA_METHOD, DSA_METHOD 5982 and DH_METHOD (eg. by ENGINE implementations) to override the normal 5983 software implementations. For DSA and DH, parameter generation can 5984 also be overridden by providing the appropriate method callbacks. 5985 [Geoff Thorpe] 5986 5987 *) Change the "progress" mechanism used in key-generation and 5988 primality testing to functions that take a new BN_GENCB pointer in 5989 place of callback/argument pairs. The new API functions have "_ex" 5990 postfixes and the older functions are reimplemented as wrappers for 5991 the new ones. The OPENSSL_NO_DEPRECATED symbol can be used to hide 5992 declarations of the old functions to help (graceful) attempts to 5993 migrate to the new functions. Also, the new key-generation API 5994 functions operate on a caller-supplied key-structure and return 5995 success/failure rather than returning a key or NULL - this is to 5996 help make "keygen" another member function of RSA_METHOD etc. 5997 5998 Example for using the new callback interface: 5999 6000 int (*my_callback)(int a, int b, BN_GENCB *cb) = ...; 6001 void *my_arg = ...; 6002 BN_GENCB my_cb; 6003 6004 BN_GENCB_set(&my_cb, my_callback, my_arg); 6005 6006 return BN_is_prime_ex(some_bignum, BN_prime_checks, NULL, &cb); 6007 /* For the meaning of a, b in calls to my_callback(), see the 6008 * documentation of the function that calls the callback. 6009 * cb will point to my_cb; my_arg can be retrieved as cb->arg. 6010 * my_callback should return 1 if it wants BN_is_prime_ex() 6011 * to continue, or 0 to stop. 6012 */ 6013 6014 [Geoff Thorpe] 6015 6016 *) Change the ZLIB compression method to be stateful, and make it 6017 available to TLS with the number defined in 6018 draft-ietf-tls-compression-04.txt. 6019 [Richard Levitte] 6020 6021 *) Add the ASN.1 structures and functions for CertificatePair, which 6022 is defined as follows (according to X.509_4thEditionDraftV6.pdf): 6023 6024 CertificatePair ::= SEQUENCE { 6025 forward [0] Certificate OPTIONAL, 6026 reverse [1] Certificate OPTIONAL, 6027 -- at least one of the pair shall be present -- } 6028 6029 Also implement the PEM functions to read and write certificate 6030 pairs, and defined the PEM tag as "CERTIFICATE PAIR". 6031 6032 This needed to be defined, mostly for the sake of the LDAP 6033 attribute crossCertificatePair, but may prove useful elsewhere as 6034 well. 6035 [Richard Levitte] 6036 6037 *) Make it possible to inhibit symlinking of shared libraries in 6038 Makefile.shared, for Cygwin's sake. 6039 [Richard Levitte] 6040 6041 *) Extend the BIGNUM API by creating a function 6042 void BN_set_negative(BIGNUM *a, int neg); 6043 and a macro that behave like 6044 int BN_is_negative(const BIGNUM *a); 6045 6046 to avoid the need to access 'a->neg' directly in applications. 6047 [Nils Larsch] 6048 6049 *) Implement fast modular reduction for pseudo-Mersenne primes 6050 used in NIST curves (crypto/bn/bn_nist.c, crypto/ec/ecp_nist.c). 6051 EC_GROUP_new_curve_GFp() will now automatically use this 6052 if applicable. 6053 [Nils Larsch <nla@trustcenter.de>] 6054 6055 *) Add new lock type (CRYPTO_LOCK_BN). 6056 [Bodo Moeller] 6057 6058 *) Change the ENGINE framework to automatically load engines 6059 dynamically from specific directories unless they could be 6060 found to already be built in or loaded. Move all the 6061 current engines except for the cryptodev one to a new 6062 directory engines/. 6063 The engines in engines/ are built as shared libraries if 6064 the "shared" options was given to ./Configure or ./config. 6065 Otherwise, they are inserted in libcrypto.a. 6066 /usr/local/ssl/engines is the default directory for dynamic 6067 engines, but that can be overridden at configure time through 6068 the usual use of --prefix and/or --openssldir, and at run 6069 time with the environment variable OPENSSL_ENGINES. 6070 [Geoff Thorpe and Richard Levitte] 6071 6072 *) Add Makefile.shared, a helper makefile to build shared 6073 libraries. Adapt Makefile.org. 6074 [Richard Levitte] 6075 6076 *) Add version info to Win32 DLLs. 6077 [Peter 'Luna' Runestig" <peter@runestig.com>] 6078 6079 *) Add new 'medium level' PKCS#12 API. Certificates and keys 6080 can be added using this API to created arbitrary PKCS#12 6081 files while avoiding the low level API. 6082 6083 New options to PKCS12_create(), key or cert can be NULL and 6084 will then be omitted from the output file. The encryption 6085 algorithm NIDs can be set to -1 for no encryption, the mac 6086 iteration count can be set to 0 to omit the mac. 6087 6088 Enhance pkcs12 utility by making the -nokeys and -nocerts 6089 options work when creating a PKCS#12 file. New option -nomac 6090 to omit the mac, NONE can be set for an encryption algorithm. 6091 New code is modified to use the enhanced PKCS12_create() 6092 instead of the low level API. 6093 [Steve Henson] 6094 6095 *) Extend ASN1 encoder to support indefinite length constructed 6096 encoding. This can output sequences tags and octet strings in 6097 this form. Modify pk7_asn1.c to support indefinite length 6098 encoding. This is experimental and needs additional code to 6099 be useful, such as an ASN1 bio and some enhanced streaming 6100 PKCS#7 code. 6101 6102 Extend template encode functionality so that tagging is passed 6103 down to the template encoder. 6104 [Steve Henson] 6105 6106 *) Let 'openssl req' fail if an argument to '-newkey' is not 6107 recognized instead of using RSA as a default. 6108 [Bodo Moeller] 6109 6110 *) Add support for ECC-based ciphersuites from draft-ietf-tls-ecc-01.txt. 6111 As these are not official, they are not included in "ALL"; 6112 the "ECCdraft" ciphersuite group alias can be used to select them. 6113 [Vipul Gupta and Sumit Gupta (Sun Microsystems Laboratories)] 6114 6115 *) Add ECDH engine support. 6116 [Nils Gura and Douglas Stebila (Sun Microsystems Laboratories)] 6117 6118 *) Add ECDH in new directory crypto/ecdh/. 6119 [Douglas Stebila (Sun Microsystems Laboratories)] 6120 6121 *) Let BN_rand_range() abort with an error after 100 iterations 6122 without success (which indicates a broken PRNG). 6123 [Bodo Moeller] 6124 6125 *) Change BN_mod_sqrt() so that it verifies that the input value 6126 is really the square of the return value. (Previously, 6127 BN_mod_sqrt would show GIGO behaviour.) 6128 [Bodo Moeller] 6129 6130 *) Add named elliptic curves over binary fields from X9.62, SECG, 6131 and WAP/WTLS; add OIDs that were still missing. 6132 6133 [Sheueling Chang Shantz and Douglas Stebila 6134 (Sun Microsystems Laboratories)] 6135 6136 *) Extend the EC library for elliptic curves over binary fields 6137 (new files ec2_smpl.c, ec2_smpt.c, ec2_mult.c in crypto/ec/). 6138 New EC_METHOD: 6139 6140 EC_GF2m_simple_method 6141 6142 New API functions: 6143 6144 EC_GROUP_new_curve_GF2m 6145 EC_GROUP_set_curve_GF2m 6146 EC_GROUP_get_curve_GF2m 6147 EC_POINT_set_affine_coordinates_GF2m 6148 EC_POINT_get_affine_coordinates_GF2m 6149 EC_POINT_set_compressed_coordinates_GF2m 6150 6151 Point compression for binary fields is disabled by default for 6152 patent reasons (compile with OPENSSL_EC_BIN_PT_COMP defined to 6153 enable it). 6154 6155 As binary polynomials are represented as BIGNUMs, various members 6156 of the EC_GROUP and EC_POINT data structures can be shared 6157 between the implementations for prime fields and binary fields; 6158 the above ..._GF2m functions (except for EX_GROUP_new_curve_GF2m) 6159 are essentially identical to their ..._GFp counterparts. 6160 (For simplicity, the '..._GFp' prefix has been dropped from 6161 various internal method names.) 6162 6163 An internal 'field_div' method (similar to 'field_mul' and 6164 'field_sqr') has been added; this is used only for binary fields. 6165 6166 [Sheueling Chang Shantz and Douglas Stebila 6167 (Sun Microsystems Laboratories)] 6168 6169 *) Optionally dispatch EC_POINT_mul(), EC_POINT_precompute_mult() 6170 through methods ('mul', 'precompute_mult'). 6171 6172 The generic implementations (now internally called 'ec_wNAF_mul' 6173 and 'ec_wNAF_precomputed_mult') remain the default if these 6174 methods are undefined. 6175 6176 [Sheueling Chang Shantz and Douglas Stebila 6177 (Sun Microsystems Laboratories)] 6178 6179 *) New function EC_GROUP_get_degree, which is defined through 6180 EC_METHOD. For curves over prime fields, this returns the bit 6181 length of the modulus. 6182 6183 [Sheueling Chang Shantz and Douglas Stebila 6184 (Sun Microsystems Laboratories)] 6185 6186 *) New functions EC_GROUP_dup, EC_POINT_dup. 6187 (These simply call ..._new and ..._copy). 6188 6189 [Sheueling Chang Shantz and Douglas Stebila 6190 (Sun Microsystems Laboratories)] 6191 6192 *) Add binary polynomial arithmetic software in crypto/bn/bn_gf2m.c. 6193 Polynomials are represented as BIGNUMs (where the sign bit is not 6194 used) in the following functions [macros]: 6195 6196 BN_GF2m_add 6197 BN_GF2m_sub [= BN_GF2m_add] 6198 BN_GF2m_mod [wrapper for BN_GF2m_mod_arr] 6199 BN_GF2m_mod_mul [wrapper for BN_GF2m_mod_mul_arr] 6200 BN_GF2m_mod_sqr [wrapper for BN_GF2m_mod_sqr_arr] 6201 BN_GF2m_mod_inv 6202 BN_GF2m_mod_exp [wrapper for BN_GF2m_mod_exp_arr] 6203 BN_GF2m_mod_sqrt [wrapper for BN_GF2m_mod_sqrt_arr] 6204 BN_GF2m_mod_solve_quad [wrapper for BN_GF2m_mod_solve_quad_arr] 6205 BN_GF2m_cmp [= BN_ucmp] 6206 6207 (Note that only the 'mod' functions are actually for fields GF(2^m). 6208 BN_GF2m_add() is misnomer, but this is for the sake of consistency.) 6209 6210 For some functions, an the irreducible polynomial defining a 6211 field can be given as an 'unsigned int[]' with strictly 6212 decreasing elements giving the indices of those bits that are set; 6213 i.e., p[] represents the polynomial 6214 f(t) = t^p[0] + t^p[1] + ... + t^p[k] 6215 where 6216 p[0] > p[1] > ... > p[k] = 0. 6217 This applies to the following functions: 6218 6219 BN_GF2m_mod_arr 6220 BN_GF2m_mod_mul_arr 6221 BN_GF2m_mod_sqr_arr 6222 BN_GF2m_mod_inv_arr [wrapper for BN_GF2m_mod_inv] 6223 BN_GF2m_mod_div_arr [wrapper for BN_GF2m_mod_div] 6224 BN_GF2m_mod_exp_arr 6225 BN_GF2m_mod_sqrt_arr 6226 BN_GF2m_mod_solve_quad_arr 6227 BN_GF2m_poly2arr 6228 BN_GF2m_arr2poly 6229 6230 Conversion can be performed by the following functions: 6231 6232 BN_GF2m_poly2arr 6233 BN_GF2m_arr2poly 6234 6235 bntest.c has additional tests for binary polynomial arithmetic. 6236 6237 Two implementations for BN_GF2m_mod_div() are available. 6238 The default algorithm simply uses BN_GF2m_mod_inv() and 6239 BN_GF2m_mod_mul(). The alternative algorithm is compiled in only 6240 if OPENSSL_SUN_GF2M_DIV is defined (patent pending; read the 6241 copyright notice in crypto/bn/bn_gf2m.c before enabling it). 6242 6243 [Sheueling Chang Shantz and Douglas Stebila 6244 (Sun Microsystems Laboratories)] 6245 6246 *) Add new error code 'ERR_R_DISABLED' that can be used when some 6247 functionality is disabled at compile-time. 6248 [Douglas Stebila <douglas.stebila@sun.com>] 6249 6250 *) Change default behaviour of 'openssl asn1parse' so that more 6251 information is visible when viewing, e.g., a certificate: 6252 6253 Modify asn1_parse2 (crypto/asn1/asn1_par.c) so that in non-'dump' 6254 mode the content of non-printable OCTET STRINGs is output in a 6255 style similar to INTEGERs, but with '[HEX DUMP]' prepended to 6256 avoid the appearance of a printable string. 6257 [Nils Larsch <nla@trustcenter.de>] 6258 6259 *) Add 'asn1_flag' and 'asn1_form' member to EC_GROUP with access 6260 functions 6261 EC_GROUP_set_asn1_flag() 6262 EC_GROUP_get_asn1_flag() 6263 EC_GROUP_set_point_conversion_form() 6264 EC_GROUP_get_point_conversion_form() 6265 These control ASN1 encoding details: 6266 - Curves (i.e., groups) are encoded explicitly unless asn1_flag 6267 has been set to OPENSSL_EC_NAMED_CURVE. 6268 - Points are encoded in uncompressed form by default; options for 6269 asn1_for are as for point2oct, namely 6270 POINT_CONVERSION_COMPRESSED 6271 POINT_CONVERSION_UNCOMPRESSED 6272 POINT_CONVERSION_HYBRID 6273 6274 Also add 'seed' and 'seed_len' members to EC_GROUP with access 6275 functions 6276 EC_GROUP_set_seed() 6277 EC_GROUP_get0_seed() 6278 EC_GROUP_get_seed_len() 6279 This is used only for ASN1 purposes (so far). 6280 [Nils Larsch <nla@trustcenter.de>] 6281 6282 *) Add 'field_type' member to EC_METHOD, which holds the NID 6283 of the appropriate field type OID. The new function 6284 EC_METHOD_get_field_type() returns this value. 6285 [Nils Larsch <nla@trustcenter.de>] 6286 6287 *) Add functions 6288 EC_POINT_point2bn() 6289 EC_POINT_bn2point() 6290 EC_POINT_point2hex() 6291 EC_POINT_hex2point() 6292 providing useful interfaces to EC_POINT_point2oct() and 6293 EC_POINT_oct2point(). 6294 [Nils Larsch <nla@trustcenter.de>] 6295 6296 *) Change internals of the EC library so that the functions 6297 EC_GROUP_set_generator() 6298 EC_GROUP_get_generator() 6299 EC_GROUP_get_order() 6300 EC_GROUP_get_cofactor() 6301 are implemented directly in crypto/ec/ec_lib.c and not dispatched 6302 to methods, which would lead to unnecessary code duplication when 6303 adding different types of curves. 6304 [Nils Larsch <nla@trustcenter.de> with input by Bodo Moeller] 6305 6306 *) Implement compute_wNAF (crypto/ec/ec_mult.c) without BIGNUM 6307 arithmetic, and such that modified wNAFs are generated 6308 (which avoid length expansion in many cases). 6309 [Bodo Moeller] 6310 6311 *) Add a function EC_GROUP_check_discriminant() (defined via 6312 EC_METHOD) that verifies that the curve discriminant is non-zero. 6313 6314 Add a function EC_GROUP_check() that makes some sanity tests 6315 on a EC_GROUP, its generator and order. This includes 6316 EC_GROUP_check_discriminant(). 6317 [Nils Larsch <nla@trustcenter.de>] 6318 6319 *) Add ECDSA in new directory crypto/ecdsa/. 6320 6321 Add applications 'openssl ecparam' and 'openssl ecdsa' 6322 (these are based on 'openssl dsaparam' and 'openssl dsa'). 6323 6324 ECDSA support is also included in various other files across the 6325 library. Most notably, 6326 - 'openssl req' now has a '-newkey ecdsa:file' option; 6327 - EVP_PKCS82PKEY (crypto/evp/evp_pkey.c) now can handle ECDSA; 6328 - X509_PUBKEY_get (crypto/asn1/x_pubkey.c) and 6329 d2i_PublicKey (crypto/asn1/d2i_pu.c) have been modified to make 6330 them suitable for ECDSA where domain parameters must be 6331 extracted before the specific public key; 6332 - ECDSA engine support has been added. 6333 [Nils Larsch <nla@trustcenter.de>] 6334 6335 *) Include some named elliptic curves, and add OIDs from X9.62, 6336 SECG, and WAP/WTLS. Each curve can be obtained from the new 6337 function 6338 EC_GROUP_new_by_curve_name(), 6339 and the list of available named curves can be obtained with 6340 EC_get_builtin_curves(). 6341 Also add a 'curve_name' member to EC_GROUP objects, which can be 6342 accessed via 6343 EC_GROUP_set_curve_name() 6344 EC_GROUP_get_curve_name() 6345 [Nils Larsch <larsch@trustcenter.de, Bodo Moeller] 6346 6347 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 6348 was actually never needed) and in BN_mul(). The removal in BN_mul() 6349 required a small change in bn_mul_part_recursive() and the addition 6350 of the functions bn_cmp_part_words(), bn_sub_part_words() and 6351 bn_add_part_words(), which do the same thing as bn_cmp_words(), 6352 bn_sub_words() and bn_add_words() except they take arrays with 6353 differing sizes. 6354 [Richard Levitte] 6355 6356 Changes between 0.9.7l and 0.9.7m [23 Feb 2007] 6357 6358 *) Cleanse PEM buffers before freeing them since they may contain 6359 sensitive data. 6360 [Benjamin Bennett <ben@psc.edu>] 6361 6362 *) Include "!eNULL" in SSL_DEFAULT_CIPHER_LIST to make sure that 6363 a ciphersuite string such as "DEFAULT:RSA" cannot enable 6364 authentication-only ciphersuites. 6365 [Bodo Moeller] 6366 6367 *) Since AES128 and AES256 share a single mask bit in the logic of 6368 ssl/ssl_ciph.c, the code for masking out disabled ciphers needs a 6369 kludge to work properly if AES128 is available and AES256 isn't. 6370 [Victor Duchovni] 6371 6372 *) Expand security boundary to match 1.1.1 module. 6373 [Steve Henson] 6374 6375 *) Remove redundant features: hash file source, editing of test vectors 6376 modify fipsld to use external fips_premain.c signature. 6377 [Steve Henson] 6378 6379 *) New perl script mkfipsscr.pl to create shell scripts or batch files to 6380 run algorithm test programs. 6381 [Steve Henson] 6382 6383 *) Make algorithm test programs more tolerant of whitespace. 6384 [Steve Henson] 6385 6386 *) Have SSL/TLS server implementation tolerate "mismatched" record 6387 protocol version while receiving ClientHello even if the 6388 ClientHello is fragmented. (The server can't insist on the 6389 particular protocol version it has chosen before the ServerHello 6390 message has informed the client about his choice.) 6391 [Bodo Moeller] 6392 6393 *) Load error codes if they are not already present instead of using a 6394 static variable. This allows them to be cleanly unloaded and reloaded. 6395 [Steve Henson] 6396 6397 Changes between 0.9.7k and 0.9.7l [28 Sep 2006] 6398 6399 *) Introduce limits to prevent malicious keys being able to 6400 cause a denial of service. (CVE-2006-2940) 6401 [Steve Henson, Bodo Moeller] 6402 6403 *) Fix ASN.1 parsing of certain invalid structures that can result 6404 in a denial of service. (CVE-2006-2937) [Steve Henson] 6405 6406 *) Fix buffer overflow in SSL_get_shared_ciphers() function. 6407 (CVE-2006-3738) [Tavis Ormandy and Will Drewry, Google Security Team] 6408 6409 *) Fix SSL client code which could crash if connecting to a 6410 malicious SSLv2 server. (CVE-2006-4343) 6411 [Tavis Ormandy and Will Drewry, Google Security Team] 6412 6413 *) Change ciphersuite string processing so that an explicit 6414 ciphersuite selects this one ciphersuite (so that "AES256-SHA" 6415 will no longer include "AES128-SHA"), and any other similar 6416 ciphersuite (same bitmap) from *other* protocol versions (so that 6417 "RC4-MD5" will still include both the SSL 2.0 ciphersuite and the 6418 SSL 3.0/TLS 1.0 ciphersuite). This is a backport combining 6419 changes from 0.9.8b and 0.9.8d. 6420 [Bodo Moeller] 6421 6422 Changes between 0.9.7j and 0.9.7k [05 Sep 2006] 6423 6424 *) Avoid PKCS #1 v1.5 signature attack discovered by Daniel Bleichenbacher 6425 (CVE-2006-4339) [Ben Laurie and Google Security Team] 6426 6427 *) Change the Unix randomness entropy gathering to use poll() when 6428 possible instead of select(), since the latter has some 6429 undesirable limitations. 6430 [Darryl Miles via Richard Levitte and Bodo Moeller] 6431 6432 *) Disable rogue ciphersuites: 6433 6434 - SSLv2 0x08 0x00 0x80 ("RC4-64-MD5") 6435 - SSLv3/TLSv1 0x00 0x61 ("EXP1024-RC2-CBC-MD5") 6436 - SSLv3/TLSv1 0x00 0x60 ("EXP1024-RC4-MD5") 6437 6438 The latter two were purportedly from 6439 draft-ietf-tls-56-bit-ciphersuites-0[01].txt, but do not really 6440 appear there. 6441 6442 Also deactivate the remaining ciphersuites from 6443 draft-ietf-tls-56-bit-ciphersuites-01.txt. These are just as 6444 unofficial, and the ID has long expired. 6445 [Bodo Moeller] 6446 6447 *) Fix RSA blinding Heisenbug (problems sometimes occurred on 6448 dual-core machines) and other potential thread-safety issues. 6449 [Bodo Moeller] 6450 6451 Changes between 0.9.7i and 0.9.7j [04 May 2006] 6452 6453 *) Adapt fipsld and the build system to link against the validated FIPS 6454 module in FIPS mode. 6455 [Steve Henson] 6456 6457 *) Fixes for VC++ 2005 build under Windows. 6458 [Steve Henson] 6459 6460 *) Add new Windows build target VC-32-GMAKE for VC++. This uses GNU make 6461 from a Windows bash shell such as MSYS. It is autodetected from the 6462 "config" script when run from a VC++ environment. Modify standard VC++ 6463 build to use fipscanister.o from the GNU make build. 6464 [Steve Henson] 6465 6466 Changes between 0.9.7h and 0.9.7i [14 Oct 2005] 6467 6468 *) Wrapped the definition of EVP_MAX_MD_SIZE in a #ifdef OPENSSL_FIPS. 6469 The value now differs depending on if you build for FIPS or not. 6470 BEWARE! A program linked with a shared FIPSed libcrypto can't be 6471 safely run with a non-FIPSed libcrypto, as it may crash because of 6472 the difference induced by this change. 6473 [Andy Polyakov] 6474 6475 Changes between 0.9.7g and 0.9.7h [11 Oct 2005] 6476 6477 *) Remove the functionality of SSL_OP_MSIE_SSLV2_RSA_PADDING 6478 (part of SSL_OP_ALL). This option used to disable the 6479 countermeasure against man-in-the-middle protocol-version 6480 rollback in the SSL 2.0 server implementation, which is a bad 6481 idea. (CVE-2005-2969) 6482 6483 [Bodo Moeller; problem pointed out by Yutaka Oiwa (Research Center 6484 for Information Security, National Institute of Advanced Industrial 6485 Science and Technology [AIST], Japan)] 6486 6487 *) Minimal support for X9.31 signatures and PSS padding modes. This is 6488 mainly for FIPS compliance and not fully integrated at this stage. 6489 [Steve Henson] 6490 6491 *) For DSA signing, unless DSA_FLAG_NO_EXP_CONSTTIME is set, perform 6492 the exponentiation using a fixed-length exponent. (Otherwise, 6493 the information leaked through timing could expose the secret key 6494 after many signatures; cf. Bleichenbacher's attack on DSA with 6495 biased k.) 6496 [Bodo Moeller] 6497 6498 *) Make a new fixed-window mod_exp implementation the default for 6499 RSA, DSA, and DH private-key operations so that the sequence of 6500 squares and multiplies and the memory access pattern are 6501 independent of the particular secret key. This will mitigate 6502 cache-timing and potential related attacks. 6503 6504 BN_mod_exp_mont_consttime() is the new exponentiation implementation, 6505 and this is automatically used by BN_mod_exp_mont() if the new flag 6506 BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH 6507 will use this BN flag for private exponents unless the flag 6508 RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or 6509 DH_FLAG_NO_EXP_CONSTTIME, respectively, is set. 6510 6511 [Matthew D Wood (Intel Corp), with some changes by Bodo Moeller] 6512 6513 *) Change the client implementation for SSLv23_method() and 6514 SSLv23_client_method() so that is uses the SSL 3.0/TLS 1.0 6515 Client Hello message format if the SSL_OP_NO_SSLv2 option is set. 6516 (Previously, the SSL 2.0 backwards compatible Client Hello 6517 message format would be used even with SSL_OP_NO_SSLv2.) 6518 [Bodo Moeller] 6519 6520 *) Add support for smime-type MIME parameter in S/MIME messages which some 6521 clients need. 6522 [Steve Henson] 6523 6524 *) New function BN_MONT_CTX_set_locked() to set montgomery parameters in 6525 a threadsafe manner. Modify rsa code to use new function and add calls 6526 to dsa and dh code (which had race conditions before). 6527 [Steve Henson] 6528 6529 *) Include the fixed error library code in the C error file definitions 6530 instead of fixing them up at runtime. This keeps the error code 6531 structures constant. 6532 [Steve Henson] 6533 6534 Changes between 0.9.7f and 0.9.7g [11 Apr 2005] 6535 6536 [NB: OpenSSL 0.9.7h and later 0.9.7 patch levels were released after 6537 OpenSSL 0.9.8.] 6538 6539 *) Fixes for newer kerberos headers. NB: the casts are needed because 6540 the 'length' field is signed on one version and unsigned on another 6541 with no (?) obvious way to tell the difference, without these VC++ 6542 complains. Also the "definition" of FAR (blank) is no longer included 6543 nor is the error ENOMEM. KRB5_PRIVATE has to be set to 1 to pick up 6544 some needed definitions. 6545 [Steve Henson] 6546 6547 *) Undo Cygwin change. 6548 [Ulf Möller] 6549 6550 *) Added support for proxy certificates according to RFC 3820. 6551 Because they may be a security thread to unaware applications, 6552 they must be explicitly allowed in run-time. See 6553 docs/HOWTO/proxy_certificates.txt for further information. 6554 [Richard Levitte] 6555 6556 Changes between 0.9.7e and 0.9.7f [22 Mar 2005] 6557 6558 *) Use (SSL_RANDOM_VALUE - 4) bytes of pseudo random data when generating 6559 server and client random values. Previously 6560 (SSL_RANDOM_VALUE - sizeof(time_t)) would be used which would result in 6561 less random data when sizeof(time_t) > 4 (some 64 bit platforms). 6562 6563 This change has negligible security impact because: 6564 6565 1. Server and client random values still have 24 bytes of pseudo random 6566 data. 6567 6568 2. Server and client random values are sent in the clear in the initial 6569 handshake. 6570 6571 3. The master secret is derived using the premaster secret (48 bytes in 6572 size for static RSA ciphersuites) as well as client server and random 6573 values. 6574 6575 The OpenSSL team would like to thank the UK NISCC for bringing this issue 6576 to our attention. 6577 6578 [Stephen Henson, reported by UK NISCC] 6579 6580 *) Use Windows randomness collection on Cygwin. 6581 [Ulf Möller] 6582 6583 *) Fix hang in EGD/PRNGD query when communication socket is closed 6584 prematurely by EGD/PRNGD. 6585 [Darren Tucker <dtucker@zip.com.au> via Lutz Jänicke, resolves #1014] 6586 6587 *) Prompt for pass phrases when appropriate for PKCS12 input format. 6588 [Steve Henson] 6589 6590 *) Back-port of selected performance improvements from development 6591 branch, as well as improved support for PowerPC platforms. 6592 [Andy Polyakov] 6593 6594 *) Add lots of checks for memory allocation failure, error codes to indicate 6595 failure and freeing up memory if a failure occurs. 6596 [Nauticus Networks SSL Team <openssl@nauticusnet.com>, Steve Henson] 6597 6598 *) Add new -passin argument to dgst. 6599 [Steve Henson] 6600 6601 *) Perform some character comparisons of different types in X509_NAME_cmp: 6602 this is needed for some certificates that re-encode DNs into UTF8Strings 6603 (in violation of RFC3280) and can't or won't issue name rollover 6604 certificates. 6605 [Steve Henson] 6606 6607 *) Make an explicit check during certificate validation to see that 6608 the CA setting in each certificate on the chain is correct. As a 6609 side effect always do the following basic checks on extensions, 6610 not just when there's an associated purpose to the check: 6611 6612 - if there is an unhandled critical extension (unless the user 6613 has chosen to ignore this fault) 6614 - if the path length has been exceeded (if one is set at all) 6615 - that certain extensions fit the associated purpose (if one has 6616 been given) 6617 [Richard Levitte] 6618 6619 Changes between 0.9.7d and 0.9.7e [25 Oct 2004] 6620 6621 *) Avoid a race condition when CRLs are checked in a multi threaded 6622 environment. This would happen due to the reordering of the revoked 6623 entries during signature checking and serial number lookup. Now the 6624 encoding is cached and the serial number sort performed under a lock. 6625 Add new STACK function sk_is_sorted(). 6626 [Steve Henson] 6627 6628 *) Add Delta CRL to the extension code. 6629 [Steve Henson] 6630 6631 *) Various fixes to s3_pkt.c so alerts are sent properly. 6632 [David Holmes <d.holmes@f5.com>] 6633 6634 *) Reduce the chances of duplicate issuer name and serial numbers (in 6635 violation of RFC3280) using the OpenSSL certificate creation utilities. 6636 This is done by creating a random 64 bit value for the initial serial 6637 number when a serial number file is created or when a self signed 6638 certificate is created using 'openssl req -x509'. The initial serial 6639 number file is created using 'openssl x509 -next_serial' in CA.pl 6640 rather than being initialized to 1. 6641 [Steve Henson] 6642 6643 Changes between 0.9.7c and 0.9.7d [17 Mar 2004] 6644 6645 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 6646 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 6647 [Joe Orton, Steve Henson] 6648 6649 *) Fix flaw in SSL/TLS handshaking when using Kerberos ciphersuites 6650 (CVE-2004-0112) 6651 [Joe Orton, Steve Henson] 6652 6653 *) Make it possible to have multiple active certificates with the same 6654 subject in the CA index file. This is done only if the keyword 6655 'unique_subject' is set to 'no' in the main CA section (default 6656 if 'CA_default') of the configuration file. The value is saved 6657 with the database itself in a separate index attribute file, 6658 named like the index file with '.attr' appended to the name. 6659 [Richard Levitte] 6660 6661 *) X509 verify fixes. Disable broken certificate workarounds when 6662 X509_V_FLAGS_X509_STRICT is set. Check CRL issuer has cRLSign set if 6663 keyUsage extension present. Don't accept CRLs with unhandled critical 6664 extensions: since verify currently doesn't process CRL extensions this 6665 rejects a CRL with *any* critical extensions. Add new verify error codes 6666 for these cases. 6667 [Steve Henson] 6668 6669 *) When creating an OCSP nonce use an OCTET STRING inside the extnValue. 6670 A clarification of RFC2560 will require the use of OCTET STRINGs and 6671 some implementations cannot handle the current raw format. Since OpenSSL 6672 copies and compares OCSP nonces as opaque blobs without any attempt at 6673 parsing them this should not create any compatibility issues. 6674 [Steve Henson] 6675 6676 *) New md flag EVP_MD_CTX_FLAG_REUSE this allows md_data to be reused when 6677 calling EVP_MD_CTX_copy_ex() to avoid calling OPENSSL_malloc(). Without 6678 this HMAC (and other) operations are several times slower than OpenSSL 6679 < 0.9.7. 6680 [Steve Henson] 6681 6682 *) Print out GeneralizedTime and UTCTime in ASN1_STRING_print_ex(). 6683 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 6684 6685 *) Use the correct content when signing type "other". 6686 [Steve Henson] 6687 6688 Changes between 0.9.7b and 0.9.7c [30 Sep 2003] 6689 6690 *) Fix various bugs revealed by running the NISCC test suite: 6691 6692 Stop out of bounds reads in the ASN1 code when presented with 6693 invalid tags (CVE-2003-0543 and CVE-2003-0544). 6694 6695 Free up ASN1_TYPE correctly if ANY type is invalid (CVE-2003-0545). 6696 6697 If verify callback ignores invalid public key errors don't try to check 6698 certificate signature with the NULL public key. 6699 6700 [Steve Henson] 6701 6702 *) New -ignore_err option in ocsp application to stop the server 6703 exiting on the first error in a request. 6704 [Steve Henson] 6705 6706 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 6707 if the server requested one: as stated in TLS 1.0 and SSL 3.0 6708 specifications. 6709 [Steve Henson] 6710 6711 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 6712 extra data after the compression methods not only for TLS 1.0 6713 but also for SSL 3.0 (as required by the specification). 6714 [Bodo Moeller; problem pointed out by Matthias Loepfe] 6715 6716 *) Change X509_certificate_type() to mark the key as exported/exportable 6717 when it's 512 *bits* long, not 512 bytes. 6718 [Richard Levitte] 6719 6720 *) Change AES_cbc_encrypt() so it outputs exact multiple of 6721 blocks during encryption. 6722 [Richard Levitte] 6723 6724 *) Various fixes to base64 BIO and non blocking I/O. On write 6725 flushes were not handled properly if the BIO retried. On read 6726 data was not being buffered properly and had various logic bugs. 6727 This also affects blocking I/O when the data being decoded is a 6728 certain size. 6729 [Steve Henson] 6730 6731 *) Various S/MIME bugfixes and compatibility changes: 6732 output correct application/pkcs7 MIME type if 6733 PKCS7_NOOLDMIMETYPE is set. Tolerate some broken signatures. 6734 Output CR+LF for EOL if PKCS7_CRLFEOL is set (this makes opening 6735 of files as .eml work). Correctly handle very long lines in MIME 6736 parser. 6737 [Steve Henson] 6738 6739 Changes between 0.9.7a and 0.9.7b [10 Apr 2003] 6740 6741 *) Countermeasure against the Klima-Pokorny-Rosa extension of 6742 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 6743 a protocol version number mismatch like a decryption error 6744 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 6745 [Bodo Moeller] 6746 6747 *) Turn on RSA blinding by default in the default implementation 6748 to avoid a timing attack. Applications that don't want it can call 6749 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 6750 They would be ill-advised to do so in most cases. 6751 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 6752 6753 *) Change RSA blinding code so that it works when the PRNG is not 6754 seeded (in this case, the secret RSA exponent is abused as 6755 an unpredictable seed -- if it is not unpredictable, there 6756 is no point in blinding anyway). Make RSA blinding thread-safe 6757 by remembering the creator's thread ID in rsa->blinding and 6758 having all other threads use local one-time blinding factors 6759 (this requires more computation than sharing rsa->blinding, but 6760 avoids excessive locking; and if an RSA object is not shared 6761 between threads, blinding will still be very fast). 6762 [Bodo Moeller] 6763 6764 *) Fixed a typo bug that would cause ENGINE_set_default() to set an 6765 ENGINE as defaults for all supported algorithms irrespective of 6766 the 'flags' parameter. 'flags' is now honoured, so applications 6767 should make sure they are passing it correctly. 6768 [Geoff Thorpe] 6769 6770 *) Target "mingw" now allows native Windows code to be generated in 6771 the Cygwin environment as well as with the MinGW compiler. 6772 [Ulf Moeller] 6773 6774 Changes between 0.9.7 and 0.9.7a [19 Feb 2003] 6775 6776 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 6777 via timing by performing a MAC computation even if incorrect 6778 block cipher padding has been found. This is a countermeasure 6779 against active attacks where the attacker has to distinguish 6780 between bad padding and a MAC verification error. (CVE-2003-0078) 6781 6782 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 6783 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 6784 Martin Vuagnoux (EPFL, Ilion)] 6785 6786 *) Make the no-err option work as intended. The intention with no-err 6787 is not to have the whole error stack handling routines removed from 6788 libcrypto, it's only intended to remove all the function name and 6789 reason texts, thereby removing some of the footprint that may not 6790 be interesting if those errors aren't displayed anyway. 6791 6792 NOTE: it's still possible for any application or module to have it's 6793 own set of error texts inserted. The routines are there, just not 6794 used by default when no-err is given. 6795 [Richard Levitte] 6796 6797 *) Add support for FreeBSD on IA64. 6798 [dirk.meyer@dinoex.sub.org via Richard Levitte, resolves #454] 6799 6800 *) Adjust DES_cbc_cksum() so it returns the same value as the MIT 6801 Kerberos function mit_des_cbc_cksum(). Before this change, 6802 the value returned by DES_cbc_cksum() was like the one from 6803 mit_des_cbc_cksum(), except the bytes were swapped. 6804 [Kevin Greaney <Kevin.Greaney@hp.com> and Richard Levitte] 6805 6806 *) Allow an application to disable the automatic SSL chain building. 6807 Before this a rather primitive chain build was always performed in 6808 ssl3_output_cert_chain(): an application had no way to send the 6809 correct chain if the automatic operation produced an incorrect result. 6810 6811 Now the chain builder is disabled if either: 6812 6813 1. Extra certificates are added via SSL_CTX_add_extra_chain_cert(). 6814 6815 2. The mode flag SSL_MODE_NO_AUTO_CHAIN is set. 6816 6817 The reasoning behind this is that an application would not want the 6818 auto chain building to take place if extra chain certificates are 6819 present and it might also want a means of sending no additional 6820 certificates (for example the chain has two certificates and the 6821 root is omitted). 6822 [Steve Henson] 6823 6824 *) Add the possibility to build without the ENGINE framework. 6825 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 6826 6827 *) Under Win32 gmtime() can return NULL: check return value in 6828 OPENSSL_gmtime(). Add error code for case where gmtime() fails. 6829 [Steve Henson] 6830 6831 *) DSA routines: under certain error conditions uninitialized BN objects 6832 could be freed. Solution: make sure initialization is performed early 6833 enough. (Reported and fix supplied by Ivan D Nestlerode <nestler@MIT.EDU>, 6834 Nils Larsch <nla@trustcenter.de> via PR#459) 6835 [Lutz Jaenicke] 6836 6837 *) Another fix for SSLv2 session ID handling: the session ID was incorrectly 6838 checked on reconnect on the client side, therefore session resumption 6839 could still fail with a "ssl session id is different" error. This 6840 behaviour is masked when SSL_OP_ALL is used due to 6841 SSL_OP_MICROSOFT_SESS_ID_BUG being set. 6842 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 6843 followup to PR #377. 6844 [Lutz Jaenicke] 6845 6846 *) IA-32 assembler support enhancements: unified ELF targets, support 6847 for SCO/Caldera platforms, fix for Cygwin shared build. 6848 [Andy Polyakov] 6849 6850 *) Add support for FreeBSD on sparc64. As a consequence, support for 6851 FreeBSD on non-x86 processors is separate from x86 processors on 6852 the config script, much like the NetBSD support. 6853 [Richard Levitte & Kris Kennaway <kris@obsecurity.org>] 6854 6855 Changes between 0.9.6h and 0.9.7 [31 Dec 2002] 6856 6857 [NB: OpenSSL 0.9.6i and later 0.9.6 patch levels were released after 6858 OpenSSL 0.9.7.] 6859 6860 *) Fix session ID handling in SSLv2 client code: the SERVER FINISHED 6861 code (06) was taken as the first octet of the session ID and the last 6862 octet was ignored consequently. As a result SSLv2 client side session 6863 caching could not have worked due to the session ID mismatch between 6864 client and server. 6865 Behaviour observed by Crispin Flowerday <crispin@flowerday.cx> as 6866 PR #377. 6867 [Lutz Jaenicke] 6868 6869 *) Change the declaration of needed Kerberos libraries to use EX_LIBS 6870 instead of the special (and badly supported) LIBKRB5. LIBKRB5 is 6871 removed entirely. 6872 [Richard Levitte] 6873 6874 *) The hw_ncipher.c engine requires dynamic locks. Unfortunately, it 6875 seems that in spite of existing for more than a year, many application 6876 author have done nothing to provide the necessary callbacks, which 6877 means that this particular engine will not work properly anywhere. 6878 This is a very unfortunate situation which forces us, in the name 6879 of usability, to give the hw_ncipher.c a static lock, which is part 6880 of libcrypto. 6881 NOTE: This is for the 0.9.7 series ONLY. This hack will never 6882 appear in 0.9.8 or later. We EXPECT application authors to have 6883 dealt properly with this when 0.9.8 is released (unless we actually 6884 make such changes in the libcrypto locking code that changes will 6885 have to be made anyway). 6886 [Richard Levitte] 6887 6888 *) In asn1_d2i_read_bio() repeatedly call BIO_read() until all content 6889 octets have been read, EOF or an error occurs. Without this change 6890 some truncated ASN1 structures will not produce an error. 6891 [Steve Henson] 6892 6893 *) Disable Heimdal support, since it hasn't been fully implemented. 6894 Still give the possibility to force the use of Heimdal, but with 6895 warnings and a request that patches get sent to openssl-dev. 6896 [Richard Levitte] 6897 6898 *) Add the VC-CE target, introduce the WINCE sysname, and add 6899 INSTALL.WCE and appropriate conditionals to make it build. 6900 [Steven Reddie <smr@essemer.com.au> via Richard Levitte] 6901 6902 *) Change the DLL names for Cygwin to cygcrypto-x.y.z.dll and 6903 cygssl-x.y.z.dll, where x, y and z are the major, minor and 6904 edit numbers of the version. 6905 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 6906 6907 *) Introduce safe string copy and catenation functions 6908 (BUF_strlcpy() and BUF_strlcat()). 6909 [Ben Laurie (CHATS) and Richard Levitte] 6910 6911 *) Avoid using fixed-size buffers for one-line DNs. 6912 [Ben Laurie (CHATS)] 6913 6914 *) Add BUF_MEM_grow_clean() to avoid information leakage when 6915 resizing buffers containing secrets, and use where appropriate. 6916 [Ben Laurie (CHATS)] 6917 6918 *) Avoid using fixed size buffers for configuration file location. 6919 [Ben Laurie (CHATS)] 6920 6921 *) Avoid filename truncation for various CA files. 6922 [Ben Laurie (CHATS)] 6923 6924 *) Use sizeof in preference to magic numbers. 6925 [Ben Laurie (CHATS)] 6926 6927 *) Avoid filename truncation in cert requests. 6928 [Ben Laurie (CHATS)] 6929 6930 *) Add assertions to check for (supposedly impossible) buffer 6931 overflows. 6932 [Ben Laurie (CHATS)] 6933 6934 *) Don't cache truncated DNS entries in the local cache (this could 6935 potentially lead to a spoofing attack). 6936 [Ben Laurie (CHATS)] 6937 6938 *) Fix various buffers to be large enough for hex/decimal 6939 representations in a platform independent manner. 6940 [Ben Laurie (CHATS)] 6941 6942 *) Add CRYPTO_realloc_clean() to avoid information leakage when 6943 resizing buffers containing secrets, and use where appropriate. 6944 [Ben Laurie (CHATS)] 6945 6946 *) Add BIO_indent() to avoid much slightly worrying code to do 6947 indents. 6948 [Ben Laurie (CHATS)] 6949 6950 *) Convert sprintf()/BIO_puts() to BIO_printf(). 6951 [Ben Laurie (CHATS)] 6952 6953 *) buffer_gets() could terminate with the buffer only half 6954 full. Fixed. 6955 [Ben Laurie (CHATS)] 6956 6957 *) Add assertions to prevent user-supplied crypto functions from 6958 overflowing internal buffers by having large block sizes, etc. 6959 [Ben Laurie (CHATS)] 6960 6961 *) New OPENSSL_assert() macro (similar to assert(), but enabled 6962 unconditionally). 6963 [Ben Laurie (CHATS)] 6964 6965 *) Eliminate unused copy of key in RC4. 6966 [Ben Laurie (CHATS)] 6967 6968 *) Eliminate unused and incorrectly sized buffers for IV in pem.h. 6969 [Ben Laurie (CHATS)] 6970 6971 *) Fix off-by-one error in EGD path. 6972 [Ben Laurie (CHATS)] 6973 6974 *) If RANDFILE path is too long, ignore instead of truncating. 6975 [Ben Laurie (CHATS)] 6976 6977 *) Eliminate unused and incorrectly sized X.509 structure 6978 CBCParameter. 6979 [Ben Laurie (CHATS)] 6980 6981 *) Eliminate unused and dangerous function knumber(). 6982 [Ben Laurie (CHATS)] 6983 6984 *) Eliminate unused and dangerous structure, KSSL_ERR. 6985 [Ben Laurie (CHATS)] 6986 6987 *) Protect against overlong session ID context length in an encoded 6988 session object. Since these are local, this does not appear to be 6989 exploitable. 6990 [Ben Laurie (CHATS)] 6991 6992 *) Change from security patch (see 0.9.6e below) that did not affect 6993 the 0.9.6 release series: 6994 6995 Remote buffer overflow in SSL3 protocol - an attacker could 6996 supply an oversized master key in Kerberos-enabled versions. 6997 (CVE-2002-0657) 6998 [Ben Laurie (CHATS)] 6999 7000 *) Change the SSL kerb5 codes to match RFC 2712. 7001 [Richard Levitte] 7002 7003 *) Make -nameopt work fully for req and add -reqopt switch. 7004 [Michael Bell <michael.bell@rz.hu-berlin.de>, Steve Henson] 7005 7006 *) The "block size" for block ciphers in CFB and OFB mode should be 1. 7007 [Steve Henson, reported by Yngve Nysaeter Pettersen <yngve@opera.com>] 7008 7009 *) Make sure tests can be performed even if the corresponding algorithms 7010 have been removed entirely. This was also the last step to make 7011 OpenSSL compilable with DJGPP under all reasonable conditions. 7012 [Richard Levitte, Doug Kaufman <dkaufman@rahul.net>] 7013 7014 *) Add cipher selection rules COMPLEMENTOFALL and COMPLEMENTOFDEFAULT 7015 to allow version independent disabling of normally unselected ciphers, 7016 which may be activated as a side-effect of selecting a single cipher. 7017 7018 (E.g., cipher list string "RSA" enables ciphersuites that are left 7019 out of "ALL" because they do not provide symmetric encryption. 7020 "RSA:!COMPLEMEMENTOFALL" avoids these unsafe ciphersuites.) 7021 [Lutz Jaenicke, Bodo Moeller] 7022 7023 *) Add appropriate support for separate platform-dependent build 7024 directories. The recommended way to make a platform-dependent 7025 build directory is the following (tested on Linux), maybe with 7026 some local tweaks: 7027 7028 # Place yourself outside of the OpenSSL source tree. In 7029 # this example, the environment variable OPENSSL_SOURCE 7030 # is assumed to contain the absolute OpenSSL source directory. 7031 mkdir -p objtree/"`uname -s`-`uname -r`-`uname -m`" 7032 cd objtree/"`uname -s`-`uname -r`-`uname -m`" 7033 (cd $OPENSSL_SOURCE; find . -type f) | while read F; do 7034 mkdir -p `dirname $F` 7035 ln -s $OPENSSL_SOURCE/$F $F 7036 done 7037 7038 To be absolutely sure not to disturb the source tree, a "make clean" 7039 is a good thing. If it isn't successful, don't worry about it, 7040 it probably means the source directory is very clean. 7041 [Richard Levitte] 7042 7043 *) Make sure any ENGINE control commands make local copies of string 7044 pointers passed to them whenever necessary. Otherwise it is possible 7045 the caller may have overwritten (or deallocated) the original string 7046 data when a later ENGINE operation tries to use the stored values. 7047 [Götz Babin-Ebell <babinebell@trustcenter.de>] 7048 7049 *) Improve diagnostics in file reading and command-line digests. 7050 [Ben Laurie aided and abetted by Solar Designer <solar@openwall.com>] 7051 7052 *) Add AES modes CFB and OFB to the object database. Correct an 7053 error in AES-CFB decryption. 7054 [Richard Levitte] 7055 7056 *) Remove most calls to EVP_CIPHER_CTX_cleanup() in evp_enc.c, this 7057 allows existing EVP_CIPHER_CTX structures to be reused after 7058 calling EVP_*Final(). This behaviour is used by encryption 7059 BIOs and some applications. This has the side effect that 7060 applications must explicitly clean up cipher contexts with 7061 EVP_CIPHER_CTX_cleanup() or they will leak memory. 7062 [Steve Henson] 7063 7064 *) Check the values of dna and dnb in bn_mul_recursive before calling 7065 bn_mul_comba (a non zero value means the a or b arrays do not contain 7066 n2 elements) and fallback to bn_mul_normal if either is not zero. 7067 [Steve Henson] 7068 7069 *) Fix escaping of non-ASCII characters when using the -subj option 7070 of the "openssl req" command line tool. (Robert Joop <joop@fokus.gmd.de>) 7071 [Lutz Jaenicke] 7072 7073 *) Make object definitions compliant to LDAP (RFC2256): SN is the short 7074 form for "surname", serialNumber has no short form. 7075 Use "mail" as the short name for "rfc822Mailbox" according to RFC2798; 7076 therefore remove "mail" short name for "internet 7". 7077 The OID for unique identifiers in X509 certificates is 7078 x500UniqueIdentifier, not uniqueIdentifier. 7079 Some more OID additions. (Michael Bell <michael.bell@rz.hu-berlin.de>) 7080 [Lutz Jaenicke] 7081 7082 *) Add an "init" command to the ENGINE config module and auto initialize 7083 ENGINEs. Without any "init" command the ENGINE will be initialized 7084 after all ctrl commands have been executed on it. If init=1 the 7085 ENGINE is initialized at that point (ctrls before that point are run 7086 on the uninitialized ENGINE and after on the initialized one). If 7087 init=0 then the ENGINE will not be initialized at all. 7088 [Steve Henson] 7089 7090 *) Fix the 'app_verify_callback' interface so that the user-defined 7091 argument is actually passed to the callback: In the 7092 SSL_CTX_set_cert_verify_callback() prototype, the callback 7093 declaration has been changed from 7094 int (*cb)() 7095 into 7096 int (*cb)(X509_STORE_CTX *,void *); 7097 in ssl_verify_cert_chain (ssl/ssl_cert.c), the call 7098 i=s->ctx->app_verify_callback(&ctx) 7099 has been changed into 7100 i=s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg). 7101 7102 To update applications using SSL_CTX_set_cert_verify_callback(), 7103 a dummy argument can be added to their callback functions. 7104 [D. K. Smetters <smetters@parc.xerox.com>] 7105 7106 *) Added the '4758cca' ENGINE to support IBM 4758 cards. 7107 [Maurice Gittens <maurice@gittens.nl>, touchups by Geoff Thorpe] 7108 7109 *) Add and OPENSSL_LOAD_CONF define which will cause 7110 OpenSSL_add_all_algorithms() to load the openssl.cnf config file. 7111 This allows older applications to transparently support certain 7112 OpenSSL features: such as crypto acceleration and dynamic ENGINE loading. 7113 Two new functions OPENSSL_add_all_algorithms_noconf() which will never 7114 load the config file and OPENSSL_add_all_algorithms_conf() which will 7115 always load it have also been added. 7116 [Steve Henson] 7117 7118 *) Add the OFB, CFB and CTR (all with 128 bit feedback) to AES. 7119 Adjust NIDs and EVP layer. 7120 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 7121 7122 *) Config modules support in openssl utility. 7123 7124 Most commands now load modules from the config file, 7125 though in a few (such as version) this isn't done 7126 because it couldn't be used for anything. 7127 7128 In the case of ca and req the config file used is 7129 the same as the utility itself: that is the -config 7130 command line option can be used to specify an 7131 alternative file. 7132 [Steve Henson] 7133 7134 *) Move default behaviour from OPENSSL_config(). If appname is NULL 7135 use "openssl_conf" if filename is NULL use default openssl config file. 7136 [Steve Henson] 7137 7138 *) Add an argument to OPENSSL_config() to allow the use of an alternative 7139 config section name. Add a new flag to tolerate a missing config file 7140 and move code to CONF_modules_load_file(). 7141 [Steve Henson] 7142 7143 *) Support for crypto accelerator cards from Accelerated Encryption 7144 Processing, www.aep.ie. (Use engine 'aep') 7145 The support was copied from 0.9.6c [engine] and adapted/corrected 7146 to work with the new engine framework. 7147 [AEP Inc. and Richard Levitte] 7148 7149 *) Support for SureWare crypto accelerator cards from Baltimore 7150 Technologies. (Use engine 'sureware') 7151 The support was copied from 0.9.6c [engine] and adapted 7152 to work with the new engine framework. 7153 [Richard Levitte] 7154 7155 *) Have the CHIL engine fork-safe (as defined by nCipher) and actually 7156 make the newer ENGINE framework commands for the CHIL engine work. 7157 [Toomas Kiisk <vix@cyber.ee> and Richard Levitte] 7158 7159 *) Make it possible to produce shared libraries on ReliantUNIX. 7160 [Robert Dahlem <Robert.Dahlem@ffm2.siemens.de> via Richard Levitte] 7161 7162 *) Add the configuration target debug-linux-ppro. 7163 Make 'openssl rsa' use the general key loading routines 7164 implemented in apps.c, and make those routines able to 7165 handle the key format FORMAT_NETSCAPE and the variant 7166 FORMAT_IISSGC. 7167 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 7168 7169 *) Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 7170 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 7171 7172 *) Add -keyform to rsautl, and document -engine. 7173 [Richard Levitte, inspired by Toomas Kiisk <vix@cyber.ee>] 7174 7175 *) Change BIO_new_file (crypto/bio/bss_file.c) to use new 7176 BIO_R_NO_SUCH_FILE error code rather than the generic 7177 ERR_R_SYS_LIB error code if fopen() fails with ENOENT. 7178 [Ben Laurie] 7179 7180 *) Add new functions 7181 ERR_peek_last_error 7182 ERR_peek_last_error_line 7183 ERR_peek_last_error_line_data. 7184 These are similar to 7185 ERR_peek_error 7186 ERR_peek_error_line 7187 ERR_peek_error_line_data, 7188 but report on the latest error recorded rather than the first one 7189 still in the error queue. 7190 [Ben Laurie, Bodo Moeller] 7191 7192 *) default_algorithms option in ENGINE config module. This allows things 7193 like: 7194 default_algorithms = ALL 7195 default_algorithms = RSA, DSA, RAND, CIPHERS, DIGESTS 7196 [Steve Henson] 7197 7198 *) Preliminary ENGINE config module. 7199 [Steve Henson] 7200 7201 *) New experimental application configuration code. 7202 [Steve Henson] 7203 7204 *) Change the AES code to follow the same name structure as all other 7205 symmetric ciphers, and behave the same way. Move everything to 7206 the directory crypto/aes, thereby obsoleting crypto/rijndael. 7207 [Stephen Sprunk <stephen@sprunk.org> and Richard Levitte] 7208 7209 *) SECURITY: remove unsafe setjmp/signal interaction from ui_openssl.c. 7210 [Ben Laurie and Theo de Raadt] 7211 7212 *) Add option to output public keys in req command. 7213 [Massimiliano Pala madwolf@openca.org] 7214 7215 *) Use wNAFs in EC_POINTs_mul() for improved efficiency 7216 (up to about 10% better than before for P-192 and P-224). 7217 [Bodo Moeller] 7218 7219 *) New functions/macros 7220 7221 SSL_CTX_set_msg_callback(ctx, cb) 7222 SSL_CTX_set_msg_callback_arg(ctx, arg) 7223 SSL_set_msg_callback(ssl, cb) 7224 SSL_set_msg_callback_arg(ssl, arg) 7225 7226 to request calling a callback function 7227 7228 void cb(int write_p, int version, int content_type, 7229 const void *buf, size_t len, SSL *ssl, void *arg) 7230 7231 whenever a protocol message has been completely received 7232 (write_p == 0) or sent (write_p == 1). Here 'version' is the 7233 protocol version according to which the SSL library interprets 7234 the current protocol message (SSL2_VERSION, SSL3_VERSION, or 7235 TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or 7236 the content type as defined in the SSL 3.0/TLS 1.0 protocol 7237 specification (change_cipher_spec(20), alert(21), handshake(22)). 7238 'buf' and 'len' point to the actual message, 'ssl' to the 7239 SSL object, and 'arg' is the application-defined value set by 7240 SSL[_CTX]_set_msg_callback_arg(). 7241 7242 'openssl s_client' and 'openssl s_server' have new '-msg' options 7243 to enable a callback that displays all protocol messages. 7244 [Bodo Moeller] 7245 7246 *) Change the shared library support so shared libraries are built as 7247 soon as the corresponding static library is finished, and thereby get 7248 openssl and the test programs linked against the shared library. 7249 This still only happens when the keyword "shard" has been given to 7250 the configuration scripts. 7251 7252 NOTE: shared library support is still an experimental thing, and 7253 backward binary compatibility is still not guaranteed. 7254 ["Maciej W. Rozycki" <macro@ds2.pg.gda.pl> and Richard Levitte] 7255 7256 *) Add support for Subject Information Access extension. 7257 [Peter Sylvester <Peter.Sylvester@EdelWeb.fr>] 7258 7259 *) Make BUF_MEM_grow() behaviour more consistent: Initialise to zero 7260 additional bytes when new memory had to be allocated, not just 7261 when reusing an existing buffer. 7262 [Bodo Moeller] 7263 7264 *) New command line and configuration option 'utf8' for the req command. 7265 This allows field values to be specified as UTF8 strings. 7266 [Steve Henson] 7267 7268 *) Add -multi and -mr options to "openssl speed" - giving multiple parallel 7269 runs for the former and machine-readable output for the latter. 7270 [Ben Laurie] 7271 7272 *) Add '-noemailDN' option to 'openssl ca'. This prevents inclusion 7273 of the e-mail address in the DN (i.e., it will go into a certificate 7274 extension only). The new configuration file option 'email_in_dn = no' 7275 has the same effect. 7276 [Massimiliano Pala madwolf@openca.org] 7277 7278 *) Change all functions with names starting with des_ to be starting 7279 with DES_ instead. Add wrappers that are compatible with libdes, 7280 but are named _ossl_old_des_*. Finally, add macros that map the 7281 des_* symbols to the corresponding _ossl_old_des_* if libdes 7282 compatibility is desired. If OpenSSL 0.9.6c compatibility is 7283 desired, the des_* symbols will be mapped to DES_*, with one 7284 exception. 7285 7286 Since we provide two compatibility mappings, the user needs to 7287 define the macro OPENSSL_DES_LIBDES_COMPATIBILITY if libdes 7288 compatibility is desired. The default (i.e., when that macro 7289 isn't defined) is OpenSSL 0.9.6c compatibility. 7290 7291 There are also macros that enable and disable the support of old 7292 des functions altogether. Those are OPENSSL_ENABLE_OLD_DES_SUPPORT 7293 and OPENSSL_DISABLE_OLD_DES_SUPPORT. If none or both of those 7294 are defined, the default will apply: to support the old des routines. 7295 7296 In either case, one must include openssl/des.h to get the correct 7297 definitions. Do not try to just include openssl/des_old.h, that 7298 won't work. 7299 7300 NOTE: This is a major break of an old API into a new one. Software 7301 authors are encouraged to switch to the DES_ style functions. Some 7302 time in the future, des_old.h and the libdes compatibility functions 7303 will be disable (i.e. OPENSSL_DISABLE_OLD_DES_SUPPORT will be the 7304 default), and then completely removed. 7305 [Richard Levitte] 7306 7307 *) Test for certificates which contain unsupported critical extensions. 7308 If such a certificate is found during a verify operation it is 7309 rejected by default: this behaviour can be overridden by either 7310 handling the new error X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION or 7311 by setting the verify flag X509_V_FLAG_IGNORE_CRITICAL. A new function 7312 X509_supported_extension() has also been added which returns 1 if a 7313 particular extension is supported. 7314 [Steve Henson] 7315 7316 *) Modify the behaviour of EVP cipher functions in similar way to digests 7317 to retain compatibility with existing code. 7318 [Steve Henson] 7319 7320 *) Modify the behaviour of EVP_DigestInit() and EVP_DigestFinal() to retain 7321 compatibility with existing code. In particular the 'ctx' parameter does 7322 not have to be to be initialized before the call to EVP_DigestInit() and 7323 it is tidied up after a call to EVP_DigestFinal(). New function 7324 EVP_DigestFinal_ex() which does not tidy up the ctx. Similarly function 7325 EVP_MD_CTX_copy() changed to not require the destination to be 7326 initialized valid and new function EVP_MD_CTX_copy_ex() added which 7327 requires the destination to be valid. 7328 7329 Modify all the OpenSSL digest calls to use EVP_DigestInit_ex(), 7330 EVP_DigestFinal_ex() and EVP_MD_CTX_copy_ex(). 7331 [Steve Henson] 7332 7333 *) Change ssl3_get_message (ssl/s3_both.c) and the functions using it 7334 so that complete 'Handshake' protocol structures are kept in memory 7335 instead of overwriting 'msg_type' and 'length' with 'body' data. 7336 [Bodo Moeller] 7337 7338 *) Add an implementation of SSL_add_dir_cert_subjects_to_stack for Win32. 7339 [Massimo Santin via Richard Levitte] 7340 7341 *) Major restructuring to the underlying ENGINE code. This includes 7342 reduction of linker bloat, separation of pure "ENGINE" manipulation 7343 (initialisation, etc) from functionality dealing with implementations 7344 of specific crypto interfaces. This change also introduces integrated 7345 support for symmetric ciphers and digest implementations - so ENGINEs 7346 can now accelerate these by providing EVP_CIPHER and EVP_MD 7347 implementations of their own. This is detailed in crypto/engine/README 7348 as it couldn't be adequately described here. However, there are a few 7349 API changes worth noting - some RSA, DSA, DH, and RAND functions that 7350 were changed in the original introduction of ENGINE code have now 7351 reverted back - the hooking from this code to ENGINE is now a good 7352 deal more passive and at run-time, operations deal directly with 7353 RSA_METHODs, DSA_METHODs (etc) as they did before, rather than 7354 dereferencing through an ENGINE pointer any more. Also, the ENGINE 7355 functions dealing with BN_MOD_EXP[_CRT] handlers have been removed - 7356 they were not being used by the framework as there is no concept of a 7357 BIGNUM_METHOD and they could not be generalised to the new 7358 'ENGINE_TABLE' mechanism that underlies the new code. Similarly, 7359 ENGINE_cpy() has been removed as it cannot be consistently defined in 7360 the new code. 7361 [Geoff Thorpe] 7362 7363 *) Change ASN1_GENERALIZEDTIME_check() to allow fractional seconds. 7364 [Steve Henson] 7365 7366 *) Change mkdef.pl to sort symbols that get the same entry number, 7367 and make sure the automatically generated functions ERR_load_* 7368 become part of libeay.num as well. 7369 [Richard Levitte] 7370 7371 *) New function SSL_renegotiate_pending(). This returns true once 7372 renegotiation has been requested (either SSL_renegotiate() call 7373 or HelloRequest/ClientHello received from the peer) and becomes 7374 false once a handshake has been completed. 7375 (For servers, SSL_renegotiate() followed by SSL_do_handshake() 7376 sends a HelloRequest, but does not ensure that a handshake takes 7377 place. SSL_renegotiate_pending() is useful for checking if the 7378 client has followed the request.) 7379 [Bodo Moeller] 7380 7381 *) New SSL option SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION. 7382 By default, clients may request session resumption even during 7383 renegotiation (if session ID contexts permit); with this option, 7384 session resumption is possible only in the first handshake. 7385 7386 SSL_OP_ALL is now 0x00000FFFL instead of 0x000FFFFFL. This makes 7387 more bits available for options that should not be part of 7388 SSL_OP_ALL (such as SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION). 7389 [Bodo Moeller] 7390 7391 *) Add some demos for certificate and certificate request creation. 7392 [Steve Henson] 7393 7394 *) Make maximum certificate chain size accepted from the peer application 7395 settable (SSL*_get/set_max_cert_list()), as proposed by 7396 "Douglas E. Engert" <deengert@anl.gov>. 7397 [Lutz Jaenicke] 7398 7399 *) Add support for shared libraries for Unixware-7 7400 (Boyd Lynn Gerber <gerberb@zenez.com>). 7401 [Lutz Jaenicke] 7402 7403 *) Add a "destroy" handler to ENGINEs that allows structural cleanup to 7404 be done prior to destruction. Use this to unload error strings from 7405 ENGINEs that load their own error strings. NB: This adds two new API 7406 functions to "get" and "set" this destroy handler in an ENGINE. 7407 [Geoff Thorpe] 7408 7409 *) Alter all existing ENGINE implementations (except "openssl" and 7410 "openbsd") to dynamically instantiate their own error strings. This 7411 makes them more flexible to be built both as statically-linked ENGINEs 7412 and self-contained shared-libraries loadable via the "dynamic" ENGINE. 7413 Also, add stub code to each that makes building them as self-contained 7414 shared-libraries easier (see README.ENGINE). 7415 [Geoff Thorpe] 7416 7417 *) Add a "dynamic" ENGINE that provides a mechanism for binding ENGINE 7418 implementations into applications that are completely implemented in 7419 self-contained shared-libraries. The "dynamic" ENGINE exposes control 7420 commands that can be used to configure what shared-library to load and 7421 to control aspects of the way it is handled. Also, made an update to 7422 the README.ENGINE file that brings its information up-to-date and 7423 provides some information and instructions on the "dynamic" ENGINE 7424 (ie. how to use it, how to build "dynamic"-loadable ENGINEs, etc). 7425 [Geoff Thorpe] 7426 7427 *) Make it possible to unload ranges of ERR strings with a new 7428 "ERR_unload_strings" function. 7429 [Geoff Thorpe] 7430 7431 *) Add a copy() function to EVP_MD. 7432 [Ben Laurie] 7433 7434 *) Make EVP_MD routines take a context pointer instead of just the 7435 md_data void pointer. 7436 [Ben Laurie] 7437 7438 *) Add flags to EVP_MD and EVP_MD_CTX. EVP_MD_FLAG_ONESHOT indicates 7439 that the digest can only process a single chunk of data 7440 (typically because it is provided by a piece of 7441 hardware). EVP_MD_CTX_FLAG_ONESHOT indicates that the application 7442 is only going to provide a single chunk of data, and hence the 7443 framework needn't accumulate the data for oneshot drivers. 7444 [Ben Laurie] 7445 7446 *) As with "ERR", make it possible to replace the underlying "ex_data" 7447 functions. This change also alters the storage and management of global 7448 ex_data state - it's now all inside ex_data.c and all "class" code (eg. 7449 RSA, BIO, SSL_CTX, etc) no longer stores its own STACKS and per-class 7450 index counters. The API functions that use this state have been changed 7451 to take a "class_index" rather than pointers to the class's local STACK 7452 and counter, and there is now an API function to dynamically create new 7453 classes. This centralisation allows us to (a) plug a lot of the 7454 thread-safety problems that existed, and (b) makes it possible to clean 7455 up all allocated state using "CRYPTO_cleanup_all_ex_data()". W.r.t. (b) 7456 such data would previously have always leaked in application code and 7457 workarounds were in place to make the memory debugging turn a blind eye 7458 to it. Application code that doesn't use this new function will still 7459 leak as before, but their memory debugging output will announce it now 7460 rather than letting it slide. 7461 7462 Besides the addition of CRYPTO_cleanup_all_ex_data(), another API change 7463 induced by the "ex_data" overhaul is that X509_STORE_CTX_init() now 7464 has a return value to indicate success or failure. 7465 [Geoff Thorpe] 7466 7467 *) Make it possible to replace the underlying "ERR" functions such that the 7468 global state (2 LHASH tables and 2 locks) is only used by the "default" 7469 implementation. This change also adds two functions to "get" and "set" 7470 the implementation prior to it being automatically set the first time 7471 any other ERR function takes place. Ie. an application can call "get", 7472 pass the return value to a module it has just loaded, and that module 7473 can call its own "set" function using that value. This means the 7474 module's "ERR" operations will use (and modify) the error state in the 7475 application and not in its own statically linked copy of OpenSSL code. 7476 [Geoff Thorpe] 7477 7478 *) Give DH, DSA, and RSA types their own "**_up_ref()" function to increment 7479 reference counts. This performs normal REF_PRINT/REF_CHECK macros on 7480 the operation, and provides a more encapsulated way for external code 7481 (crypto/evp/ and ssl/) to do this. Also changed the evp and ssl code 7482 to use these functions rather than manually incrementing the counts. 7483 7484 Also rename "DSO_up()" function to more descriptive "DSO_up_ref()". 7485 [Geoff Thorpe] 7486 7487 *) Add EVP test program. 7488 [Ben Laurie] 7489 7490 *) Add symmetric cipher support to ENGINE. Expect the API to change! 7491 [Ben Laurie] 7492 7493 *) New CRL functions: X509_CRL_set_version(), X509_CRL_set_issuer_name() 7494 X509_CRL_set_lastUpdate(), X509_CRL_set_nextUpdate(), X509_CRL_sort(), 7495 X509_REVOKED_set_serialNumber(), and X509_REVOKED_set_revocationDate(). 7496 These allow a CRL to be built without having to access X509_CRL fields 7497 directly. Modify 'ca' application to use new functions. 7498 [Steve Henson] 7499 7500 *) Move SSL_OP_TLS_ROLLBACK_BUG out of the SSL_OP_ALL list of recommended 7501 bug workarounds. Rollback attack detection is a security feature. 7502 The problem will only arise on OpenSSL servers when TLSv1 is not 7503 available (sslv3_server_method() or SSL_OP_NO_TLSv1). 7504 Software authors not wanting to support TLSv1 will have special reasons 7505 for their choice and can explicitly enable this option. 7506 [Bodo Moeller, Lutz Jaenicke] 7507 7508 *) Rationalise EVP so it can be extended: don't include a union of 7509 cipher/digest structures, add init/cleanup functions for EVP_MD_CTX 7510 (similar to those existing for EVP_CIPHER_CTX). 7511 Usage example: 7512 7513 EVP_MD_CTX md; 7514 7515 EVP_MD_CTX_init(&md); /* new function call */ 7516 EVP_DigestInit(&md, EVP_sha1()); 7517 EVP_DigestUpdate(&md, in, len); 7518 EVP_DigestFinal(&md, out, NULL); 7519 EVP_MD_CTX_cleanup(&md); /* new function call */ 7520 7521 [Ben Laurie] 7522 7523 *) Make DES key schedule conform to the usual scheme, as well as 7524 correcting its structure. This means that calls to DES functions 7525 now have to pass a pointer to a des_key_schedule instead of a 7526 plain des_key_schedule (which was actually always a pointer 7527 anyway): E.g., 7528 7529 des_key_schedule ks; 7530 7531 des_set_key_checked(..., &ks); 7532 des_ncbc_encrypt(..., &ks, ...); 7533 7534 (Note that a later change renames 'des_...' into 'DES_...'.) 7535 [Ben Laurie] 7536 7537 *) Initial reduction of linker bloat: the use of some functions, such as 7538 PEM causes large amounts of unused functions to be linked in due to 7539 poor organisation. For example pem_all.c contains every PEM function 7540 which has a knock on effect of linking in large amounts of (unused) 7541 ASN1 code. Grouping together similar functions and splitting unrelated 7542 functions prevents this. 7543 [Steve Henson] 7544 7545 *) Cleanup of EVP macros. 7546 [Ben Laurie] 7547 7548 *) Change historical references to {NID,SN,LN}_des_ede and ede3 to add the 7549 correct _ecb suffix. 7550 [Ben Laurie] 7551 7552 *) Add initial OCSP responder support to ocsp application. The 7553 revocation information is handled using the text based index 7554 use by the ca application. The responder can either handle 7555 requests generated internally, supplied in files (for example 7556 via a CGI script) or using an internal minimal server. 7557 [Steve Henson] 7558 7559 *) Add configuration choices to get zlib compression for TLS. 7560 [Richard Levitte] 7561 7562 *) Changes to Kerberos SSL for RFC 2712 compliance: 7563 1. Implemented real KerberosWrapper, instead of just using 7564 KRB5 AP_REQ message. [Thanks to Simon Wilkinson <sxw@sxw.org.uk>] 7565 2. Implemented optional authenticator field of KerberosWrapper. 7566 7567 Added openssl-style ASN.1 macros for Kerberos ticket, ap_req, 7568 and authenticator structs; see crypto/krb5/. 7569 7570 Generalized Kerberos calls to support multiple Kerberos libraries. 7571 [Vern Staats <staatsvr@asc.hpc.mil>, 7572 Jeffrey Altman <jaltman@columbia.edu> 7573 via Richard Levitte] 7574 7575 *) Cause 'openssl speed' to use fully hard-coded DSA keys as it 7576 already does with RSA. testdsa.h now has 'priv_key/pub_key' 7577 values for each of the key sizes rather than having just 7578 parameters (and 'speed' generating keys each time). 7579 [Geoff Thorpe] 7580 7581 *) Speed up EVP routines. 7582 Before: 7583encrypt 7584type 8 bytes 64 bytes 256 bytes 1024 bytes 8192 bytes 7585des-cbc 4408.85k 5560.51k 5778.46k 5862.20k 5825.16k 7586des-cbc 4389.55k 5571.17k 5792.23k 5846.91k 5832.11k 7587des-cbc 4394.32k 5575.92k 5807.44k 5848.37k 5841.30k 7588decrypt 7589des-cbc 3482.66k 5069.49k 5496.39k 5614.16k 5639.28k 7590des-cbc 3480.74k 5068.76k 5510.34k 5609.87k 5635.52k 7591des-cbc 3483.72k 5067.62k 5504.60k 5708.01k 5724.80k 7592 After: 7593encrypt 7594des-cbc 4660.16k 5650.19k 5807.19k 5827.13k 5783.32k 7595decrypt 7596des-cbc 3624.96k 5258.21k 5530.91k 5624.30k 5628.26k 7597 [Ben Laurie] 7598 7599 *) Added the OS2-EMX target. 7600 ["Brian Havard" <brianh@kheldar.apana.org.au> and Richard Levitte] 7601 7602 *) Rewrite apps to use NCONF routines instead of the old CONF. New functions 7603 to support NCONF routines in extension code. New function CONF_set_nconf() 7604 to allow functions which take an NCONF to also handle the old LHASH 7605 structure: this means that the old CONF compatible routines can be 7606 retained (in particular wrt extensions) without having to duplicate the 7607 code. New function X509V3_add_ext_nconf_sk to add extensions to a stack. 7608 [Steve Henson] 7609 7610 *) Enhance the general user interface with mechanisms for inner control 7611 and with possibilities to have yes/no kind of prompts. 7612 [Richard Levitte] 7613 7614 *) Change all calls to low level digest routines in the library and 7615 applications to use EVP. Add missing calls to HMAC_cleanup() and 7616 don't assume HMAC_CTX can be copied using memcpy(). 7617 [Verdon Walker <VWalker@novell.com>, Steve Henson] 7618 7619 *) Add the possibility to control engines through control names but with 7620 arbitrary arguments instead of just a string. 7621 Change the key loaders to take a UI_METHOD instead of a callback 7622 function pointer. NOTE: this breaks binary compatibility with earlier 7623 versions of OpenSSL [engine]. 7624 Adapt the nCipher code for these new conditions and add a card insertion 7625 callback. 7626 [Richard Levitte] 7627 7628 *) Enhance the general user interface with mechanisms to better support 7629 dialog box interfaces, application-defined prompts, the possibility 7630 to use defaults (for example default passwords from somewhere else) 7631 and interrupts/cancellations. 7632 [Richard Levitte] 7633 7634 *) Tidy up PKCS#12 attribute handling. Add support for the CSP name 7635 attribute in PKCS#12 files, add new -CSP option to pkcs12 utility. 7636 [Steve Henson] 7637 7638 *) Fix a memory leak in 'sk_dup()' in the case reallocation fails. (Also 7639 tidy up some unnecessarily weird code in 'sk_new()'). 7640 [Geoff, reported by Diego Tartara <dtartara@novamens.com>] 7641 7642 *) Change the key loading routines for ENGINEs to use the same kind 7643 callback (pem_password_cb) as all other routines that need this 7644 kind of callback. 7645 [Richard Levitte] 7646 7647 *) Increase ENTROPY_NEEDED to 32 bytes, as Rijndael can operate with 7648 256 bit (=32 byte) keys. Of course seeding with more entropy bytes 7649 than this minimum value is recommended. 7650 [Lutz Jaenicke] 7651 7652 *) New random seeder for OpenVMS, using the system process statistics 7653 that are easily reachable. 7654 [Richard Levitte] 7655 7656 *) Windows apparently can't transparently handle global 7657 variables defined in DLLs. Initialisations such as: 7658 7659 const ASN1_ITEM *it = &ASN1_INTEGER_it; 7660 7661 won't compile. This is used by the any applications that need to 7662 declare their own ASN1 modules. This was fixed by adding the option 7663 EXPORT_VAR_AS_FN to all Win32 platforms, although this isn't strictly 7664 needed for static libraries under Win32. 7665 [Steve Henson] 7666 7667 *) New functions X509_PURPOSE_set() and X509_TRUST_set() to handle 7668 setting of purpose and trust fields. New X509_STORE trust and 7669 purpose functions and tidy up setting in other SSL functions. 7670 [Steve Henson] 7671 7672 *) Add copies of X509_STORE_CTX fields and callbacks to X509_STORE 7673 structure. These are inherited by X509_STORE_CTX when it is 7674 initialised. This allows various defaults to be set in the 7675 X509_STORE structure (such as flags for CRL checking and custom 7676 purpose or trust settings) for functions which only use X509_STORE_CTX 7677 internally such as S/MIME. 7678 7679 Modify X509_STORE_CTX_purpose_inherit() so it only sets purposes and 7680 trust settings if they are not set in X509_STORE. This allows X509_STORE 7681 purposes and trust (in S/MIME for example) to override any set by default. 7682 7683 Add command line options for CRL checking to smime, s_client and s_server 7684 applications. 7685 [Steve Henson] 7686 7687 *) Initial CRL based revocation checking. If the CRL checking flag(s) 7688 are set then the CRL is looked up in the X509_STORE structure and 7689 its validity and signature checked, then if the certificate is found 7690 in the CRL the verify fails with a revoked error. 7691 7692 Various new CRL related callbacks added to X509_STORE_CTX structure. 7693 7694 Command line options added to 'verify' application to support this. 7695 7696 This needs some additional work, such as being able to handle multiple 7697 CRLs with different times, extension based lookup (rather than just 7698 by subject name) and ultimately more complete V2 CRL extension 7699 handling. 7700 [Steve Henson] 7701 7702 *) Add a general user interface API (crypto/ui/). This is designed 7703 to replace things like des_read_password and friends (backward 7704 compatibility functions using this new API are provided). 7705 The purpose is to remove prompting functions from the DES code 7706 section as well as provide for prompting through dialog boxes in 7707 a window system and the like. 7708 [Richard Levitte] 7709 7710 *) Add "ex_data" support to ENGINE so implementations can add state at a 7711 per-structure level rather than having to store it globally. 7712 [Geoff] 7713 7714 *) Make it possible for ENGINE structures to be copied when retrieved by 7715 ENGINE_by_id() if the ENGINE specifies a new flag: ENGINE_FLAGS_BY_ID_COPY. 7716 This causes the "original" ENGINE structure to act like a template, 7717 analogous to the RSA vs. RSA_METHOD type of separation. Because of this 7718 operational state can be localised to each ENGINE structure, despite the 7719 fact they all share the same "methods". New ENGINE structures returned in 7720 this case have no functional references and the return value is the single 7721 structural reference. This matches the single structural reference returned 7722 by ENGINE_by_id() normally, when it is incremented on the pre-existing 7723 ENGINE structure. 7724 [Geoff] 7725 7726 *) Fix ASN1 decoder when decoding type ANY and V_ASN1_OTHER: since this 7727 needs to match any other type at all we need to manually clear the 7728 tag cache. 7729 [Steve Henson] 7730 7731 *) Changes to the "openssl engine" utility to include; 7732 - verbosity levels ('-v', '-vv', and '-vvv') that provide information 7733 about an ENGINE's available control commands. 7734 - executing control commands from command line arguments using the 7735 '-pre' and '-post' switches. '-post' is only used if '-t' is 7736 specified and the ENGINE is successfully initialised. The syntax for 7737 the individual commands are colon-separated, for example; 7738 openssl engine chil -pre FORK_CHECK:0 -pre SO_PATH:/lib/test.so 7739 [Geoff] 7740 7741 *) New dynamic control command support for ENGINEs. ENGINEs can now 7742 declare their own commands (numbers), names (strings), descriptions, 7743 and input types for run-time discovery by calling applications. A 7744 subset of these commands are implicitly classed as "executable" 7745 depending on their input type, and only these can be invoked through 7746 the new string-based API function ENGINE_ctrl_cmd_string(). (Eg. this 7747 can be based on user input, config files, etc). The distinction is 7748 that "executable" commands cannot return anything other than a boolean 7749 result and can only support numeric or string input, whereas some 7750 discoverable commands may only be for direct use through 7751 ENGINE_ctrl(), eg. supporting the exchange of binary data, function 7752 pointers, or other custom uses. The "executable" commands are to 7753 support parameterisations of ENGINE behaviour that can be 7754 unambiguously defined by ENGINEs and used consistently across any 7755 OpenSSL-based application. Commands have been added to all the 7756 existing hardware-supporting ENGINEs, noticeably "SO_PATH" to allow 7757 control over shared-library paths without source code alterations. 7758 [Geoff] 7759 7760 *) Changed all ENGINE implementations to dynamically allocate their 7761 ENGINEs rather than declaring them statically. Apart from this being 7762 necessary with the removal of the ENGINE_FLAGS_MALLOCED distinction, 7763 this also allows the implementations to compile without using the 7764 internal engine_int.h header. 7765 [Geoff] 7766 7767 *) Minor adjustment to "rand" code. RAND_get_rand_method() now returns a 7768 'const' value. Any code that should be able to modify a RAND_METHOD 7769 should already have non-const pointers to it (ie. they should only 7770 modify their own ones). 7771 [Geoff] 7772 7773 *) Made a variety of little tweaks to the ENGINE code. 7774 - "atalla" and "ubsec" string definitions were moved from header files 7775 to C code. "nuron" string definitions were placed in variables 7776 rather than hard-coded - allowing parameterisation of these values 7777 later on via ctrl() commands. 7778 - Removed unused "#if 0"'d code. 7779 - Fixed engine list iteration code so it uses ENGINE_free() to release 7780 structural references. 7781 - Constified the RAND_METHOD element of ENGINE structures. 7782 - Constified various get/set functions as appropriate and added 7783 missing functions (including a catch-all ENGINE_cpy that duplicates 7784 all ENGINE values onto a new ENGINE except reference counts/state). 7785 - Removed NULL parameter checks in get/set functions. Setting a method 7786 or function to NULL is a way of cancelling out a previously set 7787 value. Passing a NULL ENGINE parameter is just plain stupid anyway 7788 and doesn't justify the extra error symbols and code. 7789 - Deprecate the ENGINE_FLAGS_MALLOCED define and move the area for 7790 flags from engine_int.h to engine.h. 7791 - Changed prototypes for ENGINE handler functions (init(), finish(), 7792 ctrl(), key-load functions, etc) to take an (ENGINE*) parameter. 7793 [Geoff] 7794 7795 *) Implement binary inversion algorithm for BN_mod_inverse in addition 7796 to the algorithm using long division. The binary algorithm can be 7797 used only if the modulus is odd. On 32-bit systems, it is faster 7798 only for relatively small moduli (roughly 20-30% for 128-bit moduli, 7799 roughly 5-15% for 256-bit moduli), so we use it only for moduli 7800 up to 450 bits. In 64-bit environments, the binary algorithm 7801 appears to be advantageous for much longer moduli; here we use it 7802 for moduli up to 2048 bits. 7803 [Bodo Moeller] 7804 7805 *) Rewrite CHOICE field setting in ASN1_item_ex_d2i(). The old code 7806 could not support the combine flag in choice fields. 7807 [Steve Henson] 7808 7809 *) Add a 'copy_extensions' option to the 'ca' utility. This copies 7810 extensions from a certificate request to the certificate. 7811 [Steve Henson] 7812 7813 *) Allow multiple 'certopt' and 'nameopt' options to be separated 7814 by commas. Add 'namopt' and 'certopt' options to the 'ca' config 7815 file: this allows the display of the certificate about to be 7816 signed to be customised, to allow certain fields to be included 7817 or excluded and extension details. The old system didn't display 7818 multicharacter strings properly, omitted fields not in the policy 7819 and couldn't display additional details such as extensions. 7820 [Steve Henson] 7821 7822 *) Function EC_POINTs_mul for multiple scalar multiplication 7823 of an arbitrary number of elliptic curve points 7824 \sum scalars[i]*points[i], 7825 optionally including the generator defined for the EC_GROUP: 7826 scalar*generator + \sum scalars[i]*points[i]. 7827 7828 EC_POINT_mul is a simple wrapper function for the typical case 7829 that the point list has just one item (besides the optional 7830 generator). 7831 [Bodo Moeller] 7832 7833 *) First EC_METHODs for curves over GF(p): 7834 7835 EC_GFp_simple_method() uses the basic BN_mod_mul and BN_mod_sqr 7836 operations and provides various method functions that can also 7837 operate with faster implementations of modular arithmetic. 7838 7839 EC_GFp_mont_method() reuses most functions that are part of 7840 EC_GFp_simple_method, but uses Montgomery arithmetic. 7841 7842 [Bodo Moeller; point addition and point doubling 7843 implementation directly derived from source code provided by 7844 Lenka Fibikova <fibikova@exp-math.uni-essen.de>] 7845 7846 *) Framework for elliptic curves (crypto/ec/ec.h, crypto/ec/ec_lcl.h, 7847 crypto/ec/ec_lib.c): 7848 7849 Curves are EC_GROUP objects (with an optional group generator) 7850 based on EC_METHODs that are built into the library. 7851 7852 Points are EC_POINT objects based on EC_GROUP objects. 7853 7854 Most of the framework would be able to handle curves over arbitrary 7855 finite fields, but as there are no obvious types for fields other 7856 than GF(p), some functions are limited to that for now. 7857 [Bodo Moeller] 7858 7859 *) Add the -HTTP option to s_server. It is similar to -WWW, but requires 7860 that the file contains a complete HTTP response. 7861 [Richard Levitte] 7862 7863 *) Add the ec directory to mkdef.pl and mkfiles.pl. In mkdef.pl 7864 change the def and num file printf format specifier from "%-40sXXX" 7865 to "%-39s XXX". The latter will always guarantee a space after the 7866 field while the former will cause them to run together if the field 7867 is 40 of more characters long. 7868 [Steve Henson] 7869 7870 *) Constify the cipher and digest 'method' functions and structures 7871 and modify related functions to take constant EVP_MD and EVP_CIPHER 7872 pointers. 7873 [Steve Henson] 7874 7875 *) Hide BN_CTX structure details in bn_lcl.h instead of publishing them 7876 in <openssl/bn.h>. Also further increase BN_CTX_NUM to 32. 7877 [Bodo Moeller] 7878 7879 *) Modify EVP_Digest*() routines so they now return values. Although the 7880 internal software routines can never fail additional hardware versions 7881 might. 7882 [Steve Henson] 7883 7884 *) Clean up crypto/err/err.h and change some error codes to avoid conflicts: 7885 7886 Previously ERR_R_FATAL was too small and coincided with ERR_LIB_PKCS7 7887 (= ERR_R_PKCS7_LIB); it is now 64 instead of 32. 7888 7889 ASN1 error codes 7890 ERR_R_NESTED_ASN1_ERROR 7891 ... 7892 ERR_R_MISSING_ASN1_EOS 7893 were 4 .. 9, conflicting with 7894 ERR_LIB_RSA (= ERR_R_RSA_LIB) 7895 ... 7896 ERR_LIB_PEM (= ERR_R_PEM_LIB). 7897 They are now 58 .. 63 (i.e., just below ERR_R_FATAL). 7898 7899 Add new error code 'ERR_R_INTERNAL_ERROR'. 7900 [Bodo Moeller] 7901 7902 *) Don't overuse locks in crypto/err/err.c: For data retrieval, CRYPTO_r_lock 7903 suffices. 7904 [Bodo Moeller] 7905 7906 *) New option '-subj arg' for 'openssl req' and 'openssl ca'. This 7907 sets the subject name for a new request or supersedes the 7908 subject name in a given request. Formats that can be parsed are 7909 'CN=Some Name, OU=myOU, C=IT' 7910 and 7911 'CN=Some Name/OU=myOU/C=IT'. 7912 7913 Add options '-batch' and '-verbose' to 'openssl req'. 7914 [Massimiliano Pala <madwolf@hackmasters.net>] 7915 7916 *) Introduce the possibility to access global variables through 7917 functions on platform were that's the best way to handle exporting 7918 global variables in shared libraries. To enable this functionality, 7919 one must configure with "EXPORT_VAR_AS_FN" or defined the C macro 7920 "OPENSSL_EXPORT_VAR_AS_FUNCTION" in crypto/opensslconf.h (the latter 7921 is normally done by Configure or something similar). 7922 7923 To implement a global variable, use the macro OPENSSL_IMPLEMENT_GLOBAL 7924 in the source file (foo.c) like this: 7925 7926 OPENSSL_IMPLEMENT_GLOBAL(int,foo)=1; 7927 OPENSSL_IMPLEMENT_GLOBAL(double,bar); 7928 7929 To declare a global variable, use the macros OPENSSL_DECLARE_GLOBAL 7930 and OPENSSL_GLOBAL_REF in the header file (foo.h) like this: 7931 7932 OPENSSL_DECLARE_GLOBAL(int,foo); 7933 #define foo OPENSSL_GLOBAL_REF(foo) 7934 OPENSSL_DECLARE_GLOBAL(double,bar); 7935 #define bar OPENSSL_GLOBAL_REF(bar) 7936 7937 The #defines are very important, and therefore so is including the 7938 header file everywhere where the defined globals are used. 7939 7940 The macro OPENSSL_EXPORT_VAR_AS_FUNCTION also affects the definition 7941 of ASN.1 items, but that structure is a bit different. 7942 7943 The largest change is in util/mkdef.pl which has been enhanced with 7944 better and easier to understand logic to choose which symbols should 7945 go into the Windows .def files as well as a number of fixes and code 7946 cleanup (among others, algorithm keywords are now sorted 7947 lexicographically to avoid constant rewrites). 7948 [Richard Levitte] 7949 7950 *) In BN_div() keep a copy of the sign of 'num' before writing the 7951 result to 'rm' because if rm==num the value will be overwritten 7952 and produce the wrong result if 'num' is negative: this caused 7953 problems with BN_mod() and BN_nnmod(). 7954 [Steve Henson] 7955 7956 *) Function OCSP_request_verify(). This checks the signature on an 7957 OCSP request and verifies the signer certificate. The signer 7958 certificate is just checked for a generic purpose and OCSP request 7959 trust settings. 7960 [Steve Henson] 7961 7962 *) Add OCSP_check_validity() function to check the validity of OCSP 7963 responses. OCSP responses are prepared in real time and may only 7964 be a few seconds old. Simply checking that the current time lies 7965 between thisUpdate and nextUpdate max reject otherwise valid responses 7966 caused by either OCSP responder or client clock inaccuracy. Instead 7967 we allow thisUpdate and nextUpdate to fall within a certain period of 7968 the current time. The age of the response can also optionally be 7969 checked. Two new options -validity_period and -status_age added to 7970 ocsp utility. 7971 [Steve Henson] 7972 7973 *) If signature or public key algorithm is unrecognized print out its 7974 OID rather that just UNKNOWN. 7975 [Steve Henson] 7976 7977 *) Change OCSP_cert_to_id() to tolerate a NULL subject certificate and 7978 OCSP_cert_id_new() a NULL serialNumber. This allows a partial certificate 7979 ID to be generated from the issuer certificate alone which can then be 7980 passed to OCSP_id_issuer_cmp(). 7981 [Steve Henson] 7982 7983 *) New compilation option ASN1_ITEM_FUNCTIONS. This causes the new 7984 ASN1 modules to export functions returning ASN1_ITEM pointers 7985 instead of the ASN1_ITEM structures themselves. This adds several 7986 new macros which allow the underlying ASN1 function/structure to 7987 be accessed transparently. As a result code should not use ASN1_ITEM 7988 references directly (such as &X509_it) but instead use the relevant 7989 macros (such as ASN1_ITEM_rptr(X509)). This option is to allow 7990 use of the new ASN1 code on platforms where exporting structures 7991 is problematical (for example in shared libraries) but exporting 7992 functions returning pointers to structures is not. 7993 [Steve Henson] 7994 7995 *) Add support for overriding the generation of SSL/TLS session IDs. 7996 These callbacks can be registered either in an SSL_CTX or per SSL. 7997 The purpose of this is to allow applications to control, if they wish, 7998 the arbitrary values chosen for use as session IDs, particularly as it 7999 can be useful for session caching in multiple-server environments. A 8000 command-line switch for testing this (and any client code that wishes 8001 to use such a feature) has been added to "s_server". 8002 [Geoff Thorpe, Lutz Jaenicke] 8003 8004 *) Modify mkdef.pl to recognise and parse preprocessor conditionals 8005 of the form '#if defined(...) || defined(...) || ...' and 8006 '#if !defined(...) && !defined(...) && ...'. This also avoids 8007 the growing number of special cases it was previously handling. 8008 [Richard Levitte] 8009 8010 *) Make all configuration macros available for application by making 8011 sure they are available in opensslconf.h, by giving them names starting 8012 with "OPENSSL_" to avoid conflicts with other packages and by making 8013 sure e_os2.h will cover all platform-specific cases together with 8014 opensslconf.h. 8015 Additionally, it is now possible to define configuration/platform- 8016 specific names (called "system identities"). In the C code, these 8017 are prefixed with "OPENSSL_SYSNAME_". e_os2.h will create another 8018 macro with the name beginning with "OPENSSL_SYS_", which is determined 8019 from "OPENSSL_SYSNAME_*" or compiler-specific macros depending on 8020 what is available. 8021 [Richard Levitte] 8022 8023 *) New option -set_serial to 'req' and 'x509' this allows the serial 8024 number to use to be specified on the command line. Previously self 8025 signed certificates were hard coded with serial number 0 and the 8026 CA options of 'x509' had to use a serial number in a file which was 8027 auto incremented. 8028 [Steve Henson] 8029 8030 *) New options to 'ca' utility to support V2 CRL entry extensions. 8031 Currently CRL reason, invalidity date and hold instruction are 8032 supported. Add new CRL extensions to V3 code and some new objects. 8033 [Steve Henson] 8034 8035 *) New function EVP_CIPHER_CTX_set_padding() this is used to 8036 disable standard block padding (aka PKCS#5 padding) in the EVP 8037 API, which was previously mandatory. This means that the data is 8038 not padded in any way and so the total length much be a multiple 8039 of the block size, otherwise an error occurs. 8040 [Steve Henson] 8041 8042 *) Initial (incomplete) OCSP SSL support. 8043 [Steve Henson] 8044 8045 *) New function OCSP_parse_url(). This splits up a URL into its host, 8046 port and path components: primarily to parse OCSP URLs. New -url 8047 option to ocsp utility. 8048 [Steve Henson] 8049 8050 *) New nonce behavior. The return value of OCSP_check_nonce() now 8051 reflects the various checks performed. Applications can decide 8052 whether to tolerate certain situations such as an absent nonce 8053 in a response when one was present in a request: the ocsp application 8054 just prints out a warning. New function OCSP_add1_basic_nonce() 8055 this is to allow responders to include a nonce in a response even if 8056 the request is nonce-less. 8057 [Steve Henson] 8058 8059 *) Disable stdin buffering in load_cert (apps/apps.c) so that no certs are 8060 skipped when using openssl x509 multiple times on a single input file, 8061 e.g. "(openssl x509 -out cert1; openssl x509 -out cert2) <certs". 8062 [Bodo Moeller] 8063 8064 *) Make ASN1_UTCTIME_set_string() and ASN1_GENERALIZEDTIME_set_string() 8065 set string type: to handle setting ASN1_TIME structures. Fix ca 8066 utility to correctly initialize revocation date of CRLs. 8067 [Steve Henson] 8068 8069 *) New option SSL_OP_CIPHER_SERVER_PREFERENCE allows the server to override 8070 the clients preferred ciphersuites and rather use its own preferences. 8071 Should help to work around M$ SGC (Server Gated Cryptography) bug in 8072 Internet Explorer by ensuring unchanged hash method during stepup. 8073 (Also replaces the broken/deactivated SSL_OP_NON_EXPORT_FIRST option.) 8074 [Lutz Jaenicke] 8075 8076 *) Make mkdef.pl recognise all DECLARE_ASN1 macros, change rijndael 8077 to aes and add a new 'exist' option to print out symbols that don't 8078 appear to exist. 8079 [Steve Henson] 8080 8081 *) Additional options to ocsp utility to allow flags to be set and 8082 additional certificates supplied. 8083 [Steve Henson] 8084 8085 *) Add the option -VAfile to 'openssl ocsp', so the user can give the 8086 OCSP client a number of certificate to only verify the response 8087 signature against. 8088 [Richard Levitte] 8089 8090 *) Update Rijndael code to version 3.0 and change EVP AES ciphers to 8091 handle the new API. Currently only ECB, CBC modes supported. Add new 8092 AES OIDs. 8093 8094 Add TLS AES ciphersuites as described in RFC3268, "Advanced 8095 Encryption Standard (AES) Ciphersuites for Transport Layer 8096 Security (TLS)". (In beta versions of OpenSSL 0.9.7, these were 8097 not enabled by default and were not part of the "ALL" ciphersuite 8098 alias because they were not yet official; they could be 8099 explicitly requested by specifying the "AESdraft" ciphersuite 8100 group alias. In the final release of OpenSSL 0.9.7, the group 8101 alias is called "AES" and is part of "ALL".) 8102 [Ben Laurie, Steve Henson, Bodo Moeller] 8103 8104 *) New function OCSP_copy_nonce() to copy nonce value (if present) from 8105 request to response. 8106 [Steve Henson] 8107 8108 *) Functions for OCSP responders. OCSP_request_onereq_count(), 8109 OCSP_request_onereq_get0(), OCSP_onereq_get0_id() and OCSP_id_get0_info() 8110 extract information from a certificate request. OCSP_response_create() 8111 creates a response and optionally adds a basic response structure. 8112 OCSP_basic_add1_status() adds a complete single response to a basic 8113 response and returns the OCSP_SINGLERESP structure just added (to allow 8114 extensions to be included for example). OCSP_basic_add1_cert() adds a 8115 certificate to a basic response and OCSP_basic_sign() signs a basic 8116 response with various flags. New helper functions ASN1_TIME_check() 8117 (checks validity of ASN1_TIME structure) and ASN1_TIME_to_generalizedtime() 8118 (converts ASN1_TIME to GeneralizedTime). 8119 [Steve Henson] 8120 8121 *) Various new functions. EVP_Digest() combines EVP_Digest{Init,Update,Final}() 8122 in a single operation. X509_get0_pubkey_bitstr() extracts the public_key 8123 structure from a certificate. X509_pubkey_digest() digests the public_key 8124 contents: this is used in various key identifiers. 8125 [Steve Henson] 8126 8127 *) Make sk_sort() tolerate a NULL argument. 8128 [Steve Henson reported by Massimiliano Pala <madwolf@comune.modena.it>] 8129 8130 *) New OCSP verify flag OCSP_TRUSTOTHER. When set the "other" certificates 8131 passed by the function are trusted implicitly. If any of them signed the 8132 response then it is assumed to be valid and is not verified. 8133 [Steve Henson] 8134 8135 *) In PKCS7_set_type() initialise content_type in PKCS7_ENC_CONTENT 8136 to data. This was previously part of the PKCS7 ASN1 code. This 8137 was causing problems with OpenSSL created PKCS#12 and PKCS#7 structures. 8138 [Steve Henson, reported by Kenneth R. Robinette 8139 <support@securenetterm.com>] 8140 8141 *) Add CRYPTO_push_info() and CRYPTO_pop_info() calls to new ASN1 8142 routines: without these tracing memory leaks is very painful. 8143 Fix leaks in PKCS12 and PKCS7 routines. 8144 [Steve Henson] 8145 8146 *) Make X509_time_adj() cope with the new behaviour of ASN1_TIME_new(). 8147 Previously it initialised the 'type' argument to V_ASN1_UTCTIME which 8148 effectively meant GeneralizedTime would never be used. Now it 8149 is initialised to -1 but X509_time_adj() now has to check the value 8150 and use ASN1_TIME_set() if the value is not V_ASN1_UTCTIME or 8151 V_ASN1_GENERALIZEDTIME, without this it always uses GeneralizedTime. 8152 [Steve Henson, reported by Kenneth R. Robinette 8153 <support@securenetterm.com>] 8154 8155 *) Fixes to BN_to_ASN1_INTEGER when bn is zero. This would previously 8156 result in a zero length in the ASN1_INTEGER structure which was 8157 not consistent with the structure when d2i_ASN1_INTEGER() was used 8158 and would cause ASN1_INTEGER_cmp() to fail. Enhance s2i_ASN1_INTEGER() 8159 to cope with hex and negative integers. Fix bug in i2a_ASN1_INTEGER() 8160 where it did not print out a minus for negative ASN1_INTEGER. 8161 [Steve Henson] 8162 8163 *) Add summary printout to ocsp utility. The various functions which 8164 convert status values to strings have been renamed to: 8165 OCSP_response_status_str(), OCSP_cert_status_str() and 8166 OCSP_crl_reason_str() and are no longer static. New options 8167 to verify nonce values and to disable verification. OCSP response 8168 printout format cleaned up. 8169 [Steve Henson] 8170 8171 *) Add additional OCSP certificate checks. These are those specified 8172 in RFC2560. This consists of two separate checks: the CA of the 8173 certificate being checked must either be the OCSP signer certificate 8174 or the issuer of the OCSP signer certificate. In the latter case the 8175 OCSP signer certificate must contain the OCSP signing extended key 8176 usage. This check is performed by attempting to match the OCSP 8177 signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash 8178 in the OCSP_CERTID structures of the response. 8179 [Steve Henson] 8180 8181 *) Initial OCSP certificate verification added to OCSP_basic_verify() 8182 and related routines. This uses the standard OpenSSL certificate 8183 verify routines to perform initial checks (just CA validity) and 8184 to obtain the certificate chain. Then additional checks will be 8185 performed on the chain. Currently the root CA is checked to see 8186 if it is explicitly trusted for OCSP signing. This is used to set 8187 a root CA as a global signing root: that is any certificate that 8188 chains to that CA is an acceptable OCSP signing certificate. 8189 [Steve Henson] 8190 8191 *) New '-extfile ...' option to 'openssl ca' for reading X.509v3 8192 extensions from a separate configuration file. 8193 As when reading extensions from the main configuration file, 8194 the '-extensions ...' option may be used for specifying the 8195 section to use. 8196 [Massimiliano Pala <madwolf@comune.modena.it>] 8197 8198 *) New OCSP utility. Allows OCSP requests to be generated or 8199 read. The request can be sent to a responder and the output 8200 parsed, outputed or printed in text form. Not complete yet: 8201 still needs to check the OCSP response validity. 8202 [Steve Henson] 8203 8204 *) New subcommands for 'openssl ca': 8205 'openssl ca -status <serial>' prints the status of the cert with 8206 the given serial number (according to the index file). 8207 'openssl ca -updatedb' updates the expiry status of certificates 8208 in the index file. 8209 [Massimiliano Pala <madwolf@comune.modena.it>] 8210 8211 *) New '-newreq-nodes' command option to CA.pl. This is like 8212 '-newreq', but calls 'openssl req' with the '-nodes' option 8213 so that the resulting key is not encrypted. 8214 [Damien Miller <djm@mindrot.org>] 8215 8216 *) New configuration for the GNU Hurd. 8217 [Jonathan Bartlett <johnnyb@wolfram.com> via Richard Levitte] 8218 8219 *) Initial code to implement OCSP basic response verify. This 8220 is currently incomplete. Currently just finds the signer's 8221 certificate and verifies the signature on the response. 8222 [Steve Henson] 8223 8224 *) New SSLeay_version code SSLEAY_DIR to determine the compiled-in 8225 value of OPENSSLDIR. This is available via the new '-d' option 8226 to 'openssl version', and is also included in 'openssl version -a'. 8227 [Bodo Moeller] 8228 8229 *) Allowing defining memory allocation callbacks that will be given 8230 file name and line number information in additional arguments 8231 (a const char* and an int). The basic functionality remains, as 8232 well as the original possibility to just replace malloc(), 8233 realloc() and free() by functions that do not know about these 8234 additional arguments. To register and find out the current 8235 settings for extended allocation functions, the following 8236 functions are provided: 8237 8238 CRYPTO_set_mem_ex_functions 8239 CRYPTO_set_locked_mem_ex_functions 8240 CRYPTO_get_mem_ex_functions 8241 CRYPTO_get_locked_mem_ex_functions 8242 8243 These work the same way as CRYPTO_set_mem_functions and friends. 8244 CRYPTO_get_[locked_]mem_functions now writes 0 where such an 8245 extended allocation function is enabled. 8246 Similarly, CRYPTO_get_[locked_]mem_ex_functions writes 0 where 8247 a conventional allocation function is enabled. 8248 [Richard Levitte, Bodo Moeller] 8249 8250 *) Finish off removing the remaining LHASH function pointer casts. 8251 There should no longer be any prototype-casting required when using 8252 the LHASH abstraction, and any casts that remain are "bugs". See 8253 the callback types and macros at the head of lhash.h for details 8254 (and "OBJ_cleanup" in crypto/objects/obj_dat.c as an example). 8255 [Geoff Thorpe] 8256 8257 *) Add automatic query of EGD sockets in RAND_poll() for the unix variant. 8258 If /dev/[u]random devices are not available or do not return enough 8259 entropy, EGD style sockets (served by EGD or PRNGD) will automatically 8260 be queried. 8261 The locations /var/run/egd-pool, /dev/egd-pool, /etc/egd-pool, and 8262 /etc/entropy will be queried once each in this sequence, querying stops 8263 when enough entropy was collected without querying more sockets. 8264 [Lutz Jaenicke] 8265 8266 *) Change the Unix RAND_poll() variant to be able to poll several 8267 random devices, as specified by DEVRANDOM, until a sufficient amount 8268 of data has been collected. We spend at most 10 ms on each file 8269 (select timeout) and read in non-blocking mode. DEVRANDOM now 8270 defaults to the list "/dev/urandom", "/dev/random", "/dev/srandom" 8271 (previously it was just the string "/dev/urandom"), so on typical 8272 platforms the 10 ms delay will never occur. 8273 Also separate out the Unix variant to its own file, rand_unix.c. 8274 For VMS, there's a currently-empty rand_vms.c. 8275 [Richard Levitte] 8276 8277 *) Move OCSP client related routines to ocsp_cl.c. These 8278 provide utility functions which an application needing 8279 to issue a request to an OCSP responder and analyse the 8280 response will typically need: as opposed to those which an 8281 OCSP responder itself would need which will be added later. 8282 8283 OCSP_request_sign() signs an OCSP request with an API similar 8284 to PKCS7_sign(). OCSP_response_status() returns status of OCSP 8285 response. OCSP_response_get1_basic() extracts basic response 8286 from response. OCSP_resp_find_status(): finds and extracts status 8287 information from an OCSP_CERTID structure (which will be created 8288 when the request structure is built). These are built from lower 8289 level functions which work on OCSP_SINGLERESP structures but 8290 won't normally be used unless the application wishes to examine 8291 extensions in the OCSP response for example. 8292 8293 Replace nonce routines with a pair of functions. 8294 OCSP_request_add1_nonce() adds a nonce value and optionally 8295 generates a random value. OCSP_check_nonce() checks the 8296 validity of the nonce in an OCSP response. 8297 [Steve Henson] 8298 8299 *) Change function OCSP_request_add() to OCSP_request_add0_id(). 8300 This doesn't copy the supplied OCSP_CERTID and avoids the 8301 need to free up the newly created id. Change return type 8302 to OCSP_ONEREQ to return the internal OCSP_ONEREQ structure. 8303 This can then be used to add extensions to the request. 8304 Deleted OCSP_request_new(), since most of its functionality 8305 is now in OCSP_REQUEST_new() (and the case insensitive name 8306 clash) apart from the ability to set the request name which 8307 will be added elsewhere. 8308 [Steve Henson] 8309 8310 *) Update OCSP API. Remove obsolete extensions argument from 8311 various functions. Extensions are now handled using the new 8312 OCSP extension code. New simple OCSP HTTP function which 8313 can be used to send requests and parse the response. 8314 [Steve Henson] 8315 8316 *) Fix the PKCS#7 (S/MIME) code to work with new ASN1. Two new 8317 ASN1_ITEM structures help with sign and verify. PKCS7_ATTR_SIGN 8318 uses the special reorder version of SET OF to sort the attributes 8319 and reorder them to match the encoded order. This resolves a long 8320 standing problem: a verify on a PKCS7 structure just after signing 8321 it used to fail because the attribute order did not match the 8322 encoded order. PKCS7_ATTR_VERIFY does not reorder the attributes: 8323 it uses the received order. This is necessary to tolerate some broken 8324 software that does not order SET OF. This is handled by encoding 8325 as a SEQUENCE OF but using implicit tagging (with UNIVERSAL class) 8326 to produce the required SET OF. 8327 [Steve Henson] 8328 8329 *) Have mk1mf.pl generate the macros OPENSSL_BUILD_SHLIBCRYPTO and 8330 OPENSSL_BUILD_SHLIBSSL and use them appropriately in the header 8331 files to get correct declarations of the ASN.1 item variables. 8332 [Richard Levitte] 8333 8334 *) Rewrite of PKCS#12 code to use new ASN1 functionality. Replace many 8335 PKCS#12 macros with real functions. Fix two unrelated ASN1 bugs: 8336 asn1_check_tlen() would sometimes attempt to use 'ctx' when it was 8337 NULL and ASN1_TYPE was not dereferenced properly in asn1_ex_c2i(). 8338 New ASN1 macro: DECLARE_ASN1_ITEM() which just declares the relevant 8339 ASN1_ITEM and no wrapper functions. 8340 [Steve Henson] 8341 8342 *) New functions or ASN1_item_d2i_fp() and ASN1_item_d2i_bio(). These 8343 replace the old function pointer based I/O routines. Change most of 8344 the *_d2i_bio() and *_d2i_fp() functions to use these. 8345 [Steve Henson] 8346 8347 *) Enhance mkdef.pl to be more accepting about spacing in C preprocessor 8348 lines, recognize more "algorithms" that can be deselected, and make 8349 it complain about algorithm deselection that isn't recognised. 8350 [Richard Levitte] 8351 8352 *) New ASN1 functions to handle dup, sign, verify, digest, pack and 8353 unpack operations in terms of ASN1_ITEM. Modify existing wrappers 8354 to use new functions. Add NO_ASN1_OLD which can be set to remove 8355 some old style ASN1 functions: this can be used to determine if old 8356 code will still work when these eventually go away. 8357 [Steve Henson] 8358 8359 *) New extension functions for OCSP structures, these follow the 8360 same conventions as certificates and CRLs. 8361 [Steve Henson] 8362 8363 *) New function X509V3_add1_i2d(). This automatically encodes and 8364 adds an extension. Its behaviour can be customised with various 8365 flags to append, replace or delete. Various wrappers added for 8366 certificates and CRLs. 8367 [Steve Henson] 8368 8369 *) Fix to avoid calling the underlying ASN1 print routine when 8370 an extension cannot be parsed. Correct a typo in the 8371 OCSP_SERVICELOC extension. Tidy up print OCSP format. 8372 [Steve Henson] 8373 8374 *) Make mkdef.pl parse some of the ASN1 macros and add appropriate 8375 entries for variables. 8376 [Steve Henson] 8377 8378 *) Add functionality to apps/openssl.c for detecting locking 8379 problems: As the program is single-threaded, all we have 8380 to do is register a locking callback using an array for 8381 storing which locks are currently held by the program. 8382 [Bodo Moeller] 8383 8384 *) Use a lock around the call to CRYPTO_get_ex_new_index() in 8385 SSL_get_ex_data_X509_STORE_idx(), which is used in 8386 ssl_verify_cert_chain() and thus can be called at any time 8387 during TLS/SSL handshakes so that thread-safety is essential. 8388 Unfortunately, the ex_data design is not at all suited 8389 for multi-threaded use, so it probably should be abolished. 8390 [Bodo Moeller] 8391 8392 *) Added Broadcom "ubsec" ENGINE to OpenSSL. 8393 [Broadcom, tweaked and integrated by Geoff Thorpe] 8394 8395 *) Move common extension printing code to new function 8396 X509V3_print_extensions(). Reorganise OCSP print routines and 8397 implement some needed OCSP ASN1 functions. Add OCSP extensions. 8398 [Steve Henson] 8399 8400 *) New function X509_signature_print() to remove duplication in some 8401 print routines. 8402 [Steve Henson] 8403 8404 *) Add a special meaning when SET OF and SEQUENCE OF flags are both 8405 set (this was treated exactly the same as SET OF previously). This 8406 is used to reorder the STACK representing the structure to match the 8407 encoding. This will be used to get round a problem where a PKCS7 8408 structure which was signed could not be verified because the STACK 8409 order did not reflect the encoded order. 8410 [Steve Henson] 8411 8412 *) Reimplement the OCSP ASN1 module using the new code. 8413 [Steve Henson] 8414 8415 *) Update the X509V3 code to permit the use of an ASN1_ITEM structure 8416 for its ASN1 operations. The old style function pointers still exist 8417 for now but they will eventually go away. 8418 [Steve Henson] 8419 8420 *) Merge in replacement ASN1 code from the ASN1 branch. This almost 8421 completely replaces the old ASN1 functionality with a table driven 8422 encoder and decoder which interprets an ASN1_ITEM structure describing 8423 the ASN1 module. Compatibility with the existing ASN1 API (i2d,d2i) is 8424 largely maintained. Almost all of the old asn1_mac.h macro based ASN1 8425 has also been converted to the new form. 8426 [Steve Henson] 8427 8428 *) Change BN_mod_exp_recp so that negative moduli are tolerated 8429 (the sign is ignored). Similarly, ignore the sign in BN_MONT_CTX_set 8430 so that BN_mod_exp_mont and BN_mod_exp_mont_word work 8431 for negative moduli. 8432 [Bodo Moeller] 8433 8434 *) Fix BN_uadd and BN_usub: Always return non-negative results instead 8435 of not touching the result's sign bit. 8436 [Bodo Moeller] 8437 8438 *) BN_div bugfix: If the result is 0, the sign (res->neg) must not be 8439 set. 8440 [Bodo Moeller] 8441 8442 *) Changed the LHASH code to use prototypes for callbacks, and created 8443 macros to declare and implement thin (optionally static) functions 8444 that provide type-safety and avoid function pointer casting for the 8445 type-specific callbacks. 8446 [Geoff Thorpe] 8447 8448 *) Added Kerberos Cipher Suites to be used with TLS, as written in 8449 RFC 2712. 8450 [Veers Staats <staatsvr@asc.hpc.mil>, 8451 Jeffrey Altman <jaltman@columbia.edu>, via Richard Levitte] 8452 8453 *) Reformat the FAQ so the different questions and answers can be divided 8454 in sections depending on the subject. 8455 [Richard Levitte] 8456 8457 *) Have the zlib compression code load ZLIB.DLL dynamically under 8458 Windows. 8459 [Richard Levitte] 8460 8461 *) New function BN_mod_sqrt for computing square roots modulo a prime 8462 (using the probabilistic Tonelli-Shanks algorithm unless 8463 p == 3 (mod 4) or p == 5 (mod 8), which are cases that can 8464 be handled deterministically). 8465 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 8466 8467 *) Make BN_mod_inverse faster by explicitly handling small quotients 8468 in the Euclid loop. (Speed gain about 20% for small moduli [256 or 8469 512 bits], about 30% for larger ones [1024 or 2048 bits].) 8470 [Bodo Moeller] 8471 8472 *) New function BN_kronecker. 8473 [Bodo Moeller] 8474 8475 *) Fix BN_gcd so that it works on negative inputs; the result is 8476 positive unless both parameters are zero. 8477 Previously something reasonably close to an infinite loop was 8478 possible because numbers could be growing instead of shrinking 8479 in the implementation of Euclid's algorithm. 8480 [Bodo Moeller] 8481 8482 *) Fix BN_is_word() and BN_is_one() macros to take into account the 8483 sign of the number in question. 8484 8485 Fix BN_is_word(a,w) to work correctly for w == 0. 8486 8487 The old BN_is_word(a,w) macro is now called BN_abs_is_word(a,w) 8488 because its test if the absolute value of 'a' equals 'w'. 8489 Note that BN_abs_is_word does *not* handle w == 0 reliably; 8490 it exists mostly for use in the implementations of BN_is_zero(), 8491 BN_is_one(), and BN_is_word(). 8492 [Bodo Moeller] 8493 8494 *) New function BN_swap. 8495 [Bodo Moeller] 8496 8497 *) Use BN_nnmod instead of BN_mod in crypto/bn/bn_exp.c so that 8498 the exponentiation functions are more likely to produce reasonable 8499 results on negative inputs. 8500 [Bodo Moeller] 8501 8502 *) Change BN_mod_mul so that the result is always non-negative. 8503 Previously, it could be negative if one of the factors was negative; 8504 I don't think anyone really wanted that behaviour. 8505 [Bodo Moeller] 8506 8507 *) Move BN_mod_... functions into new file crypto/bn/bn_mod.c 8508 (except for exponentiation, which stays in crypto/bn/bn_exp.c, 8509 and BN_mod_mul_reciprocal, which stays in crypto/bn/bn_recp.c) 8510 and add new functions: 8511 8512 BN_nnmod 8513 BN_mod_sqr 8514 BN_mod_add 8515 BN_mod_add_quick 8516 BN_mod_sub 8517 BN_mod_sub_quick 8518 BN_mod_lshift1 8519 BN_mod_lshift1_quick 8520 BN_mod_lshift 8521 BN_mod_lshift_quick 8522 8523 These functions always generate non-negative results. 8524 8525 BN_nnmod otherwise is like BN_mod (if BN_mod computes a remainder r 8526 such that |m| < r < 0, BN_nnmod will output rem + |m| instead). 8527 8528 BN_mod_XXX_quick(r, a, [b,] m) generates the same result as 8529 BN_mod_XXX(r, a, [b,] m, ctx), but requires that a [and b] 8530 be reduced modulo m. 8531 [Lenka Fibikova <fibikova@exp-math.uni-essen.de>, Bodo Moeller] 8532 8533#if 0 8534 The following entry accidentally appeared in the CHANGES file 8535 distributed with OpenSSL 0.9.7. The modifications described in 8536 it do *not* apply to OpenSSL 0.9.7. 8537 8538 *) Remove a few calls to bn_wexpand() in BN_sqr() (the one in there 8539 was actually never needed) and in BN_mul(). The removal in BN_mul() 8540 required a small change in bn_mul_part_recursive() and the addition 8541 of the functions bn_cmp_part_words(), bn_sub_part_words() and 8542 bn_add_part_words(), which do the same thing as bn_cmp_words(), 8543 bn_sub_words() and bn_add_words() except they take arrays with 8544 differing sizes. 8545 [Richard Levitte] 8546#endif 8547 8548 *) In 'openssl passwd', verify passwords read from the terminal 8549 unless the '-salt' option is used (which usually means that 8550 verification would just waste user's time since the resulting 8551 hash is going to be compared with some given password hash) 8552 or the new '-noverify' option is used. 8553 8554 This is an incompatible change, but it does not affect 8555 non-interactive use of 'openssl passwd' (passwords on the command 8556 line, '-stdin' option, '-in ...' option) and thus should not 8557 cause any problems. 8558 [Bodo Moeller] 8559 8560 *) Remove all references to RSAref, since there's no more need for it. 8561 [Richard Levitte] 8562 8563 *) Make DSO load along a path given through an environment variable 8564 (SHLIB_PATH) with shl_load(). 8565 [Richard Levitte] 8566 8567 *) Constify the ENGINE code as a result of BIGNUM constification. 8568 Also constify the RSA code and most things related to it. In a 8569 few places, most notable in the depth of the ASN.1 code, ugly 8570 casts back to non-const were required (to be solved at a later 8571 time) 8572 [Richard Levitte] 8573 8574 *) Make it so the openssl application has all engines loaded by default. 8575 [Richard Levitte] 8576 8577 *) Constify the BIGNUM routines a little more. 8578 [Richard Levitte] 8579 8580 *) Add the following functions: 8581 8582 ENGINE_load_cswift() 8583 ENGINE_load_chil() 8584 ENGINE_load_atalla() 8585 ENGINE_load_nuron() 8586 ENGINE_load_builtin_engines() 8587 8588 That way, an application can itself choose if external engines that 8589 are built-in in OpenSSL shall ever be used or not. The benefit is 8590 that applications won't have to be linked with libdl or other dso 8591 libraries unless it's really needed. 8592 8593 Changed 'openssl engine' to load all engines on demand. 8594 Changed the engine header files to avoid the duplication of some 8595 declarations (they differed!). 8596 [Richard Levitte] 8597 8598 *) 'openssl engine' can now list capabilities. 8599 [Richard Levitte] 8600 8601 *) Better error reporting in 'openssl engine'. 8602 [Richard Levitte] 8603 8604 *) Never call load_dh_param(NULL) in s_server. 8605 [Bodo Moeller] 8606 8607 *) Add engine application. It can currently list engines by name and 8608 identity, and test if they are actually available. 8609 [Richard Levitte] 8610 8611 *) Improve RPM specification file by forcing symbolic linking and making 8612 sure the installed documentation is also owned by root.root. 8613 [Damien Miller <djm@mindrot.org>] 8614 8615 *) Give the OpenSSL applications more possibilities to make use of 8616 keys (public as well as private) handled by engines. 8617 [Richard Levitte] 8618 8619 *) Add OCSP code that comes from CertCo. 8620 [Richard Levitte] 8621 8622 *) Add VMS support for the Rijndael code. 8623 [Richard Levitte] 8624 8625 *) Added untested support for Nuron crypto accelerator. 8626 [Ben Laurie] 8627 8628 *) Add support for external cryptographic devices. This code was 8629 previously distributed separately as the "engine" branch. 8630 [Geoff Thorpe, Richard Levitte] 8631 8632 *) Rework the filename-translation in the DSO code. It is now possible to 8633 have far greater control over how a "name" is turned into a filename 8634 depending on the operating environment and any oddities about the 8635 different shared library filenames on each system. 8636 [Geoff Thorpe] 8637 8638 *) Support threads on FreeBSD-elf in Configure. 8639 [Richard Levitte] 8640 8641 *) Fix for SHA1 assembly problem with MASM: it produces 8642 warnings about corrupt line number information when assembling 8643 with debugging information. This is caused by the overlapping 8644 of two sections. 8645 [Bernd Matthes <mainbug@celocom.de>, Steve Henson] 8646 8647 *) NCONF changes. 8648 NCONF_get_number() has no error checking at all. As a replacement, 8649 NCONF_get_number_e() is defined (_e for "error checking") and is 8650 promoted strongly. The old NCONF_get_number is kept around for 8651 binary backward compatibility. 8652 Make it possible for methods to load from something other than a BIO, 8653 by providing a function pointer that is given a name instead of a BIO. 8654 For example, this could be used to load configuration data from an 8655 LDAP server. 8656 [Richard Levitte] 8657 8658 *) Fix for non blocking accept BIOs. Added new I/O special reason 8659 BIO_RR_ACCEPT to cover this case. Previously use of accept BIOs 8660 with non blocking I/O was not possible because no retry code was 8661 implemented. Also added new SSL code SSL_WANT_ACCEPT to cover 8662 this case. 8663 [Steve Henson] 8664 8665 *) Added the beginnings of Rijndael support. 8666 [Ben Laurie] 8667 8668 *) Fix for bug in DirectoryString mask setting. Add support for 8669 X509_NAME_print_ex() in 'req' and X509_print_ex() function 8670 to allow certificate printing to more controllable, additional 8671 'certopt' option to 'x509' to allow new printing options to be 8672 set. 8673 [Steve Henson] 8674 8675 *) Clean old EAY MD5 hack from e_os.h. 8676 [Richard Levitte] 8677 8678 Changes between 0.9.6l and 0.9.6m [17 Mar 2004] 8679 8680 *) Fix null-pointer assignment in do_change_cipher_spec() revealed 8681 by using the Codenomicon TLS Test Tool (CVE-2004-0079) 8682 [Joe Orton, Steve Henson] 8683 8684 Changes between 0.9.6k and 0.9.6l [04 Nov 2003] 8685 8686 *) Fix additional bug revealed by the NISCC test suite: 8687 8688 Stop bug triggering large recursion when presented with 8689 certain ASN.1 tags (CVE-2003-0851) 8690 [Steve Henson] 8691 8692 Changes between 0.9.6j and 0.9.6k [30 Sep 2003] 8693 8694 *) Fix various bugs revealed by running the NISCC test suite: 8695 8696 Stop out of bounds reads in the ASN1 code when presented with 8697 invalid tags (CVE-2003-0543 and CVE-2003-0544). 8698 8699 If verify callback ignores invalid public key errors don't try to check 8700 certificate signature with the NULL public key. 8701 8702 [Steve Henson] 8703 8704 *) In ssl3_accept() (ssl/s3_srvr.c) only accept a client certificate 8705 if the server requested one: as stated in TLS 1.0 and SSL 3.0 8706 specifications. 8707 [Steve Henson] 8708 8709 *) In ssl3_get_client_hello() (ssl/s3_srvr.c), tolerate additional 8710 extra data after the compression methods not only for TLS 1.0 8711 but also for SSL 3.0 (as required by the specification). 8712 [Bodo Moeller; problem pointed out by Matthias Loepfe] 8713 8714 *) Change X509_certificate_type() to mark the key as exported/exportable 8715 when it's 512 *bits* long, not 512 bytes. 8716 [Richard Levitte] 8717 8718 Changes between 0.9.6i and 0.9.6j [10 Apr 2003] 8719 8720 *) Countermeasure against the Klima-Pokorny-Rosa extension of 8721 Bleichbacher's attack on PKCS #1 v1.5 padding: treat 8722 a protocol version number mismatch like a decryption error 8723 in ssl3_get_client_key_exchange (ssl/s3_srvr.c). 8724 [Bodo Moeller] 8725 8726 *) Turn on RSA blinding by default in the default implementation 8727 to avoid a timing attack. Applications that don't want it can call 8728 RSA_blinding_off() or use the new flag RSA_FLAG_NO_BLINDING. 8729 They would be ill-advised to do so in most cases. 8730 [Ben Laurie, Steve Henson, Geoff Thorpe, Bodo Moeller] 8731 8732 *) Change RSA blinding code so that it works when the PRNG is not 8733 seeded (in this case, the secret RSA exponent is abused as 8734 an unpredictable seed -- if it is not unpredictable, there 8735 is no point in blinding anyway). Make RSA blinding thread-safe 8736 by remembering the creator's thread ID in rsa->blinding and 8737 having all other threads use local one-time blinding factors 8738 (this requires more computation than sharing rsa->blinding, but 8739 avoids excessive locking; and if an RSA object is not shared 8740 between threads, blinding will still be very fast). 8741 [Bodo Moeller] 8742 8743 Changes between 0.9.6h and 0.9.6i [19 Feb 2003] 8744 8745 *) In ssl3_get_record (ssl/s3_pkt.c), minimize information leaked 8746 via timing by performing a MAC computation even if incorrect 8747 block cipher padding has been found. This is a countermeasure 8748 against active attacks where the attacker has to distinguish 8749 between bad padding and a MAC verification error. (CVE-2003-0078) 8750 8751 [Bodo Moeller; problem pointed out by Brice Canvel (EPFL), 8752 Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and 8753 Martin Vuagnoux (EPFL, Ilion)] 8754 8755 Changes between 0.9.6g and 0.9.6h [5 Dec 2002] 8756 8757 *) New function OPENSSL_cleanse(), which is used to cleanse a section of 8758 memory from it's contents. This is done with a counter that will 8759 place alternating values in each byte. This can be used to solve 8760 two issues: 1) the removal of calls to memset() by highly optimizing 8761 compilers, and 2) cleansing with other values than 0, since those can 8762 be read through on certain media, for example a swap space on disk. 8763 [Geoff Thorpe] 8764 8765 *) Bugfix: client side session caching did not work with external caching, 8766 because the session->cipher setting was not restored when reloading 8767 from the external cache. This problem was masked, when 8768 SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG (part of SSL_OP_ALL) was set. 8769 (Found by Steve Haslam <steve@araqnid.ddts.net>.) 8770 [Lutz Jaenicke] 8771 8772 *) Fix client_certificate (ssl/s2_clnt.c): The permissible total 8773 length of the REQUEST-CERTIFICATE message is 18 .. 34, not 17 .. 33. 8774 [Zeev Lieber <zeev-l@yahoo.com>] 8775 8776 *) Undo an undocumented change introduced in 0.9.6e which caused 8777 repeated calls to OpenSSL_add_all_ciphers() and 8778 OpenSSL_add_all_digests() to be ignored, even after calling 8779 EVP_cleanup(). 8780 [Richard Levitte] 8781 8782 *) Change the default configuration reader to deal with last line not 8783 being properly terminated. 8784 [Richard Levitte] 8785 8786 *) Change X509_NAME_cmp() so it applies the special rules on handling 8787 DN values that are of type PrintableString, as well as RDNs of type 8788 emailAddress where the value has the type ia5String. 8789 [stefank@valicert.com via Richard Levitte] 8790 8791 *) Add a SSL_SESS_CACHE_NO_INTERNAL_STORE flag to take over half 8792 the job SSL_SESS_CACHE_NO_INTERNAL_LOOKUP was inconsistently 8793 doing, define a new flag (SSL_SESS_CACHE_NO_INTERNAL) to be 8794 the bitwise-OR of the two for use by the majority of applications 8795 wanting this behaviour, and update the docs. The documented 8796 behaviour and actual behaviour were inconsistent and had been 8797 changing anyway, so this is more a bug-fix than a behavioural 8798 change. 8799 [Geoff Thorpe, diagnosed by Nadav Har'El] 8800 8801 *) Don't impose a 16-byte length minimum on session IDs in ssl/s3_clnt.c 8802 (the SSL 3.0 and TLS 1.0 specifications allow any length up to 32 bytes). 8803 [Bodo Moeller] 8804 8805 *) Fix initialization code race conditions in 8806 SSLv23_method(), SSLv23_client_method(), SSLv23_server_method(), 8807 SSLv2_method(), SSLv2_client_method(), SSLv2_server_method(), 8808 SSLv3_method(), SSLv3_client_method(), SSLv3_server_method(), 8809 TLSv1_method(), TLSv1_client_method(), TLSv1_server_method(), 8810 ssl2_get_cipher_by_char(), 8811 ssl3_get_cipher_by_char(). 8812 [Patrick McCormick <patrick@tellme.com>, Bodo Moeller] 8813 8814 *) Reorder cleanup sequence in SSL_CTX_free(): only remove the ex_data after 8815 the cached sessions are flushed, as the remove_cb() might use ex_data 8816 contents. Bug found by Sam Varshavchik <mrsam@courier-mta.com> 8817 (see [openssl.org #212]). 8818 [Geoff Thorpe, Lutz Jaenicke] 8819 8820 *) Fix typo in OBJ_txt2obj which incorrectly passed the content 8821 length, instead of the encoding length to d2i_ASN1_OBJECT. 8822 [Steve Henson] 8823 8824 Changes between 0.9.6f and 0.9.6g [9 Aug 2002] 8825 8826 *) [In 0.9.6g-engine release:] 8827 Fix crypto/engine/vendor_defns/cswift.h for WIN32 (use '_stdcall'). 8828 [Lynn Gazis <lgazis@rainbow.com>] 8829 8830 Changes between 0.9.6e and 0.9.6f [8 Aug 2002] 8831 8832 *) Fix ASN1 checks. Check for overflow by comparing with LONG_MAX 8833 and get fix the header length calculation. 8834 [Florian Weimer <Weimer@CERT.Uni-Stuttgart.DE>, 8835 Alon Kantor <alonk@checkpoint.com> (and others), 8836 Steve Henson] 8837 8838 *) Use proper error handling instead of 'assertions' in buffer 8839 overflow checks added in 0.9.6e. This prevents DoS (the 8840 assertions could call abort()). 8841 [Arne Ansper <arne@ats.cyber.ee>, Bodo Moeller] 8842 8843 Changes between 0.9.6d and 0.9.6e [30 Jul 2002] 8844 8845 *) Add various sanity checks to asn1_get_length() to reject 8846 the ASN1 length bytes if they exceed sizeof(long), will appear 8847 negative or the content length exceeds the length of the 8848 supplied buffer. 8849 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 8850 8851 *) Fix cipher selection routines: ciphers without encryption had no flags 8852 for the cipher strength set and where therefore not handled correctly 8853 by the selection routines (PR #130). 8854 [Lutz Jaenicke] 8855 8856 *) Fix EVP_dsa_sha macro. 8857 [Nils Larsch] 8858 8859 *) New option 8860 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS 8861 for disabling the SSL 3.0/TLS 1.0 CBC vulnerability countermeasure 8862 that was added in OpenSSL 0.9.6d. 8863 8864 As the countermeasure turned out to be incompatible with some 8865 broken SSL implementations, the new option is part of SSL_OP_ALL. 8866 SSL_OP_ALL is usually employed when compatibility with weird SSL 8867 implementations is desired (e.g. '-bugs' option to 's_client' and 8868 's_server'), so the new option is automatically set in many 8869 applications. 8870 [Bodo Moeller] 8871 8872 *) Changes in security patch: 8873 8874 Changes marked "(CHATS)" were sponsored by the Defense Advanced 8875 Research Projects Agency (DARPA) and Air Force Research Laboratory, 8876 Air Force Materiel Command, USAF, under agreement number 8877 F30602-01-2-0537. 8878 8879 *) Add various sanity checks to asn1_get_length() to reject 8880 the ASN1 length bytes if they exceed sizeof(long), will appear 8881 negative or the content length exceeds the length of the 8882 supplied buffer. (CVE-2002-0659) 8883 [Steve Henson, Adi Stav <stav@mercury.co.il>, James Yonan <jim@ntlp.com>] 8884 8885 *) Assertions for various potential buffer overflows, not known to 8886 happen in practice. 8887 [Ben Laurie (CHATS)] 8888 8889 *) Various temporary buffers to hold ASCII versions of integers were 8890 too small for 64 bit platforms. (CVE-2002-0655) 8891 [Matthew Byng-Maddick <mbm@aldigital.co.uk> and Ben Laurie (CHATS)> 8892 8893 *) Remote buffer overflow in SSL3 protocol - an attacker could 8894 supply an oversized session ID to a client. (CVE-2002-0656) 8895 [Ben Laurie (CHATS)] 8896 8897 *) Remote buffer overflow in SSL2 protocol - an attacker could 8898 supply an oversized client master key. (CVE-2002-0656) 8899 [Ben Laurie (CHATS)] 8900 8901 Changes between 0.9.6c and 0.9.6d [9 May 2002] 8902 8903 *) Fix crypto/asn1/a_sign.c so that 'parameters' is omitted (not 8904 encoded as NULL) with id-dsa-with-sha1. 8905 [Nils Larsch <nla@trustcenter.de>; problem pointed out by Bodo Moeller] 8906 8907 *) Check various X509_...() return values in apps/req.c. 8908 [Nils Larsch <nla@trustcenter.de>] 8909 8910 *) Fix BASE64 decode (EVP_DecodeUpdate) for data with CR/LF ended lines: 8911 an end-of-file condition would erroneously be flagged, when the CRLF 8912 was just at the end of a processed block. The bug was discovered when 8913 processing data through a buffering memory BIO handing the data to a 8914 BASE64-decoding BIO. Bug fund and patch submitted by Pavel Tsekov 8915 <ptsekov@syntrex.com> and Nedelcho Stanev. 8916 [Lutz Jaenicke] 8917 8918 *) Implement a countermeasure against a vulnerability recently found 8919 in CBC ciphersuites in SSL 3.0/TLS 1.0: Send an empty fragment 8920 before application data chunks to avoid the use of known IVs 8921 with data potentially chosen by the attacker. 8922 [Bodo Moeller] 8923 8924 *) Fix length checks in ssl3_get_client_hello(). 8925 [Bodo Moeller] 8926 8927 *) TLS/SSL library bugfix: use s->s3->in_read_app_data differently 8928 to prevent ssl3_read_internal() from incorrectly assuming that 8929 ssl3_read_bytes() found application data while handshake 8930 processing was enabled when in fact s->s3->in_read_app_data was 8931 merely automatically cleared during the initial handshake. 8932 [Bodo Moeller; problem pointed out by Arne Ansper <arne@ats.cyber.ee>] 8933 8934 *) Fix object definitions for Private and Enterprise: they were not 8935 recognized in their shortname (=lowercase) representation. Extend 8936 obj_dat.pl to issue an error when using undefined keywords instead 8937 of silently ignoring the problem (Svenning Sorensen 8938 <sss@sss.dnsalias.net>). 8939 [Lutz Jaenicke] 8940 8941 *) Fix DH_generate_parameters() so that it works for 'non-standard' 8942 generators, i.e. generators other than 2 and 5. (Previously, the 8943 code did not properly initialise the 'add' and 'rem' values to 8944 BN_generate_prime().) 8945 8946 In the new general case, we do not insist that 'generator' is 8947 actually a primitive root: This requirement is rather pointless; 8948 a generator of the order-q subgroup is just as good, if not 8949 better. 8950 [Bodo Moeller] 8951 8952 *) Map new X509 verification errors to alerts. Discovered and submitted by 8953 Tom Wu <tom@arcot.com>. 8954 [Lutz Jaenicke] 8955 8956 *) Fix ssl3_pending() (ssl/s3_lib.c) to prevent SSL_pending() from 8957 returning non-zero before the data has been completely received 8958 when using non-blocking I/O. 8959 [Bodo Moeller; problem pointed out by John Hughes] 8960 8961 *) Some of the ciphers missed the strength entry (SSL_LOW etc). 8962 [Ben Laurie, Lutz Jaenicke] 8963 8964 *) Fix bug in SSL_clear(): bad sessions were not removed (found by 8965 Yoram Zahavi <YoramZ@gilian.com>). 8966 [Lutz Jaenicke] 8967 8968 *) Add information about CygWin 1.3 and on, and preserve proper 8969 configuration for the versions before that. 8970 [Corinna Vinschen <vinschen@redhat.com> and Richard Levitte] 8971 8972 *) Make removal from session cache (SSL_CTX_remove_session()) more robust: 8973 check whether we deal with a copy of a session and do not delete from 8974 the cache in this case. Problem reported by "Izhar Shoshani Levi" 8975 <izhar@checkpoint.com>. 8976 [Lutz Jaenicke] 8977 8978 *) Do not store session data into the internal session cache, if it 8979 is never intended to be looked up (SSL_SESS_CACHE_NO_INTERNAL_LOOKUP 8980 flag is set). Proposed by Aslam <aslam@funk.com>. 8981 [Lutz Jaenicke] 8982 8983 *) Have ASN1_BIT_STRING_set_bit() really clear a bit when the requested 8984 value is 0. 8985 [Richard Levitte] 8986 8987 *) [In 0.9.6d-engine release:] 8988 Fix a crashbug and a logic bug in hwcrhk_load_pubkey(). 8989 [Toomas Kiisk <vix@cyber.ee> via Richard Levitte] 8990 8991 *) Add the configuration target linux-s390x. 8992 [Neale Ferguson <Neale.Ferguson@SoftwareAG-USA.com> via Richard Levitte] 8993 8994 *) The earlier bugfix for the SSL3_ST_SW_HELLO_REQ_C case of 8995 ssl3_accept (ssl/s3_srvr.c) incorrectly used a local flag 8996 variable as an indication that a ClientHello message has been 8997 received. As the flag value will be lost between multiple 8998 invocations of ssl3_accept when using non-blocking I/O, the 8999 function may not be aware that a handshake has actually taken 9000 place, thus preventing a new session from being added to the 9001 session cache. 9002 9003 To avoid this problem, we now set s->new_session to 2 instead of 9004 using a local variable. 9005 [Lutz Jaenicke, Bodo Moeller] 9006 9007 *) Bugfix: Return -1 from ssl3_get_server_done (ssl3/s3_clnt.c) 9008 if the SSL_R_LENGTH_MISMATCH error is detected. 9009 [Geoff Thorpe, Bodo Moeller] 9010 9011 *) New 'shared_ldflag' column in Configure platform table. 9012 [Richard Levitte] 9013 9014 *) Fix EVP_CIPHER_mode macro. 9015 ["Dan S. Camper" <dan@bti.net>] 9016 9017 *) Fix ssl3_read_bytes (ssl/s3_pkt.c): To ignore messages of unknown 9018 type, we must throw them away by setting rr->length to 0. 9019 [D P Chang <dpc@qualys.com>] 9020 9021 Changes between 0.9.6b and 0.9.6c [21 dec 2001] 9022 9023 *) Fix BN_rand_range bug pointed out by Dominikus Scherkl 9024 <Dominikus.Scherkl@biodata.com>. (The previous implementation 9025 worked incorrectly for those cases where range = 10..._2 and 9026 3*range is two bits longer than range.) 9027 [Bodo Moeller] 9028 9029 *) Only add signing time to PKCS7 structures if it is not already 9030 present. 9031 [Steve Henson] 9032 9033 *) Fix crypto/objects/objects.h: "ld-ce" should be "id-ce", 9034 OBJ_ld_ce should be OBJ_id_ce. 9035 Also some ip-pda OIDs in crypto/objects/objects.txt were 9036 incorrect (cf. RFC 3039). 9037 [Matt Cooper, Frederic Giudicelli, Bodo Moeller] 9038 9039 *) Release CRYPTO_LOCK_DYNLOCK when CRYPTO_destroy_dynlockid() 9040 returns early because it has nothing to do. 9041 [Andy Schneider <andy.schneider@bjss.co.uk>] 9042 9043 *) [In 0.9.6c-engine release:] 9044 Fix mutex callback return values in crypto/engine/hw_ncipher.c. 9045 [Andy Schneider <andy.schneider@bjss.co.uk>] 9046 9047 *) [In 0.9.6c-engine release:] 9048 Add support for Cryptographic Appliance's keyserver technology. 9049 (Use engine 'keyclient') 9050 [Cryptographic Appliances and Geoff Thorpe] 9051 9052 *) Add a configuration entry for OS/390 Unix. The C compiler 'c89' 9053 is called via tools/c89.sh because arguments have to be 9054 rearranged (all '-L' options must appear before the first object 9055 modules). 9056 [Richard Shapiro <rshapiro@abinitio.com>] 9057 9058 *) [In 0.9.6c-engine release:] 9059 Add support for Broadcom crypto accelerator cards, backported 9060 from 0.9.7. 9061 [Broadcom, Nalin Dahyabhai <nalin@redhat.com>, Mark Cox] 9062 9063 *) [In 0.9.6c-engine release:] 9064 Add support for SureWare crypto accelerator cards from 9065 Baltimore Technologies. (Use engine 'sureware') 9066 [Baltimore Technologies and Mark Cox] 9067 9068 *) [In 0.9.6c-engine release:] 9069 Add support for crypto accelerator cards from Accelerated 9070 Encryption Processing, www.aep.ie. (Use engine 'aep') 9071 [AEP Inc. and Mark Cox] 9072 9073 *) Add a configuration entry for gcc on UnixWare. 9074 [Gary Benson <gbenson@redhat.com>] 9075 9076 *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake 9077 messages are stored in a single piece (fixed-length part and 9078 variable-length part combined) and fix various bugs found on the way. 9079 [Bodo Moeller] 9080 9081 *) Disable caching in BIO_gethostbyname(), directly use gethostbyname() 9082 instead. BIO_gethostbyname() does not know what timeouts are 9083 appropriate, so entries would stay in cache even when they have 9084 become invalid. 9085 [Bodo Moeller; problem pointed out by Rich Salz <rsalz@zolera.com> 9086 9087 *) Change ssl23_get_client_hello (ssl/s23_srvr.c) behaviour when 9088 faced with a pathologically small ClientHello fragment that does 9089 not contain client_version: Instead of aborting with an error, 9090 simply choose the highest available protocol version (i.e., 9091 TLS 1.0 unless it is disabled). In practice, ClientHello 9092 messages are never sent like this, but this change gives us 9093 strictly correct behaviour at least for TLS. 9094 [Bodo Moeller] 9095 9096 *) Fix SSL handshake functions and SSL_clear() such that SSL_clear() 9097 never resets s->method to s->ctx->method when called from within 9098 one of the SSL handshake functions. 9099 [Bodo Moeller; problem pointed out by Niko Baric] 9100 9101 *) In ssl3_get_client_hello (ssl/s3_srvr.c), generate a fatal alert 9102 (sent using the client's version number) if client_version is 9103 smaller than the protocol version in use. Also change 9104 ssl23_get_client_hello (ssl/s23_srvr.c) to select TLS 1.0 if 9105 the client demanded SSL 3.0 but only TLS 1.0 is enabled; then 9106 the client will at least see that alert. 9107 [Bodo Moeller] 9108 9109 *) Fix ssl3_get_message (ssl/s3_both.c) to handle message fragmentation 9110 correctly. 9111 [Bodo Moeller] 9112 9113 *) Avoid infinite loop in ssl3_get_message (ssl/s3_both.c) if a 9114 client receives HelloRequest while in a handshake. 9115 [Bodo Moeller; bug noticed by Andy Schneider <andy.schneider@bjss.co.uk>] 9116 9117 *) Bugfix in ssl3_accept (ssl/s3_srvr.c): Case SSL3_ST_SW_HELLO_REQ_C 9118 should end in 'break', not 'goto end' which circumvents various 9119 cleanups done in state SSL_ST_OK. But session related stuff 9120 must be disabled for SSL_ST_OK in the case that we just sent a 9121 HelloRequest. 9122 9123 Also avoid some overhead by not calling ssl_init_wbio_buffer() 9124 before just sending a HelloRequest. 9125 [Bodo Moeller, Eric Rescorla <ekr@rtfm.com>] 9126 9127 *) Fix ssl/s3_enc.c, ssl/t1_enc.c and ssl/s3_pkt.c so that we don't 9128 reveal whether illegal block cipher padding was found or a MAC 9129 verification error occurred. (Neither SSLerr() codes nor alerts 9130 are directly visible to potential attackers, but the information 9131 may leak via logfiles.) 9132 9133 Similar changes are not required for the SSL 2.0 implementation 9134 because the number of padding bytes is sent in clear for SSL 2.0, 9135 and the extra bytes are just ignored. However ssl/s2_pkt.c 9136 failed to verify that the purported number of padding bytes is in 9137 the legal range. 9138 [Bodo Moeller] 9139 9140 *) Add OpenUNIX-8 support including shared libraries 9141 (Boyd Lynn Gerber <gerberb@zenez.com>). 9142 [Lutz Jaenicke] 9143 9144 *) Improve RSA_padding_check_PKCS1_OAEP() check again to avoid 9145 'wristwatch attack' using huge encoding parameters (cf. 9146 James H. Manger's CRYPTO 2001 paper). Note that the 9147 RSA_PKCS1_OAEP_PADDING case of RSA_private_decrypt() does not use 9148 encoding parameters and hence was not vulnerable. 9149 [Bodo Moeller] 9150 9151 *) BN_sqr() bug fix. 9152 [Ulf Möller, reported by Jim Ellis <jim.ellis@cavium.com>] 9153 9154 *) Rabin-Miller test analyses assume uniformly distributed witnesses, 9155 so use BN_pseudo_rand_range() instead of using BN_pseudo_rand() 9156 followed by modular reduction. 9157 [Bodo Moeller; pointed out by Adam Young <AYoung1@NCSUS.JNJ.COM>] 9158 9159 *) Add BN_pseudo_rand_range() with obvious functionality: BN_rand_range() 9160 equivalent based on BN_pseudo_rand() instead of BN_rand(). 9161 [Bodo Moeller] 9162 9163 *) s3_srvr.c: allow sending of large client certificate lists (> 16 kB). 9164 This function was broken, as the check for a new client hello message 9165 to handle SGC did not allow these large messages. 9166 (Tracked down by "Douglas E. Engert" <deengert@anl.gov>.) 9167 [Lutz Jaenicke] 9168 9169 *) Add alert descriptions for TLSv1 to SSL_alert_desc_string[_long](). 9170 [Lutz Jaenicke] 9171 9172 *) Fix buggy behaviour of BIO_get_num_renegotiates() and BIO_ctrl() 9173 for BIO_C_GET_WRITE_BUF_SIZE ("Stephen Hinton" <shinton@netopia.com>). 9174 [Lutz Jaenicke] 9175 9176 *) Rework the configuration and shared library support for Tru64 Unix. 9177 The configuration part makes use of modern compiler features and 9178 still retains old compiler behavior for those that run older versions 9179 of the OS. The shared library support part includes a variant that 9180 uses the RPATH feature, and is available through the special 9181 configuration target "alpha-cc-rpath", which will never be selected 9182 automatically. 9183 [Tim Mooney <mooney@dogbert.cc.ndsu.NoDak.edu> via Richard Levitte] 9184 9185 *) In ssl3_get_key_exchange (ssl/s3_clnt.c), call ssl3_get_message() 9186 with the same message size as in ssl3_get_certificate_request(). 9187 Otherwise, if no ServerKeyExchange message occurs, CertificateRequest 9188 messages might inadvertently be reject as too long. 9189 [Petr Lampa <lampa@fee.vutbr.cz>] 9190 9191 *) Enhanced support for IA-64 Unix platforms (well, Linux and HP-UX). 9192 [Andy Polyakov] 9193 9194 *) Modified SSL library such that the verify_callback that has been set 9195 specificly for an SSL object with SSL_set_verify() is actually being 9196 used. Before the change, a verify_callback set with this function was 9197 ignored and the verify_callback() set in the SSL_CTX at the time of 9198 the call was used. New function X509_STORE_CTX_set_verify_cb() introduced 9199 to allow the necessary settings. 9200 [Lutz Jaenicke] 9201 9202 *) Initialize static variable in crypto/dsa/dsa_lib.c and crypto/dh/dh_lib.c 9203 explicitly to NULL, as at least on Solaris 8 this seems not always to be 9204 done automatically (in contradiction to the requirements of the C 9205 standard). This made problems when used from OpenSSH. 9206 [Lutz Jaenicke] 9207 9208 *) In OpenSSL 0.9.6a and 0.9.6b, crypto/dh/dh_key.c ignored 9209 dh->length and always used 9210 9211 BN_rand_range(priv_key, dh->p). 9212 9213 BN_rand_range() is not necessary for Diffie-Hellman, and this 9214 specific range makes Diffie-Hellman unnecessarily inefficient if 9215 dh->length (recommended exponent length) is much smaller than the 9216 length of dh->p. We could use BN_rand_range() if the order of 9217 the subgroup was stored in the DH structure, but we only have 9218 dh->length. 9219 9220 So switch back to 9221 9222 BN_rand(priv_key, l, ...) 9223 9224 where 'l' is dh->length if this is defined, or BN_num_bits(dh->p)-1 9225 otherwise. 9226 [Bodo Moeller] 9227 9228 *) In 9229 9230 RSA_eay_public_encrypt 9231 RSA_eay_private_decrypt 9232 RSA_eay_private_encrypt (signing) 9233 RSA_eay_public_decrypt (signature verification) 9234 9235 (default implementations for RSA_public_encrypt, 9236 RSA_private_decrypt, RSA_private_encrypt, RSA_public_decrypt), 9237 always reject numbers >= n. 9238 [Bodo Moeller] 9239 9240 *) In crypto/rand/md_rand.c, use a new short-time lock CRYPTO_LOCK_RAND2 9241 to synchronize access to 'locking_thread'. This is necessary on 9242 systems where access to 'locking_thread' (an 'unsigned long' 9243 variable) is not atomic. 9244 [Bodo Moeller] 9245 9246 *) In crypto/rand/md_rand.c, set 'locking_thread' to current thread's ID 9247 *before* setting the 'crypto_lock_rand' flag. The previous code had 9248 a race condition if 0 is a valid thread ID. 9249 [Travis Vitek <vitek@roguewave.com>] 9250 9251 *) Add support for shared libraries under Irix. 9252 [Albert Chin-A-Young <china@thewrittenword.com>] 9253 9254 *) Add configuration option to build on Linux on both big-endian and 9255 little-endian MIPS. 9256 [Ralf Baechle <ralf@uni-koblenz.de>] 9257 9258 *) Add the possibility to create shared libraries on HP-UX. 9259 [Richard Levitte] 9260 9261 Changes between 0.9.6a and 0.9.6b [9 Jul 2001] 9262 9263 *) Change ssleay_rand_bytes (crypto/rand/md_rand.c) 9264 to avoid a SSLeay/OpenSSL PRNG weakness pointed out by 9265 Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokia.com>: 9266 PRNG state recovery was possible based on the output of 9267 one PRNG request appropriately sized to gain knowledge on 9268 'md' followed by enough consecutive 1-byte PRNG requests 9269 to traverse all of 'state'. 9270 9271 1. When updating 'md_local' (the current thread's copy of 'md') 9272 during PRNG output generation, hash all of the previous 9273 'md_local' value, not just the half used for PRNG output. 9274 9275 2. Make the number of bytes from 'state' included into the hash 9276 independent from the number of PRNG bytes requested. 9277 9278 The first measure alone would be sufficient to avoid 9279 Markku-Juhani's attack. (Actually it had never occurred 9280 to me that the half of 'md_local' used for chaining was the 9281 half from which PRNG output bytes were taken -- I had always 9282 assumed that the secret half would be used.) The second 9283 measure makes sure that additional data from 'state' is never 9284 mixed into 'md_local' in small portions; this heuristically 9285 further strengthens the PRNG. 9286 [Bodo Moeller] 9287 9288 *) Fix crypto/bn/asm/mips3.s. 9289 [Andy Polyakov] 9290 9291 *) When only the key is given to "enc", the IV is undefined. Print out 9292 an error message in this case. 9293 [Lutz Jaenicke] 9294 9295 *) Handle special case when X509_NAME is empty in X509 printing routines. 9296 [Steve Henson] 9297 9298 *) In dsa_do_verify (crypto/dsa/dsa_ossl.c), verify that r and s are 9299 positive and less than q. 9300 [Bodo Moeller] 9301 9302 *) Don't change *pointer in CRYPTO_add_lock() is add_lock_callback is 9303 used: it isn't thread safe and the add_lock_callback should handle 9304 that itself. 9305 [Paul Rose <Paul.Rose@bridge.com>] 9306 9307 *) Verify that incoming data obeys the block size in 9308 ssl3_enc (ssl/s3_enc.c) and tls1_enc (ssl/t1_enc.c). 9309 [Bodo Moeller] 9310 9311 *) Fix OAEP check. 9312 [Ulf Möller, Bodo Möller] 9313 9314 *) The countermeasure against Bleichbacher's attack on PKCS #1 v1.5 9315 RSA encryption was accidentally removed in s3_srvr.c in OpenSSL 0.9.5 9316 when fixing the server behaviour for backwards-compatible 'client 9317 hello' messages. (Note that the attack is impractical against 9318 SSL 3.0 and TLS 1.0 anyway because length and version checking 9319 means that the probability of guessing a valid ciphertext is 9320 around 2^-40; see section 5 in Bleichenbacher's CRYPTO '98 9321 paper.) 9322 9323 Before 0.9.5, the countermeasure (hide the error by generating a 9324 random 'decryption result') did not work properly because 9325 ERR_clear_error() was missing, meaning that SSL_get_error() would 9326 detect the supposedly ignored error. 9327 9328 Both problems are now fixed. 9329 [Bodo Moeller] 9330 9331 *) In crypto/bio/bf_buff.c, increase DEFAULT_BUFFER_SIZE to 4096 9332 (previously it was 1024). 9333 [Bodo Moeller] 9334 9335 *) Fix for compatibility mode trust settings: ignore trust settings 9336 unless some valid trust or reject settings are present. 9337 [Steve Henson] 9338 9339 *) Fix for blowfish EVP: its a variable length cipher. 9340 [Steve Henson] 9341 9342 *) Fix various bugs related to DSA S/MIME verification. Handle missing 9343 parameters in DSA public key structures and return an error in the 9344 DSA routines if parameters are absent. 9345 [Steve Henson] 9346 9347 *) In versions up to 0.9.6, RAND_file_name() resorted to file ".rnd" 9348 in the current directory if neither $RANDFILE nor $HOME was set. 9349 RAND_file_name() in 0.9.6a returned NULL in this case. This has 9350 caused some confusion to Windows users who haven't defined $HOME. 9351 Thus RAND_file_name() is changed again: e_os.h can define a 9352 DEFAULT_HOME, which will be used if $HOME is not set. 9353 For Windows, we use "C:"; on other platforms, we still require 9354 environment variables. 9355 9356 *) Move 'if (!initialized) RAND_poll()' into regions protected by 9357 CRYPTO_LOCK_RAND. This is not strictly necessary, but avoids 9358 having multiple threads call RAND_poll() concurrently. 9359 [Bodo Moeller] 9360 9361 *) In crypto/rand/md_rand.c, replace 'add_do_not_lock' flag by a 9362 combination of a flag and a thread ID variable. 9363 Otherwise while one thread is in ssleay_rand_bytes (which sets the 9364 flag), *other* threads can enter ssleay_add_bytes without obeying 9365 the CRYPTO_LOCK_RAND lock (and may even illegally release the lock 9366 that they do not hold after the first thread unsets add_do_not_lock). 9367 [Bodo Moeller] 9368 9369 *) Change bctest again: '-x' expressions are not available in all 9370 versions of 'test'. 9371 [Bodo Moeller] 9372 9373 Changes between 0.9.6 and 0.9.6a [5 Apr 2001] 9374 9375 *) Fix a couple of memory leaks in PKCS7_dataDecode() 9376 [Steve Henson, reported by Heyun Zheng <hzheng@atdsprint.com>] 9377 9378 *) Change Configure and Makefiles to provide EXE_EXT, which will contain 9379 the default extension for executables, if any. Also, make the perl 9380 scripts that use symlink() to test if it really exists and use "cp" 9381 if it doesn't. All this made OpenSSL compilable and installable in 9382 CygWin. 9383 [Richard Levitte] 9384 9385 *) Fix for asn1_GetSequence() for indefinite length constructed data. 9386 If SEQUENCE is length is indefinite just set c->slen to the total 9387 amount of data available. 9388 [Steve Henson, reported by shige@FreeBSD.org] 9389 [This change does not apply to 0.9.7.] 9390 9391 *) Change bctest to avoid here-documents inside command substitution 9392 (workaround for FreeBSD /bin/sh bug). 9393 For compatibility with Ultrix, avoid shell functions (introduced 9394 in the bctest version that searches along $PATH). 9395 [Bodo Moeller] 9396 9397 *) Rename 'des_encrypt' to 'des_encrypt1'. This avoids the clashes 9398 with des_encrypt() defined on some operating systems, like Solaris 9399 and UnixWare. 9400 [Richard Levitte] 9401 9402 *) Check the result of RSA-CRT (see D. Boneh, R. DeMillo, R. Lipton: 9403 On the Importance of Eliminating Errors in Cryptographic 9404 Computations, J. Cryptology 14 (2001) 2, 101-119, 9405 http://theory.stanford.edu/~dabo/papers/faults.ps.gz). 9406 [Ulf Moeller] 9407 9408 *) MIPS assembler BIGNUM division bug fix. 9409 [Andy Polyakov] 9410 9411 *) Disabled incorrect Alpha assembler code. 9412 [Richard Levitte] 9413 9414 *) Fix PKCS#7 decode routines so they correctly update the length 9415 after reading an EOC for the EXPLICIT tag. 9416 [Steve Henson] 9417 [This change does not apply to 0.9.7.] 9418 9419 *) Fix bug in PKCS#12 key generation routines. This was triggered 9420 if a 3DES key was generated with a 0 initial byte. Include 9421 PKCS12_BROKEN_KEYGEN compilation option to retain the old 9422 (but broken) behaviour. 9423 [Steve Henson] 9424 9425 *) Enhance bctest to search for a working bc along $PATH and print 9426 it when found. 9427 [Tim Rice <tim@multitalents.net> via Richard Levitte] 9428 9429 *) Fix memory leaks in err.c: free err_data string if necessary; 9430 don't write to the wrong index in ERR_set_error_data. 9431 [Bodo Moeller] 9432 9433 *) Implement ssl23_peek (analogous to ssl23_read), which previously 9434 did not exist. 9435 [Bodo Moeller] 9436 9437 *) Replace rdtsc with _emit statements for VC++ version 5. 9438 [Jeremy Cooper <jeremy@baymoo.org>] 9439 9440 *) Make it possible to reuse SSLv2 sessions. 9441 [Richard Levitte] 9442 9443 *) In copy_email() check for >= 0 as a return value for 9444 X509_NAME_get_index_by_NID() since 0 is a valid index. 9445 [Steve Henson reported by Massimiliano Pala <madwolf@opensca.org>] 9446 9447 *) Avoid coredump with unsupported or invalid public keys by checking if 9448 X509_get_pubkey() fails in PKCS7_verify(). Fix memory leak when 9449 PKCS7_verify() fails with non detached data. 9450 [Steve Henson] 9451 9452 *) Don't use getenv in library functions when run as setuid/setgid. 9453 New function OPENSSL_issetugid(). 9454 [Ulf Moeller] 9455 9456 *) Avoid false positives in memory leak detection code (crypto/mem_dbg.c) 9457 due to incorrect handling of multi-threading: 9458 9459 1. Fix timing glitch in the MemCheck_off() portion of CRYPTO_mem_ctrl(). 9460 9461 2. Fix logical glitch in is_MemCheck_on() aka CRYPTO_is_mem_check_on(). 9462 9463 3. Count how many times MemCheck_off() has been called so that 9464 nested use can be treated correctly. This also avoids 9465 inband-signalling in the previous code (which relied on the 9466 assumption that thread ID 0 is impossible). 9467 [Bodo Moeller] 9468 9469 *) Add "-rand" option also to s_client and s_server. 9470 [Lutz Jaenicke] 9471 9472 *) Fix CPU detection on Irix 6.x. 9473 [Kurt Hockenbury <khockenb@stevens-tech.edu> and 9474 "Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 9475 9476 *) Fix X509_NAME bug which produced incorrect encoding if X509_NAME 9477 was empty. 9478 [Steve Henson] 9479 [This change does not apply to 0.9.7.] 9480 9481 *) Use the cached encoding of an X509_NAME structure rather than 9482 copying it. This is apparently the reason for the libsafe "errors" 9483 but the code is actually correct. 9484 [Steve Henson] 9485 9486 *) Add new function BN_rand_range(), and fix DSA_sign_setup() to prevent 9487 Bleichenbacher's DSA attack. 9488 Extend BN_[pseudo_]rand: As before, top=1 forces the highest two bits 9489 to be set and top=0 forces the highest bit to be set; top=-1 is new 9490 and leaves the highest bit random. 9491 [Ulf Moeller, Bodo Moeller] 9492 9493 *) In the NCONF_...-based implementations for CONF_... queries 9494 (crypto/conf/conf_lib.c), if the input LHASH is NULL, avoid using 9495 a temporary CONF structure with the data component set to NULL 9496 (which gives segmentation faults in lh_retrieve). 9497 Instead, use NULL for the CONF pointer in CONF_get_string and 9498 CONF_get_number (which may use environment variables) and directly 9499 return NULL from CONF_get_section. 9500 [Bodo Moeller] 9501 9502 *) Fix potential buffer overrun for EBCDIC. 9503 [Ulf Moeller] 9504 9505 *) Tolerate nonRepudiation as being valid for S/MIME signing and certSign 9506 keyUsage if basicConstraints absent for a CA. 9507 [Steve Henson] 9508 9509 *) Make SMIME_write_PKCS7() write mail header values with a format that 9510 is more generally accepted (no spaces before the semicolon), since 9511 some programs can't parse those values properly otherwise. Also make 9512 sure BIO's that break lines after each write do not create invalid 9513 headers. 9514 [Richard Levitte] 9515 9516 *) Make the CRL encoding routines work with empty SEQUENCE OF. The 9517 macros previously used would not encode an empty SEQUENCE OF 9518 and break the signature. 9519 [Steve Henson] 9520 [This change does not apply to 0.9.7.] 9521 9522 *) Zero the premaster secret after deriving the master secret in 9523 DH ciphersuites. 9524 [Steve Henson] 9525 9526 *) Add some EVP_add_digest_alias registrations (as found in 9527 OpenSSL_add_all_digests()) to SSL_library_init() 9528 aka OpenSSL_add_ssl_algorithms(). This provides improved 9529 compatibility with peers using X.509 certificates 9530 with unconventional AlgorithmIdentifier OIDs. 9531 [Bodo Moeller] 9532 9533 *) Fix for Irix with NO_ASM. 9534 ["Bruce W. Forsberg" <bruce.forsberg@baesystems.com>] 9535 9536 *) ./config script fixes. 9537 [Ulf Moeller, Richard Levitte] 9538 9539 *) Fix 'openssl passwd -1'. 9540 [Bodo Moeller] 9541 9542 *) Change PKCS12_key_gen_asc() so it can cope with non null 9543 terminated strings whose length is passed in the passlen 9544 parameter, for example from PEM callbacks. This was done 9545 by adding an extra length parameter to asc2uni(). 9546 [Steve Henson, reported by <oddissey@samsung.co.kr>] 9547 9548 *) Fix C code generated by 'openssl dsaparam -C': If a BN_bin2bn 9549 call failed, free the DSA structure. 9550 [Bodo Moeller] 9551 9552 *) Fix to uni2asc() to cope with zero length Unicode strings. 9553 These are present in some PKCS#12 files. 9554 [Steve Henson] 9555 9556 *) Increase s2->wbuf allocation by one byte in ssl2_new (ssl/s2_lib.c). 9557 Otherwise do_ssl_write (ssl/s2_pkt.c) will write beyond buffer limits 9558 when writing a 32767 byte record. 9559 [Bodo Moeller; problem reported by Eric Day <eday@concentric.net>] 9560 9561 *) In RSA_eay_public_{en,ed}crypt and RSA_eay_mod_exp (rsa_eay.c), 9562 obtain lock CRYPTO_LOCK_RSA before setting rsa->_method_mod_{n,p,q}. 9563 9564 (RSA objects have a reference count access to which is protected 9565 by CRYPTO_LOCK_RSA [see rsa_lib.c, s3_srvr.c, ssl_cert.c, ssl_rsa.c], 9566 so they are meant to be shared between threads.) 9567 [Bodo Moeller, Geoff Thorpe; original patch submitted by 9568 "Reddie, Steven" <Steven.Reddie@ca.com>] 9569 9570 *) Fix a deadlock in CRYPTO_mem_leaks(). 9571 [Bodo Moeller] 9572 9573 *) Use better test patterns in bntest. 9574 [Ulf Möller] 9575 9576 *) rand_win.c fix for Borland C. 9577 [Ulf Möller] 9578 9579 *) BN_rshift bugfix for n == 0. 9580 [Bodo Moeller] 9581 9582 *) Add a 'bctest' script that checks for some known 'bc' bugs 9583 so that 'make test' does not abort just because 'bc' is broken. 9584 [Bodo Moeller] 9585 9586 *) Store verify_result within SSL_SESSION also for client side to 9587 avoid potential security hole. (Re-used sessions on the client side 9588 always resulted in verify_result==X509_V_OK, not using the original 9589 result of the server certificate verification.) 9590 [Lutz Jaenicke] 9591 9592 *) Fix ssl3_pending: If the record in s->s3->rrec is not of type 9593 SSL3_RT_APPLICATION_DATA, return 0. 9594 Similarly, change ssl2_pending to return 0 if SSL_in_init(s) is true. 9595 [Bodo Moeller] 9596 9597 *) Fix SSL_peek: 9598 Both ssl2_peek and ssl3_peek, which were totally broken in earlier 9599 releases, have been re-implemented by renaming the previous 9600 implementations of ssl2_read and ssl3_read to ssl2_read_internal 9601 and ssl3_read_internal, respectively, and adding 'peek' parameters 9602 to them. The new ssl[23]_{read,peek} functions are calls to 9603 ssl[23]_read_internal with the 'peek' flag set appropriately. 9604 A 'peek' parameter has also been added to ssl3_read_bytes, which 9605 does the actual work for ssl3_read_internal. 9606 [Bodo Moeller] 9607 9608 *) Initialise "ex_data" member of RSA/DSA/DH structures prior to calling 9609 the method-specific "init()" handler. Also clean up ex_data after 9610 calling the method-specific "finish()" handler. Previously, this was 9611 happening the other way round. 9612 [Geoff Thorpe] 9613 9614 *) Increase BN_CTX_NUM (the number of BIGNUMs in a BN_CTX) to 16. 9615 The previous value, 12, was not always sufficient for BN_mod_exp(). 9616 [Bodo Moeller] 9617 9618 *) Make sure that shared libraries get the internal name engine with 9619 the full version number and not just 0. This should mark the 9620 shared libraries as not backward compatible. Of course, this should 9621 be changed again when we can guarantee backward binary compatibility. 9622 [Richard Levitte] 9623 9624 *) Fix typo in get_cert_by_subject() in by_dir.c 9625 [Jean-Marc Desperrier <jean-marc.desperrier@certplus.com>] 9626 9627 *) Rework the system to generate shared libraries: 9628 9629 - Make note of the expected extension for the shared libraries and 9630 if there is a need for symbolic links from for example libcrypto.so.0 9631 to libcrypto.so.0.9.7. There is extended info in Configure for 9632 that. 9633 9634 - Make as few rebuilds of the shared libraries as possible. 9635 9636 - Still avoid linking the OpenSSL programs with the shared libraries. 9637 9638 - When installing, install the shared libraries separately from the 9639 static ones. 9640 [Richard Levitte] 9641 9642 *) Fix SSL_CTX_set_read_ahead macro to actually use its argument. 9643 9644 Copy SSL_CTX's read_ahead flag to SSL object directly in SSL_new 9645 and not in SSL_clear because the latter is also used by the 9646 accept/connect functions; previously, the settings made by 9647 SSL_set_read_ahead would be lost during the handshake. 9648 [Bodo Moeller; problems reported by Anders Gertz <gertz@epact.se>] 9649 9650 *) Correct util/mkdef.pl to be selective about disabled algorithms. 9651 Previously, it would create entries for disabled algorithms no 9652 matter what. 9653 [Richard Levitte] 9654 9655 *) Added several new manual pages for SSL_* function. 9656 [Lutz Jaenicke] 9657 9658 Changes between 0.9.5a and 0.9.6 [24 Sep 2000] 9659 9660 *) In ssl23_get_client_hello, generate an error message when faced 9661 with an initial SSL 3.0/TLS record that is too small to contain the 9662 first two bytes of the ClientHello message, i.e. client_version. 9663 (Note that this is a pathologic case that probably has never happened 9664 in real life.) The previous approach was to use the version number 9665 from the record header as a substitute; but our protocol choice 9666 should not depend on that one because it is not authenticated 9667 by the Finished messages. 9668 [Bodo Moeller] 9669 9670 *) More robust randomness gathering functions for Windows. 9671 [Jeffrey Altman <jaltman@columbia.edu>] 9672 9673 *) For compatibility reasons if the flag X509_V_FLAG_ISSUER_CHECK is 9674 not set then we don't setup the error code for issuer check errors 9675 to avoid possibly overwriting other errors which the callback does 9676 handle. If an application does set the flag then we assume it knows 9677 what it is doing and can handle the new informational codes 9678 appropriately. 9679 [Steve Henson] 9680 9681 *) Fix for a nasty bug in ASN1_TYPE handling. ASN1_TYPE is used for 9682 a general "ANY" type, as such it should be able to decode anything 9683 including tagged types. However it didn't check the class so it would 9684 wrongly interpret tagged types in the same way as their universal 9685 counterpart and unknown types were just rejected. Changed so that the 9686 tagged and unknown types are handled in the same way as a SEQUENCE: 9687 that is the encoding is stored intact. There is also a new type 9688 "V_ASN1_OTHER" which is used when the class is not universal, in this 9689 case we have no idea what the actual type is so we just lump them all 9690 together. 9691 [Steve Henson] 9692 9693 *) On VMS, stdout may very well lead to a file that is written to 9694 in a record-oriented fashion. That means that every write() will 9695 write a separate record, which will be read separately by the 9696 programs trying to read from it. This can be very confusing. 9697 9698 The solution is to put a BIO filter in the way that will buffer 9699 text until a linefeed is reached, and then write everything a 9700 line at a time, so every record written will be an actual line, 9701 not chunks of lines and not (usually doesn't happen, but I've 9702 seen it once) several lines in one record. BIO_f_linebuffer() is 9703 the answer. 9704 9705 Currently, it's a VMS-only method, because that's where it has 9706 been tested well enough. 9707 [Richard Levitte] 9708 9709 *) Remove 'optimized' squaring variant in BN_mod_mul_montgomery, 9710 it can return incorrect results. 9711 (Note: The buggy variant was not enabled in OpenSSL 0.9.5a, 9712 but it was in 0.9.6-beta[12].) 9713 [Bodo Moeller] 9714 9715 *) Disable the check for content being present when verifying detached 9716 signatures in pk7_smime.c. Some versions of Netscape (wrongly) 9717 include zero length content when signing messages. 9718 [Steve Henson] 9719 9720 *) New BIO_shutdown_wr macro, which invokes the BIO_C_SHUTDOWN_WR 9721 BIO_ctrl (for BIO pairs). 9722 [Bodo Möller] 9723 9724 *) Add DSO method for VMS. 9725 [Richard Levitte] 9726 9727 *) Bug fix: Montgomery multiplication could produce results with the 9728 wrong sign. 9729 [Ulf Möller] 9730 9731 *) Add RPM specification openssl.spec and modify it to build three 9732 packages. The default package contains applications, application 9733 documentation and run-time libraries. The devel package contains 9734 include files, static libraries and function documentation. The 9735 doc package contains the contents of the doc directory. The original 9736 openssl.spec was provided by Damien Miller <djm@mindrot.org>. 9737 [Richard Levitte] 9738 9739 *) Add a large number of documentation files for many SSL routines. 9740 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 9741 9742 *) Add a configuration entry for Sony News 4. 9743 [NAKAJI Hiroyuki <nakaji@tutrp.tut.ac.jp>] 9744 9745 *) Don't set the two most significant bits to one when generating a 9746 random number < q in the DSA library. 9747 [Ulf Möller] 9748 9749 *) New SSL API mode 'SSL_MODE_AUTO_RETRY'. This disables the default 9750 behaviour that SSL_read may result in SSL_ERROR_WANT_READ (even if 9751 the underlying transport is blocking) if a handshake took place. 9752 (The default behaviour is needed by applications such as s_client 9753 and s_server that use select() to determine when to use SSL_read; 9754 but for applications that know in advance when to expect data, it 9755 just makes things more complicated.) 9756 [Bodo Moeller] 9757 9758 *) Add RAND_egd_bytes(), which gives control over the number of bytes read 9759 from EGD. 9760 [Ben Laurie] 9761 9762 *) Add a few more EBCDIC conditionals that make `req' and `x509' 9763 work better on such systems. 9764 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 9765 9766 *) Add two demo programs for PKCS12_parse() and PKCS12_create(). 9767 Update PKCS12_parse() so it copies the friendlyName and the 9768 keyid to the certificates aux info. 9769 [Steve Henson] 9770 9771 *) Fix bug in PKCS7_verify() which caused an infinite loop 9772 if there was more than one signature. 9773 [Sven Uszpelkat <su@celocom.de>] 9774 9775 *) Major change in util/mkdef.pl to include extra information 9776 about each symbol, as well as presenting variables as well 9777 as functions. This change means that there's n more need 9778 to rebuild the .num files when some algorithms are excluded. 9779 [Richard Levitte] 9780 9781 *) Allow the verify time to be set by an application, 9782 rather than always using the current time. 9783 [Steve Henson] 9784 9785 *) Phase 2 verify code reorganisation. The certificate 9786 verify code now looks up an issuer certificate by a 9787 number of criteria: subject name, authority key id 9788 and key usage. It also verifies self signed certificates 9789 by the same criteria. The main comparison function is 9790 X509_check_issued() which performs these checks. 9791 9792 Lot of changes were necessary in order to support this 9793 without completely rewriting the lookup code. 9794 9795 Authority and subject key identifier are now cached. 9796 9797 The LHASH 'certs' is X509_STORE has now been replaced 9798 by a STACK_OF(X509_OBJECT). This is mainly because an 9799 LHASH can't store or retrieve multiple objects with 9800 the same hash value. 9801 9802 As a result various functions (which were all internal 9803 use only) have changed to handle the new X509_STORE 9804 structure. This will break anything that messed round 9805 with X509_STORE internally. 9806 9807 The functions X509_STORE_add_cert() now checks for an 9808 exact match, rather than just subject name. 9809 9810 The X509_STORE API doesn't directly support the retrieval 9811 of multiple certificates matching a given criteria, however 9812 this can be worked round by performing a lookup first 9813 (which will fill the cache with candidate certificates) 9814 and then examining the cache for matches. This is probably 9815 the best we can do without throwing out X509_LOOKUP 9816 entirely (maybe later...). 9817 9818 The X509_VERIFY_CTX structure has been enhanced considerably. 9819 9820 All certificate lookup operations now go via a get_issuer() 9821 callback. Although this currently uses an X509_STORE it 9822 can be replaced by custom lookups. This is a simple way 9823 to bypass the X509_STORE hackery necessary to make this 9824 work and makes it possible to use more efficient techniques 9825 in future. A very simple version which uses a simple 9826 STACK for its trusted certificate store is also provided 9827 using X509_STORE_CTX_trusted_stack(). 9828 9829 The verify_cb() and verify() callbacks now have equivalents 9830 in the X509_STORE_CTX structure. 9831 9832 X509_STORE_CTX also has a 'flags' field which can be used 9833 to customise the verify behaviour. 9834 [Steve Henson] 9835 9836 *) Add new PKCS#7 signing option PKCS7_NOSMIMECAP which 9837 excludes S/MIME capabilities. 9838 [Steve Henson] 9839 9840 *) When a certificate request is read in keep a copy of the 9841 original encoding of the signed data and use it when outputting 9842 again. Signatures then use the original encoding rather than 9843 a decoded, encoded version which may cause problems if the 9844 request is improperly encoded. 9845 [Steve Henson] 9846 9847 *) For consistency with other BIO_puts implementations, call 9848 buffer_write(b, ...) directly in buffer_puts instead of calling 9849 BIO_write(b, ...). 9850 9851 In BIO_puts, increment b->num_write as in BIO_write. 9852 [Peter.Sylvester@EdelWeb.fr] 9853 9854 *) Fix BN_mul_word for the case where the word is 0. (We have to use 9855 BN_zero, we may not return a BIGNUM with an array consisting of 9856 words set to zero.) 9857 [Bodo Moeller] 9858 9859 *) Avoid calling abort() from within the library when problems are 9860 detected, except if preprocessor symbols have been defined 9861 (such as REF_CHECK, BN_DEBUG etc.). 9862 [Bodo Moeller] 9863 9864 *) New openssl application 'rsautl'. This utility can be 9865 used for low level RSA operations. DER public key 9866 BIO/fp routines also added. 9867 [Steve Henson] 9868 9869 *) New Configure entry and patches for compiling on QNX 4. 9870 [Andreas Schneider <andreas@ds3.etech.fh-hamburg.de>] 9871 9872 *) A demo state-machine implementation was sponsored by 9873 Nuron (http://www.nuron.com/) and is now available in 9874 demos/state_machine. 9875 [Ben Laurie] 9876 9877 *) New options added to the 'dgst' utility for signature 9878 generation and verification. 9879 [Steve Henson] 9880 9881 *) Unrecognized PKCS#7 content types are now handled via a 9882 catch all ASN1_TYPE structure. This allows unsupported 9883 types to be stored as a "blob" and an application can 9884 encode and decode it manually. 9885 [Steve Henson] 9886 9887 *) Fix various signed/unsigned issues to make a_strex.c 9888 compile under VC++. 9889 [Oscar Jacobsson <oscar.jacobsson@celocom.com>] 9890 9891 *) ASN1 fixes. i2d_ASN1_OBJECT was not returning the correct 9892 length if passed a buffer. ASN1_INTEGER_to_BN failed 9893 if passed a NULL BN and its argument was negative. 9894 [Steve Henson, pointed out by Sven Heiberg <sven@tartu.cyber.ee>] 9895 9896 *) Modification to PKCS#7 encoding routines to output definite 9897 length encoding. Since currently the whole structures are in 9898 memory there's not real point in using indefinite length 9899 constructed encoding. However if OpenSSL is compiled with 9900 the flag PKCS7_INDEFINITE_ENCODING the old form is used. 9901 [Steve Henson] 9902 9903 *) Added BIO_vprintf() and BIO_vsnprintf(). 9904 [Richard Levitte] 9905 9906 *) Added more prefixes to parse for in the strings written 9907 through a logging bio, to cover all the levels that are available 9908 through syslog. The prefixes are now: 9909 9910 PANIC, EMERG, EMR => LOG_EMERG 9911 ALERT, ALR => LOG_ALERT 9912 CRIT, CRI => LOG_CRIT 9913 ERROR, ERR => LOG_ERR 9914 WARNING, WARN, WAR => LOG_WARNING 9915 NOTICE, NOTE, NOT => LOG_NOTICE 9916 INFO, INF => LOG_INFO 9917 DEBUG, DBG => LOG_DEBUG 9918 9919 and as before, if none of those prefixes are present at the 9920 beginning of the string, LOG_ERR is chosen. 9921 9922 On Win32, the LOG_* levels are mapped according to this: 9923 9924 LOG_EMERG, LOG_ALERT, LOG_CRIT, LOG_ERR => EVENTLOG_ERROR_TYPE 9925 LOG_WARNING => EVENTLOG_WARNING_TYPE 9926 LOG_NOTICE, LOG_INFO, LOG_DEBUG => EVENTLOG_INFORMATION_TYPE 9927 9928 [Richard Levitte] 9929 9930 *) Made it possible to reconfigure with just the configuration 9931 argument "reconf" or "reconfigure". The command line arguments 9932 are stored in Makefile.ssl in the variable CONFIGURE_ARGS, 9933 and are retrieved from there when reconfiguring. 9934 [Richard Levitte] 9935 9936 *) MD4 implemented. 9937 [Assar Westerlund <assar@sics.se>, Richard Levitte] 9938 9939 *) Add the arguments -CAfile and -CApath to the pkcs12 utility. 9940 [Richard Levitte] 9941 9942 *) The obj_dat.pl script was messing up the sorting of object 9943 names. The reason was that it compared the quoted version 9944 of strings as a result "OCSP" > "OCSP Signing" because 9945 " > SPACE. Changed script to store unquoted versions of 9946 names and add quotes on output. It was also omitting some 9947 names from the lookup table if they were given a default 9948 value (that is if SN is missing it is given the same 9949 value as LN and vice versa), these are now added on the 9950 grounds that if an object has a name we should be able to 9951 look it up. Finally added warning output when duplicate 9952 short or long names are found. 9953 [Steve Henson] 9954 9955 *) Changes needed for Tandem NSK. 9956 [Scott Uroff <scott@xypro.com>] 9957 9958 *) Fix SSL 2.0 rollback checking: Due to an off-by-one error in 9959 RSA_padding_check_SSLv23(), special padding was never detected 9960 and thus the SSL 3.0/TLS 1.0 countermeasure against protocol 9961 version rollback attacks was not effective. 9962 9963 In s23_clnt.c, don't use special rollback-attack detection padding 9964 (RSA_SSLV23_PADDING) if SSL 2.0 is the only protocol enabled in the 9965 client; similarly, in s23_srvr.c, don't do the rollback check if 9966 SSL 2.0 is the only protocol enabled in the server. 9967 [Bodo Moeller] 9968 9969 *) Make it possible to get hexdumps of unprintable data with 'openssl 9970 asn1parse'. By implication, the functions ASN1_parse_dump() and 9971 BIO_dump_indent() are added. 9972 [Richard Levitte] 9973 9974 *) New functions ASN1_STRING_print_ex() and X509_NAME_print_ex() 9975 these print out strings and name structures based on various 9976 flags including RFC2253 support and proper handling of 9977 multibyte characters. Added options to the 'x509' utility 9978 to allow the various flags to be set. 9979 [Steve Henson] 9980 9981 *) Various fixes to use ASN1_TIME instead of ASN1_UTCTIME. 9982 Also change the functions X509_cmp_current_time() and 9983 X509_gmtime_adj() work with an ASN1_TIME structure, 9984 this will enable certificates using GeneralizedTime in validity 9985 dates to be checked. 9986 [Steve Henson] 9987 9988 *) Make the NEG_PUBKEY_BUG code (which tolerates invalid 9989 negative public key encodings) on by default, 9990 NO_NEG_PUBKEY_BUG can be set to disable it. 9991 [Steve Henson] 9992 9993 *) New function c2i_ASN1_OBJECT() which acts on ASN1_OBJECT 9994 content octets. An i2c_ASN1_OBJECT is unnecessary because 9995 the encoding can be trivially obtained from the structure. 9996 [Steve Henson] 9997 9998 *) crypto/err.c locking bugfix: Use write locks (CRYPTO_w_[un]lock), 9999 not read locks (CRYPTO_r_[un]lock). 10000 [Bodo Moeller] 10001 10002 *) A first attempt at creating official support for shared 10003 libraries through configuration. I've kept it so the 10004 default is static libraries only, and the OpenSSL programs 10005 are always statically linked for now, but there are 10006 preparations for dynamic linking in place. 10007 This has been tested on Linux and Tru64. 10008 [Richard Levitte] 10009 10010 *) Randomness polling function for Win9x, as described in: 10011 Peter Gutmann, Software Generation of Practically Strong 10012 Random Numbers. 10013 [Ulf Möller] 10014 10015 *) Fix so PRNG is seeded in req if using an already existing 10016 DSA key. 10017 [Steve Henson] 10018 10019 *) New options to smime application. -inform and -outform 10020 allow alternative formats for the S/MIME message including 10021 PEM and DER. The -content option allows the content to be 10022 specified separately. This should allow things like Netscape 10023 form signing output easier to verify. 10024 [Steve Henson] 10025 10026 *) Fix the ASN1 encoding of tags using the 'long form'. 10027 [Steve Henson] 10028 10029 *) New ASN1 functions, i2c_* and c2i_* for INTEGER and BIT 10030 STRING types. These convert content octets to and from the 10031 underlying type. The actual tag and length octets are 10032 already assumed to have been read in and checked. These 10033 are needed because all other string types have virtually 10034 identical handling apart from the tag. By having versions 10035 of the ASN1 functions that just operate on content octets 10036 IMPLICIT tagging can be handled properly. It also allows 10037 the ASN1_ENUMERATED code to be cut down because ASN1_ENUMERATED 10038 and ASN1_INTEGER are identical apart from the tag. 10039 [Steve Henson] 10040 10041 *) Change the handling of OID objects as follows: 10042 10043 - New object identifiers are inserted in objects.txt, following 10044 the syntax given in objects.README. 10045 - objects.pl is used to process obj_mac.num and create a new 10046 obj_mac.h. 10047 - obj_dat.pl is used to create a new obj_dat.h, using the data in 10048 obj_mac.h. 10049 10050 This is currently kind of a hack, and the perl code in objects.pl 10051 isn't very elegant, but it works as I intended. The simplest way 10052 to check that it worked correctly is to look in obj_dat.h and 10053 check the array nid_objs and make sure the objects haven't moved 10054 around (this is important!). Additions are OK, as well as 10055 consistent name changes. 10056 [Richard Levitte] 10057 10058 *) Add BSD-style MD5-based passwords to 'openssl passwd' (option '-1'). 10059 [Bodo Moeller] 10060 10061 *) Addition of the command line parameter '-rand file' to 'openssl req'. 10062 The given file adds to whatever has already been seeded into the 10063 random pool through the RANDFILE configuration file option or 10064 environment variable, or the default random state file. 10065 [Richard Levitte] 10066 10067 *) mkstack.pl now sorts each macro group into lexical order. 10068 Previously the output order depended on the order the files 10069 appeared in the directory, resulting in needless rewriting 10070 of safestack.h . 10071 [Steve Henson] 10072 10073 *) Patches to make OpenSSL compile under Win32 again. Mostly 10074 work arounds for the VC++ problem that it treats func() as 10075 func(void). Also stripped out the parts of mkdef.pl that 10076 added extra typesafe functions: these no longer exist. 10077 [Steve Henson] 10078 10079 *) Reorganisation of the stack code. The macros are now all 10080 collected in safestack.h . Each macro is defined in terms of 10081 a "stack macro" of the form SKM_<name>(type, a, b). The 10082 DEBUG_SAFESTACK is now handled in terms of function casts, 10083 this has the advantage of retaining type safety without the 10084 use of additional functions. If DEBUG_SAFESTACK is not defined 10085 then the non typesafe macros are used instead. Also modified the 10086 mkstack.pl script to handle the new form. Needs testing to see 10087 if which (if any) compilers it chokes and maybe make DEBUG_SAFESTACK 10088 the default if no major problems. Similar behaviour for ASN1_SET_OF 10089 and PKCS12_STACK_OF. 10090 [Steve Henson] 10091 10092 *) When some versions of IIS use the 'NET' form of private key the 10093 key derivation algorithm is different. Normally MD5(password) is 10094 used as a 128 bit RC4 key. In the modified case 10095 MD5(MD5(password) + "SGCKEYSALT") is used instead. Added some 10096 new functions i2d_RSA_NET(), d2i_RSA_NET() etc which are the same 10097 as the old Netscape_RSA functions except they have an additional 10098 'sgckey' parameter which uses the modified algorithm. Also added 10099 an -sgckey command line option to the rsa utility. Thanks to 10100 Adrian Peck <bertie@ncipher.com> for posting details of the modified 10101 algorithm to openssl-dev. 10102 [Steve Henson] 10103 10104 *) The evp_local.h macros were using 'c.##kname' which resulted in 10105 invalid expansion on some systems (SCO 5.0.5 for example). 10106 Corrected to 'c.kname'. 10107 [Phillip Porch <root@theporch.com>] 10108 10109 *) New X509_get1_email() and X509_REQ_get1_email() functions that return 10110 a STACK of email addresses from a certificate or request, these look 10111 in the subject name and the subject alternative name extensions and 10112 omit any duplicate addresses. 10113 [Steve Henson] 10114 10115 *) Re-implement BN_mod_exp2_mont using independent (and larger) windows. 10116 This makes DSA verification about 2 % faster. 10117 [Bodo Moeller] 10118 10119 *) Increase maximum window size in BN_mod_exp_... to 6 bits instead of 5 10120 (meaning that now 2^5 values will be precomputed, which is only 4 KB 10121 plus overhead for 1024 bit moduli). 10122 This makes exponentiations about 0.5 % faster for 1024 bit 10123 exponents (as measured by "openssl speed rsa2048"). 10124 [Bodo Moeller] 10125 10126 *) Rename memory handling macros to avoid conflicts with other 10127 software: 10128 Malloc => OPENSSL_malloc 10129 Malloc_locked => OPENSSL_malloc_locked 10130 Realloc => OPENSSL_realloc 10131 Free => OPENSSL_free 10132 [Richard Levitte] 10133 10134 *) New function BN_mod_exp_mont_word for small bases (roughly 15% 10135 faster than BN_mod_exp_mont, i.e. 7% for a full DH exchange). 10136 [Bodo Moeller] 10137 10138 *) CygWin32 support. 10139 [John Jarvie <jjarvie@newsguy.com>] 10140 10141 *) The type-safe stack code has been rejigged. It is now only compiled 10142 in when OpenSSL is configured with the DEBUG_SAFESTACK option and 10143 by default all type-specific stack functions are "#define"d back to 10144 standard stack functions. This results in more streamlined output 10145 but retains the type-safety checking possibilities of the original 10146 approach. 10147 [Geoff Thorpe] 10148 10149 *) The STACK code has been cleaned up, and certain type declarations 10150 that didn't make a lot of sense have been brought in line. This has 10151 also involved a cleanup of sorts in safestack.h to more correctly 10152 map type-safe stack functions onto their plain stack counterparts. 10153 This work has also resulted in a variety of "const"ifications of 10154 lots of the code, especially "_cmp" operations which should normally 10155 be prototyped with "const" parameters anyway. 10156 [Geoff Thorpe] 10157 10158 *) When generating bytes for the first time in md_rand.c, 'stir the pool' 10159 by seeding with STATE_SIZE dummy bytes (with zero entropy count). 10160 (The PRNG state consists of two parts, the large pool 'state' and 'md', 10161 where all of 'md' is used each time the PRNG is used, but 'state' 10162 is used only indexed by a cyclic counter. As entropy may not be 10163 well distributed from the beginning, 'md' is important as a 10164 chaining variable. However, the output function chains only half 10165 of 'md', i.e. 80 bits. ssleay_rand_add, on the other hand, chains 10166 all of 'md', and seeding with STATE_SIZE dummy bytes will result 10167 in all of 'state' being rewritten, with the new values depending 10168 on virtually all of 'md'. This overcomes the 80 bit limitation.) 10169 [Bodo Moeller] 10170 10171 *) In ssl/s2_clnt.c and ssl/s3_clnt.c, call ERR_clear_error() when 10172 the handshake is continued after ssl_verify_cert_chain(); 10173 otherwise, if SSL_VERIFY_NONE is set, remaining error codes 10174 can lead to 'unexplainable' connection aborts later. 10175 [Bodo Moeller; problem tracked down by Lutz Jaenicke] 10176 10177 *) Major EVP API cipher revision. 10178 Add hooks for extra EVP features. This allows various cipher 10179 parameters to be set in the EVP interface. Support added for variable 10180 key length ciphers via the EVP_CIPHER_CTX_set_key_length() function and 10181 setting of RC2 and RC5 parameters. 10182 10183 Modify EVP_OpenInit() and EVP_SealInit() to cope with variable key length 10184 ciphers. 10185 10186 Remove lots of duplicated code from the EVP library. For example *every* 10187 cipher init() function handles the 'iv' in the same way according to the 10188 cipher mode. They also all do nothing if the 'key' parameter is NULL and 10189 for CFB and OFB modes they zero ctx->num. 10190 10191 New functionality allows removal of S/MIME code RC2 hack. 10192 10193 Most of the routines have the same form and so can be declared in terms 10194 of macros. 10195 10196 By shifting this to the top level EVP_CipherInit() it can be removed from 10197 all individual ciphers. If the cipher wants to handle IVs or keys 10198 differently it can set the EVP_CIPH_CUSTOM_IV or EVP_CIPH_ALWAYS_CALL_INIT 10199 flags. 10200 10201 Change lots of functions like EVP_EncryptUpdate() to now return a 10202 value: although software versions of the algorithms cannot fail 10203 any installed hardware versions can. 10204 [Steve Henson] 10205 10206 *) Implement SSL_OP_TLS_ROLLBACK_BUG: In ssl3_get_client_key_exchange, if 10207 this option is set, tolerate broken clients that send the negotiated 10208 protocol version number instead of the requested protocol version 10209 number. 10210 [Bodo Moeller] 10211 10212 *) Call dh_tmp_cb (set by ..._TMP_DH_CB) with correct 'is_export' flag; 10213 i.e. non-zero for export ciphersuites, zero otherwise. 10214 Previous versions had this flag inverted, inconsistent with 10215 rsa_tmp_cb (..._TMP_RSA_CB). 10216 [Bodo Moeller; problem reported by Amit Chopra] 10217 10218 *) Add missing DSA library text string. Work around for some IIS 10219 key files with invalid SEQUENCE encoding. 10220 [Steve Henson] 10221 10222 *) Add a document (doc/standards.txt) that list all kinds of standards 10223 and so on that are implemented in OpenSSL. 10224 [Richard Levitte] 10225 10226 *) Enhance c_rehash script. Old version would mishandle certificates 10227 with the same subject name hash and wouldn't handle CRLs at all. 10228 Added -fingerprint option to crl utility, to support new c_rehash 10229 features. 10230 [Steve Henson] 10231 10232 *) Eliminate non-ANSI declarations in crypto.h and stack.h. 10233 [Ulf Möller] 10234 10235 *) Fix for SSL server purpose checking. Server checking was 10236 rejecting certificates which had extended key usage present 10237 but no ssl client purpose. 10238 [Steve Henson, reported by Rene Grosser <grosser@hisolutions.com>] 10239 10240 *) Make PKCS#12 code work with no password. The PKCS#12 spec 10241 is a little unclear about how a blank password is handled. 10242 Since the password in encoded as a BMPString with terminating 10243 double NULL a zero length password would end up as just the 10244 double NULL. However no password at all is different and is 10245 handled differently in the PKCS#12 key generation code. NS 10246 treats a blank password as zero length. MSIE treats it as no 10247 password on export: but it will try both on import. We now do 10248 the same: PKCS12_parse() tries zero length and no password if 10249 the password is set to "" or NULL (NULL is now a valid password: 10250 it wasn't before) as does the pkcs12 application. 10251 [Steve Henson] 10252 10253 *) Bugfixes in apps/x509.c: Avoid a memory leak; and don't use 10254 perror when PEM_read_bio_X509_REQ fails, the error message must 10255 be obtained from the error queue. 10256 [Bodo Moeller] 10257 10258 *) Avoid 'thread_hash' memory leak in crypto/err/err.c by freeing 10259 it in ERR_remove_state if appropriate, and change ERR_get_state 10260 accordingly to avoid race conditions (this is necessary because 10261 thread_hash is no longer constant once set). 10262 [Bodo Moeller] 10263 10264 *) Bugfix for linux-elf makefile.one. 10265 [Ulf Möller] 10266 10267 *) RSA_get_default_method() will now cause a default 10268 RSA_METHOD to be chosen if one doesn't exist already. 10269 Previously this was only set during a call to RSA_new() 10270 or RSA_new_method(NULL) meaning it was possible for 10271 RSA_get_default_method() to return NULL. 10272 [Geoff Thorpe] 10273 10274 *) Added native name translation to the existing DSO code 10275 that will convert (if the flag to do so is set) filenames 10276 that are sufficiently small and have no path information 10277 into a canonical native form. Eg. "blah" converted to 10278 "libblah.so" or "blah.dll" etc. 10279 [Geoff Thorpe] 10280 10281 *) New function ERR_error_string_n(e, buf, len) which is like 10282 ERR_error_string(e, buf), but writes at most 'len' bytes 10283 including the 0 terminator. For ERR_error_string_n, 'buf' 10284 may not be NULL. 10285 [Damien Miller <djm@mindrot.org>, Bodo Moeller] 10286 10287 *) CONF library reworked to become more general. A new CONF 10288 configuration file reader "class" is implemented as well as a 10289 new functions (NCONF_*, for "New CONF") to handle it. The now 10290 old CONF_* functions are still there, but are reimplemented to 10291 work in terms of the new functions. Also, a set of functions 10292 to handle the internal storage of the configuration data is 10293 provided to make it easier to write new configuration file 10294 reader "classes" (I can definitely see something reading a 10295 configuration file in XML format, for example), called _CONF_*, 10296 or "the configuration storage API"... 10297 10298 The new configuration file reading functions are: 10299 10300 NCONF_new, NCONF_free, NCONF_load, NCONF_load_fp, NCONF_load_bio, 10301 NCONF_get_section, NCONF_get_string, NCONF_get_numbre 10302 10303 NCONF_default, NCONF_WIN32 10304 10305 NCONF_dump_fp, NCONF_dump_bio 10306 10307 NCONF_default and NCONF_WIN32 are method (or "class") choosers, 10308 NCONF_new creates a new CONF object. This works in the same way 10309 as other interfaces in OpenSSL, like the BIO interface. 10310 NCONF_dump_* dump the internal storage of the configuration file, 10311 which is useful for debugging. All other functions take the same 10312 arguments as the old CONF_* functions wth the exception of the 10313 first that must be a `CONF *' instead of a `LHASH *'. 10314 10315 To make it easer to use the new classes with the old CONF_* functions, 10316 the function CONF_set_default_method is provided. 10317 [Richard Levitte] 10318 10319 *) Add '-tls1' option to 'openssl ciphers', which was already 10320 mentioned in the documentation but had not been implemented. 10321 (This option is not yet really useful because even the additional 10322 experimental TLS 1.0 ciphers are currently treated as SSL 3.0 ciphers.) 10323 [Bodo Moeller] 10324 10325 *) Initial DSO code added into libcrypto for letting OpenSSL (and 10326 OpenSSL-based applications) load shared libraries and bind to 10327 them in a portable way. 10328 [Geoff Thorpe, with contributions from Richard Levitte] 10329 10330 Changes between 0.9.5 and 0.9.5a [1 Apr 2000] 10331 10332 *) Make sure _lrotl and _lrotr are only used with MSVC. 10333 10334 *) Use lock CRYPTO_LOCK_RAND correctly in ssleay_rand_status 10335 (the default implementation of RAND_status). 10336 10337 *) Rename openssl x509 option '-crlext', which was added in 0.9.5, 10338 to '-clrext' (= clear extensions), as intended and documented. 10339 [Bodo Moeller; inconsistency pointed out by Michael Attili 10340 <attili@amaxo.com>] 10341 10342 *) Fix for HMAC. It wasn't zeroing the rest of the block if the key length 10343 was larger than the MD block size. 10344 [Steve Henson, pointed out by Yost William <YostW@tce.com>] 10345 10346 *) Modernise PKCS12_parse() so it uses STACK_OF(X509) for its ca argument 10347 fix a leak when the ca argument was passed as NULL. Stop X509_PUBKEY_set() 10348 using the passed key: if the passed key was a private key the result 10349 of X509_print(), for example, would be to print out all the private key 10350 components. 10351 [Steve Henson] 10352 10353 *) des_quad_cksum() byte order bug fix. 10354 [Ulf Möller, using the problem description in krb4-0.9.7, where 10355 the solution is attributed to Derrick J Brashear <shadow@DEMENTIA.ORG>] 10356 10357 *) Fix so V_ASN1_APP_CHOOSE works again: however its use is strongly 10358 discouraged. 10359 [Steve Henson, pointed out by Brian Korver <briank@cs.stanford.edu>] 10360 10361 *) For easily testing in shell scripts whether some command 10362 'openssl XXX' exists, the new pseudo-command 'openssl no-XXX' 10363 returns with exit code 0 iff no command of the given name is available. 10364 'no-XXX' is printed in this case, 'XXX' otherwise. In both cases, 10365 the output goes to stdout and nothing is printed to stderr. 10366 Additional arguments are always ignored. 10367 10368 Since for each cipher there is a command of the same name, 10369 the 'no-cipher' compilation switches can be tested this way. 10370 10371 ('openssl no-XXX' is not able to detect pseudo-commands such 10372 as 'quit', 'list-XXX-commands', or 'no-XXX' itself.) 10373 [Bodo Moeller] 10374 10375 *) Update test suite so that 'make test' succeeds in 'no-rsa' configuration. 10376 [Bodo Moeller] 10377 10378 *) For SSL_[CTX_]set_tmp_dh, don't create a DH key if SSL_OP_SINGLE_DH_USE 10379 is set; it will be thrown away anyway because each handshake creates 10380 its own key. 10381 ssl_cert_dup, which is used by SSL_new, now copies DH keys in addition 10382 to parameters -- in previous versions (since OpenSSL 0.9.3) the 10383 'default key' from SSL_CTX_set_tmp_dh would always be lost, meaning 10384 you effectively got SSL_OP_SINGLE_DH_USE when using this macro. 10385 [Bodo Moeller] 10386 10387 *) New s_client option -ign_eof: EOF at stdin is ignored, and 10388 'Q' and 'R' lose their special meanings (quit/renegotiate). 10389 This is part of what -quiet does; unlike -quiet, -ign_eof 10390 does not suppress any output. 10391 [Richard Levitte] 10392 10393 *) Add compatibility options to the purpose and trust code. The 10394 purpose X509_PURPOSE_ANY is "any purpose" which automatically 10395 accepts a certificate or CA, this was the previous behaviour, 10396 with all the associated security issues. 10397 10398 X509_TRUST_COMPAT is the old trust behaviour: only and 10399 automatically trust self signed roots in certificate store. A 10400 new trust setting X509_TRUST_DEFAULT is used to specify that 10401 a purpose has no associated trust setting and it should instead 10402 use the value in the default purpose. 10403 [Steve Henson] 10404 10405 *) Fix the PKCS#8 DSA private key code so it decodes keys again 10406 and fix a memory leak. 10407 [Steve Henson] 10408 10409 *) In util/mkerr.pl (which implements 'make errors'), preserve 10410 reason strings from the previous version of the .c file, as 10411 the default to have only downcase letters (and digits) in 10412 automatically generated reasons codes is not always appropriate. 10413 [Bodo Moeller] 10414 10415 *) In ERR_load_ERR_strings(), build an ERR_LIB_SYS error reason table 10416 using strerror. Previously, ERR_reason_error_string() returned 10417 library names as reason strings for SYSerr; but SYSerr is a special 10418 case where small numbers are errno values, not library numbers. 10419 [Bodo Moeller] 10420 10421 *) Add '-dsaparam' option to 'openssl dhparam' application. This 10422 converts DSA parameters into DH parameters. (When creating parameters, 10423 DSA_generate_parameters is used.) 10424 [Bodo Moeller] 10425 10426 *) Include 'length' (recommended exponent length) in C code generated 10427 by 'openssl dhparam -C'. 10428 [Bodo Moeller] 10429 10430 *) The second argument to set_label in perlasm was already being used 10431 so couldn't be used as a "file scope" flag. Moved to third argument 10432 which was free. 10433 [Steve Henson] 10434 10435 *) In PEM_ASN1_write_bio and some other functions, use RAND_pseudo_bytes 10436 instead of RAND_bytes for encryption IVs and salts. 10437 [Bodo Moeller] 10438 10439 *) Include RAND_status() into RAND_METHOD instead of implementing 10440 it only for md_rand.c Otherwise replacing the PRNG by calling 10441 RAND_set_rand_method would be impossible. 10442 [Bodo Moeller] 10443 10444 *) Don't let DSA_generate_key() enter an infinite loop if the random 10445 number generation fails. 10446 [Bodo Moeller] 10447 10448 *) New 'rand' application for creating pseudo-random output. 10449 [Bodo Moeller] 10450 10451 *) Added configuration support for Linux/IA64 10452 [Rolf Haberrecker <rolf@suse.de>] 10453 10454 *) Assembler module support for Mingw32. 10455 [Ulf Möller] 10456 10457 *) Shared library support for HPUX (in shlib/). 10458 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE> and Anonymous] 10459 10460 *) Shared library support for Solaris gcc. 10461 [Lutz Behnke <behnke@trustcenter.de>] 10462 10463 Changes between 0.9.4 and 0.9.5 [28 Feb 2000] 10464 10465 *) PKCS7_encrypt() was adding text MIME headers twice because they 10466 were added manually and by SMIME_crlf_copy(). 10467 [Steve Henson] 10468 10469 *) In bntest.c don't call BN_rand with zero bits argument. 10470 [Steve Henson, pointed out by Andrew W. Gray <agray@iconsinc.com>] 10471 10472 *) BN_mul bugfix: In bn_mul_part_recursion() only the a>a[n] && b>b[n] 10473 case was implemented. This caused BN_div_recp() to fail occasionally. 10474 [Ulf Möller] 10475 10476 *) Add an optional second argument to the set_label() in the perl 10477 assembly language builder. If this argument exists and is set 10478 to 1 it signals that the assembler should use a symbol whose 10479 scope is the entire file, not just the current function. This 10480 is needed with MASM which uses the format label:: for this scope. 10481 [Steve Henson, pointed out by Peter Runestig <peter@runestig.com>] 10482 10483 *) Change the ASN1 types so they are typedefs by default. Before 10484 almost all types were #define'd to ASN1_STRING which was causing 10485 STACK_OF() problems: you couldn't declare STACK_OF(ASN1_UTF8STRING) 10486 for example. 10487 [Steve Henson] 10488 10489 *) Change names of new functions to the new get1/get0 naming 10490 convention: After 'get1', the caller owns a reference count 10491 and has to call ..._free; 'get0' returns a pointer to some 10492 data structure without incrementing reference counters. 10493 (Some of the existing 'get' functions increment a reference 10494 counter, some don't.) 10495 Similarly, 'set1' and 'add1' functions increase reference 10496 counters or duplicate objects. 10497 [Steve Henson] 10498 10499 *) Allow for the possibility of temp RSA key generation failure: 10500 the code used to assume it always worked and crashed on failure. 10501 [Steve Henson] 10502 10503 *) Fix potential buffer overrun problem in BIO_printf(). 10504 [Ulf Möller, using public domain code by Patrick Powell; problem 10505 pointed out by David Sacerdote <das33@cornell.edu>] 10506 10507 *) Support EGD <http://www.lothar.com/tech/crypto/>. New functions 10508 RAND_egd() and RAND_status(). In the command line application, 10509 the EGD socket can be specified like a seed file using RANDFILE 10510 or -rand. 10511 [Ulf Möller] 10512 10513 *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures. 10514 Some CAs (e.g. Verisign) distribute certificates in this form. 10515 [Steve Henson] 10516 10517 *) Remove the SSL_ALLOW_ADH compile option and set the default cipher 10518 list to exclude them. This means that no special compilation option 10519 is needed to use anonymous DH: it just needs to be included in the 10520 cipher list. 10521 [Steve Henson] 10522 10523 *) Change the EVP_MD_CTX_type macro so its meaning consistent with 10524 EVP_MD_type. The old functionality is available in a new macro called 10525 EVP_MD_md(). Change code that uses it and update docs. 10526 [Steve Henson] 10527 10528 *) ..._ctrl functions now have corresponding ..._callback_ctrl functions 10529 where the 'void *' argument is replaced by a function pointer argument. 10530 Previously 'void *' was abused to point to functions, which works on 10531 many platforms, but is not correct. As these functions are usually 10532 called by macros defined in OpenSSL header files, most source code 10533 should work without changes. 10534 [Richard Levitte] 10535 10536 *) <openssl/opensslconf.h> (which is created by Configure) now contains 10537 sections with information on -D... compiler switches used for 10538 compiling the library so that applications can see them. To enable 10539 one of these sections, a pre-processor symbol OPENSSL_..._DEFINES 10540 must be defined. E.g., 10541 #define OPENSSL_ALGORITHM_DEFINES 10542 #include <openssl/opensslconf.h> 10543 defines all pertinent NO_<algo> symbols, such as NO_IDEA, NO_RSA, etc. 10544 [Richard Levitte, Ulf and Bodo Möller] 10545 10546 *) Bugfix: Tolerate fragmentation and interleaving in the SSL 3/TLS 10547 record layer. 10548 [Bodo Moeller] 10549 10550 *) Change the 'other' type in certificate aux info to a STACK_OF 10551 X509_ALGOR. Although not an AlgorithmIdentifier as such it has 10552 the required ASN1 format: arbitrary types determined by an OID. 10553 [Steve Henson] 10554 10555 *) Add some PEM_write_X509_REQ_NEW() functions and a command line 10556 argument to 'req'. This is not because the function is newer or 10557 better than others it just uses the work 'NEW' in the certificate 10558 request header lines. Some software needs this. 10559 [Steve Henson] 10560 10561 *) Reorganise password command line arguments: now passwords can be 10562 obtained from various sources. Delete the PEM_cb function and make 10563 it the default behaviour: i.e. if the callback is NULL and the 10564 usrdata argument is not NULL interpret it as a null terminated pass 10565 phrase. If usrdata and the callback are NULL then the pass phrase 10566 is prompted for as usual. 10567 [Steve Henson] 10568 10569 *) Add support for the Compaq Atalla crypto accelerator. If it is installed, 10570 the support is automatically enabled. The resulting binaries will 10571 autodetect the card and use it if present. 10572 [Ben Laurie and Compaq Inc.] 10573 10574 *) Work around for Netscape hang bug. This sends certificate request 10575 and server done in one record. Since this is perfectly legal in the 10576 SSL/TLS protocol it isn't a "bug" option and is on by default. See 10577 the bugs/SSLv3 entry for more info. 10578 [Steve Henson] 10579 10580 *) HP-UX tune-up: new unified configs, HP C compiler bug workaround. 10581 [Andy Polyakov] 10582 10583 *) Add -rand argument to smime and pkcs12 applications and read/write 10584 of seed file. 10585 [Steve Henson] 10586 10587 *) New 'passwd' tool for crypt(3) and apr1 password hashes. 10588 [Bodo Moeller] 10589 10590 *) Add command line password options to the remaining applications. 10591 [Steve Henson] 10592 10593 *) Bug fix for BN_div_recp() for numerators with an even number of 10594 bits. 10595 [Ulf Möller] 10596 10597 *) More tests in bntest.c, and changed test_bn output. 10598 [Ulf Möller] 10599 10600 *) ./config recognizes MacOS X now. 10601 [Andy Polyakov] 10602 10603 *) Bug fix for BN_div() when the first words of num and divisor are 10604 equal (it gave wrong results if (rem=(n1-q*d0)&BN_MASK2) < d0). 10605 [Ulf Möller] 10606 10607 *) Add support for various broken PKCS#8 formats, and command line 10608 options to produce them. 10609 [Steve Henson] 10610 10611 *) New functions BN_CTX_start(), BN_CTX_get() and BT_CTX_end() to 10612 get temporary BIGNUMs from a BN_CTX. 10613 [Ulf Möller] 10614 10615 *) Correct return values in BN_mod_exp_mont() and BN_mod_exp2_mont() 10616 for p == 0. 10617 [Ulf Möller] 10618 10619 *) Change the SSLeay_add_all_*() functions to OpenSSL_add_all_*() and 10620 include a #define from the old name to the new. The original intent 10621 was that statically linked binaries could for example just call 10622 SSLeay_add_all_ciphers() to just add ciphers to the table and not 10623 link with digests. This never worked because SSLeay_add_all_digests() 10624 and SSLeay_add_all_ciphers() were in the same source file so calling 10625 one would link with the other. They are now in separate source files. 10626 [Steve Henson] 10627 10628 *) Add a new -notext option to 'ca' and a -pubkey option to 'spkac'. 10629 [Steve Henson] 10630 10631 *) Use a less unusual form of the Miller-Rabin primality test (it used 10632 a binary algorithm for exponentiation integrated into the Miller-Rabin 10633 loop, our standard modexp algorithms are faster). 10634 [Bodo Moeller] 10635 10636 *) Support for the EBCDIC character set completed. 10637 [Martin Kraemer <Martin.Kraemer@Mch.SNI.De>] 10638 10639 *) Source code cleanups: use const where appropriate, eliminate casts, 10640 use void * instead of char * in lhash. 10641 [Ulf Möller] 10642 10643 *) Bugfix: ssl3_send_server_key_exchange was not restartable 10644 (the state was not changed to SSL3_ST_SW_KEY_EXCH_B, and because of 10645 this the server could overwrite ephemeral keys that the client 10646 has already seen). 10647 [Bodo Moeller] 10648 10649 *) Turn DSA_is_prime into a macro that calls BN_is_prime, 10650 using 50 iterations of the Rabin-Miller test. 10651 10652 DSA_generate_parameters now uses BN_is_prime_fasttest (with 50 10653 iterations of the Rabin-Miller test as required by the appendix 10654 to FIPS PUB 186[-1]) instead of DSA_is_prime. 10655 As BN_is_prime_fasttest includes trial division, DSA parameter 10656 generation becomes much faster. 10657 10658 This implies a change for the callback functions in DSA_is_prime 10659 and DSA_generate_parameters: The callback function is called once 10660 for each positive witness in the Rabin-Miller test, not just 10661 occasionally in the inner loop; and the parameters to the 10662 callback function now provide an iteration count for the outer 10663 loop rather than for the current invocation of the inner loop. 10664 DSA_generate_parameters additionally can call the callback 10665 function with an 'iteration count' of -1, meaning that a 10666 candidate has passed the trial division test (when q is generated 10667 from an application-provided seed, trial division is skipped). 10668 [Bodo Moeller] 10669 10670 *) New function BN_is_prime_fasttest that optionally does trial 10671 division before starting the Rabin-Miller test and has 10672 an additional BN_CTX * argument (whereas BN_is_prime always 10673 has to allocate at least one BN_CTX). 10674 'callback(1, -1, cb_arg)' is called when a number has passed the 10675 trial division stage. 10676 [Bodo Moeller] 10677 10678 *) Fix for bug in CRL encoding. The validity dates weren't being handled 10679 as ASN1_TIME. 10680 [Steve Henson] 10681 10682 *) New -pkcs12 option to CA.pl script to write out a PKCS#12 file. 10683 [Steve Henson] 10684 10685 *) New function BN_pseudo_rand(). 10686 [Ulf Möller] 10687 10688 *) Clean up BN_mod_mul_montgomery(): replace the broken (and unreadable) 10689 bignum version of BN_from_montgomery() with the working code from 10690 SSLeay 0.9.0 (the word based version is faster anyway), and clean up 10691 the comments. 10692 [Ulf Möller] 10693 10694 *) Avoid a race condition in s2_clnt.c (function get_server_hello) that 10695 made it impossible to use the same SSL_SESSION data structure in 10696 SSL2 clients in multiple threads. 10697 [Bodo Moeller] 10698 10699 *) The return value of RAND_load_file() no longer counts bytes obtained 10700 by stat(). RAND_load_file(..., -1) is new and uses the complete file 10701 to seed the PRNG (previously an explicit byte count was required). 10702 [Ulf Möller, Bodo Möller] 10703 10704 *) Clean up CRYPTO_EX_DATA functions, some of these didn't have prototypes 10705 used (char *) instead of (void *) and had casts all over the place. 10706 [Steve Henson] 10707 10708 *) Make BN_generate_prime() return NULL on error if ret!=NULL. 10709 [Ulf Möller] 10710 10711 *) Retain source code compatibility for BN_prime_checks macro: 10712 BN_is_prime(..., BN_prime_checks, ...) now uses 10713 BN_prime_checks_for_size to determine the appropriate number of 10714 Rabin-Miller iterations. 10715 [Ulf Möller] 10716 10717 *) Diffie-Hellman uses "safe" primes: DH_check() return code renamed to 10718 DH_CHECK_P_NOT_SAFE_PRIME. 10719 (Check if this is true? OpenPGP calls them "strong".) 10720 [Ulf Möller] 10721 10722 *) Merge the functionality of "dh" and "gendh" programs into a new program 10723 "dhparam". The old programs are retained for now but will handle DH keys 10724 (instead of parameters) in future. 10725 [Steve Henson] 10726 10727 *) Make the ciphers, s_server and s_client programs check the return values 10728 when a new cipher list is set. 10729 [Steve Henson] 10730 10731 *) Enhance the SSL/TLS cipher mechanism to correctly handle the TLS 56bit 10732 ciphers. Before when the 56bit ciphers were enabled the sorting was 10733 wrong. 10734 10735 The syntax for the cipher sorting has been extended to support sorting by 10736 cipher-strength (using the strength_bits hard coded in the tables). 10737 The new command is "@STRENGTH" (see also doc/apps/ciphers.pod). 10738 10739 Fix a bug in the cipher-command parser: when supplying a cipher command 10740 string with an "undefined" symbol (neither command nor alphanumeric 10741 [A-Za-z0-9], ssl_set_cipher_list used to hang in an endless loop. Now 10742 an error is flagged. 10743 10744 Due to the strength-sorting extension, the code of the 10745 ssl_create_cipher_list() function was completely rearranged. I hope that 10746 the readability was also increased :-) 10747 [Lutz Jaenicke <Lutz.Jaenicke@aet.TU-Cottbus.DE>] 10748 10749 *) Minor change to 'x509' utility. The -CAcreateserial option now uses 1 10750 for the first serial number and places 2 in the serial number file. This 10751 avoids problems when the root CA is created with serial number zero and 10752 the first user certificate has the same issuer name and serial number 10753 as the root CA. 10754 [Steve Henson] 10755 10756 *) Fixes to X509_ATTRIBUTE utilities, change the 'req' program so it uses 10757 the new code. Add documentation for this stuff. 10758 [Steve Henson] 10759 10760 *) Changes to X509_ATTRIBUTE utilities. These have been renamed from 10761 X509_*() to X509at_*() on the grounds that they don't handle X509 10762 structures and behave in an analogous way to the X509v3 functions: 10763 they shouldn't be called directly but wrapper functions should be used 10764 instead. 10765 10766 So we also now have some wrapper functions that call the X509at functions 10767 when passed certificate requests. (TO DO: similar things can be done with 10768 PKCS#7 signed and unsigned attributes, PKCS#12 attributes and a few other 10769 things. Some of these need some d2i or i2d and print functionality 10770 because they handle more complex structures.) 10771 [Steve Henson] 10772 10773 *) Add missing #ifndefs that caused missing symbols when building libssl 10774 as a shared library without RSA. Use #ifndef NO_SSL2 instead of 10775 NO_RSA in ssl/s2*.c. 10776 [Kris Kennaway <kris@hub.freebsd.org>, modified by Ulf Möller] 10777 10778 *) Precautions against using the PRNG uninitialized: RAND_bytes() now 10779 has a return value which indicates the quality of the random data 10780 (1 = ok, 0 = not seeded). Also an error is recorded on the thread's 10781 error queue. New function RAND_pseudo_bytes() generates output that is 10782 guaranteed to be unique but not unpredictable. RAND_add is like 10783 RAND_seed, but takes an extra argument for an entropy estimate 10784 (RAND_seed always assumes full entropy). 10785 [Ulf Möller] 10786 10787 *) Do more iterations of Rabin-Miller probable prime test (specifically, 10788 3 for 1024-bit primes, 6 for 512-bit primes, 12 for 256-bit primes 10789 instead of only 2 for all lengths; see BN_prime_checks_for_size definition 10790 in crypto/bn/bn_prime.c for the complete table). This guarantees a 10791 false-positive rate of at most 2^-80 for random input. 10792 [Bodo Moeller] 10793 10794 *) Rewrite ssl3_read_n (ssl/s3_pkt.c) avoiding a couple of bugs. 10795 [Bodo Moeller] 10796 10797 *) New function X509_CTX_rget_chain() (renamed to X509_CTX_get1_chain 10798 in the 0.9.5 release), this returns the chain 10799 from an X509_CTX structure with a dup of the stack and all 10800 the X509 reference counts upped: so the stack will exist 10801 after X509_CTX_cleanup() has been called. Modify pkcs12.c 10802 to use this. 10803 10804 Also make SSL_SESSION_print() print out the verify return 10805 code. 10806 [Steve Henson] 10807 10808 *) Add manpage for the pkcs12 command. Also change the default 10809 behaviour so MAC iteration counts are used unless the new 10810 -nomaciter option is used. This improves file security and 10811 only older versions of MSIE (4.0 for example) need it. 10812 [Steve Henson] 10813 10814 *) Honor the no-xxx Configure options when creating .DEF files. 10815 [Ulf Möller] 10816 10817 *) Add PKCS#10 attributes to field table: challengePassword, 10818 unstructuredName and unstructuredAddress. These are taken from 10819 draft PKCS#9 v2.0 but are compatible with v1.2 provided no 10820 international characters are used. 10821 10822 More changes to X509_ATTRIBUTE code: allow the setting of types 10823 based on strings. Remove the 'loc' parameter when adding 10824 attributes because these will be a SET OF encoding which is sorted 10825 in ASN1 order. 10826 [Steve Henson] 10827 10828 *) Initial changes to the 'req' utility to allow request generation 10829 automation. This will allow an application to just generate a template 10830 file containing all the field values and have req construct the 10831 request. 10832 10833 Initial support for X509_ATTRIBUTE handling. Stacks of these are 10834 used all over the place including certificate requests and PKCS#7 10835 structures. They are currently handled manually where necessary with 10836 some primitive wrappers for PKCS#7. The new functions behave in a 10837 manner analogous to the X509 extension functions: they allow 10838 attributes to be looked up by NID and added. 10839 10840 Later something similar to the X509V3 code would be desirable to 10841 automatically handle the encoding, decoding and printing of the 10842 more complex types. The string types like challengePassword can 10843 be handled by the string table functions. 10844 10845 Also modified the multi byte string table handling. Now there is 10846 a 'global mask' which masks out certain types. The table itself 10847 can use the flag STABLE_NO_MASK to ignore the mask setting: this 10848 is useful when for example there is only one permissible type 10849 (as in countryName) and using the mask might result in no valid 10850 types at all. 10851 [Steve Henson] 10852 10853 *) Clean up 'Finished' handling, and add functions SSL_get_finished and 10854 SSL_get_peer_finished to allow applications to obtain the latest 10855 Finished messages sent to the peer or expected from the peer, 10856 respectively. (SSL_get_peer_finished is usually the Finished message 10857 actually received from the peer, otherwise the protocol will be aborted.) 10858 10859 As the Finished message are message digests of the complete handshake 10860 (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can 10861 be used for external authentication procedures when the authentication 10862 provided by SSL/TLS is not desired or is not enough. 10863 [Bodo Moeller] 10864 10865 *) Enhanced support for Alpha Linux is added. Now ./config checks if 10866 the host supports BWX extension and if Compaq C is present on the 10867 $PATH. Just exploiting of the BWX extension results in 20-30% 10868 performance kick for some algorithms, e.g. DES and RC4 to mention 10869 a couple. Compaq C in turn generates ~20% faster code for MD5 and 10870 SHA1. 10871 [Andy Polyakov] 10872 10873 *) Add support for MS "fast SGC". This is arguably a violation of the 10874 SSL3/TLS protocol. Netscape SGC does two handshakes: the first with 10875 weak crypto and after checking the certificate is SGC a second one 10876 with strong crypto. MS SGC stops the first handshake after receiving 10877 the server certificate message and sends a second client hello. Since 10878 a server will typically do all the time consuming operations before 10879 expecting any further messages from the client (server key exchange 10880 is the most expensive) there is little difference between the two. 10881 10882 To get OpenSSL to support MS SGC we have to permit a second client 10883 hello message after we have sent server done. In addition we have to 10884 reset the MAC if we do get this second client hello. 10885 [Steve Henson] 10886 10887 *) Add a function 'd2i_AutoPrivateKey()' this will automatically decide 10888 if a DER encoded private key is RSA or DSA traditional format. Changed 10889 d2i_PrivateKey_bio() to use it. This is only needed for the "traditional" 10890 format DER encoded private key. Newer code should use PKCS#8 format which 10891 has the key type encoded in the ASN1 structure. Added DER private key 10892 support to pkcs8 application. 10893 [Steve Henson] 10894 10895 *) SSL 3/TLS 1 servers now don't request certificates when an anonymous 10896 ciphersuites has been selected (as required by the SSL 3/TLS 1 10897 specifications). Exception: When SSL_VERIFY_FAIL_IF_NO_PEER_CERT 10898 is set, we interpret this as a request to violate the specification 10899 (the worst that can happen is a handshake failure, and 'correct' 10900 behaviour would result in a handshake failure anyway). 10901 [Bodo Moeller] 10902 10903 *) In SSL_CTX_add_session, take into account that there might be multiple 10904 SSL_SESSION structures with the same session ID (e.g. when two threads 10905 concurrently obtain them from an external cache). 10906 The internal cache can handle only one SSL_SESSION with a given ID, 10907 so if there's a conflict, we now throw out the old one to achieve 10908 consistency. 10909 [Bodo Moeller] 10910 10911 *) Add OIDs for idea and blowfish in CBC mode. This will allow both 10912 to be used in PKCS#5 v2.0 and S/MIME. Also add checking to 10913 some routines that use cipher OIDs: some ciphers do not have OIDs 10914 defined and so they cannot be used for S/MIME and PKCS#5 v2.0 for 10915 example. 10916 [Steve Henson] 10917 10918 *) Simplify the trust setting structure and code. Now we just have 10919 two sequences of OIDs for trusted and rejected settings. These will 10920 typically have values the same as the extended key usage extension 10921 and any application specific purposes. 10922 10923 The trust checking code now has a default behaviour: it will just 10924 check for an object with the same NID as the passed id. Functions can 10925 be provided to override either the default behaviour or the behaviour 10926 for a given id. SSL client, server and email already have functions 10927 in place for compatibility: they check the NID and also return "trusted" 10928 if the certificate is self signed. 10929 [Steve Henson] 10930 10931 *) Add d2i,i2d bio/fp functions for PrivateKey: these convert the 10932 traditional format into an EVP_PKEY structure. 10933 [Steve Henson] 10934 10935 *) Add a password callback function PEM_cb() which either prompts for 10936 a password if usr_data is NULL or otherwise assumes it is a null 10937 terminated password. Allow passwords to be passed on command line 10938 environment or config files in a few more utilities. 10939 [Steve Henson] 10940 10941 *) Add a bunch of DER and PEM functions to handle PKCS#8 format private 10942 keys. Add some short names for PKCS#8 PBE algorithms and allow them 10943 to be specified on the command line for the pkcs8 and pkcs12 utilities. 10944 Update documentation. 10945 [Steve Henson] 10946 10947 *) Support for ASN1 "NULL" type. This could be handled before by using 10948 ASN1_TYPE but there wasn't any function that would try to read a NULL 10949 and produce an error if it couldn't. For compatibility we also have 10950 ASN1_NULL_new() and ASN1_NULL_free() functions but these are faked and 10951 don't allocate anything because they don't need to. 10952 [Steve Henson] 10953 10954 *) Initial support for MacOS is now provided. Examine INSTALL.MacOS 10955 for details. 10956 [Andy Polyakov, Roy Woods <roy@centicsystems.ca>] 10957 10958 *) Rebuild of the memory allocation routines used by OpenSSL code and 10959 possibly others as well. The purpose is to make an interface that 10960 provide hooks so anyone can build a separate set of allocation and 10961 deallocation routines to be used by OpenSSL, for example memory 10962 pool implementations, or something else, which was previously hard 10963 since Malloc(), Realloc() and Free() were defined as macros having 10964 the values malloc, realloc and free, respectively (except for Win32 10965 compilations). The same is provided for memory debugging code. 10966 OpenSSL already comes with functionality to find memory leaks, but 10967 this gives people a chance to debug other memory problems. 10968 10969 With these changes, a new set of functions and macros have appeared: 10970 10971 CRYPTO_set_mem_debug_functions() [F] 10972 CRYPTO_get_mem_debug_functions() [F] 10973 CRYPTO_dbg_set_options() [F] 10974 CRYPTO_dbg_get_options() [F] 10975 CRYPTO_malloc_debug_init() [M] 10976 10977 The memory debug functions are NULL by default, unless the library 10978 is compiled with CRYPTO_MDEBUG or friends is defined. If someone 10979 wants to debug memory anyway, CRYPTO_malloc_debug_init() (which 10980 gives the standard debugging functions that come with OpenSSL) or 10981 CRYPTO_set_mem_debug_functions() (tells OpenSSL to use functions 10982 provided by the library user) must be used. When the standard 10983 debugging functions are used, CRYPTO_dbg_set_options can be used to 10984 request additional information: 10985 CRYPTO_dbg_set_options(V_CYRPTO_MDEBUG_xxx) corresponds to setting 10986 the CRYPTO_MDEBUG_xxx macro when compiling the library. 10987 10988 Also, things like CRYPTO_set_mem_functions will always give the 10989 expected result (the new set of functions is used for allocation 10990 and deallocation) at all times, regardless of platform and compiler 10991 options. 10992 10993 To finish it up, some functions that were never use in any other 10994 way than through macros have a new API and new semantic: 10995 10996 CRYPTO_dbg_malloc() 10997 CRYPTO_dbg_realloc() 10998 CRYPTO_dbg_free() 10999 11000 All macros of value have retained their old syntax. 11001 [Richard Levitte and Bodo Moeller] 11002 11003 *) Some S/MIME fixes. The OID for SMIMECapabilities was wrong, the 11004 ordering of SMIMECapabilities wasn't in "strength order" and there 11005 was a missing NULL in the AlgorithmIdentifier for the SHA1 signature 11006 algorithm. 11007 [Steve Henson] 11008 11009 *) Some ASN1 types with illegal zero length encoding (INTEGER, 11010 ENUMERATED and OBJECT IDENTIFIER) choked the ASN1 routines. 11011 [Frans Heymans <fheymans@isaserver.be>, modified by Steve Henson] 11012 11013 *) Merge in my S/MIME library for OpenSSL. This provides a simple 11014 S/MIME API on top of the PKCS#7 code, a MIME parser (with enough 11015 functionality to handle multipart/signed properly) and a utility 11016 called 'smime' to call all this stuff. This is based on code I 11017 originally wrote for Celo who have kindly allowed it to be 11018 included in OpenSSL. 11019 [Steve Henson] 11020 11021 *) Add variants des_set_key_checked and des_set_key_unchecked of 11022 des_set_key (aka des_key_sched). Global variable des_check_key 11023 decides which of these is called by des_set_key; this way 11024 des_check_key behaves as it always did, but applications and 11025 the library itself, which was buggy for des_check_key == 1, 11026 have a cleaner way to pick the version they need. 11027 [Bodo Moeller] 11028 11029 *) New function PKCS12_newpass() which changes the password of a 11030 PKCS12 structure. 11031 [Steve Henson] 11032 11033 *) Modify X509_TRUST and X509_PURPOSE so it also uses a static and 11034 dynamic mix. In both cases the ids can be used as an index into the 11035 table. Also modified the X509_TRUST_add() and X509_PURPOSE_add() 11036 functions so they accept a list of the field values and the 11037 application doesn't need to directly manipulate the X509_TRUST 11038 structure. 11039 [Steve Henson] 11040 11041 *) Modify the ASN1_STRING_TABLE stuff so it also uses bsearch and doesn't 11042 need initialising. 11043 [Steve Henson] 11044 11045 *) Modify the way the V3 extension code looks up extensions. This now 11046 works in a similar way to the object code: we have some "standard" 11047 extensions in a static table which is searched with OBJ_bsearch() 11048 and the application can add dynamic ones if needed. The file 11049 crypto/x509v3/ext_dat.h now has the info: this file needs to be 11050 updated whenever a new extension is added to the core code and kept 11051 in ext_nid order. There is a simple program 'tabtest.c' which checks 11052 this. New extensions are not added too often so this file can readily 11053 be maintained manually. 11054 11055 There are two big advantages in doing things this way. The extensions 11056 can be looked up immediately and no longer need to be "added" using 11057 X509V3_add_standard_extensions(): this function now does nothing. 11058 [Side note: I get *lots* of email saying the extension code doesn't 11059 work because people forget to call this function] 11060 Also no dynamic allocation is done unless new extensions are added: 11061 so if we don't add custom extensions there is no need to call 11062 X509V3_EXT_cleanup(). 11063 [Steve Henson] 11064 11065 *) Modify enc utility's salting as follows: make salting the default. Add a 11066 magic header, so unsalted files fail gracefully instead of just decrypting 11067 to garbage. This is because not salting is a big security hole, so people 11068 should be discouraged from doing it. 11069 [Ben Laurie] 11070 11071 *) Fixes and enhancements to the 'x509' utility. It allowed a message 11072 digest to be passed on the command line but it only used this 11073 parameter when signing a certificate. Modified so all relevant 11074 operations are affected by the digest parameter including the 11075 -fingerprint and -x509toreq options. Also -x509toreq choked if a 11076 DSA key was used because it didn't fix the digest. 11077 [Steve Henson] 11078 11079 *) Initial certificate chain verify code. Currently tests the untrusted 11080 certificates for consistency with the verify purpose (which is set 11081 when the X509_STORE_CTX structure is set up) and checks the pathlength. 11082 11083 There is a NO_CHAIN_VERIFY compilation option to keep the old behaviour: 11084 this is because it will reject chains with invalid extensions whereas 11085 every previous version of OpenSSL and SSLeay made no checks at all. 11086 11087 Trust code: checks the root CA for the relevant trust settings. Trust 11088 settings have an initial value consistent with the verify purpose: e.g. 11089 if the verify purpose is for SSL client use it expects the CA to be 11090 trusted for SSL client use. However the default value can be changed to 11091 permit custom trust settings: one example of this would be to only trust 11092 certificates from a specific "secure" set of CAs. 11093 11094 Also added X509_STORE_CTX_new() and X509_STORE_CTX_free() functions 11095 which should be used for version portability: especially since the 11096 verify structure is likely to change more often now. 11097 11098 SSL integration. Add purpose and trust to SSL_CTX and SSL and functions 11099 to set them. If not set then assume SSL clients will verify SSL servers 11100 and vice versa. 11101 11102 Two new options to the verify program: -untrusted allows a set of 11103 untrusted certificates to be passed in and -purpose which sets the 11104 intended purpose of the certificate. If a purpose is set then the 11105 new chain verify code is used to check extension consistency. 11106 [Steve Henson] 11107 11108 *) Support for the authority information access extension. 11109 [Steve Henson] 11110 11111 *) Modify RSA and DSA PEM read routines to transparently handle 11112 PKCS#8 format private keys. New *_PUBKEY_* functions that handle 11113 public keys in a format compatible with certificate 11114 SubjectPublicKeyInfo structures. Unfortunately there were already 11115 functions called *_PublicKey_* which used various odd formats so 11116 these are retained for compatibility: however the DSA variants were 11117 never in a public release so they have been deleted. Changed dsa/rsa 11118 utilities to handle the new format: note no releases ever handled public 11119 keys so we should be OK. 11120 11121 The primary motivation for this change is to avoid the same fiasco 11122 that dogs private keys: there are several incompatible private key 11123 formats some of which are standard and some OpenSSL specific and 11124 require various evil hacks to allow partial transparent handling and 11125 even then it doesn't work with DER formats. Given the option anything 11126 other than PKCS#8 should be dumped: but the other formats have to 11127 stay in the name of compatibility. 11128 11129 With public keys and the benefit of hindsight one standard format 11130 is used which works with EVP_PKEY, RSA or DSA structures: though 11131 it clearly returns an error if you try to read the wrong kind of key. 11132 11133 Added a -pubkey option to the 'x509' utility to output the public key. 11134 Also rename the EVP_PKEY_get_*() to EVP_PKEY_rget_*() 11135 (renamed to EVP_PKEY_get1_*() in the OpenSSL 0.9.5 release) and add 11136 EVP_PKEY_rset_*() functions (renamed to EVP_PKEY_set1_*()) 11137 that do the same as the EVP_PKEY_assign_*() except they up the 11138 reference count of the added key (they don't "swallow" the 11139 supplied key). 11140 [Steve Henson] 11141 11142 *) Fixes to crypto/x509/by_file.c the code to read in certificates and 11143 CRLs would fail if the file contained no certificates or no CRLs: 11144 added a new function to read in both types and return the number 11145 read: this means that if none are read it will be an error. The 11146 DER versions of the certificate and CRL reader would always fail 11147 because it isn't possible to mix certificates and CRLs in DER format 11148 without choking one or the other routine. Changed this to just read 11149 a certificate: this is the best we can do. Also modified the code 11150 in apps/verify.c to take notice of return codes: it was previously 11151 attempting to read in certificates from NULL pointers and ignoring 11152 any errors: this is one reason why the cert and CRL reader seemed 11153 to work. It doesn't check return codes from the default certificate 11154 routines: these may well fail if the certificates aren't installed. 11155 [Steve Henson] 11156 11157 *) Code to support otherName option in GeneralName. 11158 [Steve Henson] 11159 11160 *) First update to verify code. Change the verify utility 11161 so it warns if it is passed a self signed certificate: 11162 for consistency with the normal behaviour. X509_verify 11163 has been modified to it will now verify a self signed 11164 certificate if *exactly* the same certificate appears 11165 in the store: it was previously impossible to trust a 11166 single self signed certificate. This means that: 11167 openssl verify ss.pem 11168 now gives a warning about a self signed certificate but 11169 openssl verify -CAfile ss.pem ss.pem 11170 is OK. 11171 [Steve Henson] 11172 11173 *) For servers, store verify_result in SSL_SESSION data structure 11174 (and add it to external session representation). 11175 This is needed when client certificate verifications fails, 11176 but an application-provided verification callback (set by 11177 SSL_CTX_set_cert_verify_callback) allows accepting the session 11178 anyway (i.e. leaves x509_store_ctx->error != X509_V_OK 11179 but returns 1): When the session is reused, we have to set 11180 ssl->verify_result to the appropriate error code to avoid 11181 security holes. 11182 [Bodo Moeller, problem pointed out by Lutz Jaenicke] 11183 11184 *) Fix a bug in the new PKCS#7 code: it didn't consider the 11185 case in PKCS7_dataInit() where the signed PKCS7 structure 11186 didn't contain any existing data because it was being created. 11187 [Po-Cheng Chen <pocheng@nst.com.tw>, slightly modified by Steve Henson] 11188 11189 *) Add a salt to the key derivation routines in enc.c. This 11190 forms the first 8 bytes of the encrypted file. Also add a 11191 -S option to allow a salt to be input on the command line. 11192 [Steve Henson] 11193 11194 *) New function X509_cmp(). Oddly enough there wasn't a function 11195 to compare two certificates. We do this by working out the SHA1 11196 hash and comparing that. X509_cmp() will be needed by the trust 11197 code. 11198 [Steve Henson] 11199 11200 *) SSL_get1_session() is like SSL_get_session(), but increments 11201 the reference count in the SSL_SESSION returned. 11202 [Geoff Thorpe <geoff@eu.c2.net>] 11203 11204 *) Fix for 'req': it was adding a null to request attributes. 11205 Also change the X509_LOOKUP and X509_INFO code to handle 11206 certificate auxiliary information. 11207 [Steve Henson] 11208 11209 *) Add support for 40 and 64 bit RC2 and RC4 algorithms: document 11210 the 'enc' command. 11211 [Steve Henson] 11212 11213 *) Add the possibility to add extra information to the memory leak 11214 detecting output, to form tracebacks, showing from where each 11215 allocation was originated: CRYPTO_push_info("constant string") adds 11216 the string plus current file name and line number to a per-thread 11217 stack, CRYPTO_pop_info() does the obvious, CRYPTO_remove_all_info() 11218 is like calling CYRPTO_pop_info() until the stack is empty. 11219 Also updated memory leak detection code to be multi-thread-safe. 11220 [Richard Levitte] 11221 11222 *) Add options -text and -noout to pkcs7 utility and delete the 11223 encryption options which never did anything. Update docs. 11224 [Steve Henson] 11225 11226 *) Add options to some of the utilities to allow the pass phrase 11227 to be included on either the command line (not recommended on 11228 OSes like Unix) or read from the environment. Update the 11229 manpages and fix a few bugs. 11230 [Steve Henson] 11231 11232 *) Add a few manpages for some of the openssl commands. 11233 [Steve Henson] 11234 11235 *) Fix the -revoke option in ca. It was freeing up memory twice, 11236 leaking and not finding already revoked certificates. 11237 [Steve Henson] 11238 11239 *) Extensive changes to support certificate auxiliary information. 11240 This involves the use of X509_CERT_AUX structure and X509_AUX 11241 functions. An X509_AUX function such as PEM_read_X509_AUX() 11242 can still read in a certificate file in the usual way but it 11243 will also read in any additional "auxiliary information". By 11244 doing things this way a fair degree of compatibility can be 11245 retained: existing certificates can have this information added 11246 using the new 'x509' options. 11247 11248 Current auxiliary information includes an "alias" and some trust 11249 settings. The trust settings will ultimately be used in enhanced 11250 certificate chain verification routines: currently a certificate 11251 can only be trusted if it is self signed and then it is trusted 11252 for all purposes. 11253 [Steve Henson] 11254 11255 *) Fix assembler for Alpha (tested only on DEC OSF not Linux or *BSD). 11256 The problem was that one of the replacement routines had not been working 11257 since SSLeay releases. For now the offending routine has been replaced 11258 with non-optimised assembler. Even so, this now gives around 95% 11259 performance improvement for 1024 bit RSA signs. 11260 [Mark Cox] 11261 11262 *) Hack to fix PKCS#7 decryption when used with some unorthodox RC2 11263 handling. Most clients have the effective key size in bits equal to 11264 the key length in bits: so a 40 bit RC2 key uses a 40 bit (5 byte) key. 11265 A few however don't do this and instead use the size of the decrypted key 11266 to determine the RC2 key length and the AlgorithmIdentifier to determine 11267 the effective key length. In this case the effective key length can still 11268 be 40 bits but the key length can be 168 bits for example. This is fixed 11269 by manually forcing an RC2 key into the EVP_PKEY structure because the 11270 EVP code can't currently handle unusual RC2 key sizes: it always assumes 11271 the key length and effective key length are equal. 11272 [Steve Henson] 11273 11274 *) Add a bunch of functions that should simplify the creation of 11275 X509_NAME structures. Now you should be able to do: 11276 X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC, "Steve", -1, -1, 0); 11277 and have it automatically work out the correct field type and fill in 11278 the structures. The more adventurous can try: 11279 X509_NAME_add_entry_by_txt(nm, field, MBSTRING_UTF8, str, -1, -1, 0); 11280 and it will (hopefully) work out the correct multibyte encoding. 11281 [Steve Henson] 11282 11283 *) Change the 'req' utility to use the new field handling and multibyte 11284 copy routines. Before the DN field creation was handled in an ad hoc 11285 way in req, ca, and x509 which was rather broken and didn't support 11286 BMPStrings or UTF8Strings. Since some software doesn't implement 11287 BMPStrings or UTF8Strings yet, they can be enabled using the config file 11288 using the dirstring_type option. See the new comment in the default 11289 openssl.cnf for more info. 11290 [Steve Henson] 11291 11292 *) Make crypto/rand/md_rand.c more robust: 11293 - Assure unique random numbers after fork(). 11294 - Make sure that concurrent threads access the global counter and 11295 md serializably so that we never lose entropy in them 11296 or use exactly the same state in multiple threads. 11297 Access to the large state is not always serializable because 11298 the additional locking could be a performance killer, and 11299 md should be large enough anyway. 11300 [Bodo Moeller] 11301 11302 *) New file apps/app_rand.c with commonly needed functionality 11303 for handling the random seed file. 11304 11305 Use the random seed file in some applications that previously did not: 11306 ca, 11307 dsaparam -genkey (which also ignored its '-rand' option), 11308 s_client, 11309 s_server, 11310 x509 (when signing). 11311 Except on systems with /dev/urandom, it is crucial to have a random 11312 seed file at least for key creation, DSA signing, and for DH exchanges; 11313 for RSA signatures we could do without one. 11314 11315 gendh and gendsa (unlike genrsa) used to read only the first byte 11316 of each file listed in the '-rand' option. The function as previously 11317 found in genrsa is now in app_rand.c and is used by all programs 11318 that support '-rand'. 11319 [Bodo Moeller] 11320 11321 *) In RAND_write_file, use mode 0600 for creating files; 11322 don't just chmod when it may be too late. 11323 [Bodo Moeller] 11324 11325 *) Report an error from X509_STORE_load_locations 11326 when X509_LOOKUP_load_file or X509_LOOKUP_add_dir failed. 11327 [Bill Perry] 11328 11329 *) New function ASN1_mbstring_copy() this copies a string in either 11330 ASCII, Unicode, Universal (4 bytes per character) or UTF8 format 11331 into an ASN1_STRING type. A mask of permissible types is passed 11332 and it chooses the "minimal" type to use or an error if not type 11333 is suitable. 11334 [Steve Henson] 11335 11336 *) Add function equivalents to the various macros in asn1.h. The old 11337 macros are retained with an M_ prefix. Code inside the library can 11338 use the M_ macros. External code (including the openssl utility) 11339 should *NOT* in order to be "shared library friendly". 11340 [Steve Henson] 11341 11342 *) Add various functions that can check a certificate's extensions 11343 to see if it usable for various purposes such as SSL client, 11344 server or S/MIME and CAs of these types. This is currently 11345 VERY EXPERIMENTAL but will ultimately be used for certificate chain 11346 verification. Also added a -purpose flag to x509 utility to 11347 print out all the purposes. 11348 [Steve Henson] 11349 11350 *) Add a CRYPTO_EX_DATA to X509 certificate structure and associated 11351 functions. 11352 [Steve Henson] 11353 11354 *) New X509V3_{X509,CRL,REVOKED}_get_d2i() functions. These will search 11355 for, obtain and decode and extension and obtain its critical flag. 11356 This allows all the necessary extension code to be handled in a 11357 single function call. 11358 [Steve Henson] 11359 11360 *) RC4 tune-up featuring 30-40% performance improvement on most RISC 11361 platforms. See crypto/rc4/rc4_enc.c for further details. 11362 [Andy Polyakov] 11363 11364 *) New -noout option to asn1parse. This causes no output to be produced 11365 its main use is when combined with -strparse and -out to extract data 11366 from a file (which may not be in ASN.1 format). 11367 [Steve Henson] 11368 11369 *) Fix for pkcs12 program. It was hashing an invalid certificate pointer 11370 when producing the local key id. 11371 [Richard Levitte <levitte@stacken.kth.se>] 11372 11373 *) New option -dhparam in s_server. This allows a DH parameter file to be 11374 stated explicitly. If it is not stated then it tries the first server 11375 certificate file. The previous behaviour hard coded the filename 11376 "server.pem". 11377 [Steve Henson] 11378 11379 *) Add -pubin and -pubout options to the rsa and dsa commands. These allow 11380 a public key to be input or output. For example: 11381 openssl rsa -in key.pem -pubout -out pubkey.pem 11382 Also added necessary DSA public key functions to handle this. 11383 [Steve Henson] 11384 11385 *) Fix so PKCS7_dataVerify() doesn't crash if no certificates are contained 11386 in the message. This was handled by allowing 11387 X509_find_by_issuer_and_serial() to tolerate a NULL passed to it. 11388 [Steve Henson, reported by Sampo Kellomaki <sampo@mail.neuronio.pt>] 11389 11390 *) Fix for bug in d2i_ASN1_bytes(): other ASN1 functions add an extra null 11391 to the end of the strings whereas this didn't. This would cause problems 11392 if strings read with d2i_ASN1_bytes() were later modified. 11393 [Steve Henson, reported by Arne Ansper <arne@ats.cyber.ee>] 11394 11395 *) Fix for base64 decode bug. When a base64 bio reads only one line of 11396 data and it contains EOF it will end up returning an error. This is 11397 caused by input 46 bytes long. The cause is due to the way base64 11398 BIOs find the start of base64 encoded data. They do this by trying a 11399 trial decode on each line until they find one that works. When they 11400 do a flag is set and it starts again knowing it can pass all the 11401 data directly through the decoder. Unfortunately it doesn't reset 11402 the context it uses. This means that if EOF is reached an attempt 11403 is made to pass two EOFs through the context and this causes the 11404 resulting error. This can also cause other problems as well. As is 11405 usual with these problems it takes *ages* to find and the fix is 11406 trivial: move one line. 11407 [Steve Henson, reported by ian@uns.ns.ac.yu (Ivan Nejgebauer) ] 11408 11409 *) Ugly workaround to get s_client and s_server working under Windows. The 11410 old code wouldn't work because it needed to select() on sockets and the 11411 tty (for keypresses and to see if data could be written). Win32 only 11412 supports select() on sockets so we select() with a 1s timeout on the 11413 sockets and then see if any characters are waiting to be read, if none 11414 are present then we retry, we also assume we can always write data to 11415 the tty. This isn't nice because the code then blocks until we've 11416 received a complete line of data and it is effectively polling the 11417 keyboard at 1s intervals: however it's quite a bit better than not 11418 working at all :-) A dedicated Windows application might handle this 11419 with an event loop for example. 11420 [Steve Henson] 11421 11422 *) Enhance RSA_METHOD structure. Now there are two extra methods, rsa_sign 11423 and rsa_verify. When the RSA_FLAGS_SIGN_VER option is set these functions 11424 will be called when RSA_sign() and RSA_verify() are used. This is useful 11425 if rsa_pub_dec() and rsa_priv_enc() equivalents are not available. 11426 For this to work properly RSA_public_decrypt() and RSA_private_encrypt() 11427 should *not* be used: RSA_sign() and RSA_verify() must be used instead. 11428 This necessitated the support of an extra signature type NID_md5_sha1 11429 for SSL signatures and modifications to the SSL library to use it instead 11430 of calling RSA_public_decrypt() and RSA_private_encrypt(). 11431 [Steve Henson] 11432 11433 *) Add new -verify -CAfile and -CApath options to the crl program, these 11434 will lookup a CRL issuers certificate and verify the signature in a 11435 similar way to the verify program. Tidy up the crl program so it 11436 no longer accesses structures directly. Make the ASN1 CRL parsing a bit 11437 less strict. It will now permit CRL extensions even if it is not 11438 a V2 CRL: this will allow it to tolerate some broken CRLs. 11439 [Steve Henson] 11440 11441 *) Initialize all non-automatic variables each time one of the openssl 11442 sub-programs is started (this is necessary as they may be started 11443 multiple times from the "OpenSSL>" prompt). 11444 [Lennart Bang, Bodo Moeller] 11445 11446 *) Preliminary compilation option RSA_NULL which disables RSA crypto without 11447 removing all other RSA functionality (this is what NO_RSA does). This 11448 is so (for example) those in the US can disable those operations covered 11449 by the RSA patent while allowing storage and parsing of RSA keys and RSA 11450 key generation. 11451 [Steve Henson] 11452 11453 *) Non-copying interface to BIO pairs. 11454 (still largely untested) 11455 [Bodo Moeller] 11456 11457 *) New function ANS1_tag2str() to convert an ASN1 tag to a descriptive 11458 ASCII string. This was handled independently in various places before. 11459 [Steve Henson] 11460 11461 *) New functions UTF8_getc() and UTF8_putc() that parse and generate 11462 UTF8 strings a character at a time. 11463 [Steve Henson] 11464 11465 *) Use client_version from client hello to select the protocol 11466 (s23_srvr.c) and for RSA client key exchange verification 11467 (s3_srvr.c), as required by the SSL 3.0/TLS 1.0 specifications. 11468 [Bodo Moeller] 11469 11470 *) Add various utility functions to handle SPKACs, these were previously 11471 handled by poking round in the structure internals. Added new function 11472 NETSCAPE_SPKI_print() to print out SPKAC and a new utility 'spkac' to 11473 print, verify and generate SPKACs. Based on an original idea from 11474 Massimiliano Pala <madwolf@comune.modena.it> but extensively modified. 11475 [Steve Henson] 11476 11477 *) RIPEMD160 is operational on all platforms and is back in 'make test'. 11478 [Andy Polyakov] 11479 11480 *) Allow the config file extension section to be overwritten on the 11481 command line. Based on an original idea from Massimiliano Pala 11482 <madwolf@comune.modena.it>. The new option is called -extensions 11483 and can be applied to ca, req and x509. Also -reqexts to override 11484 the request extensions in req and -crlexts to override the crl extensions 11485 in ca. 11486 [Steve Henson] 11487 11488 *) Add new feature to the SPKAC handling in ca. Now you can include 11489 the same field multiple times by preceding it by "XXXX." for example: 11490 1.OU="Unit name 1" 11491 2.OU="Unit name 2" 11492 this is the same syntax as used in the req config file. 11493 [Steve Henson] 11494 11495 *) Allow certificate extensions to be added to certificate requests. These 11496 are specified in a 'req_extensions' option of the req section of the 11497 config file. They can be printed out with the -text option to req but 11498 are otherwise ignored at present. 11499 [Steve Henson] 11500 11501 *) Fix a horrible bug in enc_read() in crypto/evp/bio_enc.c: if the first 11502 data read consists of only the final block it would not decrypted because 11503 EVP_CipherUpdate() would correctly report zero bytes had been decrypted. 11504 A misplaced 'break' also meant the decrypted final block might not be 11505 copied until the next read. 11506 [Steve Henson] 11507 11508 *) Initial support for DH_METHOD. Again based on RSA_METHOD. Also added 11509 a few extra parameters to the DH structure: these will be useful if 11510 for example we want the value of 'q' or implement X9.42 DH. 11511 [Steve Henson] 11512 11513 *) Initial support for DSA_METHOD. This is based on the RSA_METHOD and 11514 provides hooks that allow the default DSA functions or functions on a 11515 "per key" basis to be replaced. This allows hardware acceleration and 11516 hardware key storage to be handled without major modification to the 11517 library. Also added low level modexp hooks and CRYPTO_EX structure and 11518 associated functions. 11519 [Steve Henson] 11520 11521 *) Add a new flag to memory BIOs, BIO_FLAG_MEM_RDONLY. This marks the BIO 11522 as "read only": it can't be written to and the buffer it points to will 11523 not be freed. Reading from a read only BIO is much more efficient than 11524 a normal memory BIO. This was added because there are several times when 11525 an area of memory needs to be read from a BIO. The previous method was 11526 to create a memory BIO and write the data to it, this results in two 11527 copies of the data and an O(n^2) reading algorithm. There is a new 11528 function BIO_new_mem_buf() which creates a read only memory BIO from 11529 an area of memory. Also modified the PKCS#7 routines to use read only 11530 memory BIOs. 11531 [Steve Henson] 11532 11533 *) Bugfix: ssl23_get_client_hello did not work properly when called in 11534 state SSL23_ST_SR_CLNT_HELLO_B, i.e. when the first 7 bytes of 11535 a SSLv2-compatible client hello for SSLv3 or TLSv1 could be read, 11536 but a retry condition occurred while trying to read the rest. 11537 [Bodo Moeller] 11538 11539 *) The PKCS7_ENC_CONTENT_new() function was setting the content type as 11540 NID_pkcs7_encrypted by default: this was wrong since this should almost 11541 always be NID_pkcs7_data. Also modified the PKCS7_set_type() to handle 11542 the encrypted data type: this is a more sensible place to put it and it 11543 allows the PKCS#12 code to be tidied up that duplicated this 11544 functionality. 11545 [Steve Henson] 11546 11547 *) Changed obj_dat.pl script so it takes its input and output files on 11548 the command line. This should avoid shell escape redirection problems 11549 under Win32. 11550 [Steve Henson] 11551 11552 *) Initial support for certificate extension requests, these are included 11553 in things like Xenroll certificate requests. Included functions to allow 11554 extensions to be obtained and added. 11555 [Steve Henson] 11556 11557 *) -crlf option to s_client and s_server for sending newlines as 11558 CRLF (as required by many protocols). 11559 [Bodo Moeller] 11560 11561 Changes between 0.9.3a and 0.9.4 [09 Aug 1999] 11562 11563 *) Install libRSAglue.a when OpenSSL is built with RSAref. 11564 [Ralf S. Engelschall] 11565 11566 *) A few more ``#ifndef NO_FP_API / #endif'' pairs for consistency. 11567 [Andrija Antonijevic <TheAntony2@bigfoot.com>] 11568 11569 *) Fix -startdate and -enddate (which was missing) arguments to 'ca' 11570 program. 11571 [Steve Henson] 11572 11573 *) New function DSA_dup_DH, which duplicates DSA parameters/keys as 11574 DH parameters/keys (q is lost during that conversion, but the resulting 11575 DH parameters contain its length). 11576 11577 For 1024-bit p, DSA_generate_parameters followed by DSA_dup_DH is 11578 much faster than DH_generate_parameters (which creates parameters 11579 where p = 2*q + 1), and also the smaller q makes DH computations 11580 much more efficient (160-bit exponentiation instead of 1024-bit 11581 exponentiation); so this provides a convenient way to support DHE 11582 ciphersuites in SSL/TLS servers (see ssl/ssltest.c). It is of 11583 utter importance to use 11584 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 11585 or 11586 SSL_set_options(s_ctx, SSL_OP_SINGLE_DH_USE); 11587 when such DH parameters are used, because otherwise small subgroup 11588 attacks may become possible! 11589 [Bodo Moeller] 11590 11591 *) Avoid memory leak in i2d_DHparams. 11592 [Bodo Moeller] 11593 11594 *) Allow the -k option to be used more than once in the enc program: 11595 this allows the same encrypted message to be read by multiple recipients. 11596 [Steve Henson] 11597 11598 *) New function OBJ_obj2txt(buf, buf_len, a, no_name), this converts 11599 an ASN1_OBJECT to a text string. If the "no_name" parameter is set then 11600 it will always use the numerical form of the OID, even if it has a short 11601 or long name. 11602 [Steve Henson] 11603 11604 *) Added an extra RSA flag: RSA_FLAG_EXT_PKEY. Previously the rsa_mod_exp 11605 method only got called if p,q,dmp1,dmq1,iqmp components were present, 11606 otherwise bn_mod_exp was called. In the case of hardware keys for example 11607 no private key components need be present and it might store extra data 11608 in the RSA structure, which cannot be accessed from bn_mod_exp. 11609 By setting RSA_FLAG_EXT_PKEY rsa_mod_exp will always be called for 11610 private key operations. 11611 [Steve Henson] 11612 11613 *) Added support for SPARC Linux. 11614 [Andy Polyakov] 11615 11616 *) pem_password_cb function type incompatibly changed from 11617 typedef int pem_password_cb(char *buf, int size, int rwflag); 11618 to 11619 ....(char *buf, int size, int rwflag, void *userdata); 11620 so that applications can pass data to their callbacks: 11621 The PEM[_ASN1]_{read,write}... functions and macros now take an 11622 additional void * argument, which is just handed through whenever 11623 the password callback is called. 11624 [Damien Miller <dmiller@ilogic.com.au>; tiny changes by Bodo Moeller] 11625 11626 New function SSL_CTX_set_default_passwd_cb_userdata. 11627 11628 Compatibility note: As many C implementations push function arguments 11629 onto the stack in reverse order, the new library version is likely to 11630 interoperate with programs that have been compiled with the old 11631 pem_password_cb definition (PEM_whatever takes some data that 11632 happens to be on the stack as its last argument, and the callback 11633 just ignores this garbage); but there is no guarantee whatsoever that 11634 this will work. 11635 11636 *) The -DPLATFORM="\"$(PLATFORM)\"" definition and the similar -DCFLAGS=... 11637 (both in crypto/Makefile.ssl for use by crypto/cversion.c) caused 11638 problems not only on Windows, but also on some Unix platforms. 11639 To avoid problematic command lines, these definitions are now in an 11640 auto-generated file crypto/buildinf.h (created by crypto/Makefile.ssl 11641 for standard "make" builds, by util/mk1mf.pl for "mk1mf" builds). 11642 [Bodo Moeller] 11643 11644 *) MIPS III/IV assembler module is reimplemented. 11645 [Andy Polyakov] 11646 11647 *) More DES library cleanups: remove references to srand/rand and 11648 delete an unused file. 11649 [Ulf Möller] 11650 11651 *) Add support for the free Netwide assembler (NASM) under Win32, 11652 since not many people have MASM (ml) and it can be hard to obtain. 11653 This is currently experimental but it seems to work OK and pass all 11654 the tests. Check out INSTALL.W32 for info. 11655 [Steve Henson] 11656 11657 *) Fix memory leaks in s3_clnt.c: All non-anonymous SSL3/TLS1 connections 11658 without temporary keys kept an extra copy of the server key, 11659 and connections with temporary keys did not free everything in case 11660 of an error. 11661 [Bodo Moeller] 11662 11663 *) New function RSA_check_key and new openssl rsa option -check 11664 for verifying the consistency of RSA keys. 11665 [Ulf Moeller, Bodo Moeller] 11666 11667 *) Various changes to make Win32 compile work: 11668 1. Casts to avoid "loss of data" warnings in p5_crpt2.c 11669 2. Change unsigned int to int in b_dump.c to avoid "signed/unsigned 11670 comparison" warnings. 11671 3. Add sk_<TYPE>_sort to DEF file generator and do make update. 11672 [Steve Henson] 11673 11674 *) Add a debugging option to PKCS#5 v2 key generation function: when 11675 you #define DEBUG_PKCS5V2 passwords, salts, iteration counts and 11676 derived keys are printed to stderr. 11677 [Steve Henson] 11678 11679 *) Copy the flags in ASN1_STRING_dup(). 11680 [Roman E. Pavlov <pre@mo.msk.ru>] 11681 11682 *) The x509 application mishandled signing requests containing DSA 11683 keys when the signing key was also DSA and the parameters didn't match. 11684 11685 It was supposed to omit the parameters when they matched the signing key: 11686 the verifying software was then supposed to automatically use the CA's 11687 parameters if they were absent from the end user certificate. 11688 11689 Omitting parameters is no longer recommended. The test was also 11690 the wrong way round! This was probably due to unusual behaviour in 11691 EVP_cmp_parameters() which returns 1 if the parameters match. 11692 This meant that parameters were omitted when they *didn't* match and 11693 the certificate was useless. Certificates signed with 'ca' didn't have 11694 this bug. 11695 [Steve Henson, reported by Doug Erickson <Doug.Erickson@Part.NET>] 11696 11697 *) Memory leak checking (-DCRYPTO_MDEBUG) had some problems. 11698 The interface is as follows: 11699 Applications can use 11700 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON) aka MemCheck_start(), 11701 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF) aka MemCheck_stop(); 11702 "off" is now the default. 11703 The library internally uses 11704 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE) aka MemCheck_off(), 11705 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE) aka MemCheck_on() 11706 to disable memory-checking temporarily. 11707 11708 Some inconsistent states that previously were possible (and were 11709 even the default) are now avoided. 11710 11711 -DCRYPTO_MDEBUG_TIME is new and additionally stores the current time 11712 with each memory chunk allocated; this is occasionally more helpful 11713 than just having a counter. 11714 11715 -DCRYPTO_MDEBUG_THREAD is also new and adds the thread ID. 11716 11717 -DCRYPTO_MDEBUG_ALL enables all of the above, plus any future 11718 extensions. 11719 [Bodo Moeller] 11720 11721 *) Introduce "mode" for SSL structures (with defaults in SSL_CTX), 11722 which largely parallels "options", but is for changing API behaviour, 11723 whereas "options" are about protocol behaviour. 11724 Initial "mode" flags are: 11725 11726 SSL_MODE_ENABLE_PARTIAL_WRITE Allow SSL_write to report success when 11727 a single record has been written. 11728 SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER Don't insist that SSL_write 11729 retries use the same buffer location. 11730 (But all of the contents must be 11731 copied!) 11732 [Bodo Moeller] 11733 11734 *) Bugfix: SSL_set_options ignored its parameter, only SSL_CTX_set_options 11735 worked. 11736 11737 *) Fix problems with no-hmac etc. 11738 [Ulf Möller, pointed out by Brian Wellington <bwelling@tislabs.com>] 11739 11740 *) New functions RSA_get_default_method(), RSA_set_method() and 11741 RSA_get_method(). These allows replacement of RSA_METHODs without having 11742 to mess around with the internals of an RSA structure. 11743 [Steve Henson] 11744 11745 *) Fix memory leaks in DSA_do_sign and DSA_is_prime. 11746 Also really enable memory leak checks in openssl.c and in some 11747 test programs. 11748 [Chad C. Mulligan, Bodo Moeller] 11749 11750 *) Fix a bug in d2i_ASN1_INTEGER() and i2d_ASN1_INTEGER() which can mess 11751 up the length of negative integers. This has now been simplified to just 11752 store the length when it is first determined and use it later, rather 11753 than trying to keep track of where data is copied and updating it to 11754 point to the end. 11755 [Steve Henson, reported by Brien Wheeler 11756 <bwheeler@authentica-security.com>] 11757 11758 *) Add a new function PKCS7_signatureVerify. This allows the verification 11759 of a PKCS#7 signature but with the signing certificate passed to the 11760 function itself. This contrasts with PKCS7_dataVerify which assumes the 11761 certificate is present in the PKCS#7 structure. This isn't always the 11762 case: certificates can be omitted from a PKCS#7 structure and be 11763 distributed by "out of band" means (such as a certificate database). 11764 [Steve Henson] 11765 11766 *) Complete the PEM_* macros with DECLARE_PEM versions to replace the 11767 function prototypes in pem.h, also change util/mkdef.pl to add the 11768 necessary function names. 11769 [Steve Henson] 11770 11771 *) mk1mf.pl (used by Windows builds) did not properly read the 11772 options set by Configure in the top level Makefile, and Configure 11773 was not even able to write more than one option correctly. 11774 Fixed, now "no-idea no-rc5 -DCRYPTO_MDEBUG" etc. works as intended. 11775 [Bodo Moeller] 11776 11777 *) New functions CONF_load_bio() and CONF_load_fp() to allow a config 11778 file to be loaded from a BIO or FILE pointer. The BIO version will 11779 for example allow memory BIOs to contain config info. 11780 [Steve Henson] 11781 11782 *) New function "CRYPTO_num_locks" that returns CRYPTO_NUM_LOCKS. 11783 Whoever hopes to achieve shared-library compatibility across versions 11784 must use this, not the compile-time macro. 11785 (Exercise 0.9.4: Which is the minimum library version required by 11786 such programs?) 11787 Note: All this applies only to multi-threaded programs, others don't 11788 need locks. 11789 [Bodo Moeller] 11790 11791 *) Add missing case to s3_clnt.c state machine -- one of the new SSL tests 11792 through a BIO pair triggered the default case, i.e. 11793 SSLerr(...,SSL_R_UNKNOWN_STATE). 11794 [Bodo Moeller] 11795 11796 *) New "BIO pair" concept (crypto/bio/bss_bio.c) so that applications 11797 can use the SSL library even if none of the specific BIOs is 11798 appropriate. 11799 [Bodo Moeller] 11800 11801 *) Fix a bug in i2d_DSAPublicKey() which meant it returned the wrong value 11802 for the encoded length. 11803 [Jeon KyoungHo <khjeon@sds.samsung.co.kr>] 11804 11805 *) Add initial documentation of the X509V3 functions. 11806 [Steve Henson] 11807 11808 *) Add a new pair of functions PEM_write_PKCS8PrivateKey() and 11809 PEM_write_bio_PKCS8PrivateKey() that are equivalent to 11810 PEM_write_PrivateKey() and PEM_write_bio_PrivateKey() but use the more 11811 secure PKCS#8 private key format with a high iteration count. 11812 [Steve Henson] 11813 11814 *) Fix determination of Perl interpreter: A perl or perl5 11815 _directory_ in $PATH was also accepted as the interpreter. 11816 [Ralf S. Engelschall] 11817 11818 *) Fix demos/sign/sign.c: well there wasn't anything strictly speaking 11819 wrong with it but it was very old and did things like calling 11820 PEM_ASN1_read() directly and used MD5 for the hash not to mention some 11821 unusual formatting. 11822 [Steve Henson] 11823 11824 *) Fix demos/selfsign.c: it used obsolete and deleted functions, changed 11825 to use the new extension code. 11826 [Steve Henson] 11827 11828 *) Implement the PEM_read/PEM_write functions in crypto/pem/pem_all.c 11829 with macros. This should make it easier to change their form, add extra 11830 arguments etc. Fix a few PEM prototypes which didn't have cipher as a 11831 constant. 11832 [Steve Henson] 11833 11834 *) Add to configuration table a new entry that can specify an alternative 11835 name for unistd.h (for pre-POSIX systems); we need this for NeXTstep, 11836 according to Mark Crispin <MRC@Panda.COM>. 11837 [Bodo Moeller] 11838 11839#if 0 11840 *) DES CBC did not update the IV. Weird. 11841 [Ben Laurie] 11842#else 11843 des_cbc_encrypt does not update the IV, but des_ncbc_encrypt does. 11844 Changing the behaviour of the former might break existing programs -- 11845 where IV updating is needed, des_ncbc_encrypt can be used. 11846#endif 11847 11848 *) When bntest is run from "make test" it drives bc to check its 11849 calculations, as well as internally checking them. If an internal check 11850 fails, it needs to cause bc to give a non-zero result or make test carries 11851 on without noticing the failure. Fixed. 11852 [Ben Laurie] 11853 11854 *) DES library cleanups. 11855 [Ulf Möller] 11856 11857 *) Add support for PKCS#5 v2.0 PBE algorithms. This will permit PKCS#8 to be 11858 used with any cipher unlike PKCS#5 v1.5 which can at most handle 64 bit 11859 ciphers. NOTE: although the key derivation function has been verified 11860 against some published test vectors it has not been extensively tested 11861 yet. Added a -v2 "cipher" option to pkcs8 application to allow the use 11862 of v2.0. 11863 [Steve Henson] 11864 11865 *) Instead of "mkdir -p", which is not fully portable, use new 11866 Perl script "util/mkdir-p.pl". 11867 [Bodo Moeller] 11868 11869 *) Rewrite the way password based encryption (PBE) is handled. It used to 11870 assume that the ASN1 AlgorithmIdentifier parameter was a PBEParameter 11871 structure. This was true for the PKCS#5 v1.5 and PKCS#12 PBE algorithms 11872 but doesn't apply to PKCS#5 v2.0 where it can be something else. Now 11873 the 'parameter' field of the AlgorithmIdentifier is passed to the 11874 underlying key generation function so it must do its own ASN1 parsing. 11875 This has also changed the EVP_PBE_CipherInit() function which now has a 11876 'parameter' argument instead of literal salt and iteration count values 11877 and the function EVP_PBE_ALGOR_CipherInit() has been deleted. 11878 [Steve Henson] 11879 11880 *) Support for PKCS#5 v1.5 compatible password based encryption algorithms 11881 and PKCS#8 functionality. New 'pkcs8' application linked to openssl. 11882 Needed to change the PEM_STRING_EVP_PKEY value which was just "PRIVATE 11883 KEY" because this clashed with PKCS#8 unencrypted string. Since this 11884 value was just used as a "magic string" and not used directly its 11885 value doesn't matter. 11886 [Steve Henson] 11887 11888 *) Introduce some semblance of const correctness to BN. Shame C doesn't 11889 support mutable. 11890 [Ben Laurie] 11891 11892 *) "linux-sparc64" configuration (ultrapenguin). 11893 [Ray Miller <ray.miller@oucs.ox.ac.uk>] 11894 "linux-sparc" configuration. 11895 [Christian Forster <fo@hawo.stw.uni-erlangen.de>] 11896 11897 *) config now generates no-xxx options for missing ciphers. 11898 [Ulf Möller] 11899 11900 *) Support the EBCDIC character set (work in progress). 11901 File ebcdic.c not yet included because it has a different license. 11902 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 11903 11904 *) Support BS2000/OSD-POSIX. 11905 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>] 11906 11907 *) Make callbacks for key generation use void * instead of char *. 11908 [Ben Laurie] 11909 11910 *) Make S/MIME samples compile (not yet tested). 11911 [Ben Laurie] 11912 11913 *) Additional typesafe stacks. 11914 [Ben Laurie] 11915 11916 *) New configuration variants "bsdi-elf-gcc" (BSD/OS 4.x). 11917 [Bodo Moeller] 11918 11919 11920 Changes between 0.9.3 and 0.9.3a [29 May 1999] 11921 11922 *) New configuration variant "sco5-gcc". 11923 11924 *) Updated some demos. 11925 [Sean O Riordain, Wade Scholine] 11926 11927 *) Add missing BIO_free at exit of pkcs12 application. 11928 [Wu Zhigang] 11929 11930 *) Fix memory leak in conf.c. 11931 [Steve Henson] 11932 11933 *) Updates for Win32 to assembler version of MD5. 11934 [Steve Henson] 11935 11936 *) Set #! path to perl in apps/der_chop to where we found it 11937 instead of using a fixed path. 11938 [Bodo Moeller] 11939 11940 *) SHA library changes for irix64-mips4-cc. 11941 [Andy Polyakov] 11942 11943 *) Improvements for VMS support. 11944 [Richard Levitte] 11945 11946 11947 Changes between 0.9.2b and 0.9.3 [24 May 1999] 11948 11949 *) Bignum library bug fix. IRIX 6 passes "make test" now! 11950 This also avoids the problems with SC4.2 and unpatched SC5. 11951 [Andy Polyakov <appro@fy.chalmers.se>] 11952 11953 *) New functions sk_num, sk_value and sk_set to replace the previous macros. 11954 These are required because of the typesafe stack would otherwise break 11955 existing code. If old code used a structure member which used to be STACK 11956 and is now STACK_OF (for example cert in a PKCS7_SIGNED structure) with 11957 sk_num or sk_value it would produce an error because the num, data members 11958 are not present in STACK_OF. Now it just produces a warning. sk_set 11959 replaces the old method of assigning a value to sk_value 11960 (e.g. sk_value(x, i) = y) which the library used in a few cases. Any code 11961 that does this will no longer work (and should use sk_set instead) but 11962 this could be regarded as a "questionable" behaviour anyway. 11963 [Steve Henson] 11964 11965 *) Fix most of the other PKCS#7 bugs. The "experimental" code can now 11966 correctly handle encrypted S/MIME data. 11967 [Steve Henson] 11968 11969 *) Change type of various DES function arguments from des_cblock 11970 (which means, in function argument declarations, pointer to char) 11971 to des_cblock * (meaning pointer to array with 8 char elements), 11972 which allows the compiler to do more typechecking; it was like 11973 that back in SSLeay, but with lots of ugly casts. 11974 11975 Introduce new type const_des_cblock. 11976 [Bodo Moeller] 11977 11978 *) Reorganise the PKCS#7 library and get rid of some of the more obvious 11979 problems: find RecipientInfo structure that matches recipient certificate 11980 and initialise the ASN1 structures properly based on passed cipher. 11981 [Steve Henson] 11982 11983 *) Belatedly make the BN tests actually check the results. 11984 [Ben Laurie] 11985 11986 *) Fix the encoding and decoding of negative ASN1 INTEGERS and conversion 11987 to and from BNs: it was completely broken. New compilation option 11988 NEG_PUBKEY_BUG to allow for some broken certificates that encode public 11989 key elements as negative integers. 11990 [Steve Henson] 11991 11992 *) Reorganize and speed up MD5. 11993 [Andy Polyakov <appro@fy.chalmers.se>] 11994 11995 *) VMS support. 11996 [Richard Levitte <richard@levitte.org>] 11997 11998 *) New option -out to asn1parse to allow the parsed structure to be 11999 output to a file. This is most useful when combined with the -strparse 12000 option to examine the output of things like OCTET STRINGS. 12001 [Steve Henson] 12002 12003 *) Make SSL library a little more fool-proof by not requiring any longer 12004 that SSL_set_{accept,connect}_state be called before 12005 SSL_{accept,connect} may be used (SSL_set_..._state is omitted 12006 in many applications because usually everything *appeared* to work as 12007 intended anyway -- now it really works as intended). 12008 [Bodo Moeller] 12009 12010 *) Move openssl.cnf out of lib/. 12011 [Ulf Möller] 12012 12013 *) Fix various things to let OpenSSL even pass ``egcc -pipe -O2 -Wall 12014 -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes 12015 -Wmissing-declarations -Wnested-externs -Winline'' with EGCS 1.1.2+ 12016 [Ralf S. Engelschall] 12017 12018 *) Various fixes to the EVP and PKCS#7 code. It may now be able to 12019 handle PKCS#7 enveloped data properly. 12020 [Sebastian Akerman <sak@parallelconsulting.com>, modified by Steve] 12021 12022 *) Create a duplicate of the SSL_CTX's CERT in SSL_new instead of 12023 copying pointers. The cert_st handling is changed by this in 12024 various ways (and thus what used to be known as ctx->default_cert 12025 is now called ctx->cert, since we don't resort to s->ctx->[default_]cert 12026 any longer when s->cert does not give us what we need). 12027 ssl_cert_instantiate becomes obsolete by this change. 12028 As soon as we've got the new code right (possibly it already is?), 12029 we have solved a couple of bugs of the earlier code where s->cert 12030 was used as if it could not have been shared with other SSL structures. 12031 12032 Note that using the SSL API in certain dirty ways now will result 12033 in different behaviour than observed with earlier library versions: 12034 Changing settings for an SSL_CTX *ctx after having done s = SSL_new(ctx) 12035 does not influence s as it used to. 12036 12037 In order to clean up things more thoroughly, inside SSL_SESSION 12038 we don't use CERT any longer, but a new structure SESS_CERT 12039 that holds per-session data (if available); currently, this is 12040 the peer's certificate chain and, for clients, the server's certificate 12041 and temporary key. CERT holds only those values that can have 12042 meaningful defaults in an SSL_CTX. 12043 [Bodo Moeller] 12044 12045 *) New function X509V3_EXT_i2d() to create an X509_EXTENSION structure 12046 from the internal representation. Various PKCS#7 fixes: remove some 12047 evil casts and set the enc_dig_alg field properly based on the signing 12048 key type. 12049 [Steve Henson] 12050 12051 *) Allow PKCS#12 password to be set from the command line or the 12052 environment. Let 'ca' get its config file name from the environment 12053 variables "OPENSSL_CONF" or "SSLEAY_CONF" (for consistency with 'req' 12054 and 'x509'). 12055 [Steve Henson] 12056 12057 *) Allow certificate policies extension to use an IA5STRING for the 12058 organization field. This is contrary to the PKIX definition but 12059 VeriSign uses it and IE5 only recognises this form. Document 'x509' 12060 extension option. 12061 [Steve Henson] 12062 12063 *) Add PEDANTIC compiler flag to allow compilation with gcc -pedantic, 12064 without disallowing inline assembler and the like for non-pedantic builds. 12065 [Ben Laurie] 12066 12067 *) Support Borland C++ builder. 12068 [Janez Jere <jj@void.si>, modified by Ulf Möller] 12069 12070 *) Support Mingw32. 12071 [Ulf Möller] 12072 12073 *) SHA-1 cleanups and performance enhancements. 12074 [Andy Polyakov <appro@fy.chalmers.se>] 12075 12076 *) Sparc v8plus assembler for the bignum library. 12077 [Andy Polyakov <appro@fy.chalmers.se>] 12078 12079 *) Accept any -xxx and +xxx compiler options in Configure. 12080 [Ulf Möller] 12081 12082 *) Update HPUX configuration. 12083 [Anonymous] 12084 12085 *) Add missing sk_<type>_unshift() function to safestack.h 12086 [Ralf S. Engelschall] 12087 12088 *) New function SSL_CTX_use_certificate_chain_file that sets the 12089 "extra_cert"s in addition to the certificate. (This makes sense 12090 only for "PEM" format files, as chains as a whole are not 12091 DER-encoded.) 12092 [Bodo Moeller] 12093 12094 *) Support verify_depth from the SSL API. 12095 x509_vfy.c had what can be considered an off-by-one-error: 12096 Its depth (which was not part of the external interface) 12097 was actually counting the number of certificates in a chain; 12098 now it really counts the depth. 12099 [Bodo Moeller] 12100 12101 *) Bugfix in crypto/x509/x509_cmp.c: The SSLerr macro was used 12102 instead of X509err, which often resulted in confusing error 12103 messages since the error codes are not globally unique 12104 (e.g. an alleged error in ssl3_accept when a certificate 12105 didn't match the private key). 12106 12107 *) New function SSL_CTX_set_session_id_context that allows to set a default 12108 value (so that you don't need SSL_set_session_id_context for each 12109 connection using the SSL_CTX). 12110 [Bodo Moeller] 12111 12112 *) OAEP decoding bug fix. 12113 [Ulf Möller] 12114 12115 *) Support INSTALL_PREFIX for package builders, as proposed by 12116 David Harris. 12117 [Bodo Moeller] 12118 12119 *) New Configure options "threads" and "no-threads". For systems 12120 where the proper compiler options are known (currently Solaris 12121 and Linux), "threads" is the default. 12122 [Bodo Moeller] 12123 12124 *) New script util/mklink.pl as a faster substitute for util/mklink.sh. 12125 [Bodo Moeller] 12126 12127 *) Install various scripts to $(OPENSSLDIR)/misc, not to 12128 $(INSTALLTOP)/bin -- they shouldn't clutter directories 12129 such as /usr/local/bin. 12130 [Bodo Moeller] 12131 12132 *) "make linux-shared" to build shared libraries. 12133 [Niels Poppe <niels@netbox.org>] 12134 12135 *) New Configure option no-<cipher> (rsa, idea, rc5, ...). 12136 [Ulf Möller] 12137 12138 *) Add the PKCS#12 API documentation to openssl.txt. Preliminary support for 12139 extension adding in x509 utility. 12140 [Steve Henson] 12141 12142 *) Remove NOPROTO sections and error code comments. 12143 [Ulf Möller] 12144 12145 *) Partial rewrite of the DEF file generator to now parse the ANSI 12146 prototypes. 12147 [Steve Henson] 12148 12149 *) New Configure options --prefix=DIR and --openssldir=DIR. 12150 [Ulf Möller] 12151 12152 *) Complete rewrite of the error code script(s). It is all now handled 12153 by one script at the top level which handles error code gathering, 12154 header rewriting and C source file generation. It should be much better 12155 than the old method: it now uses a modified version of Ulf's parser to 12156 read the ANSI prototypes in all header files (thus the old K&R definitions 12157 aren't needed for error creation any more) and do a better job of 12158 translating function codes into names. The old 'ASN1 error code imbedded 12159 in a comment' is no longer necessary and it doesn't use .err files which 12160 have now been deleted. Also the error code call doesn't have to appear all 12161 on one line (which resulted in some large lines...). 12162 [Steve Henson] 12163 12164 *) Change #include filenames from <foo.h> to <openssl/foo.h>. 12165 [Bodo Moeller] 12166 12167 *) Change behaviour of ssl2_read when facing length-0 packets: Don't return 12168 0 (which usually indicates a closed connection), but continue reading. 12169 [Bodo Moeller] 12170 12171 *) Fix some race conditions. 12172 [Bodo Moeller] 12173 12174 *) Add support for CRL distribution points extension. Add Certificate 12175 Policies and CRL distribution points documentation. 12176 [Steve Henson] 12177 12178 *) Move the autogenerated header file parts to crypto/opensslconf.h. 12179 [Ulf Möller] 12180 12181 *) Fix new 56-bit DES export ciphersuites: they were using 7 bytes instead of 12182 8 of keying material. Merlin has also confirmed interop with this fix 12183 between OpenSSL and Baltimore C/SSL 2.0 and J/SSL 2.0. 12184 [Merlin Hughes <merlin@baltimore.ie>] 12185 12186 *) Fix lots of warnings. 12187 [Richard Levitte <levitte@stacken.kth.se>] 12188 12189 *) In add_cert_dir() in crypto/x509/by_dir.c, break out of the loop if 12190 the directory spec didn't end with a LIST_SEPARATOR_CHAR. 12191 [Richard Levitte <levitte@stacken.kth.se>] 12192 12193 *) Fix problems with sizeof(long) == 8. 12194 [Andy Polyakov <appro@fy.chalmers.se>] 12195 12196 *) Change functions to ANSI C. 12197 [Ulf Möller] 12198 12199 *) Fix typos in error codes. 12200 [Martin Kraemer <Martin.Kraemer@MchP.Siemens.De>, Ulf Möller] 12201 12202 *) Remove defunct assembler files from Configure. 12203 [Ulf Möller] 12204 12205 *) SPARC v8 assembler BIGNUM implementation. 12206 [Andy Polyakov <appro@fy.chalmers.se>] 12207 12208 *) Support for Certificate Policies extension: both print and set. 12209 Various additions to support the r2i method this uses. 12210 [Steve Henson] 12211 12212 *) A lot of constification, and fix a bug in X509_NAME_oneline() that could 12213 return a const string when you are expecting an allocated buffer. 12214 [Ben Laurie] 12215 12216 *) Add support for ASN1 types UTF8String and VISIBLESTRING, also the CHOICE 12217 types DirectoryString and DisplayText. 12218 [Steve Henson] 12219 12220 *) Add code to allow r2i extensions to access the configuration database, 12221 add an LHASH database driver and add several ctx helper functions. 12222 [Steve Henson] 12223 12224 *) Fix an evil bug in bn_expand2() which caused various BN functions to 12225 fail when they extended the size of a BIGNUM. 12226 [Steve Henson] 12227 12228 *) Various utility functions to handle SXNet extension. Modify mkdef.pl to 12229 support typesafe stack. 12230 [Steve Henson] 12231 12232 *) Fix typo in SSL_[gs]et_options(). 12233 [Nils Frostberg <nils@medcom.se>] 12234 12235 *) Delete various functions and files that belonged to the (now obsolete) 12236 old X509V3 handling code. 12237 [Steve Henson] 12238 12239 *) New Configure option "rsaref". 12240 [Ulf Möller] 12241 12242 *) Don't auto-generate pem.h. 12243 [Bodo Moeller] 12244 12245 *) Introduce type-safe ASN.1 SETs. 12246 [Ben Laurie] 12247 12248 *) Convert various additional casted stacks to type-safe STACK_OF() variants. 12249 [Ben Laurie, Ralf S. Engelschall, Steve Henson] 12250 12251 *) Introduce type-safe STACKs. This will almost certainly break lots of code 12252 that links with OpenSSL (well at least cause lots of warnings), but fear 12253 not: the conversion is trivial, and it eliminates loads of evil casts. A 12254 few STACKed things have been converted already. Feel free to convert more. 12255 In the fullness of time, I'll do away with the STACK type altogether. 12256 [Ben Laurie] 12257 12258 *) Add `openssl ca -revoke <certfile>' facility which revokes a certificate 12259 specified in <certfile> by updating the entry in the index.txt file. 12260 This way one no longer has to edit the index.txt file manually for 12261 revoking a certificate. The -revoke option does the gory details now. 12262 [Massimiliano Pala <madwolf@openca.org>, Ralf S. Engelschall] 12263 12264 *) Fix `openssl crl -noout -text' combination where `-noout' killed the 12265 `-text' option at all and this way the `-noout -text' combination was 12266 inconsistent in `openssl crl' with the friends in `openssl x509|rsa|dsa'. 12267 [Ralf S. Engelschall] 12268 12269 *) Make sure a corresponding plain text error message exists for the 12270 X509_V_ERR_CERT_REVOKED/23 error number which can occur when a 12271 verify callback function determined that a certificate was revoked. 12272 [Ralf S. Engelschall] 12273 12274 *) Bugfix: In test/testenc, don't test "openssl <cipher>" for 12275 ciphers that were excluded, e.g. by -DNO_IDEA. Also, test 12276 all available ciphers including rc5, which was forgotten until now. 12277 In order to let the testing shell script know which algorithms 12278 are available, a new (up to now undocumented) command 12279 "openssl list-cipher-commands" is used. 12280 [Bodo Moeller] 12281 12282 *) Bugfix: s_client occasionally would sleep in select() when 12283 it should have checked SSL_pending() first. 12284 [Bodo Moeller] 12285 12286 *) New functions DSA_do_sign and DSA_do_verify to provide access to 12287 the raw DSA values prior to ASN.1 encoding. 12288 [Ulf Möller] 12289 12290 *) Tweaks to Configure 12291 [Niels Poppe <niels@netbox.org>] 12292 12293 *) Add support for PKCS#5 v2.0 ASN1 PBES2 structures. No other support, 12294 yet... 12295 [Steve Henson] 12296 12297 *) New variables $(RANLIB) and $(PERL) in the Makefiles. 12298 [Ulf Möller] 12299 12300 *) New config option to avoid instructions that are illegal on the 80386. 12301 The default code is faster, but requires at least a 486. 12302 [Ulf Möller] 12303 12304 *) Got rid of old SSL2_CLIENT_VERSION (inconsistently used) and 12305 SSL2_SERVER_VERSION (not used at all) macros, which are now the 12306 same as SSL2_VERSION anyway. 12307 [Bodo Moeller] 12308 12309 *) New "-showcerts" option for s_client. 12310 [Bodo Moeller] 12311 12312 *) Still more PKCS#12 integration. Add pkcs12 application to openssl 12313 application. Various cleanups and fixes. 12314 [Steve Henson] 12315 12316 *) More PKCS#12 integration. Add new pkcs12 directory with Makefile.ssl and 12317 modify error routines to work internally. Add error codes and PBE init 12318 to library startup routines. 12319 [Steve Henson] 12320 12321 *) Further PKCS#12 integration. Added password based encryption, PKCS#8 and 12322 packing functions to asn1 and evp. Changed function names and error 12323 codes along the way. 12324 [Steve Henson] 12325 12326 *) PKCS12 integration: and so it begins... First of several patches to 12327 slowly integrate PKCS#12 functionality into OpenSSL. Add PKCS#12 12328 objects to objects.h 12329 [Steve Henson] 12330 12331 *) Add a new 'indent' option to some X509V3 extension code. Initial ASN1 12332 and display support for Thawte strong extranet extension. 12333 [Steve Henson] 12334 12335 *) Add LinuxPPC support. 12336 [Jeff Dubrule <igor@pobox.org>] 12337 12338 *) Get rid of redundant BN file bn_mulw.c, and rename bn_div64 to 12339 bn_div_words in alpha.s. 12340 [Hannes Reinecke <H.Reinecke@hw.ac.uk> and Ben Laurie] 12341 12342 *) Make sure the RSA OAEP test is skipped under -DRSAref because 12343 OAEP isn't supported when OpenSSL is built with RSAref. 12344 [Ulf Moeller <ulf@fitug.de>] 12345 12346 *) Move definitions of IS_SET/IS_SEQUENCE inside crypto/asn1/asn1.h 12347 so they no longer are missing under -DNOPROTO. 12348 [Soren S. Jorvang <soren@t.dk>] 12349 12350 12351 Changes between 0.9.1c and 0.9.2b [22 Mar 1999] 12352 12353 *) Make SSL_get_peer_cert_chain() work in servers. Unfortunately, it still 12354 doesn't work when the session is reused. Coming soon! 12355 [Ben Laurie] 12356 12357 *) Fix a security hole, that allows sessions to be reused in the wrong 12358 context thus bypassing client cert protection! All software that uses 12359 client certs and session caches in multiple contexts NEEDS PATCHING to 12360 allow session reuse! A fuller solution is in the works. 12361 [Ben Laurie, problem pointed out by Holger Reif, Bodo Moeller (and ???)] 12362 12363 *) Some more source tree cleanups (removed obsolete files 12364 crypto/bf/asm/bf586.pl, test/test.txt and crypto/sha/asm/f.s; changed 12365 permission on "config" script to be executable) and a fix for the INSTALL 12366 document. 12367 [Ulf Moeller <ulf@fitug.de>] 12368 12369 *) Remove some legacy and erroneous uses of malloc, free instead of 12370 Malloc, Free. 12371 [Lennart Bang <lob@netstream.se>, with minor changes by Steve] 12372 12373 *) Make rsa_oaep_test return non-zero on error. 12374 [Ulf Moeller <ulf@fitug.de>] 12375 12376 *) Add support for native Solaris shared libraries. Configure 12377 solaris-sparc-sc4-pic, make, then run shlib/solaris-sc4.sh. It'd be nice 12378 if someone would make that last step automatic. 12379 [Matthias Loepfe <Matthias.Loepfe@AdNovum.CH>] 12380 12381 *) ctx_size was not built with the right compiler during "make links". Fixed. 12382 [Ben Laurie] 12383 12384 *) Change the meaning of 'ALL' in the cipher list. It now means "everything 12385 except NULL ciphers". This means the default cipher list will no longer 12386 enable NULL ciphers. They need to be specifically enabled e.g. with 12387 the string "DEFAULT:eNULL". 12388 [Steve Henson] 12389 12390 *) Fix to RSA private encryption routines: if p < q then it would 12391 occasionally produce an invalid result. This will only happen with 12392 externally generated keys because OpenSSL (and SSLeay) ensure p > q. 12393 [Steve Henson] 12394 12395 *) Be less restrictive and allow also `perl util/perlpath.pl 12396 /path/to/bin/perl' in addition to `perl util/perlpath.pl /path/to/bin', 12397 because this way one can also use an interpreter named `perl5' (which is 12398 usually the name of Perl 5.xxx on platforms where an Perl 4.x is still 12399 installed as `perl'). 12400 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 12401 12402 *) Let util/clean-depend.pl work also with older Perl 5.00x versions. 12403 [Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 12404 12405 *) Fix Makefile.org so CC,CFLAG etc are passed to 'make links' add 12406 advapi32.lib to Win32 build and change the pem test comparison 12407 to fc.exe (thanks to Ulrich Kroener <kroneru@yahoo.com> for the 12408 suggestion). Fix misplaced ASNI prototypes and declarations in evp.h 12409 and crypto/des/ede_cbcm_enc.c. 12410 [Steve Henson] 12411 12412 *) DES quad checksum was broken on big-endian architectures. Fixed. 12413 [Ben Laurie] 12414 12415 *) Comment out two functions in bio.h that aren't implemented. Fix up the 12416 Win32 test batch file so it (might) work again. The Win32 test batch file 12417 is horrible: I feel ill.... 12418 [Steve Henson] 12419 12420 *) Move various #ifdefs around so NO_SYSLOG, NO_DIRENT etc are now selected 12421 in e_os.h. Audit of header files to check ANSI and non ANSI 12422 sections: 10 functions were absent from non ANSI section and not exported 12423 from Windows DLLs. Fixed up libeay.num for new functions. 12424 [Steve Henson] 12425 12426 *) Make `openssl version' output lines consistent. 12427 [Ralf S. Engelschall] 12428 12429 *) Fix Win32 symbol export lists for BIO functions: Added 12430 BIO_get_ex_new_index, BIO_get_ex_num, BIO_get_ex_data and BIO_set_ex_data 12431 to ms/libeay{16,32}.def. 12432 [Ralf S. Engelschall] 12433 12434 *) Second round of fixing the OpenSSL perl/ stuff. It now at least compiled 12435 fine under Unix and passes some trivial tests I've now added. But the 12436 whole stuff is horribly incomplete, so a README.1ST with a disclaimer was 12437 added to make sure no one expects that this stuff really works in the 12438 OpenSSL 0.9.2 release. Additionally I've started to clean the XS sources 12439 up and fixed a few little bugs and inconsistencies in OpenSSL.{pm,xs} and 12440 openssl_bio.xs. 12441 [Ralf S. Engelschall] 12442 12443 *) Fix the generation of two part addresses in perl. 12444 [Kenji Miyake <kenji@miyake.org>, integrated by Ben Laurie] 12445 12446 *) Add config entry for Linux on MIPS. 12447 [John Tobey <jtobey@channel1.com>] 12448 12449 *) Make links whenever Configure is run, unless we are on Windoze. 12450 [Ben Laurie] 12451 12452 *) Permit extensions to be added to CRLs using crl_section in openssl.cnf. 12453 Currently only issuerAltName and AuthorityKeyIdentifier make any sense 12454 in CRLs. 12455 [Steve Henson] 12456 12457 *) Add a useful kludge to allow package maintainers to specify compiler and 12458 other platforms details on the command line without having to patch the 12459 Configure script everytime: One now can use ``perl Configure 12460 <id>:<details>'', i.e. platform ids are allowed to have details appended 12461 to them (separated by colons). This is treated as there would be a static 12462 pre-configured entry in Configure's %table under key <id> with value 12463 <details> and ``perl Configure <id>'' is called. So, when you want to 12464 perform a quick test-compile under FreeBSD 3.1 with pgcc and without 12465 assembler stuff you can use ``perl Configure "FreeBSD-elf:pgcc:-O6:::"'' 12466 now, which overrides the FreeBSD-elf entry on-the-fly. 12467 [Ralf S. Engelschall] 12468 12469 *) Disable new TLS1 ciphersuites by default: they aren't official yet. 12470 [Ben Laurie] 12471 12472 *) Allow DSO flags like -fpic, -fPIC, -KPIC etc. to be specified 12473 on the `perl Configure ...' command line. This way one can compile 12474 OpenSSL libraries with Position Independent Code (PIC) which is needed 12475 for linking it into DSOs. 12476 [Ralf S. Engelschall] 12477 12478 *) Remarkably, export ciphers were totally broken and no-one had noticed! 12479 Fixed. 12480 [Ben Laurie] 12481 12482 *) Cleaned up the LICENSE document: The official contact for any license 12483 questions now is the OpenSSL core team under openssl-core@openssl.org. 12484 And add a paragraph about the dual-license situation to make sure people 12485 recognize that _BOTH_ the OpenSSL license _AND_ the SSLeay license apply 12486 to the OpenSSL toolkit. 12487 [Ralf S. Engelschall] 12488 12489 *) General source tree makefile cleanups: Made `making xxx in yyy...' 12490 display consistent in the source tree and replaced `/bin/rm' by `rm'. 12491 Additionally cleaned up the `make links' target: Remove unnecessary 12492 semicolons, subsequent redundant removes, inline point.sh into mklink.sh 12493 to speed processing and no longer clutter the display with confusing 12494 stuff. Instead only the actually done links are displayed. 12495 [Ralf S. Engelschall] 12496 12497 *) Permit null encryption ciphersuites, used for authentication only. It used 12498 to be necessary to set the preprocessor define SSL_ALLOW_ENULL to do this. 12499 It is now necessary to set SSL_FORBID_ENULL to prevent the use of null 12500 encryption. 12501 [Ben Laurie] 12502 12503 *) Add a bunch of fixes to the PKCS#7 stuff. It used to sometimes reorder 12504 signed attributes when verifying signatures (this would break them), 12505 the detached data encoding was wrong and public keys obtained using 12506 X509_get_pubkey() weren't freed. 12507 [Steve Henson] 12508 12509 *) Add text documentation for the BUFFER functions. Also added a work around 12510 to a Win95 console bug. This was triggered by the password read stuff: the 12511 last character typed gets carried over to the next fread(). If you were 12512 generating a new cert request using 'req' for example then the last 12513 character of the passphrase would be CR which would then enter the first 12514 field as blank. 12515 [Steve Henson] 12516 12517 *) Added the new `Includes OpenSSL Cryptography Software' button as 12518 doc/openssl_button.{gif,html} which is similar in style to the old SSLeay 12519 button and can be used by applications based on OpenSSL to show the 12520 relationship to the OpenSSL project. 12521 [Ralf S. Engelschall] 12522 12523 *) Remove confusing variables in function signatures in files 12524 ssl/ssl_lib.c and ssl/ssl.h. 12525 [Lennart Bong <lob@kulthea.stacken.kth.se>] 12526 12527 *) Don't install bss_file.c under PREFIX/include/ 12528 [Lennart Bong <lob@kulthea.stacken.kth.se>] 12529 12530 *) Get the Win32 compile working again. Modify mkdef.pl so it can handle 12531 functions that return function pointers and has support for NT specific 12532 stuff. Fix mk1mf.pl and VC-32.pl to support NT differences also. Various 12533 #ifdef WIN32 and WINNTs sprinkled about the place and some changes from 12534 unsigned to signed types: this was killing the Win32 compile. 12535 [Steve Henson] 12536 12537 *) Add new certificate file to stack functions, 12538 SSL_add_dir_cert_subjects_to_stack() and 12539 SSL_add_file_cert_subjects_to_stack(). These largely supplant 12540 SSL_load_client_CA_file(), and can be used to add multiple certs easily 12541 to a stack (usually this is then handed to SSL_CTX_set_client_CA_list()). 12542 This means that Apache-SSL and similar packages don't have to mess around 12543 to add as many CAs as they want to the preferred list. 12544 [Ben Laurie] 12545 12546 *) Experiment with doxygen documentation. Currently only partially applied to 12547 ssl/ssl_lib.c. 12548 See http://www.stack.nl/~dimitri/doxygen/index.html, and run doxygen with 12549 openssl.doxy as the configuration file. 12550 [Ben Laurie] 12551 12552 *) Get rid of remaining C++-style comments which strict C compilers hate. 12553 [Ralf S. Engelschall, pointed out by Carlos Amengual] 12554 12555 *) Changed BN_RECURSION in bn_mont.c to BN_RECURSION_MONT so it is not 12556 compiled in by default: it has problems with large keys. 12557 [Steve Henson] 12558 12559 *) Add a bunch of SSL_xxx() functions for configuring the temporary RSA and 12560 DH private keys and/or callback functions which directly correspond to 12561 their SSL_CTX_xxx() counterparts but work on a per-connection basis. This 12562 is needed for applications which have to configure certificates on a 12563 per-connection basis (e.g. Apache+mod_ssl) instead of a per-context basis 12564 (e.g. s_server). 12565 For the RSA certificate situation is makes no difference, but 12566 for the DSA certificate situation this fixes the "no shared cipher" 12567 problem where the OpenSSL cipher selection procedure failed because the 12568 temporary keys were not overtaken from the context and the API provided 12569 no way to reconfigure them. 12570 The new functions now let applications reconfigure the stuff and they 12571 are in detail: SSL_need_tmp_RSA, SSL_set_tmp_rsa, SSL_set_tmp_dh, 12572 SSL_set_tmp_rsa_callback and SSL_set_tmp_dh_callback. Additionally a new 12573 non-public-API function ssl_cert_instantiate() is used as a helper 12574 function and also to reduce code redundancy inside ssl_rsa.c. 12575 [Ralf S. Engelschall] 12576 12577 *) Move s_server -dcert and -dkey options out of the undocumented feature 12578 area because they are useful for the DSA situation and should be 12579 recognized by the users. 12580 [Ralf S. Engelschall] 12581 12582 *) Fix the cipher decision scheme for export ciphers: the export bits are 12583 *not* within SSL_MKEY_MASK or SSL_AUTH_MASK, they are within 12584 SSL_EXP_MASK. So, the original variable has to be used instead of the 12585 already masked variable. 12586 [Richard Levitte <levitte@stacken.kth.se>] 12587 12588 *) Fix 'port' variable from `int' to `unsigned int' in crypto/bio/b_sock.c 12589 [Richard Levitte <levitte@stacken.kth.se>] 12590 12591 *) Change type of another md_len variable in pk7_doit.c:PKCS7_dataFinal() 12592 from `int' to `unsigned int' because it's a length and initialized by 12593 EVP_DigestFinal() which expects an `unsigned int *'. 12594 [Richard Levitte <levitte@stacken.kth.se>] 12595 12596 *) Don't hard-code path to Perl interpreter on shebang line of Configure 12597 script. Instead use the usual Shell->Perl transition trick. 12598 [Ralf S. Engelschall] 12599 12600 *) Make `openssl x509 -noout -modulus' functional also for DSA certificates 12601 (in addition to RSA certificates) to match the behaviour of `openssl dsa 12602 -noout -modulus' as it's already the case for `openssl rsa -noout 12603 -modulus'. For RSA the -modulus is the real "modulus" while for DSA 12604 currently the public key is printed (a decision which was already done by 12605 `openssl dsa -modulus' in the past) which serves a similar purpose. 12606 Additionally the NO_RSA no longer completely removes the whole -modulus 12607 option; it now only avoids using the RSA stuff. Same applies to NO_DSA 12608 now, too. 12609 [Ralf S. Engelschall] 12610 12611 *) Add Arne Ansper's reliable BIO - this is an encrypted, block-digested 12612 BIO. See the source (crypto/evp/bio_ok.c) for more info. 12613 [Arne Ansper <arne@ats.cyber.ee>] 12614 12615 *) Dump the old yucky req code that tried (and failed) to allow raw OIDs 12616 to be added. Now both 'req' and 'ca' can use new objects defined in the 12617 config file. 12618 [Steve Henson] 12619 12620 *) Add cool BIO that does syslog (or event log on NT). 12621 [Arne Ansper <arne@ats.cyber.ee>, integrated by Ben Laurie] 12622 12623 *) Add support for new TLS ciphersuites, TLS_RSA_EXPORT56_WITH_RC4_56_MD5, 12624 TLS_RSA_EXPORT56_WITH_RC2_CBC_56_MD5 and 12625 TLS_RSA_EXPORT56_WITH_DES_CBC_SHA, as specified in "56-bit Export Cipher 12626 Suites For TLS", draft-ietf-tls-56-bit-ciphersuites-00.txt. 12627 [Ben Laurie] 12628 12629 *) Add preliminary config info for new extension code. 12630 [Steve Henson] 12631 12632 *) Make RSA_NO_PADDING really use no padding. 12633 [Ulf Moeller <ulf@fitug.de>] 12634 12635 *) Generate errors when private/public key check is done. 12636 [Ben Laurie] 12637 12638 *) Overhaul for 'crl' utility. New function X509_CRL_print. Partial support 12639 for some CRL extensions and new objects added. 12640 [Steve Henson] 12641 12642 *) Really fix the ASN1 IMPLICIT bug this time... Partial support for private 12643 key usage extension and fuller support for authority key id. 12644 [Steve Henson] 12645 12646 *) Add OAEP encryption for the OpenSSL crypto library. OAEP is the improved 12647 padding method for RSA, which is recommended for new applications in PKCS 12648 #1 v2.0 (RFC 2437, October 1998). 12649 OAEP (Optimal Asymmetric Encryption Padding) has better theoretical 12650 foundations than the ad-hoc padding used in PKCS #1 v1.5. It is secure 12651 against Bleichbacher's attack on RSA. 12652 [Ulf Moeller <ulf@fitug.de>, reformatted, corrected and integrated by 12653 Ben Laurie] 12654 12655 *) Updates to the new SSL compression code 12656 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 12657 12658 *) Fix so that the version number in the master secret, when passed 12659 via RSA, checks that if TLS was proposed, but we roll back to SSLv3 12660 (because the server will not accept higher), that the version number 12661 is 0x03,0x01, not 0x03,0x00 12662 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 12663 12664 *) Run extensive memory leak checks on SSL apps. Fixed *lots* of memory 12665 leaks in ssl/ relating to new X509_get_pubkey() behaviour. Also fixes 12666 in apps/ and an unrelated leak in crypto/dsa/dsa_vrf.c 12667 [Steve Henson] 12668 12669 *) Support for RAW extensions where an arbitrary extension can be 12670 created by including its DER encoding. See apps/openssl.cnf for 12671 an example. 12672 [Steve Henson] 12673 12674 *) Make sure latest Perl versions don't interpret some generated C array 12675 code as Perl array code in the crypto/err/err_genc.pl script. 12676 [Lars Weber <3weber@informatik.uni-hamburg.de>] 12677 12678 *) Modify ms/do_ms.bat to not generate assembly language makefiles since 12679 not many people have the assembler. Various Win32 compilation fixes and 12680 update to the INSTALL.W32 file with (hopefully) more accurate Win32 12681 build instructions. 12682 [Steve Henson] 12683 12684 *) Modify configure script 'Configure' to automatically create crypto/date.h 12685 file under Win32 and also build pem.h from pem.org. New script 12686 util/mkfiles.pl to create the MINFO file on environments that can't do a 12687 'make files': perl util/mkfiles.pl >MINFO should work. 12688 [Steve Henson] 12689 12690 *) Major rework of DES function declarations, in the pursuit of correctness 12691 and purity. As a result, many evil casts evaporated, and some weirdness, 12692 too. You may find this causes warnings in your code. Zapping your evil 12693 casts will probably fix them. Mostly. 12694 [Ben Laurie] 12695 12696 *) Fix for a typo in asn1.h. Bug fix to object creation script 12697 obj_dat.pl. It considered a zero in an object definition to mean 12698 "end of object": none of the objects in objects.h have any zeros 12699 so it wasn't spotted. 12700 [Steve Henson, reported by Erwann ABALEA <eabalea@certplus.com>] 12701 12702 *) Add support for Triple DES Cipher Block Chaining with Output Feedback 12703 Masking (CBCM). In the absence of test vectors, the best I have been able 12704 to do is check that the decrypt undoes the encrypt, so far. Send me test 12705 vectors if you have them. 12706 [Ben Laurie] 12707 12708 *) Correct calculation of key length for export ciphers (too much space was 12709 allocated for null ciphers). This has not been tested! 12710 [Ben Laurie] 12711 12712 *) Modifications to the mkdef.pl for Win32 DEF file creation. The usage 12713 message is now correct (it understands "crypto" and "ssl" on its 12714 command line). There is also now an "update" option. This will update 12715 the util/ssleay.num and util/libeay.num files with any new functions. 12716 If you do a: 12717 perl util/mkdef.pl crypto ssl update 12718 it will update them. 12719 [Steve Henson] 12720 12721 *) Overhauled the Perl interface (perl/*): 12722 - ported BN stuff to OpenSSL's different BN library 12723 - made the perl/ source tree CVS-aware 12724 - renamed the package from SSLeay to OpenSSL (the files still contain 12725 their history because I've copied them in the repository) 12726 - removed obsolete files (the test scripts will be replaced 12727 by better Test::Harness variants in the future) 12728 [Ralf S. Engelschall] 12729 12730 *) First cut for a very conservative source tree cleanup: 12731 1. merge various obsolete readme texts into doc/ssleay.txt 12732 where we collect the old documents and readme texts. 12733 2. remove the first part of files where I'm already sure that we no 12734 longer need them because of three reasons: either they are just temporary 12735 files which were left by Eric or they are preserved original files where 12736 I've verified that the diff is also available in the CVS via "cvs diff 12737 -rSSLeay_0_8_1b" or they were renamed (as it was definitely the case for 12738 the crypto/md/ stuff). 12739 [Ralf S. Engelschall] 12740 12741 *) More extension code. Incomplete support for subject and issuer alt 12742 name, issuer and authority key id. Change the i2v function parameters 12743 and add an extra 'crl' parameter in the X509V3_CTX structure: guess 12744 what that's for :-) Fix to ASN1 macro which messed up 12745 IMPLICIT tag and add f_enum.c which adds a2i, i2a for ENUMERATED. 12746 [Steve Henson] 12747 12748 *) Preliminary support for ENUMERATED type. This is largely copied from the 12749 INTEGER code. 12750 [Steve Henson] 12751 12752 *) Add new function, EVP_MD_CTX_copy() to replace frequent use of memcpy. 12753 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 12754 12755 *) Make sure `make rehash' target really finds the `openssl' program. 12756 [Ralf S. Engelschall, Matthias Loepfe <Matthias.Loepfe@adnovum.ch>] 12757 12758 *) Squeeze another 7% of speed out of MD5 assembler, at least on a P2. I'd 12759 like to hear about it if this slows down other processors. 12760 [Ben Laurie] 12761 12762 *) Add CygWin32 platform information to Configure script. 12763 [Alan Batie <batie@aahz.jf.intel.com>] 12764 12765 *) Fixed ms/32all.bat script: `no_asm' -> `no-asm' 12766 [Rainer W. Gerling <gerling@mpg-gv.mpg.de>] 12767 12768 *) New program nseq to manipulate netscape certificate sequences 12769 [Steve Henson] 12770 12771 *) Modify crl2pkcs7 so it supports multiple -certfile arguments. Fix a 12772 few typos. 12773 [Steve Henson] 12774 12775 *) Fixes to BN code. Previously the default was to define BN_RECURSION 12776 but the BN code had some problems that would cause failures when 12777 doing certificate verification and some other functions. 12778 [Eric A. Young, (from changes to C2Net SSLeay, integrated by Mark Cox)] 12779 12780 *) Add ASN1 and PEM code to support netscape certificate sequences. 12781 [Steve Henson] 12782 12783 *) Add ASN1 and PEM code to support netscape certificate sequences. 12784 [Steve Henson] 12785 12786 *) Add several PKIX and private extended key usage OIDs. 12787 [Steve Henson] 12788 12789 *) Modify the 'ca' program to handle the new extension code. Modify 12790 openssl.cnf for new extension format, add comments. 12791 [Steve Henson] 12792 12793 *) More X509 V3 changes. Fix typo in v3_bitstr.c. Add support to 'req' 12794 and add a sample to openssl.cnf so req -x509 now adds appropriate 12795 CA extensions. 12796 [Steve Henson] 12797 12798 *) Continued X509 V3 changes. Add to other makefiles, integrate with the 12799 error code, add initial support to X509_print() and x509 application. 12800 [Steve Henson] 12801 12802 *) Takes a deep breath and start adding X509 V3 extension support code. Add 12803 files in crypto/x509v3. Move original stuff to crypto/x509v3/old. All this 12804 stuff is currently isolated and isn't even compiled yet. 12805 [Steve Henson] 12806 12807 *) Continuing patches for GeneralizedTime. Fix up certificate and CRL 12808 ASN1 to use ASN1_TIME and modify print routines to use ASN1_TIME_print. 12809 Removed the versions check from X509 routines when loading extensions: 12810 this allows certain broken certificates that don't set the version 12811 properly to be processed. 12812 [Steve Henson] 12813 12814 *) Deal with irritating shit to do with dependencies, in YAAHW (Yet Another 12815 Ad Hoc Way) - Makefile.ssls now all contain local dependencies, which 12816 can still be regenerated with "make depend". 12817 [Ben Laurie] 12818 12819 *) Spelling mistake in C version of CAST-128. 12820 [Ben Laurie, reported by Jeremy Hylton <jeremy@cnri.reston.va.us>] 12821 12822 *) Changes to the error generation code. The perl script err-code.pl 12823 now reads in the old error codes and retains the old numbers, only 12824 adding new ones if necessary. It also only changes the .err files if new 12825 codes are added. The makefiles have been modified to only insert errors 12826 when needed (to avoid needlessly modifying header files). This is done 12827 by only inserting errors if the .err file is newer than the auto generated 12828 C file. To rebuild all the error codes from scratch (the old behaviour) 12829 either modify crypto/Makefile.ssl to pass the -regen flag to err_code.pl 12830 or delete all the .err files. 12831 [Steve Henson] 12832 12833 *) CAST-128 was incorrectly implemented for short keys. The C version has 12834 been fixed, but is untested. The assembler versions are also fixed, but 12835 new assembler HAS NOT BEEN GENERATED FOR WIN32 - the Makefile needs fixing 12836 to regenerate it if needed. 12837 [Ben Laurie, reported (with fix for C version) by Jun-ichiro itojun 12838 Hagino <itojun@kame.net>] 12839 12840 *) File was opened incorrectly in randfile.c. 12841 [Ulf Möller <ulf@fitug.de>] 12842 12843 *) Beginning of support for GeneralizedTime. d2i, i2d, check and print 12844 functions. Also ASN1_TIME suite which is a CHOICE of UTCTime or 12845 GeneralizedTime. ASN1_TIME is the proper type used in certificates et 12846 al: it's just almost always a UTCTime. Note this patch adds new error 12847 codes so do a "make errors" if there are problems. 12848 [Steve Henson] 12849 12850 *) Correct Linux 1 recognition in config. 12851 [Ulf Möller <ulf@fitug.de>] 12852 12853 *) Remove pointless MD5 hash when using DSA keys in ca. 12854 [Anonymous <nobody@replay.com>] 12855 12856 *) Generate an error if given an empty string as a cert directory. Also 12857 generate an error if handed NULL (previously returned 0 to indicate an 12858 error, but didn't set one). 12859 [Ben Laurie, reported by Anonymous <nobody@replay.com>] 12860 12861 *) Add prototypes to SSL methods. Make SSL_write's buffer const, at last. 12862 [Ben Laurie] 12863 12864 *) Fix the dummy function BN_ref_mod_exp() in rsaref.c to have the correct 12865 parameters. This was causing a warning which killed off the Win32 compile. 12866 [Steve Henson] 12867 12868 *) Remove C++ style comments from crypto/bn/bn_local.h. 12869 [Neil Costigan <neil.costigan@celocom.com>] 12870 12871 *) The function OBJ_txt2nid was broken. It was supposed to return a nid 12872 based on a text string, looking up short and long names and finally 12873 "dot" format. The "dot" format stuff didn't work. Added new function 12874 OBJ_txt2obj to do the same but return an ASN1_OBJECT and rewrote 12875 OBJ_txt2nid to use it. OBJ_txt2obj can also return objects even if the 12876 OID is not part of the table. 12877 [Steve Henson] 12878 12879 *) Add prototypes to X509 lookup/verify methods, fixing a bug in 12880 X509_LOOKUP_by_alias(). 12881 [Ben Laurie] 12882 12883 *) Sort openssl functions by name. 12884 [Ben Laurie] 12885 12886 *) Get the gendsa program working (hopefully) and add it to app list. Remove 12887 encryption from sample DSA keys (in case anyone is interested the password 12888 was "1234"). 12889 [Steve Henson] 12890 12891 *) Make _all_ *_free functions accept a NULL pointer. 12892 [Frans Heymans <fheymans@isaserver.be>] 12893 12894 *) If a DH key is generated in s3_srvr.c, don't blow it by trying to use 12895 NULL pointers. 12896 [Anonymous <nobody@replay.com>] 12897 12898 *) s_server should send the CAfile as acceptable CAs, not its own cert. 12899 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 12900 12901 *) Don't blow it for numeric -newkey arguments to apps/req. 12902 [Bodo Moeller <3moeller@informatik.uni-hamburg.de>] 12903 12904 *) Temp key "for export" tests were wrong in s3_srvr.c. 12905 [Anonymous <nobody@replay.com>] 12906 12907 *) Add prototype for temp key callback functions 12908 SSL_CTX_set_tmp_{rsa,dh}_callback(). 12909 [Ben Laurie] 12910 12911 *) Make DH_free() tolerate being passed a NULL pointer (like RSA_free() and 12912 DSA_free()). Make X509_PUBKEY_set() check for errors in d2i_PublicKey(). 12913 [Steve Henson] 12914 12915 *) X509_name_add_entry() freed the wrong thing after an error. 12916 [Arne Ansper <arne@ats.cyber.ee>] 12917 12918 *) rsa_eay.c would attempt to free a NULL context. 12919 [Arne Ansper <arne@ats.cyber.ee>] 12920 12921 *) BIO_s_socket() had a broken should_retry() on Windoze. 12922 [Arne Ansper <arne@ats.cyber.ee>] 12923 12924 *) BIO_f_buffer() didn't pass on BIO_CTRL_FLUSH. 12925 [Arne Ansper <arne@ats.cyber.ee>] 12926 12927 *) Make sure the already existing X509_STORE->depth variable is initialized 12928 in X509_STORE_new(), but document the fact that this variable is still 12929 unused in the certificate verification process. 12930 [Ralf S. Engelschall] 12931 12932 *) Fix the various library and apps files to free up pkeys obtained from 12933 X509_PUBKEY_get() et al. Also allow x509.c to handle netscape extensions. 12934 [Steve Henson] 12935 12936 *) Fix reference counting in X509_PUBKEY_get(). This makes 12937 demos/maurice/example2.c work, amongst others, probably. 12938 [Steve Henson and Ben Laurie] 12939 12940 *) First cut of a cleanup for apps/. First the `ssleay' program is now named 12941 `openssl' and second, the shortcut symlinks for the `openssl <command>' 12942 are no longer created. This way we have a single and consistent command 12943 line interface `openssl <command>', similar to `cvs <command>'. 12944 [Ralf S. Engelschall, Paul Sutton and Ben Laurie] 12945 12946 *) ca.c: move test for DSA keys inside #ifndef NO_DSA. Make pubkey 12947 BIT STRING wrapper always have zero unused bits. 12948 [Steve Henson] 12949 12950 *) Add CA.pl, perl version of CA.sh, add extended key usage OID. 12951 [Steve Henson] 12952 12953 *) Make the top-level INSTALL documentation easier to understand. 12954 [Paul Sutton] 12955 12956 *) Makefiles updated to exit if an error occurs in a sub-directory 12957 make (including if user presses ^C) [Paul Sutton] 12958 12959 *) Make Montgomery context stuff explicit in RSA data structure. 12960 [Ben Laurie] 12961 12962 *) Fix build order of pem and err to allow for generated pem.h. 12963 [Ben Laurie] 12964 12965 *) Fix renumbering bug in X509_NAME_delete_entry(). 12966 [Ben Laurie] 12967 12968 *) Enhanced the err-ins.pl script so it makes the error library number 12969 global and can add a library name. This is needed for external ASN1 and 12970 other error libraries. 12971 [Steve Henson] 12972 12973 *) Fixed sk_insert which never worked properly. 12974 [Steve Henson] 12975 12976 *) Fix ASN1 macros so they can handle indefinite length constructed 12977 EXPLICIT tags. Some non standard certificates use these: they can now 12978 be read in. 12979 [Steve Henson] 12980 12981 *) Merged the various old/obsolete SSLeay documentation files (doc/xxx.doc) 12982 into a single doc/ssleay.txt bundle. This way the information is still 12983 preserved but no longer messes up this directory. Now it's new room for 12984 the new set of documentation files. 12985 [Ralf S. Engelschall] 12986 12987 *) SETs were incorrectly DER encoded. This was a major pain, because they 12988 shared code with SEQUENCEs, which aren't coded the same. This means that 12989 almost everything to do with SETs or SEQUENCEs has either changed name or 12990 number of arguments. 12991 [Ben Laurie, based on a partial fix by GP Jayan <gp@nsj.co.jp>] 12992 12993 *) Fix test data to work with the above. 12994 [Ben Laurie] 12995 12996 *) Fix the RSA header declarations that hid a bug I fixed in 0.9.0b but 12997 was already fixed by Eric for 0.9.1 it seems. 12998 [Ben Laurie - pointed out by Ulf Möller <ulf@fitug.de>] 12999 13000 *) Autodetect FreeBSD3. 13001 [Ben Laurie] 13002 13003 *) Fix various bugs in Configure. This affects the following platforms: 13004 nextstep 13005 ncr-scde 13006 unixware-2.0 13007 unixware-2.0-pentium 13008 sco5-cc. 13009 [Ben Laurie] 13010 13011 *) Eliminate generated files from CVS. Reorder tests to regenerate files 13012 before they are needed. 13013 [Ben Laurie] 13014 13015 *) Generate Makefile.ssl from Makefile.org (to keep CVS happy). 13016 [Ben Laurie] 13017 13018 13019 Changes between 0.9.1b and 0.9.1c [23-Dec-1998] 13020 13021 *) Added OPENSSL_VERSION_NUMBER to crypto/crypto.h and 13022 changed SSLeay to OpenSSL in version strings. 13023 [Ralf S. Engelschall] 13024 13025 *) Some fixups to the top-level documents. 13026 [Paul Sutton] 13027 13028 *) Fixed the nasty bug where rsaref.h was not found under compile-time 13029 because the symlink to include/ was missing. 13030 [Ralf S. Engelschall] 13031 13032 *) Incorporated the popular no-RSA/DSA-only patches 13033 which allow to compile a RSA-free SSLeay. 13034 [Andrew Cooke / Interrader Ldt., Ralf S. Engelschall] 13035 13036 *) Fixed nasty rehash problem under `make -f Makefile.ssl links' 13037 when "ssleay" is still not found. 13038 [Ralf S. Engelschall] 13039 13040 *) Added more platforms to Configure: Cray T3E, HPUX 11, 13041 [Ralf S. Engelschall, Beckmann <beckman@acl.lanl.gov>] 13042 13043 *) Updated the README file. 13044 [Ralf S. Engelschall] 13045 13046 *) Added various .cvsignore files in the CVS repository subdirs 13047 to make a "cvs update" really silent. 13048 [Ralf S. Engelschall] 13049 13050 *) Recompiled the error-definition header files and added 13051 missing symbols to the Win32 linker tables. 13052 [Ralf S. Engelschall] 13053 13054 *) Cleaned up the top-level documents; 13055 o new files: CHANGES and LICENSE 13056 o merged VERSION, HISTORY* and README* files a CHANGES.SSLeay 13057 o merged COPYRIGHT into LICENSE 13058 o removed obsolete TODO file 13059 o renamed MICROSOFT to INSTALL.W32 13060 [Ralf S. Engelschall] 13061 13062 *) Removed dummy files from the 0.9.1b source tree: 13063 crypto/asn1/x crypto/bio/cd crypto/bio/fg crypto/bio/grep crypto/bio/vi 13064 crypto/bn/asm/......add.c crypto/bn/asm/a.out crypto/dsa/f crypto/md5/f 13065 crypto/pem/gmon.out crypto/perlasm/f crypto/pkcs7/build crypto/rsa/f 13066 crypto/sha/asm/f crypto/threads/f ms/zzz ssl/f ssl/f.mak test/f 13067 util/f.mak util/pl/f util/pl/f.mak crypto/bf/bf_locl.old apps/f 13068 [Ralf S. Engelschall] 13069 13070 *) Added various platform portability fixes. 13071 [Mark J. Cox] 13072 13073 *) The Genesis of the OpenSSL rpject: 13074 We start with the latest (unreleased) SSLeay version 0.9.1b which Eric A. 13075 Young and Tim J. Hudson created while they were working for C2Net until 13076 summer 1998. 13077 [The OpenSSL Project] 13078 13079 13080 Changes between 0.9.0b and 0.9.1b [not released] 13081 13082 *) Updated a few CA certificates under certs/ 13083 [Eric A. Young] 13084 13085 *) Changed some BIGNUM api stuff. 13086 [Eric A. Young] 13087 13088 *) Various platform ports: OpenBSD, Ultrix, IRIX 64bit, NetBSD, 13089 DGUX x86, Linux Alpha, etc. 13090 [Eric A. Young] 13091 13092 *) New COMP library [crypto/comp/] for SSL Record Layer Compression: 13093 RLE (dummy implemented) and ZLIB (really implemented when ZLIB is 13094 available). 13095 [Eric A. Young] 13096 13097 *) Add -strparse option to asn1pars program which parses nested 13098 binary structures 13099 [Dr Stephen Henson <shenson@bigfoot.com>] 13100 13101 *) Added "oid_file" to ssleay.cnf for "ca" and "req" programs. 13102 [Eric A. Young] 13103 13104 *) DSA fix for "ca" program. 13105 [Eric A. Young] 13106 13107 *) Added "-genkey" option to "dsaparam" program. 13108 [Eric A. Young] 13109 13110 *) Added RIPE MD160 (rmd160) message digest. 13111 [Eric A. Young] 13112 13113 *) Added -a (all) option to "ssleay version" command. 13114 [Eric A. Young] 13115 13116 *) Added PLATFORM define which is the id given to Configure. 13117 [Eric A. Young] 13118 13119 *) Added MemCheck_XXXX functions to crypto/mem.c for memory checking. 13120 [Eric A. Young] 13121 13122 *) Extended the ASN.1 parser routines. 13123 [Eric A. Young] 13124 13125 *) Extended BIO routines to support REUSEADDR, seek, tell, etc. 13126 [Eric A. Young] 13127 13128 *) Added a BN_CTX to the BN library. 13129 [Eric A. Young] 13130 13131 *) Fixed the weak key values in DES library 13132 [Eric A. Young] 13133 13134 *) Changed API in EVP library for cipher aliases. 13135 [Eric A. Young] 13136 13137 *) Added support for RC2/64bit cipher. 13138 [Eric A. Young] 13139 13140 *) Converted the lhash library to the crypto/mem.c functions. 13141 [Eric A. Young] 13142 13143 *) Added more recognized ASN.1 object ids. 13144 [Eric A. Young] 13145 13146 *) Added more RSA padding checks for SSL/TLS. 13147 [Eric A. Young] 13148 13149 *) Added BIO proxy/filter functionality. 13150 [Eric A. Young] 13151 13152 *) Added extra_certs to SSL_CTX which can be used 13153 send extra CA certificates to the client in the CA cert chain sending 13154 process. It can be configured with SSL_CTX_add_extra_chain_cert(). 13155 [Eric A. Young] 13156 13157 *) Now Fortezza is denied in the authentication phase because 13158 this is key exchange mechanism is not supported by SSLeay at all. 13159 [Eric A. Young] 13160 13161 *) Additional PKCS1 checks. 13162 [Eric A. Young] 13163 13164 *) Support the string "TLSv1" for all TLS v1 ciphers. 13165 [Eric A. Young] 13166 13167 *) Added function SSL_get_ex_data_X509_STORE_CTX_idx() which gives the 13168 ex_data index of the SSL context in the X509_STORE_CTX ex_data. 13169 [Eric A. Young] 13170 13171 *) Fixed a few memory leaks. 13172 [Eric A. Young] 13173 13174 *) Fixed various code and comment typos. 13175 [Eric A. Young] 13176 13177 *) A minor bug in ssl/s3_clnt.c where there would always be 4 0 13178 bytes sent in the client random. 13179 [Edward Bishop <ebishop@spyglass.com>] 13180