1 /* $OpenBSD: ssl_locl.h,v 1.128 2015/09/12 15:08:54 jsing Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 /* ==================================================================== 117 * Copyright 2005 Nokia. All rights reserved. 118 * 119 * The portions of the attached software ("Contribution") is developed by 120 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 121 * license. 122 * 123 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 124 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 125 * support (see RFC 4279) to OpenSSL. 126 * 127 * No patent licenses or other rights except those expressly stated in 128 * the OpenSSL open source license shall be deemed granted or received 129 * expressly, by implication, estoppel, or otherwise. 130 * 131 * No assurances are provided by Nokia that the Contribution does not 132 * infringe the patent or other intellectual property rights of any third 133 * party or that the license provides you with all the necessary rights 134 * to make use of the Contribution. 135 * 136 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 137 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 138 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 139 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 140 * OTHERWISE. 141 */ 142 143 #ifndef HEADER_SSL_LOCL_H 144 #define HEADER_SSL_LOCL_H 145 146 #include <sys/types.h> 147 148 #include <errno.h> 149 #include <stdlib.h> 150 #include <string.h> 151 #include <time.h> 152 #include <unistd.h> 153 154 #include <openssl/opensslconf.h> 155 #include <openssl/bio.h> 156 #include <openssl/buffer.h> 157 #include <openssl/dsa.h> 158 #include <openssl/err.h> 159 #include <openssl/rsa.h> 160 #include <openssl/ssl.h> 161 #include <openssl/stack.h> 162 163 #define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \ 164 l|=(((unsigned long)(*((c)++)))<< 8), \ 165 l|=(((unsigned long)(*((c)++)))<<16), \ 166 l|=(((unsigned long)(*((c)++)))<<24)) 167 168 /* NOTE - c is not incremented as per c2l */ 169 #define c2ln(c,l1,l2,n) { \ 170 c+=n; \ 171 l1=l2=0; \ 172 switch (n) { \ 173 case 8: l2 =((unsigned long)(*(--(c))))<<24; \ 174 case 7: l2|=((unsigned long)(*(--(c))))<<16; \ 175 case 6: l2|=((unsigned long)(*(--(c))))<< 8; \ 176 case 5: l2|=((unsigned long)(*(--(c)))); \ 177 case 4: l1 =((unsigned long)(*(--(c))))<<24; \ 178 case 3: l1|=((unsigned long)(*(--(c))))<<16; \ 179 case 2: l1|=((unsigned long)(*(--(c))))<< 8; \ 180 case 1: l1|=((unsigned long)(*(--(c)))); \ 181 } \ 182 } 183 184 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 185 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 186 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 187 *((c)++)=(unsigned char)(((l)>>24)&0xff)) 188 189 #define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24, \ 190 l|=((unsigned long)(*((c)++)))<<16, \ 191 l|=((unsigned long)(*((c)++)))<< 8, \ 192 l|=((unsigned long)(*((c)++)))) 193 194 #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ 195 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 196 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 197 *((c)++)=(unsigned char)(((l) )&0xff)) 198 199 #define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \ 200 *((c)++)=(unsigned char)(((l)>>48)&0xff), \ 201 *((c)++)=(unsigned char)(((l)>>40)&0xff), \ 202 *((c)++)=(unsigned char)(((l)>>32)&0xff), \ 203 *((c)++)=(unsigned char)(((l)>>24)&0xff), \ 204 *((c)++)=(unsigned char)(((l)>>16)&0xff), \ 205 *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ 206 *((c)++)=(unsigned char)(((l) )&0xff)) 207 208 /* NOTE - c is not incremented as per l2c */ 209 #define l2cn(l1,l2,c,n) { \ 210 c+=n; \ 211 switch (n) { \ 212 case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 213 case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 214 case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 215 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 216 case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 217 case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 218 case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 219 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 220 } \ 221 } 222 223 #define n2s(c,s) ((s=(((unsigned int)(c[0]))<< 8)| \ 224 (((unsigned int)(c[1])) )),c+=2) 225 #define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \ 226 c[1]=(unsigned char)(((s) )&0xff)),c+=2) 227 228 #define n2l3(c,l) ((l =(((unsigned long)(c[0]))<<16)| \ 229 (((unsigned long)(c[1]))<< 8)| \ 230 (((unsigned long)(c[2])) )),c+=3) 231 232 #define l2n3(l,c) ((c[0]=(unsigned char)(((l)>>16)&0xff), \ 233 c[1]=(unsigned char)(((l)>> 8)&0xff), \ 234 c[2]=(unsigned char)(((l) )&0xff)),c+=3) 235 236 /* LOCAL STUFF */ 237 238 #define SSL_DECRYPT 0 239 #define SSL_ENCRYPT 1 240 241 /* 242 * Define the Bitmasks for SSL_CIPHER.algorithms. 243 * This bits are used packed as dense as possible. If new methods/ciphers 244 * etc will be added, the bits a likely to change, so this information 245 * is for internal library use only, even though SSL_CIPHER.algorithms 246 * can be publicly accessed. 247 * Use the according functions for cipher management instead. 248 * 249 * The bit mask handling in the selection and sorting scheme in 250 * ssl_create_cipher_list() has only limited capabilities, reflecting 251 * that the different entities within are mutually exclusive: 252 * ONLY ONE BIT PER MASK CAN BE SET AT A TIME. 253 */ 254 255 /* Bits for algorithm_mkey (key exchange algorithm) */ 256 #define SSL_kRSA 0x00000001L /* RSA key exchange */ 257 #define SSL_kDHE 0x00000008L /* tmp DH key no DH cert */ 258 #define SSL_kECDHr 0x00000020L /* ECDH cert, RSA CA cert */ 259 #define SSL_kECDHe 0x00000040L /* ECDH cert, ECDSA CA cert */ 260 #define SSL_kECDHE 0x00000080L /* ephemeral ECDH */ 261 #define SSL_kGOST 0x00000200L /* GOST key exchange */ 262 263 /* Bits for algorithm_auth (server authentication) */ 264 #define SSL_aRSA 0x00000001L /* RSA auth */ 265 #define SSL_aDSS 0x00000002L /* DSS auth */ 266 #define SSL_aNULL 0x00000004L /* no auth (i.e. use ADH or AECDH) */ 267 #define SSL_aECDH 0x00000010L /* Fixed ECDH auth (kECDHe or kECDHr) */ 268 #define SSL_aECDSA 0x00000040L /* ECDSA auth*/ 269 #define SSL_aGOST01 0x00000200L /* GOST R 34.10-2001 signature auth */ 270 271 272 /* Bits for algorithm_enc (symmetric encryption) */ 273 #define SSL_DES 0x00000001L 274 #define SSL_3DES 0x00000002L 275 #define SSL_RC4 0x00000004L 276 #define SSL_IDEA 0x00000008L 277 #define SSL_eNULL 0x00000010L 278 #define SSL_AES128 0x00000020L 279 #define SSL_AES256 0x00000040L 280 #define SSL_CAMELLIA128 0x00000080L 281 #define SSL_CAMELLIA256 0x00000100L 282 #define SSL_eGOST2814789CNT 0x00000200L 283 #define SSL_AES128GCM 0x00000400L 284 #define SSL_AES256GCM 0x00000800L 285 #define SSL_CHACHA20POLY1305 0x00001000L 286 #define SSL_CHACHA20POLY1305_OLD 0x00002000L 287 288 #define SSL_AES (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM) 289 #define SSL_CAMELLIA (SSL_CAMELLIA128|SSL_CAMELLIA256) 290 291 292 /* Bits for algorithm_mac (symmetric authentication) */ 293 294 #define SSL_MD5 0x00000001L 295 #define SSL_SHA1 0x00000002L 296 #define SSL_GOST94 0x00000004L 297 #define SSL_GOST89MAC 0x00000008L 298 #define SSL_SHA256 0x00000010L 299 #define SSL_SHA384 0x00000020L 300 /* Not a real MAC, just an indication it is part of cipher */ 301 #define SSL_AEAD 0x00000040L 302 #define SSL_STREEBOG256 0x00000080L 303 #define SSL_STREEBOG512 0x00000100L 304 305 /* Bits for algorithm_ssl (protocol version) */ 306 #define SSL_SSLV3 0x00000002L 307 #define SSL_TLSV1 SSL_SSLV3 /* for now */ 308 #define SSL_TLSV1_2 0x00000004L 309 310 311 /* Bits for algorithm2 (handshake digests and other extra flags) */ 312 313 #define SSL_HANDSHAKE_MAC_MD5 0x10 314 #define SSL_HANDSHAKE_MAC_SHA 0x20 315 #define SSL_HANDSHAKE_MAC_GOST94 0x40 316 #define SSL_HANDSHAKE_MAC_SHA256 0x80 317 #define SSL_HANDSHAKE_MAC_SHA384 0x100 318 #define SSL_HANDSHAKE_MAC_STREEBOG256 0x200 319 #define SSL_HANDSHAKE_MAC_STREEBOG512 0x400 320 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA) 321 322 /* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX 323 * make sure to update this constant too */ 324 #define SSL_MAX_DIGEST 8 325 326 #define SSL3_CK_ID 0x03000000 327 #define SSL3_CK_VALUE_MASK 0x0000ffff 328 329 #define TLS1_PRF_DGST_MASK (0xff << TLS1_PRF_DGST_SHIFT) 330 331 #define TLS1_PRF_DGST_SHIFT 10 332 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT) 333 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT) 334 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT) 335 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT) 336 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT) 337 #define TLS1_PRF_STREEBOG256 (SSL_HANDSHAKE_MAC_STREEBOG256 << TLS1_PRF_DGST_SHIFT) 338 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1) 339 340 /* Stream MAC for GOST ciphersuites from cryptopro draft 341 * (currently this also goes into algorithm2) */ 342 #define TLS1_STREAM_MAC 0x04 343 344 /* 345 * SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD is an algorithm2 flag that 346 * indicates that the variable part of the nonce is included as a prefix of 347 * the record (AES-GCM, for example, does this with an 8-byte variable nonce.) 348 */ 349 #define SSL_CIPHER_ALGORITHM2_VARIABLE_NONCE_IN_RECORD (1 << 22) 350 351 /* 352 * SSL_CIPHER_ALGORITHM2_AEAD is an algorithm2 flag that indicates the cipher 353 * is implemented via an EVP_AEAD. 354 */ 355 #define SSL_CIPHER_ALGORITHM2_AEAD (1 << 23) 356 357 /* 358 * SSL_CIPHER_AEAD_FIXED_NONCE_LEN returns the number of bytes of fixed nonce 359 * for an SSL_CIPHER with the SSL_CIPHER_ALGORITHM2_AEAD flag. 360 */ 361 #define SSL_CIPHER_AEAD_FIXED_NONCE_LEN(ssl_cipher) \ 362 (((ssl_cipher->algorithm2 >> 24) & 0xf) * 2) 363 364 /* 365 * Cipher strength information. 366 */ 367 #define SSL_STRONG_MASK 0x000001fcL 368 #define SSL_STRONG_NONE 0x00000004L 369 #define SSL_LOW 0x00000020L 370 #define SSL_MEDIUM 0x00000040L 371 #define SSL_HIGH 0x00000080L 372 373 /* 374 * The keylength (measured in RSA key bits, I guess) for temporary keys. 375 * Cipher argument is so that this can be variable in the future. 376 */ 377 #define SSL_C_PKEYLENGTH(c) 1024 378 379 /* Check if an SSL structure is using DTLS. */ 380 #define SSL_IS_DTLS(s) (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS) 381 382 /* See if we need explicit IV. */ 383 #define SSL_USE_EXPLICIT_IV(s) \ 384 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_EXPLICIT_IV) 385 386 /* See if we use signature algorithms extension. */ 387 #define SSL_USE_SIGALGS(s) \ 388 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_SIGALGS) 389 390 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 391 #define SSL_USE_TLS1_2_CIPHERS(s) \ 392 (s->method->ssl3_enc->enc_flags & SSL_ENC_FLAG_TLS1_2_CIPHERS) 393 394 /* Mostly for SSLv3 */ 395 #define SSL_PKEY_RSA_ENC 0 396 #define SSL_PKEY_RSA_SIGN 1 397 #define SSL_PKEY_DSA_SIGN 2 398 #define SSL_PKEY_DH_RSA 3 399 #define SSL_PKEY_DH_DSA 4 400 #define SSL_PKEY_ECC 5 401 #define SSL_PKEY_GOST01 6 402 #define SSL_PKEY_NUM 7 403 404 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) | 405 * <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN) 406 * SSL_kDH <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN) 407 * SSL_kDHE <- RSA_ENC | RSA_SIGN | DSA_SIGN 408 * SSL_aRSA <- RSA_ENC | RSA_SIGN 409 * SSL_aDSS <- DSA_SIGN 410 */ 411 412 /* 413 #define CERT_INVALID 0 414 #define CERT_PUBLIC_KEY 1 415 #define CERT_PRIVATE_KEY 2 416 */ 417 418 /* From ECC-TLS draft, used in encoding the curve type in 419 * ECParameters 420 */ 421 #define EXPLICIT_PRIME_CURVE_TYPE 1 422 #define EXPLICIT_CHAR2_CURVE_TYPE 2 423 #define NAMED_CURVE_TYPE 3 424 425 typedef struct cert_pkey_st { 426 X509 *x509; 427 EVP_PKEY *privatekey; 428 /* Digest to use when signing */ 429 const EVP_MD *digest; 430 } CERT_PKEY; 431 432 typedef struct cert_st { 433 /* Current active set */ 434 CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array 435 * Probably it would make more sense to store 436 * an index, not a pointer. */ 437 438 /* The following masks are for the key and auth 439 * algorithms that are supported by the certs below */ 440 int valid; 441 unsigned long mask_k; 442 unsigned long mask_a; 443 444 DH *dh_tmp; 445 DH *(*dh_tmp_cb)(SSL *ssl, int is_export, int keysize); 446 int dh_tmp_auto; 447 448 EC_KEY *ecdh_tmp; 449 EC_KEY *(*ecdh_tmp_cb)(SSL *ssl, int is_export, int keysize); 450 int ecdh_tmp_auto; 451 452 CERT_PKEY pkeys[SSL_PKEY_NUM]; 453 454 int references; /* >1 only if SSL_copy_session_id is used */ 455 } CERT; 456 457 458 typedef struct sess_cert_st { 459 STACK_OF(X509) *cert_chain; /* as received from peer */ 460 461 /* The 'peer_...' members are used only by clients. */ 462 int peer_cert_type; 463 464 CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */ 465 CERT_PKEY peer_pkeys[SSL_PKEY_NUM]; 466 /* Obviously we don't have the private keys of these, 467 * so maybe we shouldn't even use the CERT_PKEY type here. */ 468 469 DH *peer_dh_tmp; 470 EC_KEY *peer_ecdh_tmp; 471 472 int references; /* actually always 1 at the moment */ 473 } SESS_CERT; 474 475 476 /*#define SSL_DEBUG */ 477 /*#define RSA_DEBUG */ 478 479 /* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff 480 * It is a bit of a mess of functions, but hell, think of it as 481 * an opaque structure :-) */ 482 typedef struct ssl3_enc_method { 483 int (*enc)(SSL *, int); 484 int (*mac)(SSL *, unsigned char *, int); 485 int (*setup_key_block)(SSL *); 486 int (*generate_master_secret)(SSL *, unsigned char *, 487 unsigned char *, int); 488 int (*change_cipher_state)(SSL *, int); 489 int (*final_finish_mac)(SSL *, const char *, int, unsigned char *); 490 int finish_mac_length; 491 int (*cert_verify_mac)(SSL *, int, unsigned char *); 492 const char *client_finished_label; 493 int client_finished_label_len; 494 const char *server_finished_label; 495 int server_finished_label_len; 496 int (*alert_value)(int); 497 int (*export_keying_material)(SSL *, unsigned char *, size_t, 498 const char *, size_t, const unsigned char *, size_t, 499 int use_context); 500 /* Flags indicating protocol version requirements. */ 501 unsigned int enc_flags; 502 } SSL3_ENC_METHOD; 503 504 /* 505 * Flag values for enc_flags. 506 */ 507 508 /* Uses explicit IV. */ 509 #define SSL_ENC_FLAG_EXPLICIT_IV (1 << 0) 510 511 /* Uses signature algorithms extension. */ 512 #define SSL_ENC_FLAG_SIGALGS (1 << 1) 513 514 /* Uses SHA256 default PRF. */ 515 #define SSL_ENC_FLAG_SHA256_PRF (1 << 2) 516 517 /* Is DTLS. */ 518 #define SSL_ENC_FLAG_DTLS (1 << 3) 519 520 /* Allow TLS 1.2 ciphersuites: applies to DTLS 1.2 as well as TLS 1.2. */ 521 #define SSL_ENC_FLAG_TLS1_2_CIPHERS (1 << 4) 522 523 /* 524 * ssl_aead_ctx_st contains information about an AEAD that is being used to 525 * encrypt an SSL connection. 526 */ 527 struct ssl_aead_ctx_st { 528 EVP_AEAD_CTX ctx; 529 /* 530 * fixed_nonce contains any bytes of the nonce that are fixed for all 531 * records. 532 */ 533 unsigned char fixed_nonce[12]; 534 unsigned char fixed_nonce_len; 535 unsigned char variable_nonce_len; 536 unsigned char xor_fixed_nonce; 537 unsigned char tag_len; 538 /* 539 * variable_nonce_in_record is non-zero if the variable nonce 540 * for a record is included as a prefix before the ciphertext. 541 */ 542 char variable_nonce_in_record; 543 }; 544 545 extern SSL3_ENC_METHOD ssl3_undef_enc_method; 546 extern SSL_CIPHER ssl3_ciphers[]; 547 548 const char *ssl_version_string(int ver); 549 uint16_t ssl_max_server_version(SSL *s); 550 551 extern SSL3_ENC_METHOD DTLSv1_enc_data; 552 extern SSL3_ENC_METHOD TLSv1_enc_data; 553 extern SSL3_ENC_METHOD TLSv1_1_enc_data; 554 extern SSL3_ENC_METHOD TLSv1_2_enc_data; 555 556 void ssl_clear_cipher_ctx(SSL *s); 557 int ssl_clear_bad_session(SSL *s); 558 CERT *ssl_cert_new(void); 559 CERT *ssl_cert_dup(CERT *cert); 560 int ssl_cert_inst(CERT **o); 561 void ssl_cert_free(CERT *c); 562 SESS_CERT *ssl_sess_cert_new(void); 563 void ssl_sess_cert_free(SESS_CERT *sc); 564 int ssl_get_new_session(SSL *s, int session); 565 int ssl_get_prev_session(SSL *s, unsigned char *session, int len, 566 const unsigned char *limit); 567 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b); 568 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id); 569 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap, 570 const SSL_CIPHER * const *bp); 571 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, const unsigned char *p, 572 int num); 573 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, 574 unsigned char *p); 575 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth, 576 STACK_OF(SSL_CIPHER) **pref, STACK_OF(SSL_CIPHER) **sorted, 577 const char *rule_str); 578 void ssl_update_cache(SSL *s, int mode); 579 int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, 580 const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size); 581 int ssl_cipher_get_evp_aead(const SSL_SESSION *s, const EVP_AEAD **aead); 582 int ssl_get_handshake_digest(int i, long *mask, const EVP_MD **md); 583 584 int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk); 585 int ssl_undefined_function(SSL *s); 586 int ssl_undefined_void_function(void); 587 int ssl_undefined_const_function(const SSL *s); 588 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s); 589 X509 *ssl_get_server_send_cert(const SSL *); 590 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *c, const EVP_MD **pmd); 591 DH *ssl_get_auto_dh(SSL *s); 592 int ssl_cert_type(X509 *x, EVP_PKEY *pkey); 593 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher); 594 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s); 595 int ssl_verify_alarm_type(long type); 596 void ssl_load_ciphers(void); 597 598 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p); 599 int ssl3_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p); 600 int ssl3_send_server_certificate(SSL *s); 601 int ssl3_send_newsession_ticket(SSL *s); 602 int ssl3_send_cert_status(SSL *s); 603 int ssl3_get_finished(SSL *s, int state_a, int state_b); 604 int ssl3_send_change_cipher_spec(SSL *s, int state_a, int state_b); 605 int ssl3_do_write(SSL *s, int type); 606 int ssl3_send_alert(SSL *s, int level, int desc); 607 int ssl3_get_req_cert_type(SSL *s, unsigned char *p); 608 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 609 int ssl3_send_finished(SSL *s, int a, int b, const char *sender, int slen); 610 int ssl3_num_ciphers(void); 611 const SSL_CIPHER *ssl3_get_cipher(unsigned int u); 612 const SSL_CIPHER *ssl3_get_cipher_by_id(unsigned int id); 613 const SSL_CIPHER *ssl3_get_cipher_by_value(uint16_t value); 614 uint16_t ssl3_cipher_get_value(const SSL_CIPHER *c); 615 int ssl3_renegotiate(SSL *ssl); 616 617 int ssl3_renegotiate_check(SSL *ssl); 618 619 int ssl3_dispatch_alert(SSL *s); 620 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 621 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len); 622 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x); 623 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl, STACK_OF(SSL_CIPHER) *clnt, 624 STACK_OF(SSL_CIPHER) *srvr); 625 int ssl3_setup_buffers(SSL *s); 626 int ssl3_setup_init_buffer(SSL *s); 627 int ssl3_setup_read_buffer(SSL *s); 628 int ssl3_setup_write_buffer(SSL *s); 629 int ssl3_release_read_buffer(SSL *s); 630 int ssl3_release_write_buffer(SSL *s); 631 int ssl3_new(SSL *s); 632 void ssl3_free(SSL *s); 633 int ssl3_accept(SSL *s); 634 int ssl3_connect(SSL *s); 635 int ssl3_read(SSL *s, void *buf, int len); 636 int ssl3_peek(SSL *s, void *buf, int len); 637 int ssl3_write(SSL *s, const void *buf, int len); 638 int ssl3_shutdown(SSL *s); 639 void ssl3_clear(SSL *s); 640 long ssl3_ctrl(SSL *s, int cmd, long larg, void *parg); 641 long ssl3_ctx_ctrl(SSL_CTX *s, int cmd, long larg, void *parg); 642 long ssl3_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); 643 long ssl3_ctx_callback_ctrl(SSL_CTX *s, int cmd, void (*fp)(void)); 644 int ssl3_pending(const SSL *s); 645 646 int ssl3_handshake_msg_hdr_len(SSL *s); 647 unsigned char *ssl3_handshake_msg_start(SSL *s, uint8_t htype); 648 void ssl3_handshake_msg_finish(SSL *s, unsigned int len); 649 int ssl3_handshake_write(SSL *s); 650 651 void tls1_record_sequence_increment(unsigned char *seq); 652 int ssl3_do_change_cipher_spec(SSL *ssl); 653 654 int ssl23_read(SSL *s, void *buf, int len); 655 int ssl23_peek(SSL *s, void *buf, int len); 656 int ssl23_write(SSL *s, const void *buf, int len); 657 long ssl23_default_timeout(void); 658 659 long tls1_default_timeout(void); 660 int dtls1_do_write(SSL *s, int type); 661 int ssl3_read_n(SSL *s, int n, int max, int extend); 662 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek); 663 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf, 664 unsigned int len); 665 unsigned char *dtls1_set_message_header(SSL *s, unsigned char *p, 666 unsigned char mt, unsigned long len, unsigned long frag_off, 667 unsigned long frag_len); 668 669 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len); 670 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len); 671 672 int dtls1_send_change_cipher_spec(SSL *s, int a, int b); 673 unsigned long dtls1_output_cert_chain(SSL *s, X509 *x); 674 int dtls1_read_failed(SSL *s, int code); 675 int dtls1_buffer_message(SSL *s, int ccs); 676 int dtls1_retransmit_message(SSL *s, unsigned short seq, 677 unsigned long frag_off, int *found); 678 int dtls1_get_queue_priority(unsigned short seq, int is_ccs); 679 int dtls1_retransmit_buffered_messages(SSL *s); 680 void dtls1_clear_record_buffer(SSL *s); 681 int dtls1_get_message_header(unsigned char *data, 682 struct hm_header_st *msg_hdr); 683 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr); 684 void dtls1_reset_seq_numbers(SSL *s, int rw); 685 void dtls1_build_sequence_number(unsigned char *dst, unsigned char *seq, 686 unsigned short epoch); 687 long dtls1_default_timeout(void); 688 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft); 689 int dtls1_check_timeout_num(SSL *s); 690 int dtls1_handle_timeout(SSL *s); 691 const SSL_CIPHER *dtls1_get_cipher(unsigned int u); 692 void dtls1_start_timer(SSL *s); 693 void dtls1_stop_timer(SSL *s); 694 int dtls1_is_timer_expired(SSL *s); 695 void dtls1_double_timeout(SSL *s); 696 unsigned int dtls1_min_mtu(void); 697 698 /* some client-only functions */ 699 int ssl3_client_hello(SSL *s); 700 int ssl3_get_server_hello(SSL *s); 701 int ssl3_get_certificate_request(SSL *s); 702 int ssl3_get_new_session_ticket(SSL *s); 703 int ssl3_get_cert_status(SSL *s); 704 int ssl3_get_server_done(SSL *s); 705 int ssl3_send_client_verify(SSL *s); 706 int ssl3_send_client_certificate(SSL *s); 707 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey); 708 int ssl3_send_client_key_exchange(SSL *s); 709 int ssl3_get_key_exchange(SSL *s); 710 int ssl3_get_server_certificate(SSL *s); 711 int ssl3_check_cert_and_algorithm(SSL *s); 712 int ssl3_check_finished(SSL *s); 713 int ssl3_send_next_proto(SSL *s); 714 715 int dtls1_send_client_certificate(SSL *s); 716 717 /* some server-only functions */ 718 int ssl3_get_client_hello(SSL *s); 719 int ssl3_send_server_hello(SSL *s); 720 int ssl3_send_hello_request(SSL *s); 721 int ssl3_send_server_key_exchange(SSL *s); 722 int ssl3_send_certificate_request(SSL *s); 723 int ssl3_send_server_done(SSL *s); 724 int ssl3_get_client_certificate(SSL *s); 725 int ssl3_get_client_key_exchange(SSL *s); 726 int ssl3_get_cert_verify(SSL *s); 727 int ssl3_get_next_proto(SSL *s); 728 729 int dtls1_send_server_certificate(SSL *s); 730 731 int ssl23_accept(SSL *s); 732 int ssl23_connect(SSL *s); 733 int ssl23_read_bytes(SSL *s, int n); 734 int ssl23_write_bytes(SSL *s); 735 736 int tls1_new(SSL *s); 737 void tls1_free(SSL *s); 738 void tls1_clear(SSL *s); 739 long tls1_ctrl(SSL *s, int cmd, long larg, void *parg); 740 long tls1_callback_ctrl(SSL *s, int cmd, void (*fp)(void)); 741 742 int dtls1_new(SSL *s); 743 int dtls1_accept(SSL *s); 744 int dtls1_connect(SSL *s); 745 void dtls1_free(SSL *s); 746 void dtls1_clear(SSL *s); 747 long dtls1_ctrl(SSL *s, int cmd, long larg, void *parg); 748 int dtls1_shutdown(SSL *s); 749 750 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok); 751 int dtls1_get_record(SSL *s); 752 int do_dtls1_write(SSL *s, int type, const unsigned char *buf, 753 unsigned int len); 754 int dtls1_dispatch_alert(SSL *s); 755 int dtls1_enc(SSL *s, int snd); 756 757 int ssl_init_wbio_buffer(SSL *s, int push); 758 void ssl_free_wbio_buffer(SSL *s); 759 760 int tls1_init_finished_mac(SSL *s); 761 void tls1_finish_mac(SSL *s, const unsigned char *buf, int len); 762 void tls1_free_digest_list(SSL *s); 763 void tls1_cleanup_key_block(SSL *s); 764 int tls1_digest_cached_records(SSL *s); 765 int tls1_change_cipher_state(SSL *s, int which); 766 int tls1_setup_key_block(SSL *s); 767 int tls1_enc(SSL *s, int snd); 768 int tls1_final_finish_mac(SSL *s, const char *str, int slen, unsigned char *p); 769 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p); 770 int tls1_mac(SSL *ssl, unsigned char *md, int snd); 771 int tls1_generate_master_secret(SSL *s, unsigned char *out, 772 unsigned char *p, int len); 773 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen, 774 const char *label, size_t llen, const unsigned char *p, size_t plen, 775 int use_context); 776 int tls1_alert_code(int code); 777 int ssl_ok(SSL *s); 778 779 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s); 780 781 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n); 782 783 int tls1_ec_curve_id2nid(uint16_t curve_id); 784 uint16_t tls1_ec_nid2curve_id(int nid); 785 int tls1_check_curve(SSL *s, const unsigned char *p, size_t len); 786 int tls1_get_shared_curve(SSL *s); 787 788 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, 789 unsigned char *limit); 790 791 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, 792 unsigned char *limit); 793 794 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data, 795 unsigned char *d, int n, int *al); 796 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, 797 unsigned char *d, int n, int *al); 798 int ssl_check_clienthello_tlsext_early(SSL *s); 799 int ssl_check_clienthello_tlsext_late(SSL *s); 800 int ssl_check_serverhello_tlsext(SSL *s); 801 802 #define tlsext_tick_md EVP_sha256 803 int tls1_process_ticket(SSL *s, const unsigned char *session_id, int len, 804 const unsigned char *limit, SSL_SESSION **ret); 805 int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk, 806 const EVP_MD *md); 807 int tls12_get_sigid(const EVP_PKEY *pk); 808 const EVP_MD *tls12_get_hash(unsigned char hash_alg); 809 810 void ssl_clear_hash_ctx(EVP_MD_CTX **hash); 811 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, 812 int *len, int maxlen); 813 int ssl_parse_serverhello_renegotiate_ext(SSL *s, const unsigned char *d, 814 int len, int *al); 815 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, 816 int *len, int maxlen); 817 int ssl_parse_clienthello_renegotiate_ext(SSL *s, const unsigned char *d, 818 int len, int *al); 819 long ssl_get_algorithm2(SSL *s); 820 int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize); 821 int tls12_get_req_sig_algs(SSL *s, unsigned char *p); 822 823 int tls1_check_ec_server_key(SSL *s); 824 int tls1_check_ec_tmp_key(SSL *s); 825 826 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, 827 int *len, int maxlen); 828 int ssl_parse_clienthello_use_srtp_ext(SSL *s, const unsigned char *d, 829 int len, int *al); 830 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, 831 int *len, int maxlen); 832 int ssl_parse_serverhello_use_srtp_ext(SSL *s, const unsigned char *d, 833 int len, int *al); 834 835 /* s3_cbc.c */ 836 void ssl3_cbc_copy_mac(unsigned char *out, const SSL3_RECORD *rec, 837 unsigned md_size, unsigned orig_len); 838 int tls1_cbc_remove_padding(const SSL *s, SSL3_RECORD *rec, 839 unsigned block_size, unsigned mac_size); 840 char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx); 841 int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx, unsigned char *md_out, 842 size_t *md_out_size, const unsigned char header[13], 843 const unsigned char *data, size_t data_plus_mac_size, 844 size_t data_plus_mac_plus_padding_size, const unsigned char *mac_secret, 845 unsigned mac_secret_length, char is_sslv3); 846 847 #endif 848