1 /* $FreeBSD$ */ 2 /* $OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $ */ 3 4 /*- 5 * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu) 6 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting 7 * 8 * This code was written by Angelos D. Keromytis in Athens, Greece, in 9 * February 2000. Network Security Technologies Inc. (NSTI) kindly 10 * supported the development of this code. 11 * 12 * Copyright (c) 2000 Angelos D. Keromytis 13 * 14 * Permission to use, copy, and modify this software with or without fee 15 * is hereby granted, provided that this entire notice is included in 16 * all source code copies of any software which is or includes a copy or 17 * modification of this software. 18 * 19 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 20 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY 21 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 22 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 23 * PURPOSE. 24 * 25 * Copyright (c) 2001 Theo de Raadt 26 * Copyright (c) 2014 The FreeBSD Foundation 27 * All rights reserved. 28 * 29 * Portions of this software were developed by John-Mark Gurney 30 * under sponsorship of the FreeBSD Foundation and 31 * Rubicon Communications, LLC (Netgate). 32 * 33 * Redistribution and use in source and binary forms, with or without 34 * modification, are permitted provided that the following conditions 35 * are met: 36 * 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. The name of the author may not be used to endorse or promote products 43 * derived from this software without specific prior written permission. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 * 56 * Effort sponsored in part by the Defense Advanced Research Projects 57 * Agency (DARPA) and Air Force Research Laboratory, Air Force 58 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 59 * 60 */ 61 62 #ifndef _CRYPTO_CRYPTO_H_ 63 #define _CRYPTO_CRYPTO_H_ 64 65 #include <sys/ioccom.h> 66 67 /* Some initial values */ 68 #define CRYPTO_DRIVERS_INITIAL 4 69 #define CRYPTO_SW_SESSIONS 32 70 71 /* Hash values */ 72 #define NULL_HASH_LEN 16 73 #define MD5_HASH_LEN 16 74 #define SHA1_HASH_LEN 20 75 #define RIPEMD160_HASH_LEN 20 76 #define SHA2_256_HASH_LEN 32 77 #define SHA2_384_HASH_LEN 48 78 #define SHA2_512_HASH_LEN 64 79 #define MD5_KPDK_HASH_LEN 16 80 #define SHA1_KPDK_HASH_LEN 20 81 #define AES_GMAC_HASH_LEN 16 82 /* Maximum hash algorithm result length */ 83 #define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */ 84 85 /* HMAC values */ 86 #define NULL_HMAC_BLOCK_LEN 64 87 #define MD5_HMAC_BLOCK_LEN 64 88 #define SHA1_HMAC_BLOCK_LEN 64 89 #define RIPEMD160_HMAC_BLOCK_LEN 64 90 #define SHA2_256_HMAC_BLOCK_LEN 64 91 #define SHA2_384_HMAC_BLOCK_LEN 128 92 #define SHA2_512_HMAC_BLOCK_LEN 128 93 /* Maximum HMAC block length */ 94 #define HMAC_MAX_BLOCK_LEN SHA2_512_HMAC_BLOCK_LEN /* Keep this updated */ 95 #define HMAC_IPAD_VAL 0x36 96 #define HMAC_OPAD_VAL 0x5C 97 /* HMAC Key Length */ 98 #define NULL_HMAC_KEY_LEN 0 99 #define MD5_HMAC_KEY_LEN 16 100 #define SHA1_HMAC_KEY_LEN 20 101 #define RIPEMD160_HMAC_KEY_LEN 20 102 #define SHA2_256_HMAC_KEY_LEN 32 103 #define SHA2_384_HMAC_KEY_LEN 48 104 #define SHA2_512_HMAC_KEY_LEN 64 105 #define AES_128_GMAC_KEY_LEN 16 106 #define AES_192_GMAC_KEY_LEN 24 107 #define AES_256_GMAC_KEY_LEN 32 108 109 /* Encryption algorithm block sizes */ 110 #define NULL_BLOCK_LEN 4 /* IPsec to maintain alignment */ 111 #define DES_BLOCK_LEN 8 112 #define DES3_BLOCK_LEN 8 113 #define BLOWFISH_BLOCK_LEN 8 114 #define SKIPJACK_BLOCK_LEN 8 115 #define CAST128_BLOCK_LEN 8 116 #define RIJNDAEL128_BLOCK_LEN 16 117 #define AES_BLOCK_LEN 16 118 #define AES_ICM_BLOCK_LEN 1 119 #define ARC4_BLOCK_LEN 1 120 #define CAMELLIA_BLOCK_LEN 16 121 #define EALG_MAX_BLOCK_LEN AES_BLOCK_LEN /* Keep this updated */ 122 123 /* IV Lengths */ 124 125 #define ARC4_IV_LEN 1 126 #define AES_GCM_IV_LEN 12 127 #define AES_XTS_IV_LEN 8 128 #define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */ 129 130 /* Min and Max Encryption Key Sizes */ 131 #define NULL_MIN_KEY 0 132 #define NULL_MAX_KEY 256 /* 2048 bits, max key */ 133 #define DES_MIN_KEY 8 134 #define DES_MAX_KEY DES_MIN_KEY 135 #define TRIPLE_DES_MIN_KEY 24 136 #define TRIPLE_DES_MAX_KEY TRIPLE_DES_MIN_KEY 137 #define BLOWFISH_MIN_KEY 5 138 #define BLOWFISH_MAX_KEY 56 /* 448 bits, max key */ 139 #define CAST_MIN_KEY 5 140 #define CAST_MAX_KEY 16 141 #define SKIPJACK_MIN_KEY 10 142 #define SKIPJACK_MAX_KEY SKIPJACK_MIN_KEY 143 #define RIJNDAEL_MIN_KEY 16 144 #define RIJNDAEL_MAX_KEY 32 145 #define AES_MIN_KEY RIJNDAEL_MIN_KEY 146 #define AES_MAX_KEY RIJNDAEL_MAX_KEY 147 #define AES_XTS_MIN_KEY (2 * AES_MIN_KEY) 148 #define AES_XTS_MAX_KEY (2 * AES_MAX_KEY) 149 #define ARC4_MIN_KEY 1 150 #define ARC4_MAX_KEY 32 151 #define CAMELLIA_MIN_KEY 8 152 #define CAMELLIA_MAX_KEY 32 153 154 /* Maximum hash algorithm result length */ 155 #define AALG_MAX_RESULT_LEN 64 /* Keep this updated */ 156 157 #define CRYPTO_ALGORITHM_MIN 1 158 #define CRYPTO_DES_CBC 1 159 #define CRYPTO_3DES_CBC 2 160 #define CRYPTO_BLF_CBC 3 161 #define CRYPTO_CAST_CBC 4 162 #define CRYPTO_SKIPJACK_CBC 5 163 #define CRYPTO_MD5_HMAC 6 164 #define CRYPTO_SHA1_HMAC 7 165 #define CRYPTO_RIPEMD160_HMAC 8 166 #define CRYPTO_MD5_KPDK 9 167 #define CRYPTO_SHA1_KPDK 10 168 #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */ 169 #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */ 170 #define CRYPTO_ARC4 12 171 #define CRYPTO_MD5 13 172 #define CRYPTO_SHA1 14 173 #define CRYPTO_NULL_HMAC 15 174 #define CRYPTO_NULL_CBC 16 175 #define CRYPTO_DEFLATE_COMP 17 /* Deflate compression algorithm */ 176 #define CRYPTO_SHA2_256_HMAC 18 177 #define CRYPTO_SHA2_384_HMAC 19 178 #define CRYPTO_SHA2_512_HMAC 20 179 #define CRYPTO_CAMELLIA_CBC 21 180 #define CRYPTO_AES_XTS 22 181 #define CRYPTO_AES_ICM 23 /* commonly known as CTR mode */ 182 #define CRYPTO_AES_NIST_GMAC 24 /* cipher side */ 183 #define CRYPTO_AES_NIST_GCM_16 25 /* 16 byte ICV */ 184 #define CRYPTO_AES_128_NIST_GMAC 26 /* auth side */ 185 #define CRYPTO_AES_192_NIST_GMAC 27 /* auth side */ 186 #define CRYPTO_AES_256_NIST_GMAC 28 /* auth side */ 187 #define CRYPTO_ALGORITHM_MAX 28 /* Keep updated - see below */ 188 189 #define CRYPTO_ALGO_VALID(x) ((x) >= CRYPTO_ALGORITHM_MIN && \ 190 (x) <= CRYPTO_ALGORITHM_MAX) 191 192 /* Algorithm flags */ 193 #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */ 194 #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */ 195 #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */ 196 197 /* 198 * Crypto driver/device flags. They can set in the crid 199 * parameter when creating a session or submitting a key 200 * op to affect the device/driver assigned. If neither 201 * of these are specified then the crid is assumed to hold 202 * the driver id of an existing (and suitable) device that 203 * must be used to satisfy the request. 204 */ 205 #define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */ 206 #define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */ 207 208 /* NB: deprecated */ 209 struct session_op { 210 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 211 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 212 213 u_int32_t keylen; /* cipher key */ 214 caddr_t key; 215 int mackeylen; /* mac key */ 216 caddr_t mackey; 217 218 u_int32_t ses; /* returns: session # */ 219 }; 220 221 struct session2_op { 222 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 223 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 224 225 u_int32_t keylen; /* cipher key */ 226 caddr_t key; 227 int mackeylen; /* mac key */ 228 caddr_t mackey; 229 230 u_int32_t ses; /* returns: session # */ 231 int crid; /* driver id + flags (rw) */ 232 int pad[4]; /* for future expansion */ 233 }; 234 235 struct crypt_op { 236 u_int32_t ses; 237 u_int16_t op; /* i.e. COP_ENCRYPT */ 238 #define COP_ENCRYPT 1 239 #define COP_DECRYPT 2 240 u_int16_t flags; 241 #define COP_F_BATCH 0x0008 /* Batch op if possible */ 242 u_int len; 243 caddr_t src, dst; /* become iov[] inside kernel */ 244 caddr_t mac; /* must be big enough for chosen MAC */ 245 caddr_t iv; 246 }; 247 248 /* op and flags the same as crypt_op */ 249 struct crypt_aead { 250 u_int32_t ses; 251 u_int16_t op; /* i.e. COP_ENCRYPT */ 252 u_int16_t flags; 253 u_int len; 254 u_int aadlen; 255 u_int ivlen; 256 caddr_t src, dst; /* become iov[] inside kernel */ 257 caddr_t aad; /* additional authenticated data */ 258 caddr_t tag; /* must fit for chosen TAG length */ 259 caddr_t iv; 260 }; 261 262 /* 263 * Parameters for looking up a crypto driver/device by 264 * device name or by id. The latter are returned for 265 * created sessions (crid) and completed key operations. 266 */ 267 struct crypt_find_op { 268 int crid; /* driver id + flags */ 269 char name[32]; /* device/driver name */ 270 }; 271 272 /* bignum parameter, in packed bytes, ... */ 273 struct crparam { 274 caddr_t crp_p; 275 u_int crp_nbits; 276 }; 277 278 #define CRK_MAXPARAM 8 279 280 struct crypt_kop { 281 u_int crk_op; /* ie. CRK_MOD_EXP or other */ 282 u_int crk_status; /* return status */ 283 u_short crk_iparams; /* # of input parameters */ 284 u_short crk_oparams; /* # of output parameters */ 285 u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */ 286 struct crparam crk_param[CRK_MAXPARAM]; 287 }; 288 #define CRK_ALGORITM_MIN 0 289 #define CRK_MOD_EXP 0 290 #define CRK_MOD_EXP_CRT 1 291 #define CRK_DSA_SIGN 2 292 #define CRK_DSA_VERIFY 3 293 #define CRK_DH_COMPUTE_KEY 4 294 #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */ 295 296 #define CRF_MOD_EXP (1 << CRK_MOD_EXP) 297 #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT) 298 #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN) 299 #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY) 300 #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY) 301 302 /* 303 * done against open of /dev/crypto, to get a cloned descriptor. 304 * Please use F_SETFD against the cloned descriptor. 305 */ 306 #define CRIOGET _IOWR('c', 100, u_int32_t) 307 #define CRIOASYMFEAT CIOCASYMFEAT 308 #define CRIOFINDDEV CIOCFINDDEV 309 310 /* the following are done against the cloned descriptor */ 311 #define CIOCGSESSION _IOWR('c', 101, struct session_op) 312 #define CIOCFSESSION _IOW('c', 102, u_int32_t) 313 #define CIOCCRYPT _IOWR('c', 103, struct crypt_op) 314 #define CIOCKEY _IOWR('c', 104, struct crypt_kop) 315 #define CIOCASYMFEAT _IOR('c', 105, u_int32_t) 316 #define CIOCGSESSION2 _IOWR('c', 106, struct session2_op) 317 #define CIOCKEY2 _IOWR('c', 107, struct crypt_kop) 318 #define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op) 319 #define CIOCCRYPTAEAD _IOWR('c', 109, struct crypt_aead) 320 321 struct cryptotstat { 322 struct timespec acc; /* total accumulated time */ 323 struct timespec min; /* min time */ 324 struct timespec max; /* max time */ 325 u_int32_t count; /* number of observations */ 326 }; 327 328 struct cryptostats { 329 u_int32_t cs_ops; /* symmetric crypto ops submitted */ 330 u_int32_t cs_errs; /* symmetric crypto ops that failed */ 331 u_int32_t cs_kops; /* asymetric/key ops submitted */ 332 u_int32_t cs_kerrs; /* asymetric/key ops that failed */ 333 u_int32_t cs_intrs; /* crypto swi thread activations */ 334 u_int32_t cs_rets; /* crypto return thread activations */ 335 u_int32_t cs_blocks; /* symmetric op driver block */ 336 u_int32_t cs_kblocks; /* symmetric op driver block */ 337 /* 338 * When CRYPTO_TIMING is defined at compile time and the 339 * sysctl debug.crypto is set to 1, the crypto system will 340 * accumulate statistics about how long it takes to process 341 * crypto requests at various points during processing. 342 */ 343 struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */ 344 struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */ 345 struct cryptotstat cs_cb; /* crypto_done -> callback */ 346 struct cryptotstat cs_finis; /* callback -> callback return */ 347 }; 348 349 #ifdef _KERNEL 350 351 #if 0 352 #define CRYPTDEB(s) do { printf("%s:%d: %s\n", __FILE__, __LINE__, s); \ 353 } while (0) 354 #else 355 #define CRYPTDEB(s) do { } while (0) 356 #endif 357 358 /* Standard initialization structure beginning */ 359 struct cryptoini { 360 int cri_alg; /* Algorithm to use */ 361 int cri_klen; /* Key length, in bits */ 362 int cri_mlen; /* Number of bytes we want from the 363 entire hash. 0 means all. */ 364 caddr_t cri_key; /* key to use */ 365 u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */ 366 struct cryptoini *cri_next; 367 }; 368 369 /* Describe boundaries of a single crypto operation */ 370 struct cryptodesc { 371 int crd_skip; /* How many bytes to ignore from start */ 372 int crd_len; /* How many bytes to process */ 373 int crd_inject; /* Where to inject results, if applicable */ 374 int crd_flags; 375 376 #define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */ 377 #define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in 378 place, so don't copy. */ 379 #define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */ 380 #define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */ 381 #define CRD_F_COMP 0x0f /* Set when doing compression */ 382 #define CRD_F_KEY_EXPLICIT 0x10 /* Key explicitly provided */ 383 384 struct cryptoini CRD_INI; /* Initialization/context data */ 385 #define crd_esn CRD_INI.cri_esn 386 #define crd_iv CRD_INI.cri_iv 387 #define crd_key CRD_INI.cri_key 388 #define crd_alg CRD_INI.cri_alg 389 #define crd_klen CRD_INI.cri_klen 390 391 struct cryptodesc *crd_next; 392 }; 393 394 /* Structure describing complete operation */ 395 struct cryptop { 396 TAILQ_ENTRY(cryptop) crp_next; 397 398 u_int64_t crp_sid; /* Session ID */ 399 int crp_ilen; /* Input data total length */ 400 int crp_olen; /* Result total length */ 401 402 int crp_etype; /* 403 * Error type (zero means no error). 404 * All error codes except EAGAIN 405 * indicate possible data corruption (as in, 406 * the data have been touched). On all 407 * errors, the crp_sid may have changed 408 * (reset to a new one), so the caller 409 * should always check and use the new 410 * value on future requests. 411 */ 412 int crp_flags; 413 414 #define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains */ 415 #define CRYPTO_F_IOV 0x0002 /* Input/output are uio */ 416 #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */ 417 #define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */ 418 #define CRYPTO_F_DONE 0x0020 /* Operation completed */ 419 #define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */ 420 421 caddr_t crp_buf; /* Data to be processed */ 422 caddr_t crp_opaque; /* Opaque pointer, passed along */ 423 struct cryptodesc *crp_desc; /* Linked list of processing descriptors */ 424 425 int (*crp_callback)(struct cryptop *); /* Callback function */ 426 427 struct bintime crp_tstamp; /* performance time stamp */ 428 }; 429 430 #define CRYPTO_BUF_CONTIG 0x0 431 #define CRYPTO_BUF_IOV 0x1 432 #define CRYPTO_BUF_MBUF 0x2 433 434 #define CRYPTO_OP_DECRYPT 0x0 435 #define CRYPTO_OP_ENCRYPT 0x1 436 437 /* 438 * Hints passed to process methods. 439 */ 440 #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */ 441 442 struct cryptkop { 443 TAILQ_ENTRY(cryptkop) krp_next; 444 445 u_int krp_op; /* ie. CRK_MOD_EXP or other */ 446 u_int krp_status; /* return status */ 447 u_short krp_iparams; /* # of input parameters */ 448 u_short krp_oparams; /* # of output parameters */ 449 u_int krp_crid; /* desired device, etc. */ 450 u_int32_t krp_hid; 451 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */ 452 int (*krp_callback)(struct cryptkop *); 453 }; 454 455 /* 456 * Session ids are 64 bits. The lower 32 bits contain a "local id" which 457 * is a driver-private session identifier. The upper 32 bits contain a 458 * "hardware id" used by the core crypto code to identify the driver and 459 * a copy of the driver's capabilities that can be used by client code to 460 * optimize operation. 461 */ 462 #define CRYPTO_SESID2HID(_sid) (((_sid) >> 32) & 0x00ffffff) 463 #define CRYPTO_SESID2CAPS(_sid) (((_sid) >> 32) & 0xff000000) 464 #define CRYPTO_SESID2LID(_sid) (((u_int32_t) (_sid)) & 0xffffffff) 465 466 MALLOC_DECLARE(M_CRYPTO_DATA); 467 468 extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard); 469 extern int crypto_freesession(u_int64_t sid); 470 #define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE 471 #define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE 472 #define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */ 473 extern int32_t crypto_get_driverid(device_t dev, int flags); 474 extern int crypto_find_driver(const char *); 475 extern device_t crypto_find_device_byhid(int hid); 476 extern int crypto_getcaps(int hid); 477 extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen, 478 u_int32_t flags); 479 extern int crypto_kregister(u_int32_t, int, u_int32_t); 480 extern int crypto_unregister(u_int32_t driverid, int alg); 481 extern int crypto_unregister_all(u_int32_t driverid); 482 extern int crypto_dispatch(struct cryptop *crp); 483 extern int crypto_kdispatch(struct cryptkop *); 484 #define CRYPTO_SYMQ 0x1 485 #define CRYPTO_ASYMQ 0x2 486 extern int crypto_unblock(u_int32_t, int); 487 extern void crypto_done(struct cryptop *crp); 488 extern void crypto_kdone(struct cryptkop *); 489 extern int crypto_getfeat(int *); 490 491 extern void crypto_freereq(struct cryptop *crp); 492 extern struct cryptop *crypto_getreq(int num); 493 494 extern int crypto_usercrypto; /* userland may do crypto requests */ 495 extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */ 496 extern int crypto_devallowsoft; /* only use hardware crypto */ 497 498 /* 499 * Crypto-related utility routines used mainly by drivers. 500 * 501 * XXX these don't really belong here; but for now they're 502 * kept apart from the rest of the system. 503 */ 504 struct uio; 505 extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp); 506 extern void cuio_copyback(struct uio* uio, int off, int len, caddr_t cp); 507 extern int cuio_getptr(struct uio *uio, int loc, int *off); 508 extern int cuio_apply(struct uio *uio, int off, int len, 509 int (*f)(void *, void *, u_int), void *arg); 510 511 struct mbuf; 512 struct iovec; 513 extern int crypto_mbuftoiov(struct mbuf *mbuf, struct iovec **iovptr, 514 int *cnt, int *allocated); 515 516 extern void crypto_copyback(int flags, caddr_t buf, int off, int size, 517 caddr_t in); 518 extern void crypto_copydata(int flags, caddr_t buf, int off, int size, 519 caddr_t out); 520 extern int crypto_apply(int flags, caddr_t buf, int off, int len, 521 int (*f)(void *, void *, u_int), void *arg); 522 #endif /* _KERNEL */ 523 #endif /* _CRYPTO_CRYPTO_H_ */ 524