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 #include <sys/_task.h> 67 68 #ifdef _KERNEL 69 #include <opencrypto/_cryptodev.h> 70 #endif 71 72 /* Some initial values */ 73 #define CRYPTO_DRIVERS_INITIAL 4 74 #define CRYPTO_SW_SESSIONS 32 75 76 /* Hash values */ 77 #define NULL_HASH_LEN 16 78 #define MD5_HASH_LEN 16 79 #define SHA1_HASH_LEN 20 80 #define RIPEMD160_HASH_LEN 20 81 #define SHA2_224_HASH_LEN 28 82 #define SHA2_256_HASH_LEN 32 83 #define SHA2_384_HASH_LEN 48 84 #define SHA2_512_HASH_LEN 64 85 #define MD5_KPDK_HASH_LEN 16 86 #define SHA1_KPDK_HASH_LEN 20 87 #define AES_GMAC_HASH_LEN 16 88 /* Maximum hash algorithm result length */ 89 #define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */ 90 91 #define MD5_BLOCK_LEN 64 92 #define SHA1_BLOCK_LEN 64 93 #define RIPEMD160_BLOCK_LEN 64 94 #define SHA2_224_BLOCK_LEN 64 95 #define SHA2_256_BLOCK_LEN 64 96 #define SHA2_384_BLOCK_LEN 128 97 #define SHA2_512_BLOCK_LEN 128 98 99 /* HMAC values */ 100 #define NULL_HMAC_BLOCK_LEN 64 101 /* Maximum HMAC block length */ 102 #define HMAC_MAX_BLOCK_LEN SHA2_512_BLOCK_LEN /* Keep this updated */ 103 #define HMAC_IPAD_VAL 0x36 104 #define HMAC_OPAD_VAL 0x5C 105 /* HMAC Key Length */ 106 #define AES_128_GMAC_KEY_LEN 16 107 #define AES_192_GMAC_KEY_LEN 24 108 #define AES_256_GMAC_KEY_LEN 32 109 110 /* Encryption algorithm block sizes */ 111 #define NULL_BLOCK_LEN 4 /* IPsec to maintain alignment */ 112 #define DES_BLOCK_LEN 8 113 #define DES3_BLOCK_LEN 8 114 #define BLOWFISH_BLOCK_LEN 8 115 #define SKIPJACK_BLOCK_LEN 8 116 #define CAST128_BLOCK_LEN 8 117 #define RIJNDAEL128_BLOCK_LEN 16 118 #define AES_BLOCK_LEN 16 119 #define AES_ICM_BLOCK_LEN 1 120 #define ARC4_BLOCK_LEN 1 121 #define CAMELLIA_BLOCK_LEN 16 122 #define CHACHA20_NATIVE_BLOCK_LEN 64 123 #define EALG_MAX_BLOCK_LEN CHACHA20_NATIVE_BLOCK_LEN /* Keep this updated */ 124 125 /* IV Lengths */ 126 127 #define ARC4_IV_LEN 1 128 #define AES_GCM_IV_LEN 12 129 #define AES_XTS_IV_LEN 8 130 #define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */ 131 132 /* Min and Max Encryption Key Sizes */ 133 #define NULL_MIN_KEY 0 134 #define NULL_MAX_KEY 256 /* 2048 bits, max key */ 135 #define DES_MIN_KEY 8 136 #define DES_MAX_KEY DES_MIN_KEY 137 #define TRIPLE_DES_MIN_KEY 24 138 #define TRIPLE_DES_MAX_KEY TRIPLE_DES_MIN_KEY 139 #define BLOWFISH_MIN_KEY 5 140 #define BLOWFISH_MAX_KEY 56 /* 448 bits, max key */ 141 #define CAST_MIN_KEY 5 142 #define CAST_MAX_KEY 16 143 #define SKIPJACK_MIN_KEY 10 144 #define SKIPJACK_MAX_KEY SKIPJACK_MIN_KEY 145 #define RIJNDAEL_MIN_KEY 16 146 #define RIJNDAEL_MAX_KEY 32 147 #define AES_MIN_KEY RIJNDAEL_MIN_KEY 148 #define AES_MAX_KEY RIJNDAEL_MAX_KEY 149 #define AES_XTS_MIN_KEY (2 * AES_MIN_KEY) 150 #define AES_XTS_MAX_KEY (2 * AES_MAX_KEY) 151 #define ARC4_MIN_KEY 1 152 #define ARC4_MAX_KEY 32 153 #define CAMELLIA_MIN_KEY 8 154 #define CAMELLIA_MAX_KEY 32 155 156 /* Maximum hash algorithm result length */ 157 #define AALG_MAX_RESULT_LEN 64 /* Keep this updated */ 158 159 #define CRYPTO_ALGORITHM_MIN 1 160 #define CRYPTO_DES_CBC 1 161 #define CRYPTO_3DES_CBC 2 162 #define CRYPTO_BLF_CBC 3 163 #define CRYPTO_CAST_CBC 4 164 #define CRYPTO_SKIPJACK_CBC 5 165 #define CRYPTO_MD5_HMAC 6 166 #define CRYPTO_SHA1_HMAC 7 167 #define CRYPTO_RIPEMD160_HMAC 8 168 #define CRYPTO_MD5_KPDK 9 169 #define CRYPTO_SHA1_KPDK 10 170 #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */ 171 #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */ 172 #define CRYPTO_ARC4 12 173 #define CRYPTO_MD5 13 174 #define CRYPTO_SHA1 14 175 #define CRYPTO_NULL_HMAC 15 176 #define CRYPTO_NULL_CBC 16 177 #define CRYPTO_DEFLATE_COMP 17 /* Deflate compression algorithm */ 178 #define CRYPTO_SHA2_256_HMAC 18 179 #define CRYPTO_SHA2_384_HMAC 19 180 #define CRYPTO_SHA2_512_HMAC 20 181 #define CRYPTO_CAMELLIA_CBC 21 182 #define CRYPTO_AES_XTS 22 183 #define CRYPTO_AES_ICM 23 /* commonly known as CTR mode */ 184 #define CRYPTO_AES_NIST_GMAC 24 /* cipher side */ 185 #define CRYPTO_AES_NIST_GCM_16 25 /* 16 byte ICV */ 186 #define CRYPTO_AES_128_NIST_GMAC 26 /* auth side */ 187 #define CRYPTO_AES_192_NIST_GMAC 27 /* auth side */ 188 #define CRYPTO_AES_256_NIST_GMAC 28 /* auth side */ 189 #define CRYPTO_BLAKE2B 29 /* Blake2b hash */ 190 #define CRYPTO_BLAKE2S 30 /* Blake2s hash */ 191 #define CRYPTO_CHACHA20 31 /* Chacha20 stream cipher */ 192 #define CRYPTO_SHA2_224_HMAC 32 193 #define CRYPTO_RIPEMD160 33 194 #define CRYPTO_SHA2_224 34 195 #define CRYPTO_SHA2_256 35 196 #define CRYPTO_SHA2_384 36 197 #define CRYPTO_SHA2_512 37 198 #define CRYPTO_ALGORITHM_MAX 37 /* Keep updated - see below */ 199 200 #define CRYPTO_ALGO_VALID(x) ((x) >= CRYPTO_ALGORITHM_MIN && \ 201 (x) <= CRYPTO_ALGORITHM_MAX) 202 203 /* Algorithm flags */ 204 #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */ 205 #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */ 206 #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */ 207 208 /* 209 * Crypto driver/device flags. They can set in the crid 210 * parameter when creating a session or submitting a key 211 * op to affect the device/driver assigned. If neither 212 * of these are specified then the crid is assumed to hold 213 * the driver id of an existing (and suitable) device that 214 * must be used to satisfy the request. 215 */ 216 #define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */ 217 #define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */ 218 219 /* NB: deprecated */ 220 struct session_op { 221 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 222 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 223 224 u_int32_t keylen; /* cipher key */ 225 c_caddr_t key; 226 int mackeylen; /* mac key */ 227 c_caddr_t mackey; 228 229 u_int32_t ses; /* returns: session # */ 230 }; 231 232 /* 233 * session and crypt _op structs are used by userspace programs to interact 234 * with /dev/crypto. Confusingly, the internal kernel interface is named 235 * "cryptop" (no underscore). 236 */ 237 struct session2_op { 238 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 239 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 240 241 u_int32_t keylen; /* cipher key */ 242 c_caddr_t key; 243 int mackeylen; /* mac key */ 244 c_caddr_t mackey; 245 246 u_int32_t ses; /* returns: session # */ 247 int crid; /* driver id + flags (rw) */ 248 int pad[4]; /* for future expansion */ 249 }; 250 251 struct crypt_op { 252 u_int32_t ses; 253 u_int16_t op; /* i.e. COP_ENCRYPT */ 254 #define COP_ENCRYPT 1 255 #define COP_DECRYPT 2 256 u_int16_t flags; 257 #define COP_F_CIPHER_FIRST 0x0001 /* Cipher before MAC. */ 258 #define COP_F_BATCH 0x0008 /* Batch op if possible */ 259 u_int len; 260 c_caddr_t src; /* become iov[] inside kernel */ 261 caddr_t dst; 262 caddr_t mac; /* must be big enough for chosen MAC */ 263 c_caddr_t iv; 264 }; 265 266 /* op and flags the same as crypt_op */ 267 struct crypt_aead { 268 u_int32_t ses; 269 u_int16_t op; /* i.e. COP_ENCRYPT */ 270 u_int16_t flags; 271 u_int len; 272 u_int aadlen; 273 u_int ivlen; 274 c_caddr_t src; /* become iov[] inside kernel */ 275 caddr_t dst; 276 c_caddr_t aad; /* additional authenticated data */ 277 caddr_t tag; /* must fit for chosen TAG length */ 278 c_caddr_t iv; 279 }; 280 281 /* 282 * Parameters for looking up a crypto driver/device by 283 * device name or by id. The latter are returned for 284 * created sessions (crid) and completed key operations. 285 */ 286 struct crypt_find_op { 287 int crid; /* driver id + flags */ 288 char name[32]; /* device/driver name */ 289 }; 290 291 /* bignum parameter, in packed bytes, ... */ 292 struct crparam { 293 caddr_t crp_p; 294 u_int crp_nbits; 295 }; 296 297 #define CRK_MAXPARAM 8 298 299 struct crypt_kop { 300 u_int crk_op; /* ie. CRK_MOD_EXP or other */ 301 u_int crk_status; /* return status */ 302 u_short crk_iparams; /* # of input parameters */ 303 u_short crk_oparams; /* # of output parameters */ 304 u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */ 305 struct crparam crk_param[CRK_MAXPARAM]; 306 }; 307 #define CRK_ALGORITM_MIN 0 308 #define CRK_MOD_EXP 0 309 #define CRK_MOD_EXP_CRT 1 310 #define CRK_DSA_SIGN 2 311 #define CRK_DSA_VERIFY 3 312 #define CRK_DH_COMPUTE_KEY 4 313 #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */ 314 315 #define CRF_MOD_EXP (1 << CRK_MOD_EXP) 316 #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT) 317 #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN) 318 #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY) 319 #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY) 320 321 /* 322 * done against open of /dev/crypto, to get a cloned descriptor. 323 * Please use F_SETFD against the cloned descriptor. 324 */ 325 #define CRIOGET _IOWR('c', 100, u_int32_t) 326 #define CRIOASYMFEAT CIOCASYMFEAT 327 #define CRIOFINDDEV CIOCFINDDEV 328 329 /* the following are done against the cloned descriptor */ 330 #define CIOCGSESSION _IOWR('c', 101, struct session_op) 331 #define CIOCFSESSION _IOW('c', 102, u_int32_t) 332 #define CIOCCRYPT _IOWR('c', 103, struct crypt_op) 333 #define CIOCKEY _IOWR('c', 104, struct crypt_kop) 334 #define CIOCASYMFEAT _IOR('c', 105, u_int32_t) 335 #define CIOCGSESSION2 _IOWR('c', 106, struct session2_op) 336 #define CIOCKEY2 _IOWR('c', 107, struct crypt_kop) 337 #define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op) 338 #define CIOCCRYPTAEAD _IOWR('c', 109, struct crypt_aead) 339 340 struct cryptotstat { 341 struct timespec acc; /* total accumulated time */ 342 struct timespec min; /* min time */ 343 struct timespec max; /* max time */ 344 u_int32_t count; /* number of observations */ 345 }; 346 347 struct cryptostats { 348 u_int32_t cs_ops; /* symmetric crypto ops submitted */ 349 u_int32_t cs_errs; /* symmetric crypto ops that failed */ 350 u_int32_t cs_kops; /* asymetric/key ops submitted */ 351 u_int32_t cs_kerrs; /* asymetric/key ops that failed */ 352 u_int32_t cs_intrs; /* crypto swi thread activations */ 353 u_int32_t cs_rets; /* crypto return thread activations */ 354 u_int32_t cs_blocks; /* symmetric op driver block */ 355 u_int32_t cs_kblocks; /* symmetric op driver block */ 356 /* 357 * When CRYPTO_TIMING is defined at compile time and the 358 * sysctl debug.crypto is set to 1, the crypto system will 359 * accumulate statistics about how long it takes to process 360 * crypto requests at various points during processing. 361 */ 362 struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */ 363 struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */ 364 struct cryptotstat cs_cb; /* crypto_done -> callback */ 365 struct cryptotstat cs_finis; /* callback -> callback return */ 366 }; 367 368 #ifdef _KERNEL 369 370 #if 0 371 #define CRYPTDEB(s, ...) do { \ 372 printf("%s:%d: " s "\n", __FILE__, __LINE__, ## __VA_ARGS__); \ 373 } while (0) 374 #else 375 #define CRYPTDEB(...) do { } while (0) 376 #endif 377 378 /* Standard initialization structure beginning */ 379 struct cryptoini { 380 int cri_alg; /* Algorithm to use */ 381 int cri_klen; /* Key length, in bits */ 382 int cri_mlen; /* Number of bytes we want from the 383 entire hash. 0 means all. */ 384 caddr_t cri_key; /* key to use */ 385 u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */ 386 struct cryptoini *cri_next; 387 }; 388 389 /* Describe boundaries of a single crypto operation */ 390 struct cryptodesc { 391 int crd_skip; /* How many bytes to ignore from start */ 392 int crd_len; /* How many bytes to process */ 393 int crd_inject; /* Where to inject results, if applicable */ 394 int crd_flags; 395 396 #define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */ 397 #define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in 398 place, so don't copy. */ 399 #define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */ 400 #define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */ 401 #define CRD_F_COMP 0x0f /* Set when doing compression */ 402 #define CRD_F_KEY_EXPLICIT 0x10 /* Key explicitly provided */ 403 404 struct cryptoini CRD_INI; /* Initialization/context data */ 405 #define crd_esn CRD_INI.cri_esn 406 #define crd_iv CRD_INI.cri_iv 407 #define crd_key CRD_INI.cri_key 408 #define crd_alg CRD_INI.cri_alg 409 #define crd_klen CRD_INI.cri_klen 410 411 struct cryptodesc *crd_next; 412 }; 413 414 /* Structure describing complete operation */ 415 struct cryptop { 416 TAILQ_ENTRY(cryptop) crp_next; 417 418 struct task crp_task; 419 420 crypto_session_t crp_session; /* Session */ 421 int crp_ilen; /* Input data total length */ 422 int crp_olen; /* Result total length */ 423 424 int crp_etype; /* 425 * Error type (zero means no error). 426 * All error codes except EAGAIN 427 * indicate possible data corruption (as in, 428 * the data have been touched). On all 429 * errors, the crp_session may have changed 430 * (reset to a new one), so the caller 431 * should always check and use the new 432 * value on future requests. 433 */ 434 int crp_flags; 435 436 #define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains */ 437 #define CRYPTO_F_IOV 0x0002 /* Input/output are uio */ 438 #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */ 439 #define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */ 440 #define CRYPTO_F_DONE 0x0020 /* Operation completed */ 441 #define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */ 442 #define CRYPTO_F_ASYNC 0x0080 /* Dispatch crypto jobs on several threads 443 * if op is synchronous 444 */ 445 #define CRYPTO_F_ASYNC_KEEPORDER 0x0100 /* 446 * Dispatch the crypto jobs in the same 447 * order there are submitted. Applied only 448 * if CRYPTO_F_ASYNC flags is set 449 */ 450 451 union { 452 caddr_t crp_buf; /* Data to be processed */ 453 struct mbuf *crp_mbuf; 454 struct uio *crp_uio; 455 }; 456 void * crp_opaque; /* Opaque pointer, passed along */ 457 struct cryptodesc *crp_desc; /* Linked list of processing descriptors */ 458 459 int (*crp_callback)(struct cryptop *); /* Callback function */ 460 461 struct bintime crp_tstamp; /* performance time stamp */ 462 uint32_t crp_seq; /* used for ordered dispatch */ 463 uint32_t crp_retw_id; /* 464 * the return worker to be used, 465 * used for ordered dispatch 466 */ 467 }; 468 469 #define CRYPTOP_ASYNC(crp) \ 470 (((crp)->crp_flags & CRYPTO_F_ASYNC) && \ 471 crypto_ses2caps((crp)->crp_session) & CRYPTOCAP_F_SYNC) 472 #define CRYPTOP_ASYNC_KEEPORDER(crp) \ 473 (CRYPTOP_ASYNC(crp) && \ 474 (crp)->crp_flags & CRYPTO_F_ASYNC_KEEPORDER) 475 476 #define CRYPTO_BUF_CONTIG 0x0 477 #define CRYPTO_BUF_IOV 0x1 478 #define CRYPTO_BUF_MBUF 0x2 479 480 #define CRYPTO_OP_DECRYPT 0x0 481 #define CRYPTO_OP_ENCRYPT 0x1 482 483 /* 484 * Hints passed to process methods. 485 */ 486 #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */ 487 488 struct cryptkop { 489 TAILQ_ENTRY(cryptkop) krp_next; 490 491 u_int krp_op; /* ie. CRK_MOD_EXP or other */ 492 u_int krp_status; /* return status */ 493 u_short krp_iparams; /* # of input parameters */ 494 u_short krp_oparams; /* # of output parameters */ 495 u_int krp_crid; /* desired device, etc. */ 496 u_int32_t krp_hid; 497 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */ 498 int (*krp_callback)(struct cryptkop *); 499 }; 500 501 uint32_t crypto_ses2hid(crypto_session_t crypto_session); 502 uint32_t crypto_ses2caps(crypto_session_t crypto_session); 503 void *crypto_get_driver_session(crypto_session_t crypto_session); 504 505 MALLOC_DECLARE(M_CRYPTO_DATA); 506 507 extern int crypto_newsession(crypto_session_t *cses, struct cryptoini *cri, int hard); 508 extern void crypto_freesession(crypto_session_t cses); 509 #define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE 510 #define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE 511 #define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */ 512 extern int32_t crypto_get_driverid(device_t dev, size_t session_size, 513 int flags); 514 extern int crypto_find_driver(const char *); 515 extern device_t crypto_find_device_byhid(int hid); 516 extern int crypto_getcaps(int hid); 517 extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen, 518 u_int32_t flags); 519 extern int crypto_kregister(u_int32_t, int, u_int32_t); 520 extern int crypto_unregister(u_int32_t driverid, int alg); 521 extern int crypto_unregister_all(u_int32_t driverid); 522 extern int crypto_dispatch(struct cryptop *crp); 523 extern int crypto_kdispatch(struct cryptkop *); 524 #define CRYPTO_SYMQ 0x1 525 #define CRYPTO_ASYMQ 0x2 526 extern int crypto_unblock(u_int32_t, int); 527 extern void crypto_done(struct cryptop *crp); 528 extern void crypto_kdone(struct cryptkop *); 529 extern int crypto_getfeat(int *); 530 531 extern void crypto_freereq(struct cryptop *crp); 532 extern struct cryptop *crypto_getreq(int num); 533 534 extern int crypto_usercrypto; /* userland may do crypto requests */ 535 extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */ 536 extern int crypto_devallowsoft; /* only use hardware crypto */ 537 538 /* 539 * Crypto-related utility routines used mainly by drivers. 540 * 541 * XXX these don't really belong here; but for now they're 542 * kept apart from the rest of the system. 543 */ 544 struct uio; 545 extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp); 546 extern void cuio_copyback(struct uio* uio, int off, int len, c_caddr_t cp); 547 extern int cuio_getptr(struct uio *uio, int loc, int *off); 548 extern int cuio_apply(struct uio *uio, int off, int len, 549 int (*f)(void *, void *, u_int), void *arg); 550 551 struct mbuf; 552 struct iovec; 553 extern int crypto_mbuftoiov(struct mbuf *mbuf, struct iovec **iovptr, 554 int *cnt, int *allocated); 555 556 extern void crypto_copyback(int flags, caddr_t buf, int off, int size, 557 c_caddr_t in); 558 extern void crypto_copydata(int flags, caddr_t buf, int off, int size, 559 caddr_t out); 560 extern int crypto_apply(int flags, caddr_t buf, int off, int len, 561 int (*f)(void *, void *, u_int), void *arg); 562 563 #endif /* _KERNEL */ 564 #endif /* _CRYPTO_CRYPTO_H_ */ 565