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 /* Some initial values */ 69 #define CRYPTO_DRIVERS_INITIAL 4 70 #define CRYPTO_SW_SESSIONS 32 71 72 /* Hash values */ 73 #define NULL_HASH_LEN 16 74 #define MD5_HASH_LEN 16 75 #define SHA1_HASH_LEN 20 76 #define RIPEMD160_HASH_LEN 20 77 #define SHA2_256_HASH_LEN 32 78 #define SHA2_384_HASH_LEN 48 79 #define SHA2_512_HASH_LEN 64 80 #define MD5_KPDK_HASH_LEN 16 81 #define SHA1_KPDK_HASH_LEN 20 82 #define AES_GMAC_HASH_LEN 16 83 /* Maximum hash algorithm result length */ 84 #define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */ 85 86 /* HMAC values */ 87 #define NULL_HMAC_BLOCK_LEN 64 88 #define MD5_HMAC_BLOCK_LEN 64 89 #define SHA1_HMAC_BLOCK_LEN 64 90 #define RIPEMD160_HMAC_BLOCK_LEN 64 91 #define SHA2_256_HMAC_BLOCK_LEN 64 92 #define SHA2_384_HMAC_BLOCK_LEN 128 93 #define SHA2_512_HMAC_BLOCK_LEN 128 94 /* Maximum HMAC block length */ 95 #define HMAC_MAX_BLOCK_LEN SHA2_512_HMAC_BLOCK_LEN /* Keep this updated */ 96 #define HMAC_IPAD_VAL 0x36 97 #define HMAC_OPAD_VAL 0x5C 98 /* HMAC Key Length */ 99 #define AES_128_GMAC_KEY_LEN 16 100 #define AES_192_GMAC_KEY_LEN 24 101 #define AES_256_GMAC_KEY_LEN 32 102 103 /* Encryption algorithm block sizes */ 104 #define NULL_BLOCK_LEN 4 /* IPsec to maintain alignment */ 105 #define DES_BLOCK_LEN 8 106 #define DES3_BLOCK_LEN 8 107 #define BLOWFISH_BLOCK_LEN 8 108 #define SKIPJACK_BLOCK_LEN 8 109 #define CAST128_BLOCK_LEN 8 110 #define RIJNDAEL128_BLOCK_LEN 16 111 #define AES_BLOCK_LEN 16 112 #define AES_ICM_BLOCK_LEN 1 113 #define ARC4_BLOCK_LEN 1 114 #define CAMELLIA_BLOCK_LEN 16 115 #define EALG_MAX_BLOCK_LEN AES_BLOCK_LEN /* Keep this updated */ 116 117 /* IV Lengths */ 118 119 #define ARC4_IV_LEN 1 120 #define AES_GCM_IV_LEN 12 121 #define AES_XTS_IV_LEN 8 122 #define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */ 123 124 /* Min and Max Encryption Key Sizes */ 125 #define NULL_MIN_KEY 0 126 #define NULL_MAX_KEY 256 /* 2048 bits, max key */ 127 #define DES_MIN_KEY 8 128 #define DES_MAX_KEY DES_MIN_KEY 129 #define TRIPLE_DES_MIN_KEY 24 130 #define TRIPLE_DES_MAX_KEY TRIPLE_DES_MIN_KEY 131 #define BLOWFISH_MIN_KEY 5 132 #define BLOWFISH_MAX_KEY 56 /* 448 bits, max key */ 133 #define CAST_MIN_KEY 5 134 #define CAST_MAX_KEY 16 135 #define SKIPJACK_MIN_KEY 10 136 #define SKIPJACK_MAX_KEY SKIPJACK_MIN_KEY 137 #define RIJNDAEL_MIN_KEY 16 138 #define RIJNDAEL_MAX_KEY 32 139 #define AES_MIN_KEY RIJNDAEL_MIN_KEY 140 #define AES_MAX_KEY RIJNDAEL_MAX_KEY 141 #define AES_XTS_MIN_KEY (2 * AES_MIN_KEY) 142 #define AES_XTS_MAX_KEY (2 * AES_MAX_KEY) 143 #define ARC4_MIN_KEY 1 144 #define ARC4_MAX_KEY 32 145 #define CAMELLIA_MIN_KEY 8 146 #define CAMELLIA_MAX_KEY 32 147 148 /* Maximum hash algorithm result length */ 149 #define AALG_MAX_RESULT_LEN 64 /* Keep this updated */ 150 151 #define CRYPTO_ALGORITHM_MIN 1 152 #define CRYPTO_DES_CBC 1 153 #define CRYPTO_3DES_CBC 2 154 #define CRYPTO_BLF_CBC 3 155 #define CRYPTO_CAST_CBC 4 156 #define CRYPTO_SKIPJACK_CBC 5 157 #define CRYPTO_MD5_HMAC 6 158 #define CRYPTO_SHA1_HMAC 7 159 #define CRYPTO_RIPEMD160_HMAC 8 160 #define CRYPTO_MD5_KPDK 9 161 #define CRYPTO_SHA1_KPDK 10 162 #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */ 163 #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */ 164 #define CRYPTO_ARC4 12 165 #define CRYPTO_MD5 13 166 #define CRYPTO_SHA1 14 167 #define CRYPTO_NULL_HMAC 15 168 #define CRYPTO_NULL_CBC 16 169 #define CRYPTO_DEFLATE_COMP 17 /* Deflate compression algorithm */ 170 #define CRYPTO_SHA2_256_HMAC 18 171 #define CRYPTO_SHA2_384_HMAC 19 172 #define CRYPTO_SHA2_512_HMAC 20 173 #define CRYPTO_CAMELLIA_CBC 21 174 #define CRYPTO_AES_XTS 22 175 #define CRYPTO_AES_ICM 23 /* commonly known as CTR mode */ 176 #define CRYPTO_AES_NIST_GMAC 24 /* cipher side */ 177 #define CRYPTO_AES_NIST_GCM_16 25 /* 16 byte ICV */ 178 #define CRYPTO_AES_128_NIST_GMAC 26 /* auth side */ 179 #define CRYPTO_AES_192_NIST_GMAC 27 /* auth side */ 180 #define CRYPTO_AES_256_NIST_GMAC 28 /* auth side */ 181 #define CRYPTO_ALGORITHM_MAX 28 /* Keep updated - see below */ 182 183 #define CRYPTO_ALGO_VALID(x) ((x) >= CRYPTO_ALGORITHM_MIN && \ 184 (x) <= CRYPTO_ALGORITHM_MAX) 185 186 /* Algorithm flags */ 187 #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */ 188 #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */ 189 #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */ 190 191 /* 192 * Crypto driver/device flags. They can set in the crid 193 * parameter when creating a session or submitting a key 194 * op to affect the device/driver assigned. If neither 195 * of these are specified then the crid is assumed to hold 196 * the driver id of an existing (and suitable) device that 197 * must be used to satisfy the request. 198 */ 199 #define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */ 200 #define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */ 201 202 /* NB: deprecated */ 203 struct session_op { 204 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 205 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 206 207 u_int32_t keylen; /* cipher key */ 208 c_caddr_t key; 209 int mackeylen; /* mac key */ 210 c_caddr_t mackey; 211 212 u_int32_t ses; /* returns: session # */ 213 }; 214 215 struct session2_op { 216 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 217 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 218 219 u_int32_t keylen; /* cipher key */ 220 c_caddr_t key; 221 int mackeylen; /* mac key */ 222 c_caddr_t mackey; 223 224 u_int32_t ses; /* returns: session # */ 225 int crid; /* driver id + flags (rw) */ 226 int pad[4]; /* for future expansion */ 227 }; 228 229 struct crypt_op { 230 u_int32_t ses; 231 u_int16_t op; /* i.e. COP_ENCRYPT */ 232 #define COP_ENCRYPT 1 233 #define COP_DECRYPT 2 234 u_int16_t flags; 235 #define COP_F_CIPHER_FIRST 0x0001 /* Cipher before MAC. */ 236 #define COP_F_BATCH 0x0008 /* Batch op if possible */ 237 u_int len; 238 c_caddr_t src; /* become iov[] inside kernel */ 239 caddr_t dst; 240 caddr_t mac; /* must be big enough for chosen MAC */ 241 c_caddr_t iv; 242 }; 243 244 /* op and flags the same as crypt_op */ 245 struct crypt_aead { 246 u_int32_t ses; 247 u_int16_t op; /* i.e. COP_ENCRYPT */ 248 u_int16_t flags; 249 u_int len; 250 u_int aadlen; 251 u_int ivlen; 252 c_caddr_t src; /* become iov[] inside kernel */ 253 caddr_t dst; 254 c_caddr_t aad; /* additional authenticated data */ 255 caddr_t tag; /* must fit for chosen TAG length */ 256 c_caddr_t iv; 257 }; 258 259 /* 260 * Parameters for looking up a crypto driver/device by 261 * device name or by id. The latter are returned for 262 * created sessions (crid) and completed key operations. 263 */ 264 struct crypt_find_op { 265 int crid; /* driver id + flags */ 266 char name[32]; /* device/driver name */ 267 }; 268 269 /* bignum parameter, in packed bytes, ... */ 270 struct crparam { 271 caddr_t crp_p; 272 u_int crp_nbits; 273 }; 274 275 #define CRK_MAXPARAM 8 276 277 struct crypt_kop { 278 u_int crk_op; /* ie. CRK_MOD_EXP or other */ 279 u_int crk_status; /* return status */ 280 u_short crk_iparams; /* # of input parameters */ 281 u_short crk_oparams; /* # of output parameters */ 282 u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */ 283 struct crparam crk_param[CRK_MAXPARAM]; 284 }; 285 #define CRK_ALGORITM_MIN 0 286 #define CRK_MOD_EXP 0 287 #define CRK_MOD_EXP_CRT 1 288 #define CRK_DSA_SIGN 2 289 #define CRK_DSA_VERIFY 3 290 #define CRK_DH_COMPUTE_KEY 4 291 #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */ 292 293 #define CRF_MOD_EXP (1 << CRK_MOD_EXP) 294 #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT) 295 #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN) 296 #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY) 297 #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY) 298 299 /* 300 * done against open of /dev/crypto, to get a cloned descriptor. 301 * Please use F_SETFD against the cloned descriptor. 302 */ 303 #define CRIOGET _IOWR('c', 100, u_int32_t) 304 #define CRIOASYMFEAT CIOCASYMFEAT 305 #define CRIOFINDDEV CIOCFINDDEV 306 307 /* the following are done against the cloned descriptor */ 308 #define CIOCGSESSION _IOWR('c', 101, struct session_op) 309 #define CIOCFSESSION _IOW('c', 102, u_int32_t) 310 #define CIOCCRYPT _IOWR('c', 103, struct crypt_op) 311 #define CIOCKEY _IOWR('c', 104, struct crypt_kop) 312 #define CIOCASYMFEAT _IOR('c', 105, u_int32_t) 313 #define CIOCGSESSION2 _IOWR('c', 106, struct session2_op) 314 #define CIOCKEY2 _IOWR('c', 107, struct crypt_kop) 315 #define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op) 316 #define CIOCCRYPTAEAD _IOWR('c', 109, struct crypt_aead) 317 318 struct cryptotstat { 319 struct timespec acc; /* total accumulated time */ 320 struct timespec min; /* min time */ 321 struct timespec max; /* max time */ 322 u_int32_t count; /* number of observations */ 323 }; 324 325 struct cryptostats { 326 u_int32_t cs_ops; /* symmetric crypto ops submitted */ 327 u_int32_t cs_errs; /* symmetric crypto ops that failed */ 328 u_int32_t cs_kops; /* asymetric/key ops submitted */ 329 u_int32_t cs_kerrs; /* asymetric/key ops that failed */ 330 u_int32_t cs_intrs; /* crypto swi thread activations */ 331 u_int32_t cs_rets; /* crypto return thread activations */ 332 u_int32_t cs_blocks; /* symmetric op driver block */ 333 u_int32_t cs_kblocks; /* symmetric op driver block */ 334 /* 335 * When CRYPTO_TIMING is defined at compile time and the 336 * sysctl debug.crypto is set to 1, the crypto system will 337 * accumulate statistics about how long it takes to process 338 * crypto requests at various points during processing. 339 */ 340 struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */ 341 struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */ 342 struct cryptotstat cs_cb; /* crypto_done -> callback */ 343 struct cryptotstat cs_finis; /* callback -> callback return */ 344 }; 345 346 #ifdef _KERNEL 347 348 #if 0 349 #define CRYPTDEB(s) do { printf("%s:%d: %s\n", __FILE__, __LINE__, s); \ 350 } while (0) 351 #else 352 #define CRYPTDEB(s) do { } while (0) 353 #endif 354 355 /* Standard initialization structure beginning */ 356 struct cryptoini { 357 int cri_alg; /* Algorithm to use */ 358 int cri_klen; /* Key length, in bits */ 359 int cri_mlen; /* Number of bytes we want from the 360 entire hash. 0 means all. */ 361 caddr_t cri_key; /* key to use */ 362 u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */ 363 struct cryptoini *cri_next; 364 }; 365 366 /* Describe boundaries of a single crypto operation */ 367 struct cryptodesc { 368 int crd_skip; /* How many bytes to ignore from start */ 369 int crd_len; /* How many bytes to process */ 370 int crd_inject; /* Where to inject results, if applicable */ 371 int crd_flags; 372 373 #define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */ 374 #define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in 375 place, so don't copy. */ 376 #define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */ 377 #define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */ 378 #define CRD_F_COMP 0x0f /* Set when doing compression */ 379 #define CRD_F_KEY_EXPLICIT 0x10 /* Key explicitly provided */ 380 381 struct cryptoini CRD_INI; /* Initialization/context data */ 382 #define crd_esn CRD_INI.cri_esn 383 #define crd_iv CRD_INI.cri_iv 384 #define crd_key CRD_INI.cri_key 385 #define crd_alg CRD_INI.cri_alg 386 #define crd_klen CRD_INI.cri_klen 387 388 struct cryptodesc *crd_next; 389 }; 390 391 /* Structure describing complete operation */ 392 struct cryptop { 393 TAILQ_ENTRY(cryptop) crp_next; 394 395 struct task crp_task; 396 397 u_int64_t crp_sid; /* Session ID */ 398 int crp_ilen; /* Input data total length */ 399 int crp_olen; /* Result total length */ 400 401 int crp_etype; /* 402 * Error type (zero means no error). 403 * All error codes except EAGAIN 404 * indicate possible data corruption (as in, 405 * the data have been touched). On all 406 * errors, the crp_sid may have changed 407 * (reset to a new one), so the caller 408 * should always check and use the new 409 * value on future requests. 410 */ 411 int crp_flags; 412 413 #define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains */ 414 #define CRYPTO_F_IOV 0x0002 /* Input/output are uio */ 415 #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */ 416 #define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */ 417 #define CRYPTO_F_DONE 0x0020 /* Operation completed */ 418 #define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */ 419 #define CRYPTO_F_ASYNC 0x0080 /* Dispatch crypto jobs on several threads 420 * if op is synchronous 421 */ 422 #define CRYPTO_F_ASYNC_KEEPORDER 0x0100 /* 423 * Dispatch the crypto jobs in the same 424 * order there are submitted. Applied only 425 * if CRYPTO_F_ASYNC flags is set 426 */ 427 428 union { 429 caddr_t crp_buf; /* Data to be processed */ 430 struct mbuf *crp_mbuf; 431 struct uio *crp_uio; 432 }; 433 void * crp_opaque; /* Opaque pointer, passed along */ 434 struct cryptodesc *crp_desc; /* Linked list of processing descriptors */ 435 436 int (*crp_callback)(struct cryptop *); /* Callback function */ 437 438 struct bintime crp_tstamp; /* performance time stamp */ 439 uint32_t crp_seq; /* used for ordered dispatch */ 440 uint32_t crp_retw_id; /* 441 * the return worker to be used, 442 * used for ordered dispatch 443 */ 444 }; 445 446 #define CRYPTOP_ASYNC(crp) \ 447 (((crp)->crp_flags & CRYPTO_F_ASYNC) && \ 448 CRYPTO_SESID2CAPS((crp)->crp_sid) & CRYPTOCAP_F_SYNC) 449 #define CRYPTOP_ASYNC_KEEPORDER(crp) \ 450 (CRYPTOP_ASYNC(crp) && \ 451 (crp)->crp_flags & CRYPTO_F_ASYNC_KEEPORDER) 452 453 #define CRYPTO_BUF_CONTIG 0x0 454 #define CRYPTO_BUF_IOV 0x1 455 #define CRYPTO_BUF_MBUF 0x2 456 457 #define CRYPTO_OP_DECRYPT 0x0 458 #define CRYPTO_OP_ENCRYPT 0x1 459 460 /* 461 * Hints passed to process methods. 462 */ 463 #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */ 464 465 struct cryptkop { 466 TAILQ_ENTRY(cryptkop) krp_next; 467 468 u_int krp_op; /* ie. CRK_MOD_EXP or other */ 469 u_int krp_status; /* return status */ 470 u_short krp_iparams; /* # of input parameters */ 471 u_short krp_oparams; /* # of output parameters */ 472 u_int krp_crid; /* desired device, etc. */ 473 u_int32_t krp_hid; 474 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */ 475 int (*krp_callback)(struct cryptkop *); 476 }; 477 478 /* 479 * Session ids are 64 bits. The lower 32 bits contain a "local id" which 480 * is a driver-private session identifier. The upper 32 bits contain a 481 * "hardware id" used by the core crypto code to identify the driver and 482 * a copy of the driver's capabilities that can be used by client code to 483 * optimize operation. 484 */ 485 #define CRYPTO_SESID2HID(_sid) (((_sid) >> 32) & 0x00ffffff) 486 #define CRYPTO_SESID2CAPS(_sid) (((_sid) >> 32) & 0xff000000) 487 #define CRYPTO_SESID2LID(_sid) (((u_int32_t) (_sid)) & 0xffffffff) 488 489 MALLOC_DECLARE(M_CRYPTO_DATA); 490 491 extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard); 492 extern int crypto_freesession(u_int64_t sid); 493 #define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE 494 #define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE 495 #define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */ 496 extern int32_t crypto_get_driverid(device_t dev, int flags); 497 extern int crypto_find_driver(const char *); 498 extern device_t crypto_find_device_byhid(int hid); 499 extern int crypto_getcaps(int hid); 500 extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen, 501 u_int32_t flags); 502 extern int crypto_kregister(u_int32_t, int, u_int32_t); 503 extern int crypto_unregister(u_int32_t driverid, int alg); 504 extern int crypto_unregister_all(u_int32_t driverid); 505 extern int crypto_dispatch(struct cryptop *crp); 506 extern int crypto_kdispatch(struct cryptkop *); 507 #define CRYPTO_SYMQ 0x1 508 #define CRYPTO_ASYMQ 0x2 509 extern int crypto_unblock(u_int32_t, int); 510 extern void crypto_done(struct cryptop *crp); 511 extern void crypto_kdone(struct cryptkop *); 512 extern int crypto_getfeat(int *); 513 514 extern void crypto_freereq(struct cryptop *crp); 515 extern struct cryptop *crypto_getreq(int num); 516 517 extern int crypto_usercrypto; /* userland may do crypto requests */ 518 extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */ 519 extern int crypto_devallowsoft; /* only use hardware crypto */ 520 521 /* 522 * Crypto-related utility routines used mainly by drivers. 523 * 524 * XXX these don't really belong here; but for now they're 525 * kept apart from the rest of the system. 526 */ 527 struct uio; 528 extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp); 529 extern void cuio_copyback(struct uio* uio, int off, int len, c_caddr_t cp); 530 extern int cuio_getptr(struct uio *uio, int loc, int *off); 531 extern int cuio_apply(struct uio *uio, int off, int len, 532 int (*f)(void *, void *, u_int), void *arg); 533 534 struct mbuf; 535 struct iovec; 536 extern int crypto_mbuftoiov(struct mbuf *mbuf, struct iovec **iovptr, 537 int *cnt, int *allocated); 538 539 extern void crypto_copyback(int flags, caddr_t buf, int off, int size, 540 c_caddr_t in); 541 extern void crypto_copydata(int flags, caddr_t buf, int off, int size, 542 caddr_t out); 543 extern int crypto_apply(int flags, caddr_t buf, int off, int len, 544 int (*f)(void *, void *, u_int), void *arg); 545 546 #endif /* _KERNEL */ 547 #endif /* _CRYPTO_CRYPTO_H_ */ 548