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_BLAKE2B 29 /* Blake2b hash */ 182 #define CRYPTO_BLAKE2S 30 /* Blake2s hash */ 183 #define CRYPTO_ALGORITHM_MAX 30 /* Keep updated - see below */ 184 185 #define CRYPTO_ALGO_VALID(x) ((x) >= CRYPTO_ALGORITHM_MIN && \ 186 (x) <= CRYPTO_ALGORITHM_MAX) 187 188 /* Algorithm flags */ 189 #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */ 190 #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */ 191 #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */ 192 193 /* 194 * Crypto driver/device flags. They can set in the crid 195 * parameter when creating a session or submitting a key 196 * op to affect the device/driver assigned. If neither 197 * of these are specified then the crid is assumed to hold 198 * the driver id of an existing (and suitable) device that 199 * must be used to satisfy the request. 200 */ 201 #define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */ 202 #define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */ 203 204 /* NB: deprecated */ 205 struct session_op { 206 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 207 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 208 209 u_int32_t keylen; /* cipher key */ 210 c_caddr_t key; 211 int mackeylen; /* mac key */ 212 c_caddr_t mackey; 213 214 u_int32_t ses; /* returns: session # */ 215 }; 216 217 struct session2_op { 218 u_int32_t cipher; /* ie. CRYPTO_DES_CBC */ 219 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */ 220 221 u_int32_t keylen; /* cipher key */ 222 c_caddr_t key; 223 int mackeylen; /* mac key */ 224 c_caddr_t mackey; 225 226 u_int32_t ses; /* returns: session # */ 227 int crid; /* driver id + flags (rw) */ 228 int pad[4]; /* for future expansion */ 229 }; 230 231 struct crypt_op { 232 u_int32_t ses; 233 u_int16_t op; /* i.e. COP_ENCRYPT */ 234 #define COP_ENCRYPT 1 235 #define COP_DECRYPT 2 236 u_int16_t flags; 237 #define COP_F_CIPHER_FIRST 0x0001 /* Cipher before MAC. */ 238 #define COP_F_BATCH 0x0008 /* Batch op if possible */ 239 u_int len; 240 c_caddr_t src; /* become iov[] inside kernel */ 241 caddr_t dst; 242 caddr_t mac; /* must be big enough for chosen MAC */ 243 c_caddr_t iv; 244 }; 245 246 /* op and flags the same as crypt_op */ 247 struct crypt_aead { 248 u_int32_t ses; 249 u_int16_t op; /* i.e. COP_ENCRYPT */ 250 u_int16_t flags; 251 u_int len; 252 u_int aadlen; 253 u_int ivlen; 254 c_caddr_t src; /* become iov[] inside kernel */ 255 caddr_t dst; 256 c_caddr_t aad; /* additional authenticated data */ 257 caddr_t tag; /* must fit for chosen TAG length */ 258 c_caddr_t iv; 259 }; 260 261 /* 262 * Parameters for looking up a crypto driver/device by 263 * device name or by id. The latter are returned for 264 * created sessions (crid) and completed key operations. 265 */ 266 struct crypt_find_op { 267 int crid; /* driver id + flags */ 268 char name[32]; /* device/driver name */ 269 }; 270 271 /* bignum parameter, in packed bytes, ... */ 272 struct crparam { 273 caddr_t crp_p; 274 u_int crp_nbits; 275 }; 276 277 #define CRK_MAXPARAM 8 278 279 struct crypt_kop { 280 u_int crk_op; /* ie. CRK_MOD_EXP or other */ 281 u_int crk_status; /* return status */ 282 u_short crk_iparams; /* # of input parameters */ 283 u_short crk_oparams; /* # of output parameters */ 284 u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */ 285 struct crparam crk_param[CRK_MAXPARAM]; 286 }; 287 #define CRK_ALGORITM_MIN 0 288 #define CRK_MOD_EXP 0 289 #define CRK_MOD_EXP_CRT 1 290 #define CRK_DSA_SIGN 2 291 #define CRK_DSA_VERIFY 3 292 #define CRK_DH_COMPUTE_KEY 4 293 #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */ 294 295 #define CRF_MOD_EXP (1 << CRK_MOD_EXP) 296 #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT) 297 #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN) 298 #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY) 299 #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY) 300 301 /* 302 * done against open of /dev/crypto, to get a cloned descriptor. 303 * Please use F_SETFD against the cloned descriptor. 304 */ 305 #define CRIOGET _IOWR('c', 100, u_int32_t) 306 #define CRIOASYMFEAT CIOCASYMFEAT 307 #define CRIOFINDDEV CIOCFINDDEV 308 309 /* the following are done against the cloned descriptor */ 310 #define CIOCGSESSION _IOWR('c', 101, struct session_op) 311 #define CIOCFSESSION _IOW('c', 102, u_int32_t) 312 #define CIOCCRYPT _IOWR('c', 103, struct crypt_op) 313 #define CIOCKEY _IOWR('c', 104, struct crypt_kop) 314 #define CIOCASYMFEAT _IOR('c', 105, u_int32_t) 315 #define CIOCGSESSION2 _IOWR('c', 106, struct session2_op) 316 #define CIOCKEY2 _IOWR('c', 107, struct crypt_kop) 317 #define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op) 318 #define CIOCCRYPTAEAD _IOWR('c', 109, struct crypt_aead) 319 320 struct cryptotstat { 321 struct timespec acc; /* total accumulated time */ 322 struct timespec min; /* min time */ 323 struct timespec max; /* max time */ 324 u_int32_t count; /* number of observations */ 325 }; 326 327 struct cryptostats { 328 u_int32_t cs_ops; /* symmetric crypto ops submitted */ 329 u_int32_t cs_errs; /* symmetric crypto ops that failed */ 330 u_int32_t cs_kops; /* asymetric/key ops submitted */ 331 u_int32_t cs_kerrs; /* asymetric/key ops that failed */ 332 u_int32_t cs_intrs; /* crypto swi thread activations */ 333 u_int32_t cs_rets; /* crypto return thread activations */ 334 u_int32_t cs_blocks; /* symmetric op driver block */ 335 u_int32_t cs_kblocks; /* symmetric op driver block */ 336 /* 337 * When CRYPTO_TIMING is defined at compile time and the 338 * sysctl debug.crypto is set to 1, the crypto system will 339 * accumulate statistics about how long it takes to process 340 * crypto requests at various points during processing. 341 */ 342 struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */ 343 struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */ 344 struct cryptotstat cs_cb; /* crypto_done -> callback */ 345 struct cryptotstat cs_finis; /* callback -> callback return */ 346 }; 347 348 #ifdef _KERNEL 349 350 #if 0 351 #define CRYPTDEB(s) do { printf("%s:%d: %s\n", __FILE__, __LINE__, s); \ 352 } while (0) 353 #else 354 #define CRYPTDEB(s) do { } while (0) 355 #endif 356 357 /* Standard initialization structure beginning */ 358 struct cryptoini { 359 int cri_alg; /* Algorithm to use */ 360 int cri_klen; /* Key length, in bits */ 361 int cri_mlen; /* Number of bytes we want from the 362 entire hash. 0 means all. */ 363 caddr_t cri_key; /* key to use */ 364 u_int8_t cri_iv[EALG_MAX_BLOCK_LEN]; /* IV to use */ 365 struct cryptoini *cri_next; 366 }; 367 368 /* Describe boundaries of a single crypto operation */ 369 struct cryptodesc { 370 int crd_skip; /* How many bytes to ignore from start */ 371 int crd_len; /* How many bytes to process */ 372 int crd_inject; /* Where to inject results, if applicable */ 373 int crd_flags; 374 375 #define CRD_F_ENCRYPT 0x01 /* Set when doing encryption */ 376 #define CRD_F_IV_PRESENT 0x02 /* When encrypting, IV is already in 377 place, so don't copy. */ 378 #define CRD_F_IV_EXPLICIT 0x04 /* IV explicitly provided */ 379 #define CRD_F_DSA_SHA_NEEDED 0x08 /* Compute SHA-1 of buffer for DSA */ 380 #define CRD_F_COMP 0x0f /* Set when doing compression */ 381 #define CRD_F_KEY_EXPLICIT 0x10 /* Key explicitly provided */ 382 383 struct cryptoini CRD_INI; /* Initialization/context data */ 384 #define crd_esn CRD_INI.cri_esn 385 #define crd_iv CRD_INI.cri_iv 386 #define crd_key CRD_INI.cri_key 387 #define crd_alg CRD_INI.cri_alg 388 #define crd_klen CRD_INI.cri_klen 389 390 struct cryptodesc *crd_next; 391 }; 392 393 /* Structure describing complete operation */ 394 struct cryptop { 395 TAILQ_ENTRY(cryptop) crp_next; 396 397 struct task crp_task; 398 399 u_int64_t crp_sid; /* Session ID */ 400 int crp_ilen; /* Input data total length */ 401 int crp_olen; /* Result total length */ 402 403 int crp_etype; /* 404 * Error type (zero means no error). 405 * All error codes except EAGAIN 406 * indicate possible data corruption (as in, 407 * the data have been touched). On all 408 * errors, the crp_sid may have changed 409 * (reset to a new one), so the caller 410 * should always check and use the new 411 * value on future requests. 412 */ 413 int crp_flags; 414 415 #define CRYPTO_F_IMBUF 0x0001 /* Input/output are mbuf chains */ 416 #define CRYPTO_F_IOV 0x0002 /* Input/output are uio */ 417 #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */ 418 #define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */ 419 #define CRYPTO_F_DONE 0x0020 /* Operation completed */ 420 #define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */ 421 #define CRYPTO_F_ASYNC 0x0080 /* Dispatch crypto jobs on several threads 422 * if op is synchronous 423 */ 424 #define CRYPTO_F_ASYNC_KEEPORDER 0x0100 /* 425 * Dispatch the crypto jobs in the same 426 * order there are submitted. Applied only 427 * if CRYPTO_F_ASYNC flags is set 428 */ 429 430 union { 431 caddr_t crp_buf; /* Data to be processed */ 432 struct mbuf *crp_mbuf; 433 struct uio *crp_uio; 434 }; 435 void * crp_opaque; /* Opaque pointer, passed along */ 436 struct cryptodesc *crp_desc; /* Linked list of processing descriptors */ 437 438 int (*crp_callback)(struct cryptop *); /* Callback function */ 439 440 struct bintime crp_tstamp; /* performance time stamp */ 441 uint32_t crp_seq; /* used for ordered dispatch */ 442 uint32_t crp_retw_id; /* 443 * the return worker to be used, 444 * used for ordered dispatch 445 */ 446 }; 447 448 #define CRYPTOP_ASYNC(crp) \ 449 (((crp)->crp_flags & CRYPTO_F_ASYNC) && \ 450 CRYPTO_SESID2CAPS((crp)->crp_sid) & CRYPTOCAP_F_SYNC) 451 #define CRYPTOP_ASYNC_KEEPORDER(crp) \ 452 (CRYPTOP_ASYNC(crp) && \ 453 (crp)->crp_flags & CRYPTO_F_ASYNC_KEEPORDER) 454 455 #define CRYPTO_BUF_CONTIG 0x0 456 #define CRYPTO_BUF_IOV 0x1 457 #define CRYPTO_BUF_MBUF 0x2 458 459 #define CRYPTO_OP_DECRYPT 0x0 460 #define CRYPTO_OP_ENCRYPT 0x1 461 462 /* 463 * Hints passed to process methods. 464 */ 465 #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */ 466 467 struct cryptkop { 468 TAILQ_ENTRY(cryptkop) krp_next; 469 470 u_int krp_op; /* ie. CRK_MOD_EXP or other */ 471 u_int krp_status; /* return status */ 472 u_short krp_iparams; /* # of input parameters */ 473 u_short krp_oparams; /* # of output parameters */ 474 u_int krp_crid; /* desired device, etc. */ 475 u_int32_t krp_hid; 476 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */ 477 int (*krp_callback)(struct cryptkop *); 478 }; 479 480 /* 481 * Session ids are 64 bits. The lower 32 bits contain a "local id" which 482 * is a driver-private session identifier. The upper 32 bits contain a 483 * "hardware id" used by the core crypto code to identify the driver and 484 * a copy of the driver's capabilities that can be used by client code to 485 * optimize operation. 486 */ 487 #define CRYPTO_SESID2HID(_sid) (((_sid) >> 32) & 0x00ffffff) 488 #define CRYPTO_SESID2CAPS(_sid) (((_sid) >> 32) & 0xff000000) 489 #define CRYPTO_SESID2LID(_sid) (((u_int32_t) (_sid)) & 0xffffffff) 490 491 MALLOC_DECLARE(M_CRYPTO_DATA); 492 493 extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard); 494 extern int crypto_freesession(u_int64_t sid); 495 #define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE 496 #define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE 497 #define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */ 498 extern int32_t crypto_get_driverid(device_t dev, int flags); 499 extern int crypto_find_driver(const char *); 500 extern device_t crypto_find_device_byhid(int hid); 501 extern int crypto_getcaps(int hid); 502 extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen, 503 u_int32_t flags); 504 extern int crypto_kregister(u_int32_t, int, u_int32_t); 505 extern int crypto_unregister(u_int32_t driverid, int alg); 506 extern int crypto_unregister_all(u_int32_t driverid); 507 extern int crypto_dispatch(struct cryptop *crp); 508 extern int crypto_kdispatch(struct cryptkop *); 509 #define CRYPTO_SYMQ 0x1 510 #define CRYPTO_ASYMQ 0x2 511 extern int crypto_unblock(u_int32_t, int); 512 extern void crypto_done(struct cryptop *crp); 513 extern void crypto_kdone(struct cryptkop *); 514 extern int crypto_getfeat(int *); 515 516 extern void crypto_freereq(struct cryptop *crp); 517 extern struct cryptop *crypto_getreq(int num); 518 519 extern int crypto_usercrypto; /* userland may do crypto requests */ 520 extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */ 521 extern int crypto_devallowsoft; /* only use hardware crypto */ 522 523 /* 524 * Crypto-related utility routines used mainly by drivers. 525 * 526 * XXX these don't really belong here; but for now they're 527 * kept apart from the rest of the system. 528 */ 529 struct uio; 530 extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp); 531 extern void cuio_copyback(struct uio* uio, int off, int len, c_caddr_t cp); 532 extern int cuio_getptr(struct uio *uio, int loc, int *off); 533 extern int cuio_apply(struct uio *uio, int off, int len, 534 int (*f)(void *, void *, u_int), void *arg); 535 536 struct mbuf; 537 struct iovec; 538 extern int crypto_mbuftoiov(struct mbuf *mbuf, struct iovec **iovptr, 539 int *cnt, int *allocated); 540 541 extern void crypto_copyback(int flags, caddr_t buf, int off, int size, 542 c_caddr_t in); 543 extern void crypto_copydata(int flags, caddr_t buf, int off, int size, 544 caddr_t out); 545 extern int crypto_apply(int flags, caddr_t buf, int off, int len, 546 int (*f)(void *, void *, u_int), void *arg); 547 548 #endif /* _KERNEL */ 549 #endif /* _CRYPTO_CRYPTO_H_ */ 550