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