1/* $FreeBSD: releng/11.0/sys/opencrypto/cryptodev.h 286292 2015-08-04 17:47:11Z jmg $ */ 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 */ 209struct 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 221struct 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 235struct 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 */ 249struct 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 */ 267struct crypt_find_op { 268 int crid; /* driver id + flags */ 269 char name[32]; /* device/driver name */ 270}; 271 272/* bignum parameter, in packed bytes, ... */ 273struct crparam { 274 caddr_t crp_p; 275 u_int crp_nbits; 276}; 277 278#define CRK_MAXPARAM 8 279 280struct 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 321struct 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 328struct 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 */ 359struct 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 */ 370struct 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 */ 395struct 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 442struct 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 466MALLOC_DECLARE(M_CRYPTO_DATA); 467 468extern int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard); 469extern 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 */ 473extern int32_t crypto_get_driverid(device_t dev, int flags); 474extern int crypto_find_driver(const char *); 475extern device_t crypto_find_device_byhid(int hid); 476extern int crypto_getcaps(int hid); 477extern int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen, 478 u_int32_t flags); 479extern int crypto_kregister(u_int32_t, int, u_int32_t); 480extern int crypto_unregister(u_int32_t driverid, int alg); 481extern int crypto_unregister_all(u_int32_t driverid); 482extern int crypto_dispatch(struct cryptop *crp); 483extern int crypto_kdispatch(struct cryptkop *); 484#define CRYPTO_SYMQ 0x1 485#define CRYPTO_ASYMQ 0x2 486extern int crypto_unblock(u_int32_t, int); 487extern void crypto_done(struct cryptop *crp); 488extern void crypto_kdone(struct cryptkop *); 489extern int crypto_getfeat(int *); 490 491extern void crypto_freereq(struct cryptop *crp); 492extern struct cryptop *crypto_getreq(int num); 493 494extern int crypto_usercrypto; /* userland may do crypto requests */ 495extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */ 496extern 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 */ 504struct uio; 505extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp); 506extern void cuio_copyback(struct uio* uio, int off, int len, caddr_t cp); 507extern int cuio_getptr(struct uio *uio, int loc, int *off); 508extern int cuio_apply(struct uio *uio, int off, int len, 509 int (*f)(void *, void *, u_int), void *arg); 510 511struct mbuf; 512struct iovec; 513extern int crypto_mbuftoiov(struct mbuf *mbuf, struct iovec **iovptr, 514 int *cnt, int *allocated); 515 516extern void crypto_copyback(int flags, caddr_t buf, int off, int size, 517 caddr_t in); 518extern void crypto_copydata(int flags, caddr_t buf, int off, int size, 519 caddr_t out); 520extern 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