2 /* $OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $ */
5 * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
6 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
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.
12 * Copyright (c) 2000 Angelos D. Keromytis
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.
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
25 * Copyright (c) 2001 Theo de Raadt
26 * Copyright (c) 2014 The FreeBSD Foundation
27 * All rights reserved.
29 * Portions of this software were developed by John-Mark Gurney
30 * under sponsorship of the FreeBSD Foundation and
31 * Rubicon Communications, LLC (Netgate).
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
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.
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.
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.
62 #ifndef _CRYPTO_CRYPTO_H_
63 #define _CRYPTO_CRYPTO_H_
65 #include <sys/ioccom.h>
68 #include <opencrypto/_cryptodev.h>
69 #include <sys/_task.h>
72 /* Some initial values */
73 #define CRYPTO_DRIVERS_INITIAL 4
76 #define NULL_HASH_LEN 16
77 #define MD5_HASH_LEN 16
78 #define SHA1_HASH_LEN 20
79 #define RIPEMD160_HASH_LEN 20
80 #define SHA2_224_HASH_LEN 28
81 #define SHA2_256_HASH_LEN 32
82 #define SHA2_384_HASH_LEN 48
83 #define SHA2_512_HASH_LEN 64
84 #define AES_GMAC_HASH_LEN 16
85 #define POLY1305_HASH_LEN 16
86 #define AES_CBC_MAC_HASH_LEN 16
87 /* Maximum hash algorithm result length */
88 #define HASH_MAX_LEN SHA2_512_HASH_LEN /* Keep this updated */
90 #define MD5_BLOCK_LEN 64
91 #define SHA1_BLOCK_LEN 64
92 #define RIPEMD160_BLOCK_LEN 64
93 #define SHA2_224_BLOCK_LEN 64
94 #define SHA2_256_BLOCK_LEN 64
95 #define SHA2_384_BLOCK_LEN 128
96 #define SHA2_512_BLOCK_LEN 128
99 #define NULL_HMAC_BLOCK_LEN 64
100 /* Maximum HMAC block length */
101 #define HMAC_MAX_BLOCK_LEN SHA2_512_BLOCK_LEN /* Keep this updated */
102 #define HMAC_IPAD_VAL 0x36
103 #define HMAC_OPAD_VAL 0x5C
104 /* HMAC Key Length */
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 #define AES_128_CBC_MAC_KEY_LEN 16
109 #define AES_192_CBC_MAC_KEY_LEN 24
110 #define AES_256_CBC_MAC_KEY_LEN 32
112 #define POLY1305_KEY_LEN 32
114 /* Encryption algorithm block sizes */
115 #define NULL_BLOCK_LEN 4 /* IPsec to maintain alignment */
116 #define RIJNDAEL128_BLOCK_LEN 16
117 #define AES_BLOCK_LEN 16
118 #define AES_ICM_BLOCK_LEN 1
119 #define CAMELLIA_BLOCK_LEN 16
120 #define CHACHA20_NATIVE_BLOCK_LEN 64
121 #define EALG_MAX_BLOCK_LEN CHACHA20_NATIVE_BLOCK_LEN /* Keep this updated */
125 #define AES_GCM_IV_LEN 12
126 #define AES_CCM_IV_LEN 12
127 #define AES_XTS_IV_LEN 8
128 #define AES_XTS_ALPHA 0x87 /* GF(2^128) generator polynomial */
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 RIJNDAEL_MIN_KEY 16
134 #define RIJNDAEL_MAX_KEY 32
135 #define AES_MIN_KEY RIJNDAEL_MIN_KEY
136 #define AES_MAX_KEY RIJNDAEL_MAX_KEY
137 #define AES_XTS_MIN_KEY (2 * AES_MIN_KEY)
138 #define AES_XTS_MAX_KEY (2 * AES_MAX_KEY)
139 #define CAMELLIA_MIN_KEY 8
140 #define CAMELLIA_MAX_KEY 32
142 /* Maximum hash algorithm result length */
143 #define AALG_MAX_RESULT_LEN 64 /* Keep this updated */
145 #define CRYPTO_ALGORITHM_MIN 1
146 #define CRYPTO_DES_CBC 1
147 #define CRYPTO_3DES_CBC 2
148 #define CRYPTO_BLF_CBC 3
149 #define CRYPTO_CAST_CBC 4
150 #define CRYPTO_SKIPJACK_CBC 5
151 #define CRYPTO_MD5_HMAC 6
152 #define CRYPTO_SHA1_HMAC 7
153 #define CRYPTO_RIPEMD160_HMAC 8
154 #define CRYPTO_MD5_KPDK 9
155 #define CRYPTO_SHA1_KPDK 10
156 #define CRYPTO_RIJNDAEL128_CBC 11 /* 128 bit blocksize */
157 #define CRYPTO_AES_CBC 11 /* 128 bit blocksize -- the same as above */
158 #define CRYPTO_ARC4 12
159 #define CRYPTO_MD5 13
160 #define CRYPTO_SHA1 14
161 #define CRYPTO_NULL_HMAC 15
162 #define CRYPTO_NULL_CBC 16
163 #define CRYPTO_DEFLATE_COMP 17 /* Deflate compression algorithm */
164 #define CRYPTO_SHA2_256_HMAC 18
165 #define CRYPTO_SHA2_384_HMAC 19
166 #define CRYPTO_SHA2_512_HMAC 20
167 #define CRYPTO_CAMELLIA_CBC 21
168 #define CRYPTO_AES_XTS 22
169 #define CRYPTO_AES_ICM 23 /* commonly known as CTR mode */
170 #define CRYPTO_AES_NIST_GMAC 24 /* GMAC only */
171 #define CRYPTO_AES_NIST_GCM_16 25 /* 16 byte ICV */
173 #define CRYPTO_AES_128_NIST_GMAC 26 /* auth side */
174 #define CRYPTO_AES_192_NIST_GMAC 27 /* auth side */
175 #define CRYPTO_AES_256_NIST_GMAC 28 /* auth side */
177 #define CRYPTO_BLAKE2B 29 /* Blake2b hash */
178 #define CRYPTO_BLAKE2S 30 /* Blake2s hash */
179 #define CRYPTO_CHACHA20 31 /* Chacha20 stream cipher */
180 #define CRYPTO_SHA2_224_HMAC 32
181 #define CRYPTO_RIPEMD160 33
182 #define CRYPTO_SHA2_224 34
183 #define CRYPTO_SHA2_256 35
184 #define CRYPTO_SHA2_384 36
185 #define CRYPTO_SHA2_512 37
186 #define CRYPTO_POLY1305 38
187 #define CRYPTO_AES_CCM_CBC_MAC 39 /* auth side */
188 #define CRYPTO_AES_CCM_16 40 /* cipher side */
189 #define CRYPTO_ALGORITHM_MAX 40 /* Keep updated - see below */
191 #define CRYPTO_ALGO_VALID(x) ((x) >= CRYPTO_ALGORITHM_MIN && \
192 (x) <= CRYPTO_ALGORITHM_MAX)
194 /* Algorithm flags */
195 #define CRYPTO_ALG_FLAG_SUPPORTED 0x01 /* Algorithm is supported */
196 #define CRYPTO_ALG_FLAG_RNG_ENABLE 0x02 /* Has HW RNG for DH/DSA */
197 #define CRYPTO_ALG_FLAG_DSA_SHA 0x04 /* Can do SHA on msg */
200 * Crypto driver/device flags. They can set in the crid
201 * parameter when creating a session or submitting a key
202 * op to affect the device/driver assigned. If neither
203 * of these are specified then the crid is assumed to hold
204 * the driver id of an existing (and suitable) device that
205 * must be used to satisfy the request.
207 #define CRYPTO_FLAG_HARDWARE 0x01000000 /* hardware accelerated */
208 #define CRYPTO_FLAG_SOFTWARE 0x02000000 /* software implementation */
212 u_int32_t cipher; /* ie. CRYPTO_AES_CBC */
213 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
215 u_int32_t keylen; /* cipher key */
217 int mackeylen; /* mac key */
220 u_int32_t ses; /* returns: session # */
224 * session and crypt _op structs are used by userspace programs to interact
225 * with /dev/crypto. Confusingly, the internal kernel interface is named
226 * "cryptop" (no underscore).
229 u_int32_t cipher; /* ie. CRYPTO_AES_CBC */
230 u_int32_t mac; /* ie. CRYPTO_MD5_HMAC */
232 u_int32_t keylen; /* cipher key */
234 int mackeylen; /* mac key */
237 u_int32_t ses; /* returns: session # */
238 int crid; /* driver id + flags (rw) */
239 int pad[4]; /* for future expansion */
244 u_int16_t op; /* i.e. COP_ENCRYPT */
245 #define COP_ENCRYPT 1
246 #define COP_DECRYPT 2
248 #define COP_F_CIPHER_FIRST 0x0001 /* Cipher before MAC. */
249 #define COP_F_BATCH 0x0008 /* Batch op if possible */
251 c_caddr_t src; /* become iov[] inside kernel */
253 caddr_t mac; /* must be big enough for chosen MAC */
257 /* op and flags the same as crypt_op */
260 u_int16_t op; /* i.e. COP_ENCRYPT */
265 c_caddr_t src; /* become iov[] inside kernel */
267 c_caddr_t aad; /* additional authenticated data */
268 caddr_t tag; /* must fit for chosen TAG length */
273 * Parameters for looking up a crypto driver/device by
274 * device name or by id. The latter are returned for
275 * created sessions (crid) and completed key operations.
277 struct crypt_find_op {
278 int crid; /* driver id + flags */
279 char name[32]; /* device/driver name */
282 /* bignum parameter, in packed bytes, ... */
288 #define CRK_MAXPARAM 8
291 u_int crk_op; /* ie. CRK_MOD_EXP or other */
292 u_int crk_status; /* return status */
293 u_short crk_iparams; /* # of input parameters */
294 u_short crk_oparams; /* # of output parameters */
295 u_int crk_crid; /* NB: only used by CIOCKEY2 (rw) */
296 struct crparam crk_param[CRK_MAXPARAM];
298 #define CRK_ALGORITM_MIN 0
299 #define CRK_MOD_EXP 0
300 #define CRK_MOD_EXP_CRT 1
301 #define CRK_DSA_SIGN 2
302 #define CRK_DSA_VERIFY 3
303 #define CRK_DH_COMPUTE_KEY 4
304 #define CRK_ALGORITHM_MAX 4 /* Keep updated - see below */
306 #define CRF_MOD_EXP (1 << CRK_MOD_EXP)
307 #define CRF_MOD_EXP_CRT (1 << CRK_MOD_EXP_CRT)
308 #define CRF_DSA_SIGN (1 << CRK_DSA_SIGN)
309 #define CRF_DSA_VERIFY (1 << CRK_DSA_VERIFY)
310 #define CRF_DH_COMPUTE_KEY (1 << CRK_DH_COMPUTE_KEY)
313 * done against open of /dev/crypto, to get a cloned descriptor.
314 * Please use F_SETFD against the cloned descriptor.
316 #define CRIOGET _IOWR('c', 100, u_int32_t)
317 #define CRIOASYMFEAT CIOCASYMFEAT
318 #define CRIOFINDDEV CIOCFINDDEV
320 /* the following are done against the cloned descriptor */
321 #define CIOCGSESSION _IOWR('c', 101, struct session_op)
322 #define CIOCFSESSION _IOW('c', 102, u_int32_t)
323 #define CIOCCRYPT _IOWR('c', 103, struct crypt_op)
324 #define CIOCKEY _IOWR('c', 104, struct crypt_kop)
325 #define CIOCASYMFEAT _IOR('c', 105, u_int32_t)
326 #define CIOCGSESSION2 _IOWR('c', 106, struct session2_op)
327 #define CIOCKEY2 _IOWR('c', 107, struct crypt_kop)
328 #define CIOCFINDDEV _IOWR('c', 108, struct crypt_find_op)
329 #define CIOCCRYPTAEAD _IOWR('c', 109, struct crypt_aead)
332 struct timespec acc; /* total accumulated time */
333 struct timespec min; /* min time */
334 struct timespec max; /* max time */
335 u_int32_t count; /* number of observations */
339 u_int32_t cs_ops; /* symmetric crypto ops submitted */
340 u_int32_t cs_errs; /* symmetric crypto ops that failed */
341 u_int32_t cs_kops; /* asymetric/key ops submitted */
342 u_int32_t cs_kerrs; /* asymetric/key ops that failed */
343 u_int32_t cs_intrs; /* crypto swi thread activations */
344 u_int32_t cs_rets; /* crypto return thread activations */
345 u_int32_t cs_blocks; /* symmetric op driver block */
346 u_int32_t cs_kblocks; /* symmetric op driver block */
348 * When CRYPTO_TIMING is defined at compile time and the
349 * sysctl debug.crypto is set to 1, the crypto system will
350 * accumulate statistics about how long it takes to process
351 * crypto requests at various points during processing.
353 struct cryptotstat cs_invoke; /* crypto_dipsatch -> crypto_invoke */
354 struct cryptotstat cs_done; /* crypto_invoke -> crypto_done */
355 struct cryptotstat cs_cb; /* crypto_done -> callback */
356 struct cryptotstat cs_finis; /* callback -> callback return */
362 * Return values for cryptodev_probesession methods.
364 #define CRYPTODEV_PROBE_HARDWARE (-100)
365 #define CRYPTODEV_PROBE_ACCEL_SOFTWARE (-200)
366 #define CRYPTODEV_PROBE_SOFTWARE (-500)
369 #define CRYPTDEB(s, ...) do { \
370 printf("%s:%d: " s "\n", __FILE__, __LINE__, ## __VA_ARGS__); \
373 #define CRYPTDEB(...) do { } while (0)
376 struct crypto_session_params {
377 int csp_mode; /* Type of operations to perform. */
379 #define CSP_MODE_NONE 0
380 #define CSP_MODE_COMPRESS 1 /* Compression/decompression. */
381 #define CSP_MODE_CIPHER 2 /* Encrypt/decrypt. */
382 #define CSP_MODE_DIGEST 3 /* Compute/verify digest. */
383 #define CSP_MODE_AEAD 4 /* Combined auth/encryption. */
384 #define CSP_MODE_ETA 5 /* IPsec style encrypt-then-auth */
388 int csp_ivlen; /* IV length in bytes. */
391 int csp_cipher_klen; /* Key length in bytes. */
392 const void *csp_cipher_key;
395 int csp_auth_klen; /* Key length in bytes. */
396 const void *csp_auth_key;
397 int csp_auth_mlen; /* Number of digest bytes to use.
401 /* Structure describing complete operation */
403 TAILQ_ENTRY(cryptop) crp_next;
405 struct task crp_task;
407 crypto_session_t crp_session; /* Session */
408 int crp_ilen; /* Input data total length */
409 int crp_olen; /* Result total length */
412 * Error type (zero means no error).
413 * All error codes except EAGAIN
414 * indicate possible data corruption (as in,
415 * the data have been touched). On all
416 * errors, the crp_session may have changed
417 * (reset to a new one), so the caller
418 * should always check and use the new
419 * value on future requests.
423 #define CRYPTO_F_BATCH 0x0008 /* Batch op if possible */
424 #define CRYPTO_F_CBIMM 0x0010 /* Do callback immediately */
425 #define CRYPTO_F_DONE 0x0020 /* Operation completed */
426 #define CRYPTO_F_CBIFSYNC 0x0040 /* Do CBIMM if op is synchronous */
427 #define CRYPTO_F_ASYNC 0x0080 /* Dispatch crypto jobs on several threads
428 * if op is synchronous
430 #define CRYPTO_F_ASYNC_KEEPORDER 0x0100 /*
431 * Dispatch the crypto jobs in the same
432 * order there are submitted. Applied only
433 * if CRYPTO_F_ASYNC flags is set
435 #define CRYPTO_F_IV_SEPARATE 0x0200 /* Use crp_iv[] as IV. */
440 caddr_t crp_buf; /* Data to be processed */
441 struct mbuf *crp_mbuf;
444 int crp_buf_type; /* Which union member describes data. */
446 int crp_aad_start; /* Location of AAD. */
447 int crp_aad_length; /* 0 => no AAD. */
448 int crp_iv_start; /* Location of IV. IV length is from
451 int crp_payload_start; /* Location of ciphertext. */
452 int crp_payload_length;
453 int crp_digest_start; /* Location of MAC/tag. Length is
457 uint8_t crp_iv[EALG_MAX_BLOCK_LEN]; /* IV if IV_SEPARATE. */
459 const void *crp_cipher_key; /* New cipher key if non-NULL. */
460 const void *crp_auth_key; /* New auth key if non-NULL. */
462 void *crp_opaque; /* Opaque pointer, passed along */
464 int (*crp_callback)(struct cryptop *); /* Callback function */
466 struct bintime crp_tstamp; /* performance time stamp */
467 uint32_t crp_seq; /* used for ordered dispatch */
468 uint32_t crp_retw_id; /*
469 * the return worker to be used,
470 * used for ordered dispatch
474 #define CRYPTOP_ASYNC(crp) \
475 (((crp)->crp_flags & CRYPTO_F_ASYNC) && \
476 crypto_ses2caps((crp)->crp_session) & CRYPTOCAP_F_SYNC)
477 #define CRYPTOP_ASYNC_KEEPORDER(crp) \
478 (CRYPTOP_ASYNC(crp) && \
479 (crp)->crp_flags & CRYPTO_F_ASYNC_KEEPORDER)
481 #define CRYPTO_BUF_CONTIG 0x0
482 #define CRYPTO_BUF_UIO 0x1
483 #define CRYPTO_BUF_MBUF 0x2
485 /* Flags in crp_op. */
486 #define CRYPTO_OP_DECRYPT 0x0
487 #define CRYPTO_OP_ENCRYPT 0x1
488 #define CRYPTO_OP_IS_ENCRYPT(op) ((op) & CRYPTO_OP_ENCRYPT)
489 #define CRYPTO_OP_COMPUTE_DIGEST 0x0
490 #define CRYPTO_OP_VERIFY_DIGEST 0x2
491 #define CRYPTO_OP_DECOMPRESS CRYPTO_OP_DECRYPT
492 #define CRYPTO_OP_COMPRESS CRYPTO_OP_ENCRYPT
493 #define CRYPTO_OP_IS_COMPRESS(op) ((op) & CRYPTO_OP_COMPRESS)
496 * Hints passed to process methods.
498 #define CRYPTO_HINT_MORE 0x1 /* more ops coming shortly */
501 TAILQ_ENTRY(cryptkop) krp_next;
503 u_int krp_op; /* ie. CRK_MOD_EXP or other */
504 u_int krp_status; /* return status */
505 u_short krp_iparams; /* # of input parameters */
506 u_short krp_oparams; /* # of output parameters */
507 u_int krp_crid; /* desired device, etc. */
508 uint32_t krp_hid; /* device used */
509 struct crparam krp_param[CRK_MAXPARAM]; /* kvm */
510 void (*krp_callback)(struct cryptkop *);
511 struct cryptocap *krp_cap;
514 uint32_t crypto_ses2hid(crypto_session_t crypto_session);
515 uint32_t crypto_ses2caps(crypto_session_t crypto_session);
516 void *crypto_get_driver_session(crypto_session_t crypto_session);
517 const struct crypto_session_params *crypto_get_params(
518 crypto_session_t crypto_session);
519 struct auth_hash *crypto_auth_hash(const struct crypto_session_params *csp);
520 struct enc_xform *crypto_cipher(const struct crypto_session_params *csp);
522 MALLOC_DECLARE(M_CRYPTO_DATA);
524 extern int crypto_newsession(crypto_session_t *cses,
525 const struct crypto_session_params *params, int hard);
526 extern void crypto_freesession(crypto_session_t cses);
527 #define CRYPTOCAP_F_HARDWARE CRYPTO_FLAG_HARDWARE
528 #define CRYPTOCAP_F_SOFTWARE CRYPTO_FLAG_SOFTWARE
529 #define CRYPTOCAP_F_SYNC 0x04000000 /* operates synchronously */
530 extern int32_t crypto_get_driverid(device_t dev, size_t session_size,
532 extern int crypto_find_driver(const char *);
533 extern device_t crypto_find_device_byhid(int hid);
534 extern int crypto_getcaps(int hid);
535 extern int crypto_kregister(u_int32_t, int, u_int32_t);
536 extern int crypto_unregister_all(u_int32_t driverid);
537 extern int crypto_dispatch(struct cryptop *crp);
538 extern int crypto_kdispatch(struct cryptkop *);
539 #define CRYPTO_SYMQ 0x1
540 #define CRYPTO_ASYMQ 0x2
541 extern int crypto_unblock(u_int32_t, int);
542 extern void crypto_done(struct cryptop *crp);
543 extern void crypto_kdone(struct cryptkop *);
544 extern int crypto_getfeat(int *);
546 extern void crypto_freereq(struct cryptop *crp);
547 extern struct cryptop *crypto_getreq(crypto_session_t cses, int how);
549 extern int crypto_usercrypto; /* userland may do crypto requests */
550 extern int crypto_userasymcrypto; /* userland may do asym crypto reqs */
551 extern int crypto_devallowsoft; /* only use hardware crypto */
553 /* Helper routines for drivers to initialize auth contexts for HMAC. */
556 void hmac_init_ipad(struct auth_hash *axf, const char *key, int klen,
558 void hmac_init_opad(struct auth_hash *axf, const char *key, int klen,
562 * Crypto-related utility routines used mainly by drivers.
564 * XXX these don't really belong here; but for now they're
565 * kept apart from the rest of the system.
567 * Similar to m_copyback/data, *_copyback copy data from the 'src'
568 * buffer into the crypto request's data buffer while *_copydata copy
569 * data from the crypto request's data buffer into the the 'dst'
573 extern void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp);
574 extern void cuio_copyback(struct uio* uio, int off, int len, c_caddr_t cp);
575 extern int cuio_getptr(struct uio *uio, int loc, int *off);
576 extern int cuio_apply(struct uio *uio, int off, int len,
577 int (*f)(void *, void *, u_int), void *arg);
581 extern int crypto_mbuftoiov(struct mbuf *mbuf, struct iovec **iovptr,
582 int *cnt, int *allocated);
584 void crypto_copyback(struct cryptop *crp, int off, int size,
586 void crypto_copydata(struct cryptop *crp, int off, int size, void *dst);
587 int crypto_apply(struct cryptop *crp, int off, int len,
588 int (*f)(void *, void *, u_int), void *arg);
589 void *crypto_contiguous_subsegment(struct cryptop *crp, size_t skip,
593 crypto_read_iv(struct cryptop *crp, void *iv)
595 const struct crypto_session_params *csp;
597 csp = crypto_get_params(crp->crp_session);
598 if (crp->crp_flags & CRYPTO_F_IV_SEPARATE)
599 memcpy(iv, crp->crp_iv, csp->csp_ivlen);
601 crypto_copydata(crp, crp->crp_iv_start, csp->csp_ivlen, iv);
605 #endif /* _CRYPTO_CRYPTO_H_ */