2 * Scatterlist Cryptographic API.
4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
9 * and Nettle, by Niels Möller.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
17 #ifndef _LINUX_CRYPTO_H
18 #define _LINUX_CRYPTO_H
20 #include <asm/atomic.h>
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/slab.h>
25 #include <linux/string.h>
26 #include <linux/uaccess.h>
29 * Algorithm masks and types.
31 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
32 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
33 #define CRYPTO_ALG_TYPE_DIGEST 0x00000002
34 #define CRYPTO_ALG_TYPE_HASH 0x00000003
35 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
36 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
37 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
38 #define CRYPTO_ALG_TYPE_AEAD 0x00000009
40 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
41 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
43 #define CRYPTO_ALG_LARVAL 0x00000010
44 #define CRYPTO_ALG_DEAD 0x00000020
45 #define CRYPTO_ALG_DYING 0x00000040
46 #define CRYPTO_ALG_ASYNC 0x00000080
49 * Set this bit if and only if the algorithm requires another algorithm of
50 * the same type to handle corner cases.
52 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
55 * Transform masks and values (for crt_flags).
57 #define CRYPTO_TFM_REQ_MASK 0x000fff00
58 #define CRYPTO_TFM_RES_MASK 0xfff00000
60 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
61 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
62 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
63 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
64 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
65 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
66 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
67 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
70 * Miscellaneous stuff.
72 #define CRYPTO_MAX_ALG_NAME 64
75 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
76 * declaration) is used to ensure that the crypto_tfm context structure is
77 * aligned correctly for the given architecture so that there are no alignment
78 * faults for C data types. In particular, this is required on platforms such
79 * as arm where pointers are 32-bit aligned but there are data types such as
80 * u64 which require 64-bit alignment.
82 #if defined(ARCH_KMALLOC_MINALIGN)
83 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
84 #elif defined(ARCH_SLAB_MINALIGN)
85 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
88 #ifdef CRYPTO_MINALIGN
89 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
91 #define CRYPTO_MINALIGN_ATTR
95 struct crypto_ablkcipher;
96 struct crypto_async_request;
98 struct crypto_blkcipher;
103 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
105 struct crypto_async_request {
106 struct list_head list;
107 crypto_completion_t complete;
109 struct crypto_tfm *tfm;
114 struct ablkcipher_request {
115 struct crypto_async_request base;
121 struct scatterlist *src;
122 struct scatterlist *dst;
124 void *__ctx[] CRYPTO_MINALIGN_ATTR;
128 * struct aead_request - AEAD request
129 * @base: Common attributes for async crypto requests
130 * @assoclen: Length in bytes of associated data for authentication
131 * @cryptlen: Length of data to be encrypted or decrypted
132 * @iv: Initialisation vector
133 * @assoc: Associated data
135 * @dst: Destination data
136 * @__ctx: Start of private context data
138 struct aead_request {
139 struct crypto_async_request base;
141 unsigned int assoclen;
142 unsigned int cryptlen;
146 struct scatterlist *assoc;
147 struct scatterlist *src;
148 struct scatterlist *dst;
150 void *__ctx[] CRYPTO_MINALIGN_ATTR;
153 struct blkcipher_desc {
154 struct crypto_blkcipher *tfm;
160 struct crypto_tfm *tfm;
161 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
162 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
163 const u8 *src, unsigned int nbytes);
168 struct crypto_hash *tfm;
173 * Algorithms: modular crypto algorithm implementations, managed
174 * via crypto_register_alg() and crypto_unregister_alg().
176 struct ablkcipher_alg {
177 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
178 unsigned int keylen);
179 int (*encrypt)(struct ablkcipher_request *req);
180 int (*decrypt)(struct ablkcipher_request *req);
182 unsigned int min_keysize;
183 unsigned int max_keysize;
188 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
189 unsigned int keylen);
190 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
191 int (*encrypt)(struct aead_request *req);
192 int (*decrypt)(struct aead_request *req);
195 unsigned int maxauthsize;
198 struct blkcipher_alg {
199 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
200 unsigned int keylen);
201 int (*encrypt)(struct blkcipher_desc *desc,
202 struct scatterlist *dst, struct scatterlist *src,
203 unsigned int nbytes);
204 int (*decrypt)(struct blkcipher_desc *desc,
205 struct scatterlist *dst, struct scatterlist *src,
206 unsigned int nbytes);
208 unsigned int min_keysize;
209 unsigned int max_keysize;
214 unsigned int cia_min_keysize;
215 unsigned int cia_max_keysize;
216 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
217 unsigned int keylen);
218 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
219 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
223 unsigned int dia_digestsize;
224 void (*dia_init)(struct crypto_tfm *tfm);
225 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
227 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
228 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
229 unsigned int keylen);
233 int (*init)(struct hash_desc *desc);
234 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
235 unsigned int nbytes);
236 int (*final)(struct hash_desc *desc, u8 *out);
237 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
238 unsigned int nbytes, u8 *out);
239 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
240 unsigned int keylen);
242 unsigned int digestsize;
245 struct compress_alg {
246 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
247 unsigned int slen, u8 *dst, unsigned int *dlen);
248 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
249 unsigned int slen, u8 *dst, unsigned int *dlen);
252 #define cra_ablkcipher cra_u.ablkcipher
253 #define cra_aead cra_u.aead
254 #define cra_blkcipher cra_u.blkcipher
255 #define cra_cipher cra_u.cipher
256 #define cra_digest cra_u.digest
257 #define cra_hash cra_u.hash
258 #define cra_compress cra_u.compress
261 struct list_head cra_list;
262 struct list_head cra_users;
265 unsigned int cra_blocksize;
266 unsigned int cra_ctxsize;
267 unsigned int cra_alignmask;
272 char cra_name[CRYPTO_MAX_ALG_NAME];
273 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
275 const struct crypto_type *cra_type;
278 struct ablkcipher_alg ablkcipher;
279 struct aead_alg aead;
280 struct blkcipher_alg blkcipher;
281 struct cipher_alg cipher;
282 struct digest_alg digest;
283 struct hash_alg hash;
284 struct compress_alg compress;
287 int (*cra_init)(struct crypto_tfm *tfm);
288 void (*cra_exit)(struct crypto_tfm *tfm);
289 void (*cra_destroy)(struct crypto_alg *alg);
291 struct module *cra_module;
295 * Algorithm registration interface.
297 int crypto_register_alg(struct crypto_alg *alg);
298 int crypto_unregister_alg(struct crypto_alg *alg);
301 * Algorithm query interface.
304 int crypto_has_alg(const char *name, u32 type, u32 mask);
306 static inline int crypto_has_alg(const char *name, u32 type, u32 mask)
313 * Transforms: user-instantiated objects which encapsulate algorithms
314 * and core processing logic. Managed via crypto_alloc_*() and
315 * crypto_free_*(), as well as the various helpers below.
318 struct ablkcipher_tfm {
319 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
320 unsigned int keylen);
321 int (*encrypt)(struct ablkcipher_request *req);
322 int (*decrypt)(struct ablkcipher_request *req);
324 unsigned int reqsize;
328 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
329 unsigned int keylen);
330 int (*encrypt)(struct aead_request *req);
331 int (*decrypt)(struct aead_request *req);
333 unsigned int authsize;
334 unsigned int reqsize;
337 struct blkcipher_tfm {
339 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
340 unsigned int keylen);
341 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
342 struct scatterlist *src, unsigned int nbytes);
343 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
344 struct scatterlist *src, unsigned int nbytes);
348 int (*cit_setkey)(struct crypto_tfm *tfm,
349 const u8 *key, unsigned int keylen);
350 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
351 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
355 int (*init)(struct hash_desc *desc);
356 int (*update)(struct hash_desc *desc,
357 struct scatterlist *sg, unsigned int nsg);
358 int (*final)(struct hash_desc *desc, u8 *out);
359 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
360 unsigned int nsg, u8 *out);
361 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
362 unsigned int keylen);
363 unsigned int digestsize;
366 struct compress_tfm {
367 int (*cot_compress)(struct crypto_tfm *tfm,
368 const u8 *src, unsigned int slen,
369 u8 *dst, unsigned int *dlen);
370 int (*cot_decompress)(struct crypto_tfm *tfm,
371 const u8 *src, unsigned int slen,
372 u8 *dst, unsigned int *dlen);
375 #define crt_ablkcipher crt_u.ablkcipher
376 #define crt_aead crt_u.aead
377 #define crt_blkcipher crt_u.blkcipher
378 #define crt_cipher crt_u.cipher
379 #define crt_hash crt_u.hash
380 #define crt_compress crt_u.compress
387 struct ablkcipher_tfm ablkcipher;
388 struct aead_tfm aead;
389 struct blkcipher_tfm blkcipher;
390 struct cipher_tfm cipher;
391 struct hash_tfm hash;
392 struct compress_tfm compress;
395 struct crypto_alg *__crt_alg;
397 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
400 struct crypto_ablkcipher {
401 struct crypto_tfm base;
405 struct crypto_tfm base;
408 struct crypto_blkcipher {
409 struct crypto_tfm base;
412 struct crypto_cipher {
413 struct crypto_tfm base;
417 struct crypto_tfm base;
421 struct crypto_tfm base;
432 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
434 /* Maximum number of (rtattr) parameters for each template. */
435 #define CRYPTO_MAX_ATTRS 32
437 struct crypto_attr_alg {
438 char name[CRYPTO_MAX_ALG_NAME];
441 struct crypto_attr_type {
446 struct crypto_attr_u32 {
451 * Transform user interface.
454 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
455 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
456 void crypto_free_tfm(struct crypto_tfm *tfm);
459 * Transform helpers which query the underlying algorithm.
461 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
463 return tfm->__crt_alg->cra_name;
466 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
468 return tfm->__crt_alg->cra_driver_name;
471 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
473 return tfm->__crt_alg->cra_priority;
476 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
478 return module_name(tfm->__crt_alg->cra_module);
481 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
483 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
486 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
488 return tfm->__crt_alg->cra_blocksize;
491 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
493 return tfm->__crt_alg->cra_alignmask;
496 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
498 return tfm->crt_flags;
501 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
503 tfm->crt_flags |= flags;
506 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
508 tfm->crt_flags &= ~flags;
511 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
513 return tfm->__crt_ctx;
516 static inline unsigned int crypto_tfm_ctx_alignment(void)
518 struct crypto_tfm *tfm;
519 return __alignof__(tfm->__crt_ctx);
525 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
526 struct crypto_tfm *tfm)
528 return (struct crypto_ablkcipher *)tfm;
531 static inline struct crypto_ablkcipher *crypto_alloc_ablkcipher(
532 const char *alg_name, u32 type, u32 mask)
534 type &= ~CRYPTO_ALG_TYPE_MASK;
535 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
536 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
538 return __crypto_ablkcipher_cast(
539 crypto_alloc_base(alg_name, type, mask));
542 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
543 struct crypto_ablkcipher *tfm)
548 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
550 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
553 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
556 type &= ~CRYPTO_ALG_TYPE_MASK;
557 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
558 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
560 return crypto_has_alg(alg_name, type, mask);
563 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
564 struct crypto_ablkcipher *tfm)
566 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
569 static inline unsigned int crypto_ablkcipher_ivsize(
570 struct crypto_ablkcipher *tfm)
572 return crypto_ablkcipher_crt(tfm)->ivsize;
575 static inline unsigned int crypto_ablkcipher_blocksize(
576 struct crypto_ablkcipher *tfm)
578 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
581 static inline unsigned int crypto_ablkcipher_alignmask(
582 struct crypto_ablkcipher *tfm)
584 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
587 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
589 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
592 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
595 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
598 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
601 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
604 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
605 const u8 *key, unsigned int keylen)
607 return crypto_ablkcipher_crt(tfm)->setkey(tfm, key, keylen);
610 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
611 struct ablkcipher_request *req)
613 return __crypto_ablkcipher_cast(req->base.tfm);
616 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
618 struct ablkcipher_tfm *crt =
619 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
620 return crt->encrypt(req);
623 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
625 struct ablkcipher_tfm *crt =
626 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
627 return crt->decrypt(req);
630 static inline unsigned int crypto_ablkcipher_reqsize(
631 struct crypto_ablkcipher *tfm)
633 return crypto_ablkcipher_crt(tfm)->reqsize;
636 static inline void ablkcipher_request_set_tfm(
637 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
639 req->base.tfm = crypto_ablkcipher_tfm(tfm);
642 static inline struct ablkcipher_request *ablkcipher_request_cast(
643 struct crypto_async_request *req)
645 return container_of(req, struct ablkcipher_request, base);
648 static inline struct ablkcipher_request *ablkcipher_request_alloc(
649 struct crypto_ablkcipher *tfm, gfp_t gfp)
651 struct ablkcipher_request *req;
653 req = kmalloc(sizeof(struct ablkcipher_request) +
654 crypto_ablkcipher_reqsize(tfm), gfp);
657 ablkcipher_request_set_tfm(req, tfm);
662 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
667 static inline void ablkcipher_request_set_callback(
668 struct ablkcipher_request *req,
669 u32 flags, crypto_completion_t complete, void *data)
671 req->base.complete = complete;
672 req->base.data = data;
673 req->base.flags = flags;
676 static inline void ablkcipher_request_set_crypt(
677 struct ablkcipher_request *req,
678 struct scatterlist *src, struct scatterlist *dst,
679 unsigned int nbytes, void *iv)
683 req->nbytes = nbytes;
687 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
689 return (struct crypto_aead *)tfm;
692 static inline struct crypto_aead *crypto_alloc_aead(const char *alg_name,
695 type &= ~CRYPTO_ALG_TYPE_MASK;
696 type |= CRYPTO_ALG_TYPE_AEAD;
697 mask |= CRYPTO_ALG_TYPE_MASK;
699 return __crypto_aead_cast(crypto_alloc_base(alg_name, type, mask));
702 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
707 static inline void crypto_free_aead(struct crypto_aead *tfm)
709 crypto_free_tfm(crypto_aead_tfm(tfm));
712 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
714 return &crypto_aead_tfm(tfm)->crt_aead;
717 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
719 return crypto_aead_crt(tfm)->ivsize;
722 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
724 return crypto_aead_crt(tfm)->authsize;
727 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
729 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
732 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
734 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
737 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
739 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
742 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
744 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
747 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
749 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
752 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
755 return crypto_aead_crt(tfm)->setkey(tfm, key, keylen);
758 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
760 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
762 return __crypto_aead_cast(req->base.tfm);
765 static inline int crypto_aead_encrypt(struct aead_request *req)
767 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
770 static inline int crypto_aead_decrypt(struct aead_request *req)
772 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
775 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
777 return crypto_aead_crt(tfm)->reqsize;
780 static inline void aead_request_set_tfm(struct aead_request *req,
781 struct crypto_aead *tfm)
783 req->base.tfm = crypto_aead_tfm(tfm);
786 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
789 struct aead_request *req;
791 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
794 aead_request_set_tfm(req, tfm);
799 static inline void aead_request_free(struct aead_request *req)
804 static inline void aead_request_set_callback(struct aead_request *req,
806 crypto_completion_t complete,
809 req->base.complete = complete;
810 req->base.data = data;
811 req->base.flags = flags;
814 static inline void aead_request_set_crypt(struct aead_request *req,
815 struct scatterlist *src,
816 struct scatterlist *dst,
817 unsigned int cryptlen, u8 *iv)
821 req->cryptlen = cryptlen;
825 static inline void aead_request_set_assoc(struct aead_request *req,
826 struct scatterlist *assoc,
827 unsigned int assoclen)
830 req->assoclen = assoclen;
833 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
834 struct crypto_tfm *tfm)
836 return (struct crypto_blkcipher *)tfm;
839 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
840 struct crypto_tfm *tfm)
842 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
843 return __crypto_blkcipher_cast(tfm);
846 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
847 const char *alg_name, u32 type, u32 mask)
849 type &= ~CRYPTO_ALG_TYPE_MASK;
850 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
851 mask |= CRYPTO_ALG_TYPE_MASK;
853 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
856 static inline struct crypto_tfm *crypto_blkcipher_tfm(
857 struct crypto_blkcipher *tfm)
862 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
864 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
867 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
869 type &= ~CRYPTO_ALG_TYPE_MASK;
870 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
871 mask |= CRYPTO_ALG_TYPE_MASK;
873 return crypto_has_alg(alg_name, type, mask);
876 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
878 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
881 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
882 struct crypto_blkcipher *tfm)
884 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
887 static inline struct blkcipher_alg *crypto_blkcipher_alg(
888 struct crypto_blkcipher *tfm)
890 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
893 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
895 return crypto_blkcipher_alg(tfm)->ivsize;
898 static inline unsigned int crypto_blkcipher_blocksize(
899 struct crypto_blkcipher *tfm)
901 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
904 static inline unsigned int crypto_blkcipher_alignmask(
905 struct crypto_blkcipher *tfm)
907 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
910 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
912 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
915 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
918 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
921 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
924 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
927 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
928 const u8 *key, unsigned int keylen)
930 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
934 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
935 struct scatterlist *dst,
936 struct scatterlist *src,
939 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
940 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
943 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
944 struct scatterlist *dst,
945 struct scatterlist *src,
948 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
951 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
952 struct scatterlist *dst,
953 struct scatterlist *src,
956 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
957 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
960 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
961 struct scatterlist *dst,
962 struct scatterlist *src,
965 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
968 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
969 const u8 *src, unsigned int len)
971 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
974 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
975 u8 *dst, unsigned int len)
977 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
980 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
982 return (struct crypto_cipher *)tfm;
985 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
987 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
988 return __crypto_cipher_cast(tfm);
991 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
994 type &= ~CRYPTO_ALG_TYPE_MASK;
995 type |= CRYPTO_ALG_TYPE_CIPHER;
996 mask |= CRYPTO_ALG_TYPE_MASK;
998 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1001 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1006 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1008 crypto_free_tfm(crypto_cipher_tfm(tfm));
1011 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1013 type &= ~CRYPTO_ALG_TYPE_MASK;
1014 type |= CRYPTO_ALG_TYPE_CIPHER;
1015 mask |= CRYPTO_ALG_TYPE_MASK;
1017 return crypto_has_alg(alg_name, type, mask);
1020 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1022 return &crypto_cipher_tfm(tfm)->crt_cipher;
1025 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1027 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1030 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1032 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1035 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1037 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1040 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1043 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1046 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1049 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1052 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1053 const u8 *key, unsigned int keylen)
1055 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1059 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1060 u8 *dst, const u8 *src)
1062 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1066 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1067 u8 *dst, const u8 *src)
1069 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1073 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1075 return (struct crypto_hash *)tfm;
1078 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1080 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1081 CRYPTO_ALG_TYPE_HASH_MASK);
1082 return __crypto_hash_cast(tfm);
1085 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1088 type &= ~CRYPTO_ALG_TYPE_MASK;
1089 type |= CRYPTO_ALG_TYPE_HASH;
1090 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1092 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1095 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1100 static inline void crypto_free_hash(struct crypto_hash *tfm)
1102 crypto_free_tfm(crypto_hash_tfm(tfm));
1105 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1107 type &= ~CRYPTO_ALG_TYPE_MASK;
1108 type |= CRYPTO_ALG_TYPE_HASH;
1109 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1111 return crypto_has_alg(alg_name, type, mask);
1114 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1116 return &crypto_hash_tfm(tfm)->crt_hash;
1119 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1121 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1124 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1126 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1129 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1131 return crypto_hash_crt(tfm)->digestsize;
1134 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1136 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1139 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1141 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1144 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1146 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1149 static inline int crypto_hash_init(struct hash_desc *desc)
1151 return crypto_hash_crt(desc->tfm)->init(desc);
1154 static inline int crypto_hash_update(struct hash_desc *desc,
1155 struct scatterlist *sg,
1156 unsigned int nbytes)
1158 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1161 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1163 return crypto_hash_crt(desc->tfm)->final(desc, out);
1166 static inline int crypto_hash_digest(struct hash_desc *desc,
1167 struct scatterlist *sg,
1168 unsigned int nbytes, u8 *out)
1170 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1173 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1174 const u8 *key, unsigned int keylen)
1176 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1179 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1181 return (struct crypto_comp *)tfm;
1184 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1186 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1187 CRYPTO_ALG_TYPE_MASK);
1188 return __crypto_comp_cast(tfm);
1191 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1194 type &= ~CRYPTO_ALG_TYPE_MASK;
1195 type |= CRYPTO_ALG_TYPE_COMPRESS;
1196 mask |= CRYPTO_ALG_TYPE_MASK;
1198 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1201 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1206 static inline void crypto_free_comp(struct crypto_comp *tfm)
1208 crypto_free_tfm(crypto_comp_tfm(tfm));
1211 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1213 type &= ~CRYPTO_ALG_TYPE_MASK;
1214 type |= CRYPTO_ALG_TYPE_COMPRESS;
1215 mask |= CRYPTO_ALG_TYPE_MASK;
1217 return crypto_has_alg(alg_name, type, mask);
1220 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1222 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1225 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1227 return &crypto_comp_tfm(tfm)->crt_compress;
1230 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1231 const u8 *src, unsigned int slen,
1232 u8 *dst, unsigned int *dlen)
1234 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1235 src, slen, dst, dlen);
1238 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1239 const u8 *src, unsigned int slen,
1240 u8 *dst, unsigned int *dlen)
1242 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1243 src, slen, dst, dlen);
1246 #endif /* _LINUX_CRYPTO_H */