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 <linux/atomic.h>
21 #include <linux/kernel.h>
22 #include <linux/list.h>
23 #include <linux/slab.h>
24 #include <linux/string.h>
25 #include <linux/uaccess.h>
28 * Algorithm masks and types.
30 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
31 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
32 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000002
33 #define CRYPTO_ALG_TYPE_AEAD 0x00000003
34 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
35 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
36 #define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
37 #define CRYPTO_ALG_TYPE_DIGEST 0x00000008
38 #define CRYPTO_ALG_TYPE_HASH 0x00000008
39 #define CRYPTO_ALG_TYPE_SHASH 0x00000009
40 #define CRYPTO_ALG_TYPE_AHASH 0x0000000a
41 #define CRYPTO_ALG_TYPE_RNG 0x0000000c
42 #define CRYPTO_ALG_TYPE_PCOMPRESS 0x0000000f
44 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
45 #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
46 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
48 #define CRYPTO_ALG_LARVAL 0x00000010
49 #define CRYPTO_ALG_DEAD 0x00000020
50 #define CRYPTO_ALG_DYING 0x00000040
51 #define CRYPTO_ALG_ASYNC 0x00000080
54 * Set this bit if and only if the algorithm requires another algorithm of
55 * the same type to handle corner cases.
57 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
60 * This bit is set for symmetric key ciphers that have already been wrapped
61 * with a generic IV generator to prevent them from being wrapped again.
63 #define CRYPTO_ALG_GENIV 0x00000200
66 * Set if the algorithm has passed automated run-time testing. Note that
67 * if there is no run-time testing for a given algorithm it is considered
71 #define CRYPTO_ALG_TESTED 0x00000400
74 * Set if the algorithm is an instance that is build from templates.
76 #define CRYPTO_ALG_INSTANCE 0x00000800
78 /* Set this bit if the algorithm provided is hardware accelerated but
79 * not available to userspace via instruction set or so.
81 #define CRYPTO_ALG_KERN_DRIVER_ONLY 0x00001000
84 * Transform masks and values (for crt_flags).
86 #define CRYPTO_TFM_REQ_MASK 0x000fff00
87 #define CRYPTO_TFM_RES_MASK 0xfff00000
89 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
90 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
91 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
92 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
93 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
94 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
95 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
96 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
99 * Miscellaneous stuff.
101 #define CRYPTO_MAX_ALG_NAME 64
104 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
105 * declaration) is used to ensure that the crypto_tfm context structure is
106 * aligned correctly for the given architecture so that there are no alignment
107 * faults for C data types. In particular, this is required on platforms such
108 * as arm where pointers are 32-bit aligned but there are data types such as
109 * u64 which require 64-bit alignment.
111 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
113 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
116 struct crypto_ablkcipher;
117 struct crypto_async_request;
119 struct crypto_blkcipher;
124 struct aead_givcrypt_request;
125 struct skcipher_givcrypt_request;
127 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
129 struct crypto_async_request {
130 struct list_head list;
131 crypto_completion_t complete;
133 struct crypto_tfm *tfm;
138 struct ablkcipher_request {
139 struct crypto_async_request base;
145 struct scatterlist *src;
146 struct scatterlist *dst;
148 void *__ctx[] CRYPTO_MINALIGN_ATTR;
152 * struct aead_request - AEAD request
153 * @base: Common attributes for async crypto requests
154 * @assoclen: Length in bytes of associated data for authentication
155 * @cryptlen: Length of data to be encrypted or decrypted
156 * @iv: Initialisation vector
157 * @assoc: Associated data
159 * @dst: Destination data
160 * @__ctx: Start of private context data
162 struct aead_request {
163 struct crypto_async_request base;
165 unsigned int assoclen;
166 unsigned int cryptlen;
170 struct scatterlist *assoc;
171 struct scatterlist *src;
172 struct scatterlist *dst;
174 void *__ctx[] CRYPTO_MINALIGN_ATTR;
177 struct blkcipher_desc {
178 struct crypto_blkcipher *tfm;
184 struct crypto_tfm *tfm;
185 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
186 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
187 const u8 *src, unsigned int nbytes);
192 struct crypto_hash *tfm;
197 * Algorithms: modular crypto algorithm implementations, managed
198 * via crypto_register_alg() and crypto_unregister_alg().
200 struct ablkcipher_alg {
201 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
202 unsigned int keylen);
203 int (*encrypt)(struct ablkcipher_request *req);
204 int (*decrypt)(struct ablkcipher_request *req);
205 int (*givencrypt)(struct skcipher_givcrypt_request *req);
206 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
210 unsigned int min_keysize;
211 unsigned int max_keysize;
216 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
217 unsigned int keylen);
218 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
219 int (*encrypt)(struct aead_request *req);
220 int (*decrypt)(struct aead_request *req);
221 int (*givencrypt)(struct aead_givcrypt_request *req);
222 int (*givdecrypt)(struct aead_givcrypt_request *req);
227 unsigned int maxauthsize;
230 struct blkcipher_alg {
231 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
232 unsigned int keylen);
233 int (*encrypt)(struct blkcipher_desc *desc,
234 struct scatterlist *dst, struct scatterlist *src,
235 unsigned int nbytes);
236 int (*decrypt)(struct blkcipher_desc *desc,
237 struct scatterlist *dst, struct scatterlist *src,
238 unsigned int nbytes);
242 unsigned int min_keysize;
243 unsigned int max_keysize;
248 unsigned int cia_min_keysize;
249 unsigned int cia_max_keysize;
250 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
251 unsigned int keylen);
252 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
253 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
256 struct compress_alg {
257 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
258 unsigned int slen, u8 *dst, unsigned int *dlen);
259 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
260 unsigned int slen, u8 *dst, unsigned int *dlen);
264 int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
266 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
268 unsigned int seedsize;
272 #define cra_ablkcipher cra_u.ablkcipher
273 #define cra_aead cra_u.aead
274 #define cra_blkcipher cra_u.blkcipher
275 #define cra_cipher cra_u.cipher
276 #define cra_compress cra_u.compress
277 #define cra_rng cra_u.rng
280 struct list_head cra_list;
281 struct list_head cra_users;
284 unsigned int cra_blocksize;
285 unsigned int cra_ctxsize;
286 unsigned int cra_alignmask;
291 char cra_name[CRYPTO_MAX_ALG_NAME];
292 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
294 const struct crypto_type *cra_type;
297 struct ablkcipher_alg ablkcipher;
298 struct aead_alg aead;
299 struct blkcipher_alg blkcipher;
300 struct cipher_alg cipher;
301 struct compress_alg compress;
305 int (*cra_init)(struct crypto_tfm *tfm);
306 void (*cra_exit)(struct crypto_tfm *tfm);
307 void (*cra_destroy)(struct crypto_alg *alg);
309 struct module *cra_module;
313 * Algorithm registration interface.
315 int crypto_register_alg(struct crypto_alg *alg);
316 int crypto_unregister_alg(struct crypto_alg *alg);
317 int crypto_register_algs(struct crypto_alg *algs, int count);
318 int crypto_unregister_algs(struct crypto_alg *algs, int count);
321 * Algorithm query interface.
323 int crypto_has_alg(const char *name, u32 type, u32 mask);
326 * Transforms: user-instantiated objects which encapsulate algorithms
327 * and core processing logic. Managed via crypto_alloc_*() and
328 * crypto_free_*(), as well as the various helpers below.
331 struct ablkcipher_tfm {
332 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
333 unsigned int keylen);
334 int (*encrypt)(struct ablkcipher_request *req);
335 int (*decrypt)(struct ablkcipher_request *req);
336 int (*givencrypt)(struct skcipher_givcrypt_request *req);
337 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
339 struct crypto_ablkcipher *base;
342 unsigned int reqsize;
346 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
347 unsigned int keylen);
348 int (*encrypt)(struct aead_request *req);
349 int (*decrypt)(struct aead_request *req);
350 int (*givencrypt)(struct aead_givcrypt_request *req);
351 int (*givdecrypt)(struct aead_givcrypt_request *req);
353 struct crypto_aead *base;
356 unsigned int authsize;
357 unsigned int reqsize;
360 struct blkcipher_tfm {
362 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
363 unsigned int keylen);
364 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
365 struct scatterlist *src, unsigned int nbytes);
366 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
367 struct scatterlist *src, unsigned int nbytes);
371 int (*cit_setkey)(struct crypto_tfm *tfm,
372 const u8 *key, unsigned int keylen);
373 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
374 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
378 int (*init)(struct hash_desc *desc);
379 int (*update)(struct hash_desc *desc,
380 struct scatterlist *sg, unsigned int nsg);
381 int (*final)(struct hash_desc *desc, u8 *out);
382 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
383 unsigned int nsg, u8 *out);
384 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
385 unsigned int keylen);
386 unsigned int digestsize;
389 struct compress_tfm {
390 int (*cot_compress)(struct crypto_tfm *tfm,
391 const u8 *src, unsigned int slen,
392 u8 *dst, unsigned int *dlen);
393 int (*cot_decompress)(struct crypto_tfm *tfm,
394 const u8 *src, unsigned int slen,
395 u8 *dst, unsigned int *dlen);
399 int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
401 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
404 #define crt_ablkcipher crt_u.ablkcipher
405 #define crt_aead crt_u.aead
406 #define crt_blkcipher crt_u.blkcipher
407 #define crt_cipher crt_u.cipher
408 #define crt_hash crt_u.hash
409 #define crt_compress crt_u.compress
410 #define crt_rng crt_u.rng
417 struct ablkcipher_tfm ablkcipher;
418 struct aead_tfm aead;
419 struct blkcipher_tfm blkcipher;
420 struct cipher_tfm cipher;
421 struct hash_tfm hash;
422 struct compress_tfm compress;
426 void (*exit)(struct crypto_tfm *tfm);
428 struct crypto_alg *__crt_alg;
430 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
433 struct crypto_ablkcipher {
434 struct crypto_tfm base;
438 struct crypto_tfm base;
441 struct crypto_blkcipher {
442 struct crypto_tfm base;
445 struct crypto_cipher {
446 struct crypto_tfm base;
450 struct crypto_tfm base;
454 struct crypto_tfm base;
458 struct crypto_tfm base;
469 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
471 /* Maximum number of (rtattr) parameters for each template. */
472 #define CRYPTO_MAX_ATTRS 32
474 struct crypto_attr_alg {
475 char name[CRYPTO_MAX_ALG_NAME];
478 struct crypto_attr_type {
483 struct crypto_attr_u32 {
488 * Transform user interface.
491 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
492 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
494 static inline void crypto_free_tfm(struct crypto_tfm *tfm)
496 return crypto_destroy_tfm(tfm, tfm);
499 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
502 * Transform helpers which query the underlying algorithm.
504 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
506 return tfm->__crt_alg->cra_name;
509 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
511 return tfm->__crt_alg->cra_driver_name;
514 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
516 return tfm->__crt_alg->cra_priority;
519 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
521 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
524 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
526 return tfm->__crt_alg->cra_blocksize;
529 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
531 return tfm->__crt_alg->cra_alignmask;
534 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
536 return tfm->crt_flags;
539 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
541 tfm->crt_flags |= flags;
544 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
546 tfm->crt_flags &= ~flags;
549 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
551 return tfm->__crt_ctx;
554 static inline unsigned int crypto_tfm_ctx_alignment(void)
556 struct crypto_tfm *tfm;
557 return __alignof__(tfm->__crt_ctx);
563 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
564 struct crypto_tfm *tfm)
566 return (struct crypto_ablkcipher *)tfm;
569 static inline u32 crypto_skcipher_type(u32 type)
571 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
572 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
576 static inline u32 crypto_skcipher_mask(u32 mask)
578 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
579 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
583 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
586 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
587 struct crypto_ablkcipher *tfm)
592 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
594 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
597 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
600 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
601 crypto_skcipher_mask(mask));
604 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
605 struct crypto_ablkcipher *tfm)
607 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
610 static inline unsigned int crypto_ablkcipher_ivsize(
611 struct crypto_ablkcipher *tfm)
613 return crypto_ablkcipher_crt(tfm)->ivsize;
616 static inline unsigned int crypto_ablkcipher_blocksize(
617 struct crypto_ablkcipher *tfm)
619 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
622 static inline unsigned int crypto_ablkcipher_alignmask(
623 struct crypto_ablkcipher *tfm)
625 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
628 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
630 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
633 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
636 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
639 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
642 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
645 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
646 const u8 *key, unsigned int keylen)
648 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
650 return crt->setkey(crt->base, key, keylen);
653 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
654 struct ablkcipher_request *req)
656 return __crypto_ablkcipher_cast(req->base.tfm);
659 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
661 struct ablkcipher_tfm *crt =
662 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
663 return crt->encrypt(req);
666 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
668 struct ablkcipher_tfm *crt =
669 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
670 return crt->decrypt(req);
673 static inline unsigned int crypto_ablkcipher_reqsize(
674 struct crypto_ablkcipher *tfm)
676 return crypto_ablkcipher_crt(tfm)->reqsize;
679 static inline void ablkcipher_request_set_tfm(
680 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
682 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
685 static inline struct ablkcipher_request *ablkcipher_request_cast(
686 struct crypto_async_request *req)
688 return container_of(req, struct ablkcipher_request, base);
691 static inline struct ablkcipher_request *ablkcipher_request_alloc(
692 struct crypto_ablkcipher *tfm, gfp_t gfp)
694 struct ablkcipher_request *req;
696 req = kmalloc(sizeof(struct ablkcipher_request) +
697 crypto_ablkcipher_reqsize(tfm), gfp);
700 ablkcipher_request_set_tfm(req, tfm);
705 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
710 static inline void ablkcipher_request_set_callback(
711 struct ablkcipher_request *req,
712 u32 flags, crypto_completion_t complete, void *data)
714 req->base.complete = complete;
715 req->base.data = data;
716 req->base.flags = flags;
719 static inline void ablkcipher_request_set_crypt(
720 struct ablkcipher_request *req,
721 struct scatterlist *src, struct scatterlist *dst,
722 unsigned int nbytes, void *iv)
726 req->nbytes = nbytes;
730 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
732 return (struct crypto_aead *)tfm;
735 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
737 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
742 static inline void crypto_free_aead(struct crypto_aead *tfm)
744 crypto_free_tfm(crypto_aead_tfm(tfm));
747 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
749 return &crypto_aead_tfm(tfm)->crt_aead;
752 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
754 return crypto_aead_crt(tfm)->ivsize;
757 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
759 return crypto_aead_crt(tfm)->authsize;
762 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
764 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
767 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
769 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
772 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
774 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
777 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
779 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
782 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
784 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
787 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
790 struct aead_tfm *crt = crypto_aead_crt(tfm);
792 return crt->setkey(crt->base, key, keylen);
795 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
797 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
799 return __crypto_aead_cast(req->base.tfm);
802 static inline int crypto_aead_encrypt(struct aead_request *req)
804 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
807 static inline int crypto_aead_decrypt(struct aead_request *req)
809 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
812 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
814 return crypto_aead_crt(tfm)->reqsize;
817 static inline void aead_request_set_tfm(struct aead_request *req,
818 struct crypto_aead *tfm)
820 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
823 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
826 struct aead_request *req;
828 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
831 aead_request_set_tfm(req, tfm);
836 static inline void aead_request_free(struct aead_request *req)
841 static inline void aead_request_set_callback(struct aead_request *req,
843 crypto_completion_t complete,
846 req->base.complete = complete;
847 req->base.data = data;
848 req->base.flags = flags;
851 static inline void aead_request_set_crypt(struct aead_request *req,
852 struct scatterlist *src,
853 struct scatterlist *dst,
854 unsigned int cryptlen, u8 *iv)
858 req->cryptlen = cryptlen;
862 static inline void aead_request_set_assoc(struct aead_request *req,
863 struct scatterlist *assoc,
864 unsigned int assoclen)
867 req->assoclen = assoclen;
870 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
871 struct crypto_tfm *tfm)
873 return (struct crypto_blkcipher *)tfm;
876 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
877 struct crypto_tfm *tfm)
879 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
880 return __crypto_blkcipher_cast(tfm);
883 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
884 const char *alg_name, u32 type, u32 mask)
886 type &= ~CRYPTO_ALG_TYPE_MASK;
887 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
888 mask |= CRYPTO_ALG_TYPE_MASK;
890 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
893 static inline struct crypto_tfm *crypto_blkcipher_tfm(
894 struct crypto_blkcipher *tfm)
899 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
901 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
904 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
906 type &= ~CRYPTO_ALG_TYPE_MASK;
907 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
908 mask |= CRYPTO_ALG_TYPE_MASK;
910 return crypto_has_alg(alg_name, type, mask);
913 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
915 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
918 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
919 struct crypto_blkcipher *tfm)
921 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
924 static inline struct blkcipher_alg *crypto_blkcipher_alg(
925 struct crypto_blkcipher *tfm)
927 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
930 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
932 return crypto_blkcipher_alg(tfm)->ivsize;
935 static inline unsigned int crypto_blkcipher_blocksize(
936 struct crypto_blkcipher *tfm)
938 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
941 static inline unsigned int crypto_blkcipher_alignmask(
942 struct crypto_blkcipher *tfm)
944 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
947 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
949 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
952 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
955 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
958 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
961 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
964 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
965 const u8 *key, unsigned int keylen)
967 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
971 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
972 struct scatterlist *dst,
973 struct scatterlist *src,
976 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
977 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
980 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
981 struct scatterlist *dst,
982 struct scatterlist *src,
985 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
988 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
989 struct scatterlist *dst,
990 struct scatterlist *src,
993 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
994 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
997 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
998 struct scatterlist *dst,
999 struct scatterlist *src,
1000 unsigned int nbytes)
1002 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1005 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1006 const u8 *src, unsigned int len)
1008 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1011 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1012 u8 *dst, unsigned int len)
1014 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1017 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1019 return (struct crypto_cipher *)tfm;
1022 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1024 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1025 return __crypto_cipher_cast(tfm);
1028 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1031 type &= ~CRYPTO_ALG_TYPE_MASK;
1032 type |= CRYPTO_ALG_TYPE_CIPHER;
1033 mask |= CRYPTO_ALG_TYPE_MASK;
1035 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1038 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1043 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1045 crypto_free_tfm(crypto_cipher_tfm(tfm));
1048 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1050 type &= ~CRYPTO_ALG_TYPE_MASK;
1051 type |= CRYPTO_ALG_TYPE_CIPHER;
1052 mask |= CRYPTO_ALG_TYPE_MASK;
1054 return crypto_has_alg(alg_name, type, mask);
1057 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1059 return &crypto_cipher_tfm(tfm)->crt_cipher;
1062 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1064 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1067 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1069 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1072 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1074 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1077 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1080 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1083 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1086 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1089 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1090 const u8 *key, unsigned int keylen)
1092 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1096 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1097 u8 *dst, const u8 *src)
1099 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1103 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1104 u8 *dst, const u8 *src)
1106 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1110 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1112 return (struct crypto_hash *)tfm;
1115 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1117 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1118 CRYPTO_ALG_TYPE_HASH_MASK);
1119 return __crypto_hash_cast(tfm);
1122 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1125 type &= ~CRYPTO_ALG_TYPE_MASK;
1126 mask &= ~CRYPTO_ALG_TYPE_MASK;
1127 type |= CRYPTO_ALG_TYPE_HASH;
1128 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1130 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1133 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1138 static inline void crypto_free_hash(struct crypto_hash *tfm)
1140 crypto_free_tfm(crypto_hash_tfm(tfm));
1143 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1145 type &= ~CRYPTO_ALG_TYPE_MASK;
1146 mask &= ~CRYPTO_ALG_TYPE_MASK;
1147 type |= CRYPTO_ALG_TYPE_HASH;
1148 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1150 return crypto_has_alg(alg_name, type, mask);
1153 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1155 return &crypto_hash_tfm(tfm)->crt_hash;
1158 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1160 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1163 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1165 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1168 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1170 return crypto_hash_crt(tfm)->digestsize;
1173 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1175 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1178 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1180 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1183 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1185 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1188 static inline int crypto_hash_init(struct hash_desc *desc)
1190 return crypto_hash_crt(desc->tfm)->init(desc);
1193 static inline int crypto_hash_update(struct hash_desc *desc,
1194 struct scatterlist *sg,
1195 unsigned int nbytes)
1197 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1200 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1202 return crypto_hash_crt(desc->tfm)->final(desc, out);
1205 static inline int crypto_hash_digest(struct hash_desc *desc,
1206 struct scatterlist *sg,
1207 unsigned int nbytes, u8 *out)
1209 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1212 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1213 const u8 *key, unsigned int keylen)
1215 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1218 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1220 return (struct crypto_comp *)tfm;
1223 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1225 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1226 CRYPTO_ALG_TYPE_MASK);
1227 return __crypto_comp_cast(tfm);
1230 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1233 type &= ~CRYPTO_ALG_TYPE_MASK;
1234 type |= CRYPTO_ALG_TYPE_COMPRESS;
1235 mask |= CRYPTO_ALG_TYPE_MASK;
1237 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1240 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1245 static inline void crypto_free_comp(struct crypto_comp *tfm)
1247 crypto_free_tfm(crypto_comp_tfm(tfm));
1250 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1252 type &= ~CRYPTO_ALG_TYPE_MASK;
1253 type |= CRYPTO_ALG_TYPE_COMPRESS;
1254 mask |= CRYPTO_ALG_TYPE_MASK;
1256 return crypto_has_alg(alg_name, type, mask);
1259 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1261 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1264 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1266 return &crypto_comp_tfm(tfm)->crt_compress;
1269 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1270 const u8 *src, unsigned int slen,
1271 u8 *dst, unsigned int *dlen)
1273 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1274 src, slen, dst, dlen);
1277 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1278 const u8 *src, unsigned int slen,
1279 u8 *dst, unsigned int *dlen)
1281 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1282 src, slen, dst, dlen);
1285 #endif /* _LINUX_CRYPTO_H */