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/bug.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_COMPRESS 0x00000002
34 #define CRYPTO_ALG_TYPE_AEAD 0x00000003
35 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
36 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
37 #define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
38 #define CRYPTO_ALG_TYPE_DIGEST 0x00000008
39 #define CRYPTO_ALG_TYPE_HASH 0x00000008
40 #define CRYPTO_ALG_TYPE_SHASH 0x00000009
41 #define CRYPTO_ALG_TYPE_AHASH 0x0000000a
42 #define CRYPTO_ALG_TYPE_RNG 0x0000000c
43 #define CRYPTO_ALG_TYPE_PCOMPRESS 0x0000000f
45 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
46 #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
47 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
49 #define CRYPTO_ALG_LARVAL 0x00000010
50 #define CRYPTO_ALG_DEAD 0x00000020
51 #define CRYPTO_ALG_DYING 0x00000040
52 #define CRYPTO_ALG_ASYNC 0x00000080
55 * Set this bit if and only if the algorithm requires another algorithm of
56 * the same type to handle corner cases.
58 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
61 * This bit is set for symmetric key ciphers that have already been wrapped
62 * with a generic IV generator to prevent them from being wrapped again.
64 #define CRYPTO_ALG_GENIV 0x00000200
67 * Set if the algorithm has passed automated run-time testing. Note that
68 * if there is no run-time testing for a given algorithm it is considered
72 #define CRYPTO_ALG_TESTED 0x00000400
75 * Set if the algorithm is an instance that is build from templates.
77 #define CRYPTO_ALG_INSTANCE 0x00000800
79 /* Set this bit if the algorithm provided is hardware accelerated but
80 * not available to userspace via instruction set or so.
82 #define CRYPTO_ALG_KERN_DRIVER_ONLY 0x00001000
85 * Transform masks and values (for crt_flags).
87 #define CRYPTO_TFM_REQ_MASK 0x000fff00
88 #define CRYPTO_TFM_RES_MASK 0xfff00000
90 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
91 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
92 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
93 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
94 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
95 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
96 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
97 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
100 * Miscellaneous stuff.
102 #define CRYPTO_MAX_ALG_NAME 64
105 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
106 * declaration) is used to ensure that the crypto_tfm context structure is
107 * aligned correctly for the given architecture so that there are no alignment
108 * faults for C data types. In particular, this is required on platforms such
109 * as arm where pointers are 32-bit aligned but there are data types such as
110 * u64 which require 64-bit alignment.
112 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
114 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
117 struct crypto_ablkcipher;
118 struct crypto_async_request;
120 struct crypto_blkcipher;
125 struct aead_givcrypt_request;
126 struct skcipher_givcrypt_request;
128 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
130 struct crypto_async_request {
131 struct list_head list;
132 crypto_completion_t complete;
134 struct crypto_tfm *tfm;
139 struct ablkcipher_request {
140 struct crypto_async_request base;
146 struct scatterlist *src;
147 struct scatterlist *dst;
149 void *__ctx[] CRYPTO_MINALIGN_ATTR;
153 * struct aead_request - AEAD request
154 * @base: Common attributes for async crypto requests
155 * @assoclen: Length in bytes of associated data for authentication
156 * @cryptlen: Length of data to be encrypted or decrypted
157 * @iv: Initialisation vector
158 * @assoc: Associated data
160 * @dst: Destination data
161 * @__ctx: Start of private context data
163 struct aead_request {
164 struct crypto_async_request base;
166 unsigned int assoclen;
167 unsigned int cryptlen;
171 struct scatterlist *assoc;
172 struct scatterlist *src;
173 struct scatterlist *dst;
175 void *__ctx[] CRYPTO_MINALIGN_ATTR;
178 struct blkcipher_desc {
179 struct crypto_blkcipher *tfm;
185 struct crypto_tfm *tfm;
186 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
187 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
188 const u8 *src, unsigned int nbytes);
193 struct crypto_hash *tfm;
198 * Algorithms: modular crypto algorithm implementations, managed
199 * via crypto_register_alg() and crypto_unregister_alg().
201 struct ablkcipher_alg {
202 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
203 unsigned int keylen);
204 int (*encrypt)(struct ablkcipher_request *req);
205 int (*decrypt)(struct ablkcipher_request *req);
206 int (*givencrypt)(struct skcipher_givcrypt_request *req);
207 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
211 unsigned int min_keysize;
212 unsigned int max_keysize;
217 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
218 unsigned int keylen);
219 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
220 int (*encrypt)(struct aead_request *req);
221 int (*decrypt)(struct aead_request *req);
222 int (*givencrypt)(struct aead_givcrypt_request *req);
223 int (*givdecrypt)(struct aead_givcrypt_request *req);
228 unsigned int maxauthsize;
231 struct blkcipher_alg {
232 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
233 unsigned int keylen);
234 int (*encrypt)(struct blkcipher_desc *desc,
235 struct scatterlist *dst, struct scatterlist *src,
236 unsigned int nbytes);
237 int (*decrypt)(struct blkcipher_desc *desc,
238 struct scatterlist *dst, struct scatterlist *src,
239 unsigned int nbytes);
243 unsigned int min_keysize;
244 unsigned int max_keysize;
249 unsigned int cia_min_keysize;
250 unsigned int cia_max_keysize;
251 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
252 unsigned int keylen);
253 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
254 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
257 struct compress_alg {
258 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
259 unsigned int slen, u8 *dst, unsigned int *dlen);
260 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
261 unsigned int slen, u8 *dst, unsigned int *dlen);
265 int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
267 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
269 unsigned int seedsize;
273 #define cra_ablkcipher cra_u.ablkcipher
274 #define cra_aead cra_u.aead
275 #define cra_blkcipher cra_u.blkcipher
276 #define cra_cipher cra_u.cipher
277 #define cra_compress cra_u.compress
278 #define cra_rng cra_u.rng
281 struct list_head cra_list;
282 struct list_head cra_users;
285 unsigned int cra_blocksize;
286 unsigned int cra_ctxsize;
287 unsigned int cra_alignmask;
292 char cra_name[CRYPTO_MAX_ALG_NAME];
293 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
295 const struct crypto_type *cra_type;
298 struct ablkcipher_alg ablkcipher;
299 struct aead_alg aead;
300 struct blkcipher_alg blkcipher;
301 struct cipher_alg cipher;
302 struct compress_alg compress;
306 int (*cra_init)(struct crypto_tfm *tfm);
307 void (*cra_exit)(struct crypto_tfm *tfm);
308 void (*cra_destroy)(struct crypto_alg *alg);
310 struct module *cra_module;
314 * Algorithm registration interface.
316 int crypto_register_alg(struct crypto_alg *alg);
317 int crypto_unregister_alg(struct crypto_alg *alg);
318 int crypto_register_algs(struct crypto_alg *algs, int count);
319 int crypto_unregister_algs(struct crypto_alg *algs, int count);
322 * Algorithm query interface.
324 int crypto_has_alg(const char *name, u32 type, u32 mask);
327 * Transforms: user-instantiated objects which encapsulate algorithms
328 * and core processing logic. Managed via crypto_alloc_*() and
329 * crypto_free_*(), as well as the various helpers below.
332 struct ablkcipher_tfm {
333 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
334 unsigned int keylen);
335 int (*encrypt)(struct ablkcipher_request *req);
336 int (*decrypt)(struct ablkcipher_request *req);
337 int (*givencrypt)(struct skcipher_givcrypt_request *req);
338 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
340 struct crypto_ablkcipher *base;
343 unsigned int reqsize;
347 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
348 unsigned int keylen);
349 int (*encrypt)(struct aead_request *req);
350 int (*decrypt)(struct aead_request *req);
351 int (*givencrypt)(struct aead_givcrypt_request *req);
352 int (*givdecrypt)(struct aead_givcrypt_request *req);
354 struct crypto_aead *base;
357 unsigned int authsize;
358 unsigned int reqsize;
361 struct blkcipher_tfm {
363 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
364 unsigned int keylen);
365 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
366 struct scatterlist *src, unsigned int nbytes);
367 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
368 struct scatterlist *src, unsigned int nbytes);
372 int (*cit_setkey)(struct crypto_tfm *tfm,
373 const u8 *key, unsigned int keylen);
374 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
375 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
379 int (*init)(struct hash_desc *desc);
380 int (*update)(struct hash_desc *desc,
381 struct scatterlist *sg, unsigned int nsg);
382 int (*final)(struct hash_desc *desc, u8 *out);
383 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
384 unsigned int nsg, u8 *out);
385 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
386 unsigned int keylen);
387 unsigned int digestsize;
390 struct compress_tfm {
391 int (*cot_compress)(struct crypto_tfm *tfm,
392 const u8 *src, unsigned int slen,
393 u8 *dst, unsigned int *dlen);
394 int (*cot_decompress)(struct crypto_tfm *tfm,
395 const u8 *src, unsigned int slen,
396 u8 *dst, unsigned int *dlen);
400 int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
402 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
405 #define crt_ablkcipher crt_u.ablkcipher
406 #define crt_aead crt_u.aead
407 #define crt_blkcipher crt_u.blkcipher
408 #define crt_cipher crt_u.cipher
409 #define crt_hash crt_u.hash
410 #define crt_compress crt_u.compress
411 #define crt_rng crt_u.rng
418 struct ablkcipher_tfm ablkcipher;
419 struct aead_tfm aead;
420 struct blkcipher_tfm blkcipher;
421 struct cipher_tfm cipher;
422 struct hash_tfm hash;
423 struct compress_tfm compress;
427 void (*exit)(struct crypto_tfm *tfm);
429 struct crypto_alg *__crt_alg;
431 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
434 struct crypto_ablkcipher {
435 struct crypto_tfm base;
439 struct crypto_tfm base;
442 struct crypto_blkcipher {
443 struct crypto_tfm base;
446 struct crypto_cipher {
447 struct crypto_tfm base;
451 struct crypto_tfm base;
455 struct crypto_tfm base;
459 struct crypto_tfm base;
470 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
472 /* Maximum number of (rtattr) parameters for each template. */
473 #define CRYPTO_MAX_ATTRS 32
475 struct crypto_attr_alg {
476 char name[CRYPTO_MAX_ALG_NAME];
479 struct crypto_attr_type {
484 struct crypto_attr_u32 {
489 * Transform user interface.
492 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
493 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
495 static inline void crypto_free_tfm(struct crypto_tfm *tfm)
497 return crypto_destroy_tfm(tfm, tfm);
500 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
503 * Transform helpers which query the underlying algorithm.
505 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
507 return tfm->__crt_alg->cra_name;
510 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
512 return tfm->__crt_alg->cra_driver_name;
515 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
517 return tfm->__crt_alg->cra_priority;
520 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
522 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
525 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
527 return tfm->__crt_alg->cra_blocksize;
530 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
532 return tfm->__crt_alg->cra_alignmask;
535 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
537 return tfm->crt_flags;
540 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
542 tfm->crt_flags |= flags;
545 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
547 tfm->crt_flags &= ~flags;
550 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
552 return tfm->__crt_ctx;
555 static inline unsigned int crypto_tfm_ctx_alignment(void)
557 struct crypto_tfm *tfm;
558 return __alignof__(tfm->__crt_ctx);
564 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
565 struct crypto_tfm *tfm)
567 return (struct crypto_ablkcipher *)tfm;
570 static inline u32 crypto_skcipher_type(u32 type)
572 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
573 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
577 static inline u32 crypto_skcipher_mask(u32 mask)
579 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
580 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
584 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
587 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
588 struct crypto_ablkcipher *tfm)
593 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
595 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
598 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
601 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
602 crypto_skcipher_mask(mask));
605 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
606 struct crypto_ablkcipher *tfm)
608 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
611 static inline unsigned int crypto_ablkcipher_ivsize(
612 struct crypto_ablkcipher *tfm)
614 return crypto_ablkcipher_crt(tfm)->ivsize;
617 static inline unsigned int crypto_ablkcipher_blocksize(
618 struct crypto_ablkcipher *tfm)
620 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
623 static inline unsigned int crypto_ablkcipher_alignmask(
624 struct crypto_ablkcipher *tfm)
626 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
629 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
631 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
634 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
637 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
640 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
643 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
646 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
647 const u8 *key, unsigned int keylen)
649 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
651 return crt->setkey(crt->base, key, keylen);
654 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
655 struct ablkcipher_request *req)
657 return __crypto_ablkcipher_cast(req->base.tfm);
660 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
662 struct ablkcipher_tfm *crt =
663 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
664 return crt->encrypt(req);
667 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
669 struct ablkcipher_tfm *crt =
670 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
671 return crt->decrypt(req);
674 static inline unsigned int crypto_ablkcipher_reqsize(
675 struct crypto_ablkcipher *tfm)
677 return crypto_ablkcipher_crt(tfm)->reqsize;
680 static inline void ablkcipher_request_set_tfm(
681 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
683 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
686 static inline struct ablkcipher_request *ablkcipher_request_cast(
687 struct crypto_async_request *req)
689 return container_of(req, struct ablkcipher_request, base);
692 static inline struct ablkcipher_request *ablkcipher_request_alloc(
693 struct crypto_ablkcipher *tfm, gfp_t gfp)
695 struct ablkcipher_request *req;
697 req = kmalloc(sizeof(struct ablkcipher_request) +
698 crypto_ablkcipher_reqsize(tfm), gfp);
701 ablkcipher_request_set_tfm(req, tfm);
706 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
711 static inline void ablkcipher_request_set_callback(
712 struct ablkcipher_request *req,
713 u32 flags, crypto_completion_t complete, void *data)
715 req->base.complete = complete;
716 req->base.data = data;
717 req->base.flags = flags;
720 static inline void ablkcipher_request_set_crypt(
721 struct ablkcipher_request *req,
722 struct scatterlist *src, struct scatterlist *dst,
723 unsigned int nbytes, void *iv)
727 req->nbytes = nbytes;
731 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
733 return (struct crypto_aead *)tfm;
736 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
738 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
743 static inline void crypto_free_aead(struct crypto_aead *tfm)
745 crypto_free_tfm(crypto_aead_tfm(tfm));
748 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
750 return &crypto_aead_tfm(tfm)->crt_aead;
753 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
755 return crypto_aead_crt(tfm)->ivsize;
758 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
760 return crypto_aead_crt(tfm)->authsize;
763 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
765 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
768 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
770 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
773 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
775 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
778 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
780 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
783 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
785 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
788 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
791 struct aead_tfm *crt = crypto_aead_crt(tfm);
793 return crt->setkey(crt->base, key, keylen);
796 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
798 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
800 return __crypto_aead_cast(req->base.tfm);
803 static inline int crypto_aead_encrypt(struct aead_request *req)
805 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
808 static inline int crypto_aead_decrypt(struct aead_request *req)
810 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
813 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
815 return crypto_aead_crt(tfm)->reqsize;
818 static inline void aead_request_set_tfm(struct aead_request *req,
819 struct crypto_aead *tfm)
821 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
824 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
827 struct aead_request *req;
829 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
832 aead_request_set_tfm(req, tfm);
837 static inline void aead_request_free(struct aead_request *req)
842 static inline void aead_request_set_callback(struct aead_request *req,
844 crypto_completion_t complete,
847 req->base.complete = complete;
848 req->base.data = data;
849 req->base.flags = flags;
852 static inline void aead_request_set_crypt(struct aead_request *req,
853 struct scatterlist *src,
854 struct scatterlist *dst,
855 unsigned int cryptlen, u8 *iv)
859 req->cryptlen = cryptlen;
863 static inline void aead_request_set_assoc(struct aead_request *req,
864 struct scatterlist *assoc,
865 unsigned int assoclen)
868 req->assoclen = assoclen;
871 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
872 struct crypto_tfm *tfm)
874 return (struct crypto_blkcipher *)tfm;
877 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
878 struct crypto_tfm *tfm)
880 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
881 return __crypto_blkcipher_cast(tfm);
884 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
885 const char *alg_name, u32 type, u32 mask)
887 type &= ~CRYPTO_ALG_TYPE_MASK;
888 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
889 mask |= CRYPTO_ALG_TYPE_MASK;
891 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
894 static inline struct crypto_tfm *crypto_blkcipher_tfm(
895 struct crypto_blkcipher *tfm)
900 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
902 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
905 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
907 type &= ~CRYPTO_ALG_TYPE_MASK;
908 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
909 mask |= CRYPTO_ALG_TYPE_MASK;
911 return crypto_has_alg(alg_name, type, mask);
914 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
916 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
919 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
920 struct crypto_blkcipher *tfm)
922 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
925 static inline struct blkcipher_alg *crypto_blkcipher_alg(
926 struct crypto_blkcipher *tfm)
928 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
931 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
933 return crypto_blkcipher_alg(tfm)->ivsize;
936 static inline unsigned int crypto_blkcipher_blocksize(
937 struct crypto_blkcipher *tfm)
939 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
942 static inline unsigned int crypto_blkcipher_alignmask(
943 struct crypto_blkcipher *tfm)
945 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
948 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
950 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
953 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
956 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
959 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
962 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
965 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
966 const u8 *key, unsigned int keylen)
968 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
972 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
973 struct scatterlist *dst,
974 struct scatterlist *src,
977 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
978 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
981 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
982 struct scatterlist *dst,
983 struct scatterlist *src,
986 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
989 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
990 struct scatterlist *dst,
991 struct scatterlist *src,
994 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
995 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
998 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
999 struct scatterlist *dst,
1000 struct scatterlist *src,
1001 unsigned int nbytes)
1003 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1006 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1007 const u8 *src, unsigned int len)
1009 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1012 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1013 u8 *dst, unsigned int len)
1015 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1018 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1020 return (struct crypto_cipher *)tfm;
1023 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1025 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1026 return __crypto_cipher_cast(tfm);
1029 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1032 type &= ~CRYPTO_ALG_TYPE_MASK;
1033 type |= CRYPTO_ALG_TYPE_CIPHER;
1034 mask |= CRYPTO_ALG_TYPE_MASK;
1036 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1039 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1044 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1046 crypto_free_tfm(crypto_cipher_tfm(tfm));
1049 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1051 type &= ~CRYPTO_ALG_TYPE_MASK;
1052 type |= CRYPTO_ALG_TYPE_CIPHER;
1053 mask |= CRYPTO_ALG_TYPE_MASK;
1055 return crypto_has_alg(alg_name, type, mask);
1058 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1060 return &crypto_cipher_tfm(tfm)->crt_cipher;
1063 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1065 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1068 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1070 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1073 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1075 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1078 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1081 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1084 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1087 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1090 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1091 const u8 *key, unsigned int keylen)
1093 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1097 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1098 u8 *dst, const u8 *src)
1100 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1104 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1105 u8 *dst, const u8 *src)
1107 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1111 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1113 return (struct crypto_hash *)tfm;
1116 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1118 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1119 CRYPTO_ALG_TYPE_HASH_MASK);
1120 return __crypto_hash_cast(tfm);
1123 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1126 type &= ~CRYPTO_ALG_TYPE_MASK;
1127 mask &= ~CRYPTO_ALG_TYPE_MASK;
1128 type |= CRYPTO_ALG_TYPE_HASH;
1129 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1131 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1134 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1139 static inline void crypto_free_hash(struct crypto_hash *tfm)
1141 crypto_free_tfm(crypto_hash_tfm(tfm));
1144 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1146 type &= ~CRYPTO_ALG_TYPE_MASK;
1147 mask &= ~CRYPTO_ALG_TYPE_MASK;
1148 type |= CRYPTO_ALG_TYPE_HASH;
1149 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1151 return crypto_has_alg(alg_name, type, mask);
1154 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1156 return &crypto_hash_tfm(tfm)->crt_hash;
1159 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1161 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1164 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1166 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1169 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1171 return crypto_hash_crt(tfm)->digestsize;
1174 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1176 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1179 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1181 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1184 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1186 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1189 static inline int crypto_hash_init(struct hash_desc *desc)
1191 return crypto_hash_crt(desc->tfm)->init(desc);
1194 static inline int crypto_hash_update(struct hash_desc *desc,
1195 struct scatterlist *sg,
1196 unsigned int nbytes)
1198 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1201 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1203 return crypto_hash_crt(desc->tfm)->final(desc, out);
1206 static inline int crypto_hash_digest(struct hash_desc *desc,
1207 struct scatterlist *sg,
1208 unsigned int nbytes, u8 *out)
1210 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1213 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1214 const u8 *key, unsigned int keylen)
1216 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1219 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1221 return (struct crypto_comp *)tfm;
1224 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1226 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1227 CRYPTO_ALG_TYPE_MASK);
1228 return __crypto_comp_cast(tfm);
1231 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1234 type &= ~CRYPTO_ALG_TYPE_MASK;
1235 type |= CRYPTO_ALG_TYPE_COMPRESS;
1236 mask |= CRYPTO_ALG_TYPE_MASK;
1238 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1241 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1246 static inline void crypto_free_comp(struct crypto_comp *tfm)
1248 crypto_free_tfm(crypto_comp_tfm(tfm));
1251 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1253 type &= ~CRYPTO_ALG_TYPE_MASK;
1254 type |= CRYPTO_ALG_TYPE_COMPRESS;
1255 mask |= CRYPTO_ALG_TYPE_MASK;
1257 return crypto_has_alg(alg_name, type, mask);
1260 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1262 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1265 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1267 return &crypto_comp_tfm(tfm)->crt_compress;
1270 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1271 const u8 *src, unsigned int slen,
1272 u8 *dst, unsigned int *dlen)
1274 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1275 src, slen, dst, dlen);
1278 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1279 const u8 *src, unsigned int slen,
1280 u8 *dst, unsigned int *dlen)
1282 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1283 src, slen, dst, dlen);
1286 #endif /* _LINUX_CRYPTO_H */