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_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
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 * Transform masks and values (for crt_flags).
76 #define CRYPTO_TFM_REQ_MASK 0x000fff00
77 #define CRYPTO_TFM_RES_MASK 0xfff00000
79 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
80 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
81 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
82 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
83 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
84 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
85 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
86 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
89 * Miscellaneous stuff.
91 #define CRYPTO_MAX_ALG_NAME 64
94 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
95 * declaration) is used to ensure that the crypto_tfm context structure is
96 * aligned correctly for the given architecture so that there are no alignment
97 * faults for C data types. In particular, this is required on platforms such
98 * as arm where pointers are 32-bit aligned but there are data types such as
99 * u64 which require 64-bit alignment.
101 #if defined(ARCH_KMALLOC_MINALIGN)
102 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
103 #elif defined(ARCH_SLAB_MINALIGN)
104 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
106 #define CRYPTO_MINALIGN __alignof__(unsigned long long)
109 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
112 struct crypto_ablkcipher;
113 struct crypto_async_request;
115 struct crypto_blkcipher;
121 struct aead_givcrypt_request;
122 struct skcipher_givcrypt_request;
124 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
126 struct crypto_async_request {
127 struct list_head list;
128 crypto_completion_t complete;
130 struct crypto_tfm *tfm;
135 struct ablkcipher_request {
136 struct crypto_async_request base;
142 struct scatterlist *src;
143 struct scatterlist *dst;
145 void *__ctx[] CRYPTO_MINALIGN_ATTR;
148 struct ahash_request {
149 struct crypto_async_request base;
152 struct scatterlist *src;
155 void *__ctx[] CRYPTO_MINALIGN_ATTR;
159 * struct aead_request - AEAD request
160 * @base: Common attributes for async crypto requests
161 * @assoclen: Length in bytes of associated data for authentication
162 * @cryptlen: Length of data to be encrypted or decrypted
163 * @iv: Initialisation vector
164 * @assoc: Associated data
166 * @dst: Destination data
167 * @__ctx: Start of private context data
169 struct aead_request {
170 struct crypto_async_request base;
172 unsigned int assoclen;
173 unsigned int cryptlen;
177 struct scatterlist *assoc;
178 struct scatterlist *src;
179 struct scatterlist *dst;
181 void *__ctx[] CRYPTO_MINALIGN_ATTR;
184 struct blkcipher_desc {
185 struct crypto_blkcipher *tfm;
191 struct crypto_tfm *tfm;
192 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
193 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
194 const u8 *src, unsigned int nbytes);
199 struct crypto_hash *tfm;
204 * Algorithms: modular crypto algorithm implementations, managed
205 * via crypto_register_alg() and crypto_unregister_alg().
207 struct ablkcipher_alg {
208 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
209 unsigned int keylen);
210 int (*encrypt)(struct ablkcipher_request *req);
211 int (*decrypt)(struct ablkcipher_request *req);
212 int (*givencrypt)(struct skcipher_givcrypt_request *req);
213 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
217 unsigned int min_keysize;
218 unsigned int max_keysize;
223 int (*init)(struct ahash_request *req);
224 int (*reinit)(struct ahash_request *req);
225 int (*update)(struct ahash_request *req);
226 int (*final)(struct ahash_request *req);
227 int (*digest)(struct ahash_request *req);
228 int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
229 unsigned int keylen);
231 unsigned int digestsize;
235 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
236 unsigned int keylen);
237 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
238 int (*encrypt)(struct aead_request *req);
239 int (*decrypt)(struct aead_request *req);
240 int (*givencrypt)(struct aead_givcrypt_request *req);
241 int (*givdecrypt)(struct aead_givcrypt_request *req);
246 unsigned int maxauthsize;
249 struct blkcipher_alg {
250 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
251 unsigned int keylen);
252 int (*encrypt)(struct blkcipher_desc *desc,
253 struct scatterlist *dst, struct scatterlist *src,
254 unsigned int nbytes);
255 int (*decrypt)(struct blkcipher_desc *desc,
256 struct scatterlist *dst, struct scatterlist *src,
257 unsigned int nbytes);
261 unsigned int min_keysize;
262 unsigned int max_keysize;
267 unsigned int cia_min_keysize;
268 unsigned int cia_max_keysize;
269 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
270 unsigned int keylen);
271 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
272 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
276 unsigned int dia_digestsize;
277 void (*dia_init)(struct crypto_tfm *tfm);
278 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
280 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
281 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
282 unsigned int keylen);
286 int (*init)(struct hash_desc *desc);
287 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
288 unsigned int nbytes);
289 int (*final)(struct hash_desc *desc, u8 *out);
290 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
291 unsigned int nbytes, u8 *out);
292 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
293 unsigned int keylen);
295 unsigned int digestsize;
298 struct compress_alg {
299 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
300 unsigned int slen, u8 *dst, unsigned int *dlen);
301 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
302 unsigned int slen, u8 *dst, unsigned int *dlen);
306 int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
308 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
310 unsigned int seedsize;
314 #define cra_ablkcipher cra_u.ablkcipher
315 #define cra_aead cra_u.aead
316 #define cra_blkcipher cra_u.blkcipher
317 #define cra_cipher cra_u.cipher
318 #define cra_digest cra_u.digest
319 #define cra_hash cra_u.hash
320 #define cra_ahash cra_u.ahash
321 #define cra_compress cra_u.compress
322 #define cra_rng cra_u.rng
325 struct list_head cra_list;
326 struct list_head cra_users;
329 unsigned int cra_blocksize;
330 unsigned int cra_ctxsize;
331 unsigned int cra_alignmask;
336 char cra_name[CRYPTO_MAX_ALG_NAME];
337 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
339 const struct crypto_type *cra_type;
342 struct ablkcipher_alg ablkcipher;
343 struct aead_alg aead;
344 struct blkcipher_alg blkcipher;
345 struct cipher_alg cipher;
346 struct digest_alg digest;
347 struct hash_alg hash;
348 struct ahash_alg ahash;
349 struct compress_alg compress;
353 int (*cra_init)(struct crypto_tfm *tfm);
354 void (*cra_exit)(struct crypto_tfm *tfm);
355 void (*cra_destroy)(struct crypto_alg *alg);
357 struct module *cra_module;
361 * Algorithm registration interface.
363 int crypto_register_alg(struct crypto_alg *alg);
364 int crypto_unregister_alg(struct crypto_alg *alg);
367 * Algorithm query interface.
369 int crypto_has_alg(const char *name, u32 type, u32 mask);
372 * Transforms: user-instantiated objects which encapsulate algorithms
373 * and core processing logic. Managed via crypto_alloc_*() and
374 * crypto_free_*(), as well as the various helpers below.
377 struct ablkcipher_tfm {
378 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
379 unsigned int keylen);
380 int (*encrypt)(struct ablkcipher_request *req);
381 int (*decrypt)(struct ablkcipher_request *req);
382 int (*givencrypt)(struct skcipher_givcrypt_request *req);
383 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
385 struct crypto_ablkcipher *base;
388 unsigned int reqsize;
392 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
393 unsigned int keylen);
394 int (*encrypt)(struct aead_request *req);
395 int (*decrypt)(struct aead_request *req);
396 int (*givencrypt)(struct aead_givcrypt_request *req);
397 int (*givdecrypt)(struct aead_givcrypt_request *req);
399 struct crypto_aead *base;
402 unsigned int authsize;
403 unsigned int reqsize;
406 struct blkcipher_tfm {
408 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
409 unsigned int keylen);
410 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
411 struct scatterlist *src, unsigned int nbytes);
412 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
413 struct scatterlist *src, unsigned int nbytes);
417 int (*cit_setkey)(struct crypto_tfm *tfm,
418 const u8 *key, unsigned int keylen);
419 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
420 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
424 int (*init)(struct hash_desc *desc);
425 int (*update)(struct hash_desc *desc,
426 struct scatterlist *sg, unsigned int nsg);
427 int (*final)(struct hash_desc *desc, u8 *out);
428 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
429 unsigned int nsg, u8 *out);
430 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
431 unsigned int keylen);
432 unsigned int digestsize;
436 int (*init)(struct ahash_request *req);
437 int (*update)(struct ahash_request *req);
438 int (*final)(struct ahash_request *req);
439 int (*digest)(struct ahash_request *req);
440 int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
441 unsigned int keylen);
443 unsigned int digestsize;
444 unsigned int reqsize;
447 struct compress_tfm {
448 int (*cot_compress)(struct crypto_tfm *tfm,
449 const u8 *src, unsigned int slen,
450 u8 *dst, unsigned int *dlen);
451 int (*cot_decompress)(struct crypto_tfm *tfm,
452 const u8 *src, unsigned int slen,
453 u8 *dst, unsigned int *dlen);
457 int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
459 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
462 #define crt_ablkcipher crt_u.ablkcipher
463 #define crt_aead crt_u.aead
464 #define crt_blkcipher crt_u.blkcipher
465 #define crt_cipher crt_u.cipher
466 #define crt_hash crt_u.hash
467 #define crt_ahash crt_u.ahash
468 #define crt_compress crt_u.compress
469 #define crt_rng crt_u.rng
476 struct ablkcipher_tfm ablkcipher;
477 struct aead_tfm aead;
478 struct blkcipher_tfm blkcipher;
479 struct cipher_tfm cipher;
480 struct hash_tfm hash;
481 struct ahash_tfm ahash;
482 struct compress_tfm compress;
486 void (*exit)(struct crypto_tfm *tfm);
488 struct crypto_alg *__crt_alg;
490 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
493 struct crypto_ablkcipher {
494 struct crypto_tfm base;
498 struct crypto_tfm base;
501 struct crypto_blkcipher {
502 struct crypto_tfm base;
505 struct crypto_cipher {
506 struct crypto_tfm base;
510 struct crypto_tfm base;
514 struct crypto_tfm base;
518 struct crypto_tfm base;
529 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
531 /* Maximum number of (rtattr) parameters for each template. */
532 #define CRYPTO_MAX_ATTRS 32
534 struct crypto_attr_alg {
535 char name[CRYPTO_MAX_ALG_NAME];
538 struct crypto_attr_type {
543 struct crypto_attr_u32 {
548 * Transform user interface.
551 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name,
552 const struct crypto_type *frontend,
554 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
555 void crypto_free_tfm(struct crypto_tfm *tfm);
557 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
560 * Transform helpers which query the underlying algorithm.
562 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
564 return tfm->__crt_alg->cra_name;
567 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
569 return tfm->__crt_alg->cra_driver_name;
572 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
574 return tfm->__crt_alg->cra_priority;
577 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
579 return module_name(tfm->__crt_alg->cra_module);
582 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
584 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
587 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
589 return tfm->__crt_alg->cra_blocksize;
592 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
594 return tfm->__crt_alg->cra_alignmask;
597 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
599 return tfm->crt_flags;
602 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
604 tfm->crt_flags |= flags;
607 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
609 tfm->crt_flags &= ~flags;
612 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
614 return tfm->__crt_ctx;
617 static inline unsigned int crypto_tfm_ctx_alignment(void)
619 struct crypto_tfm *tfm;
620 return __alignof__(tfm->__crt_ctx);
626 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
627 struct crypto_tfm *tfm)
629 return (struct crypto_ablkcipher *)tfm;
632 static inline u32 crypto_skcipher_type(u32 type)
634 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
635 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
639 static inline u32 crypto_skcipher_mask(u32 mask)
641 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
642 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
646 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
649 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
650 struct crypto_ablkcipher *tfm)
655 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
657 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
660 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
663 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
664 crypto_skcipher_mask(mask));
667 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
668 struct crypto_ablkcipher *tfm)
670 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
673 static inline unsigned int crypto_ablkcipher_ivsize(
674 struct crypto_ablkcipher *tfm)
676 return crypto_ablkcipher_crt(tfm)->ivsize;
679 static inline unsigned int crypto_ablkcipher_blocksize(
680 struct crypto_ablkcipher *tfm)
682 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
685 static inline unsigned int crypto_ablkcipher_alignmask(
686 struct crypto_ablkcipher *tfm)
688 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
691 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
693 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
696 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
699 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
702 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
705 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
708 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
709 const u8 *key, unsigned int keylen)
711 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
713 return crt->setkey(crt->base, key, keylen);
716 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
717 struct ablkcipher_request *req)
719 return __crypto_ablkcipher_cast(req->base.tfm);
722 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
724 struct ablkcipher_tfm *crt =
725 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
726 return crt->encrypt(req);
729 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
731 struct ablkcipher_tfm *crt =
732 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
733 return crt->decrypt(req);
736 static inline unsigned int crypto_ablkcipher_reqsize(
737 struct crypto_ablkcipher *tfm)
739 return crypto_ablkcipher_crt(tfm)->reqsize;
742 static inline void ablkcipher_request_set_tfm(
743 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
745 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
748 static inline struct ablkcipher_request *ablkcipher_request_cast(
749 struct crypto_async_request *req)
751 return container_of(req, struct ablkcipher_request, base);
754 static inline struct ablkcipher_request *ablkcipher_request_alloc(
755 struct crypto_ablkcipher *tfm, gfp_t gfp)
757 struct ablkcipher_request *req;
759 req = kmalloc(sizeof(struct ablkcipher_request) +
760 crypto_ablkcipher_reqsize(tfm), gfp);
763 ablkcipher_request_set_tfm(req, tfm);
768 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
773 static inline void ablkcipher_request_set_callback(
774 struct ablkcipher_request *req,
775 u32 flags, crypto_completion_t complete, void *data)
777 req->base.complete = complete;
778 req->base.data = data;
779 req->base.flags = flags;
782 static inline void ablkcipher_request_set_crypt(
783 struct ablkcipher_request *req,
784 struct scatterlist *src, struct scatterlist *dst,
785 unsigned int nbytes, void *iv)
789 req->nbytes = nbytes;
793 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
795 return (struct crypto_aead *)tfm;
798 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
800 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
805 static inline void crypto_free_aead(struct crypto_aead *tfm)
807 crypto_free_tfm(crypto_aead_tfm(tfm));
810 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
812 return &crypto_aead_tfm(tfm)->crt_aead;
815 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
817 return crypto_aead_crt(tfm)->ivsize;
820 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
822 return crypto_aead_crt(tfm)->authsize;
825 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
827 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
830 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
832 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
835 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
837 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
840 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
842 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
845 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
847 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
850 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
853 struct aead_tfm *crt = crypto_aead_crt(tfm);
855 return crt->setkey(crt->base, key, keylen);
858 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
860 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
862 return __crypto_aead_cast(req->base.tfm);
865 static inline int crypto_aead_encrypt(struct aead_request *req)
867 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
870 static inline int crypto_aead_decrypt(struct aead_request *req)
872 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
875 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
877 return crypto_aead_crt(tfm)->reqsize;
880 static inline void aead_request_set_tfm(struct aead_request *req,
881 struct crypto_aead *tfm)
883 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
886 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
889 struct aead_request *req;
891 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
894 aead_request_set_tfm(req, tfm);
899 static inline void aead_request_free(struct aead_request *req)
904 static inline void aead_request_set_callback(struct aead_request *req,
906 crypto_completion_t complete,
909 req->base.complete = complete;
910 req->base.data = data;
911 req->base.flags = flags;
914 static inline void aead_request_set_crypt(struct aead_request *req,
915 struct scatterlist *src,
916 struct scatterlist *dst,
917 unsigned int cryptlen, u8 *iv)
921 req->cryptlen = cryptlen;
925 static inline void aead_request_set_assoc(struct aead_request *req,
926 struct scatterlist *assoc,
927 unsigned int assoclen)
930 req->assoclen = assoclen;
933 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
934 struct crypto_tfm *tfm)
936 return (struct crypto_blkcipher *)tfm;
939 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
940 struct crypto_tfm *tfm)
942 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
943 return __crypto_blkcipher_cast(tfm);
946 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
947 const char *alg_name, u32 type, u32 mask)
949 type &= ~CRYPTO_ALG_TYPE_MASK;
950 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
951 mask |= CRYPTO_ALG_TYPE_MASK;
953 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
956 static inline struct crypto_tfm *crypto_blkcipher_tfm(
957 struct crypto_blkcipher *tfm)
962 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
964 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
967 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
969 type &= ~CRYPTO_ALG_TYPE_MASK;
970 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
971 mask |= CRYPTO_ALG_TYPE_MASK;
973 return crypto_has_alg(alg_name, type, mask);
976 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
978 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
981 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
982 struct crypto_blkcipher *tfm)
984 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
987 static inline struct blkcipher_alg *crypto_blkcipher_alg(
988 struct crypto_blkcipher *tfm)
990 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
993 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
995 return crypto_blkcipher_alg(tfm)->ivsize;
998 static inline unsigned int crypto_blkcipher_blocksize(
999 struct crypto_blkcipher *tfm)
1001 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
1004 static inline unsigned int crypto_blkcipher_alignmask(
1005 struct crypto_blkcipher *tfm)
1007 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
1010 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
1012 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
1015 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
1018 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
1021 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
1024 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
1027 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
1028 const u8 *key, unsigned int keylen)
1030 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
1034 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
1035 struct scatterlist *dst,
1036 struct scatterlist *src,
1037 unsigned int nbytes)
1039 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1040 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1043 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
1044 struct scatterlist *dst,
1045 struct scatterlist *src,
1046 unsigned int nbytes)
1048 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1051 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
1052 struct scatterlist *dst,
1053 struct scatterlist *src,
1054 unsigned int nbytes)
1056 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1057 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1060 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
1061 struct scatterlist *dst,
1062 struct scatterlist *src,
1063 unsigned int nbytes)
1065 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1068 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1069 const u8 *src, unsigned int len)
1071 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1074 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1075 u8 *dst, unsigned int len)
1077 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1080 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1082 return (struct crypto_cipher *)tfm;
1085 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1087 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1088 return __crypto_cipher_cast(tfm);
1091 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1094 type &= ~CRYPTO_ALG_TYPE_MASK;
1095 type |= CRYPTO_ALG_TYPE_CIPHER;
1096 mask |= CRYPTO_ALG_TYPE_MASK;
1098 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1101 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1106 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1108 crypto_free_tfm(crypto_cipher_tfm(tfm));
1111 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1113 type &= ~CRYPTO_ALG_TYPE_MASK;
1114 type |= CRYPTO_ALG_TYPE_CIPHER;
1115 mask |= CRYPTO_ALG_TYPE_MASK;
1117 return crypto_has_alg(alg_name, type, mask);
1120 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1122 return &crypto_cipher_tfm(tfm)->crt_cipher;
1125 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1127 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1130 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1132 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1135 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1137 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1140 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1143 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1146 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1149 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1152 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1153 const u8 *key, unsigned int keylen)
1155 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1159 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1160 u8 *dst, const u8 *src)
1162 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1166 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1167 u8 *dst, const u8 *src)
1169 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1173 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1175 return (struct crypto_hash *)tfm;
1178 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1180 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1181 CRYPTO_ALG_TYPE_HASH_MASK);
1182 return __crypto_hash_cast(tfm);
1185 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1188 type &= ~CRYPTO_ALG_TYPE_MASK;
1189 mask &= ~CRYPTO_ALG_TYPE_MASK;
1190 type |= CRYPTO_ALG_TYPE_HASH;
1191 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1193 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1196 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1201 static inline void crypto_free_hash(struct crypto_hash *tfm)
1203 crypto_free_tfm(crypto_hash_tfm(tfm));
1206 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1208 type &= ~CRYPTO_ALG_TYPE_MASK;
1209 mask &= ~CRYPTO_ALG_TYPE_MASK;
1210 type |= CRYPTO_ALG_TYPE_HASH;
1211 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1213 return crypto_has_alg(alg_name, type, mask);
1216 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1218 return &crypto_hash_tfm(tfm)->crt_hash;
1221 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1223 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1226 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1228 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1231 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1233 return crypto_hash_crt(tfm)->digestsize;
1236 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1238 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1241 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1243 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1246 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1248 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1251 static inline int crypto_hash_init(struct hash_desc *desc)
1253 return crypto_hash_crt(desc->tfm)->init(desc);
1256 static inline int crypto_hash_update(struct hash_desc *desc,
1257 struct scatterlist *sg,
1258 unsigned int nbytes)
1260 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1263 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1265 return crypto_hash_crt(desc->tfm)->final(desc, out);
1268 static inline int crypto_hash_digest(struct hash_desc *desc,
1269 struct scatterlist *sg,
1270 unsigned int nbytes, u8 *out)
1272 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1275 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1276 const u8 *key, unsigned int keylen)
1278 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1281 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1283 return (struct crypto_comp *)tfm;
1286 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1288 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1289 CRYPTO_ALG_TYPE_MASK);
1290 return __crypto_comp_cast(tfm);
1293 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1296 type &= ~CRYPTO_ALG_TYPE_MASK;
1297 type |= CRYPTO_ALG_TYPE_COMPRESS;
1298 mask |= CRYPTO_ALG_TYPE_MASK;
1300 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1303 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1308 static inline void crypto_free_comp(struct crypto_comp *tfm)
1310 crypto_free_tfm(crypto_comp_tfm(tfm));
1313 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1315 type &= ~CRYPTO_ALG_TYPE_MASK;
1316 type |= CRYPTO_ALG_TYPE_COMPRESS;
1317 mask |= CRYPTO_ALG_TYPE_MASK;
1319 return crypto_has_alg(alg_name, type, mask);
1322 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1324 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1327 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1329 return &crypto_comp_tfm(tfm)->crt_compress;
1332 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1333 const u8 *src, unsigned int slen,
1334 u8 *dst, unsigned int *dlen)
1336 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1337 src, slen, dst, dlen);
1340 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1341 const u8 *src, unsigned int slen,
1342 u8 *dst, unsigned int *dlen)
1344 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1345 src, slen, dst, dlen);
1348 #endif /* _LINUX_CRYPTO_H */