2 * Scatterlist Cryptographic API.
4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
9 * and Nettle, by Niels Möller.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
17 #ifndef _LINUX_CRYPTO_H
18 #define _LINUX_CRYPTO_H
20 #include <asm/atomic.h>
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/slab.h>
25 #include <linux/string.h>
26 #include <linux/uaccess.h>
29 * Algorithm masks and types.
31 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
32 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
33 #define CRYPTO_ALG_TYPE_DIGEST 0x00000002
34 #define CRYPTO_ALG_TYPE_HASH 0x00000003
35 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
36 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
37 #define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
38 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
39 #define CRYPTO_ALG_TYPE_AEAD 0x00000009
41 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
42 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
44 #define CRYPTO_ALG_LARVAL 0x00000010
45 #define CRYPTO_ALG_DEAD 0x00000020
46 #define CRYPTO_ALG_DYING 0x00000040
47 #define CRYPTO_ALG_ASYNC 0x00000080
50 * Set this bit if and only if the algorithm requires another algorithm of
51 * the same type to handle corner cases.
53 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
56 * This bit is set for symmetric key ciphers that have already been wrapped
57 * with a generic IV generator to prevent them from being wrapped again.
59 #define CRYPTO_ALG_GENIV 0x00000200
62 * Transform masks and values (for crt_flags).
64 #define CRYPTO_TFM_REQ_MASK 0x000fff00
65 #define CRYPTO_TFM_RES_MASK 0xfff00000
67 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
68 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
69 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
70 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
71 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
72 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
73 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
74 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
77 * Miscellaneous stuff.
79 #define CRYPTO_MAX_ALG_NAME 64
82 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
83 * declaration) is used to ensure that the crypto_tfm context structure is
84 * aligned correctly for the given architecture so that there are no alignment
85 * faults for C data types. In particular, this is required on platforms such
86 * as arm where pointers are 32-bit aligned but there are data types such as
87 * u64 which require 64-bit alignment.
89 #if defined(ARCH_KMALLOC_MINALIGN)
90 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
91 #elif defined(ARCH_SLAB_MINALIGN)
92 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
95 #ifdef CRYPTO_MINALIGN
96 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
98 #define CRYPTO_MINALIGN_ATTR
102 struct crypto_ablkcipher;
103 struct crypto_async_request;
105 struct crypto_blkcipher;
109 struct aead_givcrypt_request;
110 struct skcipher_givcrypt_request;
112 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
114 struct crypto_async_request {
115 struct list_head list;
116 crypto_completion_t complete;
118 struct crypto_tfm *tfm;
123 struct ablkcipher_request {
124 struct crypto_async_request base;
130 struct scatterlist *src;
131 struct scatterlist *dst;
133 void *__ctx[] CRYPTO_MINALIGN_ATTR;
137 * struct aead_request - AEAD request
138 * @base: Common attributes for async crypto requests
139 * @assoclen: Length in bytes of associated data for authentication
140 * @cryptlen: Length of data to be encrypted or decrypted
141 * @iv: Initialisation vector
142 * @assoc: Associated data
144 * @dst: Destination data
145 * @__ctx: Start of private context data
147 struct aead_request {
148 struct crypto_async_request base;
150 unsigned int assoclen;
151 unsigned int cryptlen;
155 struct scatterlist *assoc;
156 struct scatterlist *src;
157 struct scatterlist *dst;
159 void *__ctx[] CRYPTO_MINALIGN_ATTR;
162 struct blkcipher_desc {
163 struct crypto_blkcipher *tfm;
169 struct crypto_tfm *tfm;
170 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
171 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
172 const u8 *src, unsigned int nbytes);
177 struct crypto_hash *tfm;
182 * Algorithms: modular crypto algorithm implementations, managed
183 * via crypto_register_alg() and crypto_unregister_alg().
185 struct ablkcipher_alg {
186 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
187 unsigned int keylen);
188 int (*encrypt)(struct ablkcipher_request *req);
189 int (*decrypt)(struct ablkcipher_request *req);
190 int (*givencrypt)(struct skcipher_givcrypt_request *req);
191 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
195 unsigned int min_keysize;
196 unsigned int max_keysize;
201 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
202 unsigned int keylen);
203 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
204 int (*encrypt)(struct aead_request *req);
205 int (*decrypt)(struct aead_request *req);
206 int (*givencrypt)(struct aead_givcrypt_request *req);
207 int (*givdecrypt)(struct aead_givcrypt_request *req);
212 unsigned int maxauthsize;
215 struct blkcipher_alg {
216 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
217 unsigned int keylen);
218 int (*encrypt)(struct blkcipher_desc *desc,
219 struct scatterlist *dst, struct scatterlist *src,
220 unsigned int nbytes);
221 int (*decrypt)(struct blkcipher_desc *desc,
222 struct scatterlist *dst, struct scatterlist *src,
223 unsigned int nbytes);
227 unsigned int min_keysize;
228 unsigned int max_keysize;
233 unsigned int cia_min_keysize;
234 unsigned int cia_max_keysize;
235 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
236 unsigned int keylen);
237 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
238 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
242 unsigned int dia_digestsize;
243 void (*dia_init)(struct crypto_tfm *tfm);
244 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
246 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
247 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
248 unsigned int keylen);
252 int (*init)(struct hash_desc *desc);
253 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
254 unsigned int nbytes);
255 int (*final)(struct hash_desc *desc, u8 *out);
256 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
257 unsigned int nbytes, u8 *out);
258 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
259 unsigned int keylen);
261 unsigned int digestsize;
264 struct compress_alg {
265 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
266 unsigned int slen, u8 *dst, unsigned int *dlen);
267 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
268 unsigned int slen, u8 *dst, unsigned int *dlen);
271 #define cra_ablkcipher cra_u.ablkcipher
272 #define cra_aead cra_u.aead
273 #define cra_blkcipher cra_u.blkcipher
274 #define cra_cipher cra_u.cipher
275 #define cra_digest cra_u.digest
276 #define cra_hash cra_u.hash
277 #define cra_compress cra_u.compress
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 digest_alg digest;
302 struct hash_alg hash;
303 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);
320 * Algorithm query interface.
323 int crypto_has_alg(const char *name, u32 type, u32 mask);
325 static inline int crypto_has_alg(const char *name, u32 type, u32 mask)
332 * Transforms: user-instantiated objects which encapsulate algorithms
333 * and core processing logic. Managed via crypto_alloc_*() and
334 * crypto_free_*(), as well as the various helpers below.
337 struct ablkcipher_tfm {
338 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
339 unsigned int keylen);
340 int (*encrypt)(struct ablkcipher_request *req);
341 int (*decrypt)(struct ablkcipher_request *req);
342 int (*givencrypt)(struct skcipher_givcrypt_request *req);
343 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
345 struct crypto_ablkcipher *base;
348 unsigned int reqsize;
352 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
353 unsigned int keylen);
354 int (*encrypt)(struct aead_request *req);
355 int (*decrypt)(struct aead_request *req);
356 int (*givencrypt)(struct aead_givcrypt_request *req);
357 int (*givdecrypt)(struct aead_givcrypt_request *req);
359 struct crypto_aead *base;
362 unsigned int authsize;
363 unsigned int reqsize;
366 struct blkcipher_tfm {
368 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
369 unsigned int keylen);
370 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
371 struct scatterlist *src, unsigned int nbytes);
372 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
373 struct scatterlist *src, unsigned int nbytes);
377 int (*cit_setkey)(struct crypto_tfm *tfm,
378 const u8 *key, unsigned int keylen);
379 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
380 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
384 int (*init)(struct hash_desc *desc);
385 int (*update)(struct hash_desc *desc,
386 struct scatterlist *sg, unsigned int nsg);
387 int (*final)(struct hash_desc *desc, u8 *out);
388 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
389 unsigned int nsg, u8 *out);
390 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
391 unsigned int keylen);
392 unsigned int digestsize;
395 struct compress_tfm {
396 int (*cot_compress)(struct crypto_tfm *tfm,
397 const u8 *src, unsigned int slen,
398 u8 *dst, unsigned int *dlen);
399 int (*cot_decompress)(struct crypto_tfm *tfm,
400 const u8 *src, unsigned int slen,
401 u8 *dst, unsigned int *dlen);
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
416 struct ablkcipher_tfm ablkcipher;
417 struct aead_tfm aead;
418 struct blkcipher_tfm blkcipher;
419 struct cipher_tfm cipher;
420 struct hash_tfm hash;
421 struct compress_tfm compress;
424 struct crypto_alg *__crt_alg;
426 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
429 struct crypto_ablkcipher {
430 struct crypto_tfm base;
434 struct crypto_tfm base;
437 struct crypto_blkcipher {
438 struct crypto_tfm base;
441 struct crypto_cipher {
442 struct crypto_tfm base;
446 struct crypto_tfm base;
450 struct crypto_tfm base;
461 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
463 /* Maximum number of (rtattr) parameters for each template. */
464 #define CRYPTO_MAX_ATTRS 32
466 struct crypto_attr_alg {
467 char name[CRYPTO_MAX_ALG_NAME];
470 struct crypto_attr_type {
475 struct crypto_attr_u32 {
480 * Transform user interface.
483 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
484 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
485 void crypto_free_tfm(struct crypto_tfm *tfm);
488 * Transform helpers which query the underlying algorithm.
490 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
492 return tfm->__crt_alg->cra_name;
495 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
497 return tfm->__crt_alg->cra_driver_name;
500 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
502 return tfm->__crt_alg->cra_priority;
505 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
507 return module_name(tfm->__crt_alg->cra_module);
510 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
512 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
515 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
517 return tfm->__crt_alg->cra_blocksize;
520 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
522 return tfm->__crt_alg->cra_alignmask;
525 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
527 return tfm->crt_flags;
530 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
532 tfm->crt_flags |= flags;
535 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
537 tfm->crt_flags &= ~flags;
540 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
542 return tfm->__crt_ctx;
545 static inline unsigned int crypto_tfm_ctx_alignment(void)
547 struct crypto_tfm *tfm;
548 return __alignof__(tfm->__crt_ctx);
554 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
555 struct crypto_tfm *tfm)
557 return (struct crypto_ablkcipher *)tfm;
560 static inline u32 crypto_skcipher_type(u32 type)
562 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
563 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
567 static inline u32 crypto_skcipher_mask(u32 mask)
569 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
570 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
574 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
577 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
578 struct crypto_ablkcipher *tfm)
583 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
585 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
588 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
591 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
592 crypto_skcipher_mask(mask));
595 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
596 struct crypto_ablkcipher *tfm)
598 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
601 static inline unsigned int crypto_ablkcipher_ivsize(
602 struct crypto_ablkcipher *tfm)
604 return crypto_ablkcipher_crt(tfm)->ivsize;
607 static inline unsigned int crypto_ablkcipher_blocksize(
608 struct crypto_ablkcipher *tfm)
610 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
613 static inline unsigned int crypto_ablkcipher_alignmask(
614 struct crypto_ablkcipher *tfm)
616 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
619 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
621 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
624 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
627 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
630 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
633 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
636 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
637 const u8 *key, unsigned int keylen)
639 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
641 return crt->setkey(crt->base, key, keylen);
644 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
645 struct ablkcipher_request *req)
647 return __crypto_ablkcipher_cast(req->base.tfm);
650 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
652 struct ablkcipher_tfm *crt =
653 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
654 return crt->encrypt(req);
657 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
659 struct ablkcipher_tfm *crt =
660 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
661 return crt->decrypt(req);
664 static inline unsigned int crypto_ablkcipher_reqsize(
665 struct crypto_ablkcipher *tfm)
667 return crypto_ablkcipher_crt(tfm)->reqsize;
670 static inline void ablkcipher_request_set_tfm(
671 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
673 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
676 static inline struct ablkcipher_request *ablkcipher_request_cast(
677 struct crypto_async_request *req)
679 return container_of(req, struct ablkcipher_request, base);
682 static inline struct ablkcipher_request *ablkcipher_request_alloc(
683 struct crypto_ablkcipher *tfm, gfp_t gfp)
685 struct ablkcipher_request *req;
687 req = kmalloc(sizeof(struct ablkcipher_request) +
688 crypto_ablkcipher_reqsize(tfm), gfp);
691 ablkcipher_request_set_tfm(req, tfm);
696 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
701 static inline void ablkcipher_request_set_callback(
702 struct ablkcipher_request *req,
703 u32 flags, crypto_completion_t complete, void *data)
705 req->base.complete = complete;
706 req->base.data = data;
707 req->base.flags = flags;
710 static inline void ablkcipher_request_set_crypt(
711 struct ablkcipher_request *req,
712 struct scatterlist *src, struct scatterlist *dst,
713 unsigned int nbytes, void *iv)
717 req->nbytes = nbytes;
721 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
723 return (struct crypto_aead *)tfm;
726 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
728 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
733 static inline void crypto_free_aead(struct crypto_aead *tfm)
735 crypto_free_tfm(crypto_aead_tfm(tfm));
738 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
740 return &crypto_aead_tfm(tfm)->crt_aead;
743 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
745 return crypto_aead_crt(tfm)->ivsize;
748 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
750 return crypto_aead_crt(tfm)->authsize;
753 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
755 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
758 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
760 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
763 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
765 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
768 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
770 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
773 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
775 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
778 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
781 struct aead_tfm *crt = crypto_aead_crt(tfm);
783 return crt->setkey(crt->base, key, keylen);
786 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
788 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
790 return __crypto_aead_cast(req->base.tfm);
793 static inline int crypto_aead_encrypt(struct aead_request *req)
795 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
798 static inline int crypto_aead_decrypt(struct aead_request *req)
800 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
803 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
805 return crypto_aead_crt(tfm)->reqsize;
808 static inline void aead_request_set_tfm(struct aead_request *req,
809 struct crypto_aead *tfm)
811 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
814 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
817 struct aead_request *req;
819 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
822 aead_request_set_tfm(req, tfm);
827 static inline void aead_request_free(struct aead_request *req)
832 static inline void aead_request_set_callback(struct aead_request *req,
834 crypto_completion_t complete,
837 req->base.complete = complete;
838 req->base.data = data;
839 req->base.flags = flags;
842 static inline void aead_request_set_crypt(struct aead_request *req,
843 struct scatterlist *src,
844 struct scatterlist *dst,
845 unsigned int cryptlen, u8 *iv)
849 req->cryptlen = cryptlen;
853 static inline void aead_request_set_assoc(struct aead_request *req,
854 struct scatterlist *assoc,
855 unsigned int assoclen)
858 req->assoclen = assoclen;
861 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
862 struct crypto_tfm *tfm)
864 return (struct crypto_blkcipher *)tfm;
867 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
868 struct crypto_tfm *tfm)
870 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
871 return __crypto_blkcipher_cast(tfm);
874 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
875 const char *alg_name, u32 type, u32 mask)
877 type &= ~CRYPTO_ALG_TYPE_MASK;
878 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
879 mask |= CRYPTO_ALG_TYPE_MASK;
881 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
884 static inline struct crypto_tfm *crypto_blkcipher_tfm(
885 struct crypto_blkcipher *tfm)
890 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
892 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
895 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
897 type &= ~CRYPTO_ALG_TYPE_MASK;
898 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
899 mask |= CRYPTO_ALG_TYPE_MASK;
901 return crypto_has_alg(alg_name, type, mask);
904 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
906 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
909 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
910 struct crypto_blkcipher *tfm)
912 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
915 static inline struct blkcipher_alg *crypto_blkcipher_alg(
916 struct crypto_blkcipher *tfm)
918 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
921 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
923 return crypto_blkcipher_alg(tfm)->ivsize;
926 static inline unsigned int crypto_blkcipher_blocksize(
927 struct crypto_blkcipher *tfm)
929 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
932 static inline unsigned int crypto_blkcipher_alignmask(
933 struct crypto_blkcipher *tfm)
935 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
938 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
940 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
943 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
946 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
949 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
952 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
955 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
956 const u8 *key, unsigned int keylen)
958 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
962 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
963 struct scatterlist *dst,
964 struct scatterlist *src,
967 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
968 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
971 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
972 struct scatterlist *dst,
973 struct scatterlist *src,
976 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
979 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
980 struct scatterlist *dst,
981 struct scatterlist *src,
984 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
985 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
988 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
989 struct scatterlist *dst,
990 struct scatterlist *src,
993 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
996 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
997 const u8 *src, unsigned int len)
999 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1002 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1003 u8 *dst, unsigned int len)
1005 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1008 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1010 return (struct crypto_cipher *)tfm;
1013 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1015 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1016 return __crypto_cipher_cast(tfm);
1019 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1022 type &= ~CRYPTO_ALG_TYPE_MASK;
1023 type |= CRYPTO_ALG_TYPE_CIPHER;
1024 mask |= CRYPTO_ALG_TYPE_MASK;
1026 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1029 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1034 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1036 crypto_free_tfm(crypto_cipher_tfm(tfm));
1039 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1041 type &= ~CRYPTO_ALG_TYPE_MASK;
1042 type |= CRYPTO_ALG_TYPE_CIPHER;
1043 mask |= CRYPTO_ALG_TYPE_MASK;
1045 return crypto_has_alg(alg_name, type, mask);
1048 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1050 return &crypto_cipher_tfm(tfm)->crt_cipher;
1053 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1055 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1058 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1060 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1063 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1065 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1068 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1071 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1074 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1077 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1080 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1081 const u8 *key, unsigned int keylen)
1083 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1087 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1088 u8 *dst, const u8 *src)
1090 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1094 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1095 u8 *dst, const u8 *src)
1097 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1101 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1103 return (struct crypto_hash *)tfm;
1106 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1108 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1109 CRYPTO_ALG_TYPE_HASH_MASK);
1110 return __crypto_hash_cast(tfm);
1113 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1116 type &= ~CRYPTO_ALG_TYPE_MASK;
1117 mask &= ~CRYPTO_ALG_TYPE_MASK;
1118 type |= CRYPTO_ALG_TYPE_HASH;
1119 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1121 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1124 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1129 static inline void crypto_free_hash(struct crypto_hash *tfm)
1131 crypto_free_tfm(crypto_hash_tfm(tfm));
1134 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1136 type &= ~CRYPTO_ALG_TYPE_MASK;
1137 mask &= ~CRYPTO_ALG_TYPE_MASK;
1138 type |= CRYPTO_ALG_TYPE_HASH;
1139 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1141 return crypto_has_alg(alg_name, type, mask);
1144 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1146 return &crypto_hash_tfm(tfm)->crt_hash;
1149 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1151 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1154 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1156 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1159 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1161 return crypto_hash_crt(tfm)->digestsize;
1164 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1166 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1169 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1171 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1174 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1176 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1179 static inline int crypto_hash_init(struct hash_desc *desc)
1181 return crypto_hash_crt(desc->tfm)->init(desc);
1184 static inline int crypto_hash_update(struct hash_desc *desc,
1185 struct scatterlist *sg,
1186 unsigned int nbytes)
1188 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1191 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1193 return crypto_hash_crt(desc->tfm)->final(desc, out);
1196 static inline int crypto_hash_digest(struct hash_desc *desc,
1197 struct scatterlist *sg,
1198 unsigned int nbytes, u8 *out)
1200 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1203 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1204 const u8 *key, unsigned int keylen)
1206 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1209 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1211 return (struct crypto_comp *)tfm;
1214 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1216 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1217 CRYPTO_ALG_TYPE_MASK);
1218 return __crypto_comp_cast(tfm);
1221 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1224 type &= ~CRYPTO_ALG_TYPE_MASK;
1225 type |= CRYPTO_ALG_TYPE_COMPRESS;
1226 mask |= CRYPTO_ALG_TYPE_MASK;
1228 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1231 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1236 static inline void crypto_free_comp(struct crypto_comp *tfm)
1238 crypto_free_tfm(crypto_comp_tfm(tfm));
1241 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1243 type &= ~CRYPTO_ALG_TYPE_MASK;
1244 type |= CRYPTO_ALG_TYPE_COMPRESS;
1245 mask |= CRYPTO_ALG_TYPE_MASK;
1247 return crypto_has_alg(alg_name, type, mask);
1250 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1252 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1255 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1257 return &crypto_comp_tfm(tfm)->crt_compress;
1260 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1261 const u8 *src, unsigned int slen,
1262 u8 *dst, unsigned int *dlen)
1264 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1265 src, slen, dst, dlen);
1268 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1269 const u8 *src, unsigned int slen,
1270 u8 *dst, unsigned int *dlen)
1272 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1273 src, slen, dst, dlen);
1276 #endif /* _LINUX_CRYPTO_H */