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 static inline struct crypto_aead
*crypto_alloc_aead(const char *alg_name
,
729 type
&= ~CRYPTO_ALG_TYPE_MASK
;
730 type
|= CRYPTO_ALG_TYPE_AEAD
;
731 mask
|= CRYPTO_ALG_TYPE_MASK
;
733 return __crypto_aead_cast(crypto_alloc_base(alg_name
, type
, mask
));
736 static inline struct crypto_tfm
*crypto_aead_tfm(struct crypto_aead
*tfm
)
741 static inline void crypto_free_aead(struct crypto_aead
*tfm
)
743 crypto_free_tfm(crypto_aead_tfm(tfm
));
746 static inline struct aead_tfm
*crypto_aead_crt(struct crypto_aead
*tfm
)
748 return &crypto_aead_tfm(tfm
)->crt_aead
;
751 static inline unsigned int crypto_aead_ivsize(struct crypto_aead
*tfm
)
753 return crypto_aead_crt(tfm
)->ivsize
;
756 static inline unsigned int crypto_aead_authsize(struct crypto_aead
*tfm
)
758 return crypto_aead_crt(tfm
)->authsize
;
761 static inline unsigned int crypto_aead_blocksize(struct crypto_aead
*tfm
)
763 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm
));
766 static inline unsigned int crypto_aead_alignmask(struct crypto_aead
*tfm
)
768 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm
));
771 static inline u32
crypto_aead_get_flags(struct crypto_aead
*tfm
)
773 return crypto_tfm_get_flags(crypto_aead_tfm(tfm
));
776 static inline void crypto_aead_set_flags(struct crypto_aead
*tfm
, u32 flags
)
778 crypto_tfm_set_flags(crypto_aead_tfm(tfm
), flags
);
781 static inline void crypto_aead_clear_flags(struct crypto_aead
*tfm
, u32 flags
)
783 crypto_tfm_clear_flags(crypto_aead_tfm(tfm
), flags
);
786 static inline int crypto_aead_setkey(struct crypto_aead
*tfm
, const u8
*key
,
789 struct aead_tfm
*crt
= crypto_aead_crt(tfm
);
791 return crt
->setkey(crt
->base
, key
, keylen
);
794 int crypto_aead_setauthsize(struct crypto_aead
*tfm
, unsigned int authsize
);
796 static inline struct crypto_aead
*crypto_aead_reqtfm(struct aead_request
*req
)
798 return __crypto_aead_cast(req
->base
.tfm
);
801 static inline int crypto_aead_encrypt(struct aead_request
*req
)
803 return crypto_aead_crt(crypto_aead_reqtfm(req
))->encrypt(req
);
806 static inline int crypto_aead_decrypt(struct aead_request
*req
)
808 return crypto_aead_crt(crypto_aead_reqtfm(req
))->decrypt(req
);
811 static inline unsigned int crypto_aead_reqsize(struct crypto_aead
*tfm
)
813 return crypto_aead_crt(tfm
)->reqsize
;
816 static inline void aead_request_set_tfm(struct aead_request
*req
,
817 struct crypto_aead
*tfm
)
819 req
->base
.tfm
= crypto_aead_tfm(crypto_aead_crt(tfm
)->base
);
822 static inline struct aead_request
*aead_request_alloc(struct crypto_aead
*tfm
,
825 struct aead_request
*req
;
827 req
= kmalloc(sizeof(*req
) + crypto_aead_reqsize(tfm
), gfp
);
830 aead_request_set_tfm(req
, tfm
);
835 static inline void aead_request_free(struct aead_request
*req
)
840 static inline void aead_request_set_callback(struct aead_request
*req
,
842 crypto_completion_t complete
,
845 req
->base
.complete
= complete
;
846 req
->base
.data
= data
;
847 req
->base
.flags
= flags
;
850 static inline void aead_request_set_crypt(struct aead_request
*req
,
851 struct scatterlist
*src
,
852 struct scatterlist
*dst
,
853 unsigned int cryptlen
, u8
*iv
)
857 req
->cryptlen
= cryptlen
;
861 static inline void aead_request_set_assoc(struct aead_request
*req
,
862 struct scatterlist
*assoc
,
863 unsigned int assoclen
)
866 req
->assoclen
= assoclen
;
869 static inline struct crypto_blkcipher
*__crypto_blkcipher_cast(
870 struct crypto_tfm
*tfm
)
872 return (struct crypto_blkcipher
*)tfm
;
875 static inline struct crypto_blkcipher
*crypto_blkcipher_cast(
876 struct crypto_tfm
*tfm
)
878 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_BLKCIPHER
);
879 return __crypto_blkcipher_cast(tfm
);
882 static inline struct crypto_blkcipher
*crypto_alloc_blkcipher(
883 const char *alg_name
, u32 type
, u32 mask
)
885 type
&= ~CRYPTO_ALG_TYPE_MASK
;
886 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
887 mask
|= CRYPTO_ALG_TYPE_MASK
;
889 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
892 static inline struct crypto_tfm
*crypto_blkcipher_tfm(
893 struct crypto_blkcipher
*tfm
)
898 static inline void crypto_free_blkcipher(struct crypto_blkcipher
*tfm
)
900 crypto_free_tfm(crypto_blkcipher_tfm(tfm
));
903 static inline int crypto_has_blkcipher(const char *alg_name
, u32 type
, u32 mask
)
905 type
&= ~CRYPTO_ALG_TYPE_MASK
;
906 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
907 mask
|= CRYPTO_ALG_TYPE_MASK
;
909 return crypto_has_alg(alg_name
, type
, mask
);
912 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher
*tfm
)
914 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm
));
917 static inline struct blkcipher_tfm
*crypto_blkcipher_crt(
918 struct crypto_blkcipher
*tfm
)
920 return &crypto_blkcipher_tfm(tfm
)->crt_blkcipher
;
923 static inline struct blkcipher_alg
*crypto_blkcipher_alg(
924 struct crypto_blkcipher
*tfm
)
926 return &crypto_blkcipher_tfm(tfm
)->__crt_alg
->cra_blkcipher
;
929 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher
*tfm
)
931 return crypto_blkcipher_alg(tfm
)->ivsize
;
934 static inline unsigned int crypto_blkcipher_blocksize(
935 struct crypto_blkcipher
*tfm
)
937 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm
));
940 static inline unsigned int crypto_blkcipher_alignmask(
941 struct crypto_blkcipher
*tfm
)
943 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm
));
946 static inline u32
crypto_blkcipher_get_flags(struct crypto_blkcipher
*tfm
)
948 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm
));
951 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher
*tfm
,
954 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm
), flags
);
957 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher
*tfm
,
960 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm
), flags
);
963 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher
*tfm
,
964 const u8
*key
, unsigned int keylen
)
966 return crypto_blkcipher_crt(tfm
)->setkey(crypto_blkcipher_tfm(tfm
),
970 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc
*desc
,
971 struct scatterlist
*dst
,
972 struct scatterlist
*src
,
975 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
976 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
979 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc
*desc
,
980 struct scatterlist
*dst
,
981 struct scatterlist
*src
,
984 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
987 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc
*desc
,
988 struct scatterlist
*dst
,
989 struct scatterlist
*src
,
992 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
993 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
996 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc
*desc
,
997 struct scatterlist
*dst
,
998 struct scatterlist
*src
,
1001 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
1004 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher
*tfm
,
1005 const u8
*src
, unsigned int len
)
1007 memcpy(crypto_blkcipher_crt(tfm
)->iv
, src
, len
);
1010 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher
*tfm
,
1011 u8
*dst
, unsigned int len
)
1013 memcpy(dst
, crypto_blkcipher_crt(tfm
)->iv
, len
);
1016 static inline struct crypto_cipher
*__crypto_cipher_cast(struct crypto_tfm
*tfm
)
1018 return (struct crypto_cipher
*)tfm
;
1021 static inline struct crypto_cipher
*crypto_cipher_cast(struct crypto_tfm
*tfm
)
1023 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
1024 return __crypto_cipher_cast(tfm
);
1027 static inline struct crypto_cipher
*crypto_alloc_cipher(const char *alg_name
,
1030 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1031 type
|= CRYPTO_ALG_TYPE_CIPHER
;
1032 mask
|= CRYPTO_ALG_TYPE_MASK
;
1034 return __crypto_cipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
1037 static inline struct crypto_tfm
*crypto_cipher_tfm(struct crypto_cipher
*tfm
)
1042 static inline void crypto_free_cipher(struct crypto_cipher
*tfm
)
1044 crypto_free_tfm(crypto_cipher_tfm(tfm
));
1047 static inline int crypto_has_cipher(const char *alg_name
, u32 type
, u32 mask
)
1049 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1050 type
|= CRYPTO_ALG_TYPE_CIPHER
;
1051 mask
|= CRYPTO_ALG_TYPE_MASK
;
1053 return crypto_has_alg(alg_name
, type
, mask
);
1056 static inline struct cipher_tfm
*crypto_cipher_crt(struct crypto_cipher
*tfm
)
1058 return &crypto_cipher_tfm(tfm
)->crt_cipher
;
1061 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher
*tfm
)
1063 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm
));
1066 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher
*tfm
)
1068 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm
));
1071 static inline u32
crypto_cipher_get_flags(struct crypto_cipher
*tfm
)
1073 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm
));
1076 static inline void crypto_cipher_set_flags(struct crypto_cipher
*tfm
,
1079 crypto_tfm_set_flags(crypto_cipher_tfm(tfm
), flags
);
1082 static inline void crypto_cipher_clear_flags(struct crypto_cipher
*tfm
,
1085 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm
), flags
);
1088 static inline int crypto_cipher_setkey(struct crypto_cipher
*tfm
,
1089 const u8
*key
, unsigned int keylen
)
1091 return crypto_cipher_crt(tfm
)->cit_setkey(crypto_cipher_tfm(tfm
),
1095 static inline void crypto_cipher_encrypt_one(struct crypto_cipher
*tfm
,
1096 u8
*dst
, const u8
*src
)
1098 crypto_cipher_crt(tfm
)->cit_encrypt_one(crypto_cipher_tfm(tfm
),
1102 static inline void crypto_cipher_decrypt_one(struct crypto_cipher
*tfm
,
1103 u8
*dst
, const u8
*src
)
1105 crypto_cipher_crt(tfm
)->cit_decrypt_one(crypto_cipher_tfm(tfm
),
1109 static inline struct crypto_hash
*__crypto_hash_cast(struct crypto_tfm
*tfm
)
1111 return (struct crypto_hash
*)tfm
;
1114 static inline struct crypto_hash
*crypto_hash_cast(struct crypto_tfm
*tfm
)
1116 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_HASH
) &
1117 CRYPTO_ALG_TYPE_HASH_MASK
);
1118 return __crypto_hash_cast(tfm
);
1121 static inline struct crypto_hash
*crypto_alloc_hash(const char *alg_name
,
1124 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1125 mask
&= ~CRYPTO_ALG_TYPE_MASK
;
1126 type
|= CRYPTO_ALG_TYPE_HASH
;
1127 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
1129 return __crypto_hash_cast(crypto_alloc_base(alg_name
, type
, mask
));
1132 static inline struct crypto_tfm
*crypto_hash_tfm(struct crypto_hash
*tfm
)
1137 static inline void crypto_free_hash(struct crypto_hash
*tfm
)
1139 crypto_free_tfm(crypto_hash_tfm(tfm
));
1142 static inline int crypto_has_hash(const char *alg_name
, u32 type
, u32 mask
)
1144 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1145 mask
&= ~CRYPTO_ALG_TYPE_MASK
;
1146 type
|= CRYPTO_ALG_TYPE_HASH
;
1147 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
1149 return crypto_has_alg(alg_name
, type
, mask
);
1152 static inline struct hash_tfm
*crypto_hash_crt(struct crypto_hash
*tfm
)
1154 return &crypto_hash_tfm(tfm
)->crt_hash
;
1157 static inline unsigned int crypto_hash_blocksize(struct crypto_hash
*tfm
)
1159 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm
));
1162 static inline unsigned int crypto_hash_alignmask(struct crypto_hash
*tfm
)
1164 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm
));
1167 static inline unsigned int crypto_hash_digestsize(struct crypto_hash
*tfm
)
1169 return crypto_hash_crt(tfm
)->digestsize
;
1172 static inline u32
crypto_hash_get_flags(struct crypto_hash
*tfm
)
1174 return crypto_tfm_get_flags(crypto_hash_tfm(tfm
));
1177 static inline void crypto_hash_set_flags(struct crypto_hash
*tfm
, u32 flags
)
1179 crypto_tfm_set_flags(crypto_hash_tfm(tfm
), flags
);
1182 static inline void crypto_hash_clear_flags(struct crypto_hash
*tfm
, u32 flags
)
1184 crypto_tfm_clear_flags(crypto_hash_tfm(tfm
), flags
);
1187 static inline int crypto_hash_init(struct hash_desc
*desc
)
1189 return crypto_hash_crt(desc
->tfm
)->init(desc
);
1192 static inline int crypto_hash_update(struct hash_desc
*desc
,
1193 struct scatterlist
*sg
,
1194 unsigned int nbytes
)
1196 return crypto_hash_crt(desc
->tfm
)->update(desc
, sg
, nbytes
);
1199 static inline int crypto_hash_final(struct hash_desc
*desc
, u8
*out
)
1201 return crypto_hash_crt(desc
->tfm
)->final(desc
, out
);
1204 static inline int crypto_hash_digest(struct hash_desc
*desc
,
1205 struct scatterlist
*sg
,
1206 unsigned int nbytes
, u8
*out
)
1208 return crypto_hash_crt(desc
->tfm
)->digest(desc
, sg
, nbytes
, out
);
1211 static inline int crypto_hash_setkey(struct crypto_hash
*hash
,
1212 const u8
*key
, unsigned int keylen
)
1214 return crypto_hash_crt(hash
)->setkey(hash
, key
, keylen
);
1217 static inline struct crypto_comp
*__crypto_comp_cast(struct crypto_tfm
*tfm
)
1219 return (struct crypto_comp
*)tfm
;
1222 static inline struct crypto_comp
*crypto_comp_cast(struct crypto_tfm
*tfm
)
1224 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_COMPRESS
) &
1225 CRYPTO_ALG_TYPE_MASK
);
1226 return __crypto_comp_cast(tfm
);
1229 static inline struct crypto_comp
*crypto_alloc_comp(const char *alg_name
,
1232 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1233 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1234 mask
|= CRYPTO_ALG_TYPE_MASK
;
1236 return __crypto_comp_cast(crypto_alloc_base(alg_name
, type
, mask
));
1239 static inline struct crypto_tfm
*crypto_comp_tfm(struct crypto_comp
*tfm
)
1244 static inline void crypto_free_comp(struct crypto_comp
*tfm
)
1246 crypto_free_tfm(crypto_comp_tfm(tfm
));
1249 static inline int crypto_has_comp(const char *alg_name
, u32 type
, u32 mask
)
1251 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1252 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1253 mask
|= CRYPTO_ALG_TYPE_MASK
;
1255 return crypto_has_alg(alg_name
, type
, mask
);
1258 static inline const char *crypto_comp_name(struct crypto_comp
*tfm
)
1260 return crypto_tfm_alg_name(crypto_comp_tfm(tfm
));
1263 static inline struct compress_tfm
*crypto_comp_crt(struct crypto_comp
*tfm
)
1265 return &crypto_comp_tfm(tfm
)->crt_compress
;
1268 static inline int crypto_comp_compress(struct crypto_comp
*tfm
,
1269 const u8
*src
, unsigned int slen
,
1270 u8
*dst
, unsigned int *dlen
)
1272 return crypto_comp_crt(tfm
)->cot_compress(crypto_comp_tfm(tfm
),
1273 src
, slen
, dst
, dlen
);
1276 static inline int crypto_comp_decompress(struct crypto_comp
*tfm
,
1277 const u8
*src
, unsigned int slen
,
1278 u8
*dst
, unsigned int *dlen
)
1280 return crypto_comp_crt(tfm
)->cot_decompress(crypto_comp_tfm(tfm
),
1281 src
, slen
, dst
, dlen
);
1284 #endif /* _LINUX_CRYPTO_H */