2 * Scatterlist Cryptographic API.
4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
9 * and Nettle, by Niels Möller.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
17 #ifndef _LINUX_CRYPTO_H
18 #define _LINUX_CRYPTO_H
20 #include <linux/atomic.h>
21 #include <linux/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
43 #define CRYPTO_ALG_TYPE_PCOMPRESS 0x0000000f
45 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
46 #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
47 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
49 #define CRYPTO_ALG_LARVAL 0x00000010
50 #define CRYPTO_ALG_DEAD 0x00000020
51 #define CRYPTO_ALG_DYING 0x00000040
52 #define CRYPTO_ALG_ASYNC 0x00000080
55 * Set this bit if and only if the algorithm requires another algorithm of
56 * the same type to handle corner cases.
58 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
61 * This bit is set for symmetric key ciphers that have already been wrapped
62 * with a generic IV generator to prevent them from being wrapped again.
64 #define CRYPTO_ALG_GENIV 0x00000200
67 * Set if the algorithm has passed automated run-time testing. Note that
68 * if there is no run-time testing for a given algorithm it is considered
72 #define CRYPTO_ALG_TESTED 0x00000400
75 * Set if the algorithm is an instance that is build from templates.
77 #define CRYPTO_ALG_INSTANCE 0x00000800
80 * Transform masks and values (for crt_flags).
82 #define CRYPTO_TFM_REQ_MASK 0x000fff00
83 #define CRYPTO_TFM_RES_MASK 0xfff00000
85 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
86 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
87 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
88 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
89 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
90 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
91 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
92 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
95 * Miscellaneous stuff.
97 #define CRYPTO_MAX_ALG_NAME 64
100 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
101 * declaration) is used to ensure that the crypto_tfm context structure is
102 * aligned correctly for the given architecture so that there are no alignment
103 * faults for C data types. In particular, this is required on platforms such
104 * as arm where pointers are 32-bit aligned but there are data types such as
105 * u64 which require 64-bit alignment.
107 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
109 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
112 struct crypto_ablkcipher
;
113 struct crypto_async_request
;
115 struct crypto_blkcipher
;
120 struct aead_givcrypt_request
;
121 struct skcipher_givcrypt_request
;
123 typedef void (*crypto_completion_t
)(struct crypto_async_request
*req
, int err
);
125 struct crypto_async_request
{
126 struct list_head list
;
127 crypto_completion_t complete
;
129 struct crypto_tfm
*tfm
;
134 struct ablkcipher_request
{
135 struct crypto_async_request base
;
141 struct scatterlist
*src
;
142 struct scatterlist
*dst
;
144 void *__ctx
[] CRYPTO_MINALIGN_ATTR
;
148 * struct aead_request - AEAD request
149 * @base: Common attributes for async crypto requests
150 * @assoclen: Length in bytes of associated data for authentication
151 * @cryptlen: Length of data to be encrypted or decrypted
152 * @iv: Initialisation vector
153 * @assoc: Associated data
155 * @dst: Destination data
156 * @__ctx: Start of private context data
158 struct aead_request
{
159 struct crypto_async_request base
;
161 unsigned int assoclen
;
162 unsigned int cryptlen
;
166 struct scatterlist
*assoc
;
167 struct scatterlist
*src
;
168 struct scatterlist
*dst
;
170 void *__ctx
[] CRYPTO_MINALIGN_ATTR
;
173 struct blkcipher_desc
{
174 struct crypto_blkcipher
*tfm
;
180 struct crypto_tfm
*tfm
;
181 void (*crfn
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
182 unsigned int (*prfn
)(const struct cipher_desc
*desc
, u8
*dst
,
183 const u8
*src
, unsigned int nbytes
);
188 struct crypto_hash
*tfm
;
193 * Algorithms: modular crypto algorithm implementations, managed
194 * via crypto_register_alg() and crypto_unregister_alg().
196 struct ablkcipher_alg
{
197 int (*setkey
)(struct crypto_ablkcipher
*tfm
, const u8
*key
,
198 unsigned int keylen
);
199 int (*encrypt
)(struct ablkcipher_request
*req
);
200 int (*decrypt
)(struct ablkcipher_request
*req
);
201 int (*givencrypt
)(struct skcipher_givcrypt_request
*req
);
202 int (*givdecrypt
)(struct skcipher_givcrypt_request
*req
);
206 unsigned int min_keysize
;
207 unsigned int max_keysize
;
212 int (*setkey
)(struct crypto_aead
*tfm
, const u8
*key
,
213 unsigned int keylen
);
214 int (*setauthsize
)(struct crypto_aead
*tfm
, unsigned int authsize
);
215 int (*encrypt
)(struct aead_request
*req
);
216 int (*decrypt
)(struct aead_request
*req
);
217 int (*givencrypt
)(struct aead_givcrypt_request
*req
);
218 int (*givdecrypt
)(struct aead_givcrypt_request
*req
);
223 unsigned int maxauthsize
;
226 struct blkcipher_alg
{
227 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
228 unsigned int keylen
);
229 int (*encrypt
)(struct blkcipher_desc
*desc
,
230 struct scatterlist
*dst
, struct scatterlist
*src
,
231 unsigned int nbytes
);
232 int (*decrypt
)(struct blkcipher_desc
*desc
,
233 struct scatterlist
*dst
, struct scatterlist
*src
,
234 unsigned int nbytes
);
238 unsigned int min_keysize
;
239 unsigned int max_keysize
;
244 unsigned int cia_min_keysize
;
245 unsigned int cia_max_keysize
;
246 int (*cia_setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
247 unsigned int keylen
);
248 void (*cia_encrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
249 void (*cia_decrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
252 struct compress_alg
{
253 int (*coa_compress
)(struct crypto_tfm
*tfm
, const u8
*src
,
254 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
255 int (*coa_decompress
)(struct crypto_tfm
*tfm
, const u8
*src
,
256 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
260 int (*rng_make_random
)(struct crypto_rng
*tfm
, u8
*rdata
,
262 int (*rng_reset
)(struct crypto_rng
*tfm
, u8
*seed
, unsigned int slen
);
264 unsigned int seedsize
;
268 #define cra_ablkcipher cra_u.ablkcipher
269 #define cra_aead cra_u.aead
270 #define cra_blkcipher cra_u.blkcipher
271 #define cra_cipher cra_u.cipher
272 #define cra_compress cra_u.compress
273 #define cra_rng cra_u.rng
276 struct list_head cra_list
;
277 struct list_head cra_users
;
280 unsigned int cra_blocksize
;
281 unsigned int cra_ctxsize
;
282 unsigned int cra_alignmask
;
287 char cra_name
[CRYPTO_MAX_ALG_NAME
];
288 char cra_driver_name
[CRYPTO_MAX_ALG_NAME
];
290 const struct crypto_type
*cra_type
;
293 struct ablkcipher_alg ablkcipher
;
294 struct aead_alg aead
;
295 struct blkcipher_alg blkcipher
;
296 struct cipher_alg cipher
;
297 struct compress_alg compress
;
301 int (*cra_init
)(struct crypto_tfm
*tfm
);
302 void (*cra_exit
)(struct crypto_tfm
*tfm
);
303 void (*cra_destroy
)(struct crypto_alg
*alg
);
305 struct module
*cra_module
;
309 * Algorithm registration interface.
311 int crypto_register_alg(struct crypto_alg
*alg
);
312 int crypto_unregister_alg(struct crypto_alg
*alg
);
315 * Algorithm query interface.
317 int crypto_has_alg(const char *name
, u32 type
, u32 mask
);
320 * Transforms: user-instantiated objects which encapsulate algorithms
321 * and core processing logic. Managed via crypto_alloc_*() and
322 * crypto_free_*(), as well as the various helpers below.
325 struct ablkcipher_tfm
{
326 int (*setkey
)(struct crypto_ablkcipher
*tfm
, const u8
*key
,
327 unsigned int keylen
);
328 int (*encrypt
)(struct ablkcipher_request
*req
);
329 int (*decrypt
)(struct ablkcipher_request
*req
);
330 int (*givencrypt
)(struct skcipher_givcrypt_request
*req
);
331 int (*givdecrypt
)(struct skcipher_givcrypt_request
*req
);
333 struct crypto_ablkcipher
*base
;
336 unsigned int reqsize
;
340 int (*setkey
)(struct crypto_aead
*tfm
, const u8
*key
,
341 unsigned int keylen
);
342 int (*encrypt
)(struct aead_request
*req
);
343 int (*decrypt
)(struct aead_request
*req
);
344 int (*givencrypt
)(struct aead_givcrypt_request
*req
);
345 int (*givdecrypt
)(struct aead_givcrypt_request
*req
);
347 struct crypto_aead
*base
;
350 unsigned int authsize
;
351 unsigned int reqsize
;
354 struct blkcipher_tfm
{
356 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
357 unsigned int keylen
);
358 int (*encrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
359 struct scatterlist
*src
, unsigned int nbytes
);
360 int (*decrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
361 struct scatterlist
*src
, unsigned int nbytes
);
365 int (*cit_setkey
)(struct crypto_tfm
*tfm
,
366 const u8
*key
, unsigned int keylen
);
367 void (*cit_encrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
368 void (*cit_decrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
372 int (*init
)(struct hash_desc
*desc
);
373 int (*update
)(struct hash_desc
*desc
,
374 struct scatterlist
*sg
, unsigned int nsg
);
375 int (*final
)(struct hash_desc
*desc
, u8
*out
);
376 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
377 unsigned int nsg
, u8
*out
);
378 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
379 unsigned int keylen
);
380 unsigned int digestsize
;
383 struct compress_tfm
{
384 int (*cot_compress
)(struct crypto_tfm
*tfm
,
385 const u8
*src
, unsigned int slen
,
386 u8
*dst
, unsigned int *dlen
);
387 int (*cot_decompress
)(struct crypto_tfm
*tfm
,
388 const u8
*src
, unsigned int slen
,
389 u8
*dst
, unsigned int *dlen
);
393 int (*rng_gen_random
)(struct crypto_rng
*tfm
, u8
*rdata
,
395 int (*rng_reset
)(struct crypto_rng
*tfm
, u8
*seed
, unsigned int slen
);
398 #define crt_ablkcipher crt_u.ablkcipher
399 #define crt_aead crt_u.aead
400 #define crt_blkcipher crt_u.blkcipher
401 #define crt_cipher crt_u.cipher
402 #define crt_hash crt_u.hash
403 #define crt_compress crt_u.compress
404 #define crt_rng crt_u.rng
411 struct ablkcipher_tfm ablkcipher
;
412 struct aead_tfm aead
;
413 struct blkcipher_tfm blkcipher
;
414 struct cipher_tfm cipher
;
415 struct hash_tfm hash
;
416 struct compress_tfm compress
;
420 void (*exit
)(struct crypto_tfm
*tfm
);
422 struct crypto_alg
*__crt_alg
;
424 void *__crt_ctx
[] CRYPTO_MINALIGN_ATTR
;
427 struct crypto_ablkcipher
{
428 struct crypto_tfm base
;
432 struct crypto_tfm base
;
435 struct crypto_blkcipher
{
436 struct crypto_tfm base
;
439 struct crypto_cipher
{
440 struct crypto_tfm base
;
444 struct crypto_tfm base
;
448 struct crypto_tfm base
;
452 struct crypto_tfm base
;
463 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
465 /* Maximum number of (rtattr) parameters for each template. */
466 #define CRYPTO_MAX_ATTRS 32
468 struct crypto_attr_alg
{
469 char name
[CRYPTO_MAX_ALG_NAME
];
472 struct crypto_attr_type
{
477 struct crypto_attr_u32
{
482 * Transform user interface.
485 struct crypto_tfm
*crypto_alloc_base(const char *alg_name
, u32 type
, u32 mask
);
486 void crypto_destroy_tfm(void *mem
, struct crypto_tfm
*tfm
);
488 static inline void crypto_free_tfm(struct crypto_tfm
*tfm
)
490 return crypto_destroy_tfm(tfm
, tfm
);
493 int alg_test(const char *driver
, const char *alg
, u32 type
, u32 mask
);
496 * Transform helpers which query the underlying algorithm.
498 static inline const char *crypto_tfm_alg_name(struct crypto_tfm
*tfm
)
500 return tfm
->__crt_alg
->cra_name
;
503 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm
*tfm
)
505 return tfm
->__crt_alg
->cra_driver_name
;
508 static inline int crypto_tfm_alg_priority(struct crypto_tfm
*tfm
)
510 return tfm
->__crt_alg
->cra_priority
;
513 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm
*tfm
)
515 return module_name(tfm
->__crt_alg
->cra_module
);
518 static inline u32
crypto_tfm_alg_type(struct crypto_tfm
*tfm
)
520 return tfm
->__crt_alg
->cra_flags
& CRYPTO_ALG_TYPE_MASK
;
523 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm
*tfm
)
525 return tfm
->__crt_alg
->cra_blocksize
;
528 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm
*tfm
)
530 return tfm
->__crt_alg
->cra_alignmask
;
533 static inline u32
crypto_tfm_get_flags(struct crypto_tfm
*tfm
)
535 return tfm
->crt_flags
;
538 static inline void crypto_tfm_set_flags(struct crypto_tfm
*tfm
, u32 flags
)
540 tfm
->crt_flags
|= flags
;
543 static inline void crypto_tfm_clear_flags(struct crypto_tfm
*tfm
, u32 flags
)
545 tfm
->crt_flags
&= ~flags
;
548 static inline void *crypto_tfm_ctx(struct crypto_tfm
*tfm
)
550 return tfm
->__crt_ctx
;
553 static inline unsigned int crypto_tfm_ctx_alignment(void)
555 struct crypto_tfm
*tfm
;
556 return __alignof__(tfm
->__crt_ctx
);
562 static inline struct crypto_ablkcipher
*__crypto_ablkcipher_cast(
563 struct crypto_tfm
*tfm
)
565 return (struct crypto_ablkcipher
*)tfm
;
568 static inline u32
crypto_skcipher_type(u32 type
)
570 type
&= ~(CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_GENIV
);
571 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
575 static inline u32
crypto_skcipher_mask(u32 mask
)
577 mask
&= ~(CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_GENIV
);
578 mask
|= CRYPTO_ALG_TYPE_BLKCIPHER_MASK
;
582 struct crypto_ablkcipher
*crypto_alloc_ablkcipher(const char *alg_name
,
585 static inline struct crypto_tfm
*crypto_ablkcipher_tfm(
586 struct crypto_ablkcipher
*tfm
)
591 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher
*tfm
)
593 crypto_free_tfm(crypto_ablkcipher_tfm(tfm
));
596 static inline int crypto_has_ablkcipher(const char *alg_name
, u32 type
,
599 return crypto_has_alg(alg_name
, crypto_skcipher_type(type
),
600 crypto_skcipher_mask(mask
));
603 static inline struct ablkcipher_tfm
*crypto_ablkcipher_crt(
604 struct crypto_ablkcipher
*tfm
)
606 return &crypto_ablkcipher_tfm(tfm
)->crt_ablkcipher
;
609 static inline unsigned int crypto_ablkcipher_ivsize(
610 struct crypto_ablkcipher
*tfm
)
612 return crypto_ablkcipher_crt(tfm
)->ivsize
;
615 static inline unsigned int crypto_ablkcipher_blocksize(
616 struct crypto_ablkcipher
*tfm
)
618 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm
));
621 static inline unsigned int crypto_ablkcipher_alignmask(
622 struct crypto_ablkcipher
*tfm
)
624 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm
));
627 static inline u32
crypto_ablkcipher_get_flags(struct crypto_ablkcipher
*tfm
)
629 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm
));
632 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher
*tfm
,
635 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm
), flags
);
638 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher
*tfm
,
641 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm
), flags
);
644 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher
*tfm
,
645 const u8
*key
, unsigned int keylen
)
647 struct ablkcipher_tfm
*crt
= crypto_ablkcipher_crt(tfm
);
649 return crt
->setkey(crt
->base
, key
, keylen
);
652 static inline struct crypto_ablkcipher
*crypto_ablkcipher_reqtfm(
653 struct ablkcipher_request
*req
)
655 return __crypto_ablkcipher_cast(req
->base
.tfm
);
658 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request
*req
)
660 struct ablkcipher_tfm
*crt
=
661 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
662 return crt
->encrypt(req
);
665 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request
*req
)
667 struct ablkcipher_tfm
*crt
=
668 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
669 return crt
->decrypt(req
);
672 static inline unsigned int crypto_ablkcipher_reqsize(
673 struct crypto_ablkcipher
*tfm
)
675 return crypto_ablkcipher_crt(tfm
)->reqsize
;
678 static inline void ablkcipher_request_set_tfm(
679 struct ablkcipher_request
*req
, struct crypto_ablkcipher
*tfm
)
681 req
->base
.tfm
= crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm
)->base
);
684 static inline struct ablkcipher_request
*ablkcipher_request_cast(
685 struct crypto_async_request
*req
)
687 return container_of(req
, struct ablkcipher_request
, base
);
690 static inline struct ablkcipher_request
*ablkcipher_request_alloc(
691 struct crypto_ablkcipher
*tfm
, gfp_t gfp
)
693 struct ablkcipher_request
*req
;
695 req
= kmalloc(sizeof(struct ablkcipher_request
) +
696 crypto_ablkcipher_reqsize(tfm
), gfp
);
699 ablkcipher_request_set_tfm(req
, tfm
);
704 static inline void ablkcipher_request_free(struct ablkcipher_request
*req
)
709 static inline void ablkcipher_request_set_callback(
710 struct ablkcipher_request
*req
,
711 u32 flags
, crypto_completion_t complete
, void *data
)
713 req
->base
.complete
= complete
;
714 req
->base
.data
= data
;
715 req
->base
.flags
= flags
;
718 static inline void ablkcipher_request_set_crypt(
719 struct ablkcipher_request
*req
,
720 struct scatterlist
*src
, struct scatterlist
*dst
,
721 unsigned int nbytes
, void *iv
)
725 req
->nbytes
= nbytes
;
729 static inline struct crypto_aead
*__crypto_aead_cast(struct crypto_tfm
*tfm
)
731 return (struct crypto_aead
*)tfm
;
734 struct crypto_aead
*crypto_alloc_aead(const char *alg_name
, u32 type
, u32 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 */