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_COMPRESS 0x00000005
38 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
40 #define CRYPTO_ALG_LARVAL 0x00000010
41 #define CRYPTO_ALG_DEAD 0x00000020
42 #define CRYPTO_ALG_DYING 0x00000040
43 #define CRYPTO_ALG_ASYNC 0x00000080
46 * Set this bit if and only if the algorithm requires another algorithm of
47 * the same type to handle corner cases.
49 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
52 * Transform masks and values (for crt_flags).
54 #define CRYPTO_TFM_REQ_MASK 0x000fff00
55 #define CRYPTO_TFM_RES_MASK 0xfff00000
57 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
58 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
59 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
60 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
61 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
62 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
63 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
64 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
67 * Miscellaneous stuff.
69 #define CRYPTO_MAX_ALG_NAME 64
72 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
73 * declaration) is used to ensure that the crypto_tfm context structure is
74 * aligned correctly for the given architecture so that there are no alignment
75 * faults for C data types. In particular, this is required on platforms such
76 * as arm where pointers are 32-bit aligned but there are data types such as
77 * u64 which require 64-bit alignment.
79 #if defined(ARCH_KMALLOC_MINALIGN)
80 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
81 #elif defined(ARCH_SLAB_MINALIGN)
82 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
85 #ifdef CRYPTO_MINALIGN
86 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
88 #define CRYPTO_MINALIGN_ATTR
92 struct crypto_ablkcipher
;
93 struct crypto_async_request
;
94 struct crypto_blkcipher
;
100 typedef void (*crypto_completion_t
)(struct crypto_async_request
*req
, int err
);
102 struct crypto_async_request
{
103 struct list_head list
;
104 crypto_completion_t complete
;
106 struct crypto_tfm
*tfm
;
111 struct ablkcipher_request
{
112 struct crypto_async_request base
;
118 struct scatterlist
*src
;
119 struct scatterlist
*dst
;
121 void *__ctx
[] CRYPTO_MINALIGN_ATTR
;
124 struct blkcipher_desc
{
125 struct crypto_blkcipher
*tfm
;
131 struct crypto_tfm
*tfm
;
132 void (*crfn
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
133 unsigned int (*prfn
)(const struct cipher_desc
*desc
, u8
*dst
,
134 const u8
*src
, unsigned int nbytes
);
139 struct crypto_hash
*tfm
;
144 * Algorithms: modular crypto algorithm implementations, managed
145 * via crypto_register_alg() and crypto_unregister_alg().
147 struct ablkcipher_alg
{
148 int (*setkey
)(struct crypto_ablkcipher
*tfm
, const u8
*key
,
149 unsigned int keylen
);
150 int (*encrypt
)(struct ablkcipher_request
*req
);
151 int (*decrypt
)(struct ablkcipher_request
*req
);
153 struct crypto_queue
*queue
;
155 unsigned int min_keysize
;
156 unsigned int max_keysize
;
160 struct blkcipher_alg
{
161 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
162 unsigned int keylen
);
163 int (*encrypt
)(struct blkcipher_desc
*desc
,
164 struct scatterlist
*dst
, struct scatterlist
*src
,
165 unsigned int nbytes
);
166 int (*decrypt
)(struct blkcipher_desc
*desc
,
167 struct scatterlist
*dst
, struct scatterlist
*src
,
168 unsigned int nbytes
);
170 unsigned int min_keysize
;
171 unsigned int max_keysize
;
176 unsigned int cia_min_keysize
;
177 unsigned int cia_max_keysize
;
178 int (*cia_setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
179 unsigned int keylen
);
180 void (*cia_encrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
181 void (*cia_decrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
185 unsigned int dia_digestsize
;
186 void (*dia_init
)(struct crypto_tfm
*tfm
);
187 void (*dia_update
)(struct crypto_tfm
*tfm
, const u8
*data
,
189 void (*dia_final
)(struct crypto_tfm
*tfm
, u8
*out
);
190 int (*dia_setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
191 unsigned int keylen
);
195 int (*init
)(struct hash_desc
*desc
);
196 int (*update
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
197 unsigned int nbytes
);
198 int (*final
)(struct hash_desc
*desc
, u8
*out
);
199 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
200 unsigned int nbytes
, u8
*out
);
201 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
202 unsigned int keylen
);
204 unsigned int digestsize
;
207 struct compress_alg
{
208 int (*coa_compress
)(struct crypto_tfm
*tfm
, const u8
*src
,
209 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
210 int (*coa_decompress
)(struct crypto_tfm
*tfm
, const u8
*src
,
211 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
214 #define cra_ablkcipher cra_u.ablkcipher
215 #define cra_blkcipher cra_u.blkcipher
216 #define cra_cipher cra_u.cipher
217 #define cra_digest cra_u.digest
218 #define cra_hash cra_u.hash
219 #define cra_compress cra_u.compress
222 struct list_head cra_list
;
223 struct list_head cra_users
;
226 unsigned int cra_blocksize
;
227 unsigned int cra_ctxsize
;
228 unsigned int cra_alignmask
;
233 char cra_name
[CRYPTO_MAX_ALG_NAME
];
234 char cra_driver_name
[CRYPTO_MAX_ALG_NAME
];
236 const struct crypto_type
*cra_type
;
239 struct ablkcipher_alg ablkcipher
;
240 struct blkcipher_alg blkcipher
;
241 struct cipher_alg cipher
;
242 struct digest_alg digest
;
243 struct hash_alg hash
;
244 struct compress_alg compress
;
247 int (*cra_init
)(struct crypto_tfm
*tfm
);
248 void (*cra_exit
)(struct crypto_tfm
*tfm
);
249 void (*cra_destroy
)(struct crypto_alg
*alg
);
251 struct module
*cra_module
;
255 * Algorithm registration interface.
257 int crypto_register_alg(struct crypto_alg
*alg
);
258 int crypto_unregister_alg(struct crypto_alg
*alg
);
261 * Algorithm query interface.
264 int crypto_has_alg(const char *name
, u32 type
, u32 mask
);
266 static inline int crypto_has_alg(const char *name
, u32 type
, u32 mask
)
273 * Transforms: user-instantiated objects which encapsulate algorithms
274 * and core processing logic. Managed via crypto_alloc_*() and
275 * crypto_free_*(), as well as the various helpers below.
278 struct ablkcipher_tfm
{
279 int (*setkey
)(struct crypto_ablkcipher
*tfm
, const u8
*key
,
280 unsigned int keylen
);
281 int (*encrypt
)(struct ablkcipher_request
*req
);
282 int (*decrypt
)(struct ablkcipher_request
*req
);
284 unsigned int reqsize
;
287 struct blkcipher_tfm
{
289 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
290 unsigned int keylen
);
291 int (*encrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
292 struct scatterlist
*src
, unsigned int nbytes
);
293 int (*decrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
294 struct scatterlist
*src
, unsigned int nbytes
);
298 int (*cit_setkey
)(struct crypto_tfm
*tfm
,
299 const u8
*key
, unsigned int keylen
);
300 void (*cit_encrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
301 void (*cit_decrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
305 int (*init
)(struct hash_desc
*desc
);
306 int (*update
)(struct hash_desc
*desc
,
307 struct scatterlist
*sg
, unsigned int nsg
);
308 int (*final
)(struct hash_desc
*desc
, u8
*out
);
309 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
310 unsigned int nsg
, u8
*out
);
311 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
312 unsigned int keylen
);
313 unsigned int digestsize
;
316 struct compress_tfm
{
317 int (*cot_compress
)(struct crypto_tfm
*tfm
,
318 const u8
*src
, unsigned int slen
,
319 u8
*dst
, unsigned int *dlen
);
320 int (*cot_decompress
)(struct crypto_tfm
*tfm
,
321 const u8
*src
, unsigned int slen
,
322 u8
*dst
, unsigned int *dlen
);
325 #define crt_ablkcipher crt_u.ablkcipher
326 #define crt_blkcipher crt_u.blkcipher
327 #define crt_cipher crt_u.cipher
328 #define crt_hash crt_u.hash
329 #define crt_compress crt_u.compress
336 struct ablkcipher_tfm ablkcipher
;
337 struct blkcipher_tfm blkcipher
;
338 struct cipher_tfm cipher
;
339 struct hash_tfm hash
;
340 struct compress_tfm compress
;
343 struct crypto_alg
*__crt_alg
;
345 void *__crt_ctx
[] CRYPTO_MINALIGN_ATTR
;
348 struct crypto_ablkcipher
{
349 struct crypto_tfm base
;
352 struct crypto_blkcipher
{
353 struct crypto_tfm base
;
356 struct crypto_cipher
{
357 struct crypto_tfm base
;
361 struct crypto_tfm base
;
365 struct crypto_tfm base
;
375 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
377 struct crypto_attr_alg
{
378 char name
[CRYPTO_MAX_ALG_NAME
];
381 struct crypto_attr_type
{
387 * Transform user interface.
390 struct crypto_tfm
*crypto_alloc_tfm(const char *alg_name
, u32 tfm_flags
);
391 struct crypto_tfm
*crypto_alloc_base(const char *alg_name
, u32 type
, u32 mask
);
392 void crypto_free_tfm(struct crypto_tfm
*tfm
);
395 * Transform helpers which query the underlying algorithm.
397 static inline const char *crypto_tfm_alg_name(struct crypto_tfm
*tfm
)
399 return tfm
->__crt_alg
->cra_name
;
402 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm
*tfm
)
404 return tfm
->__crt_alg
->cra_driver_name
;
407 static inline int crypto_tfm_alg_priority(struct crypto_tfm
*tfm
)
409 return tfm
->__crt_alg
->cra_priority
;
412 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm
*tfm
)
414 return module_name(tfm
->__crt_alg
->cra_module
);
417 static inline u32
crypto_tfm_alg_type(struct crypto_tfm
*tfm
)
419 return tfm
->__crt_alg
->cra_flags
& CRYPTO_ALG_TYPE_MASK
;
422 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm
*tfm
)
424 return tfm
->__crt_alg
->cra_blocksize
;
427 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm
*tfm
)
429 return tfm
->__crt_alg
->cra_alignmask
;
432 static inline u32
crypto_tfm_get_flags(struct crypto_tfm
*tfm
)
434 return tfm
->crt_flags
;
437 static inline void crypto_tfm_set_flags(struct crypto_tfm
*tfm
, u32 flags
)
439 tfm
->crt_flags
|= flags
;
442 static inline void crypto_tfm_clear_flags(struct crypto_tfm
*tfm
, u32 flags
)
444 tfm
->crt_flags
&= ~flags
;
447 static inline void *crypto_tfm_ctx(struct crypto_tfm
*tfm
)
449 return tfm
->__crt_ctx
;
452 static inline unsigned int crypto_tfm_ctx_alignment(void)
454 struct crypto_tfm
*tfm
;
455 return __alignof__(tfm
->__crt_ctx
);
461 static inline struct crypto_ablkcipher
*__crypto_ablkcipher_cast(
462 struct crypto_tfm
*tfm
)
464 return (struct crypto_ablkcipher
*)tfm
;
467 static inline struct crypto_ablkcipher
*crypto_alloc_ablkcipher(
468 const char *alg_name
, u32 type
, u32 mask
)
470 type
&= ~CRYPTO_ALG_TYPE_MASK
;
471 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
472 mask
|= CRYPTO_ALG_TYPE_MASK
;
474 return __crypto_ablkcipher_cast(
475 crypto_alloc_base(alg_name
, type
, mask
));
478 static inline struct crypto_tfm
*crypto_ablkcipher_tfm(
479 struct crypto_ablkcipher
*tfm
)
484 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher
*tfm
)
486 crypto_free_tfm(crypto_ablkcipher_tfm(tfm
));
489 static inline int crypto_has_ablkcipher(const char *alg_name
, u32 type
,
492 type
&= ~CRYPTO_ALG_TYPE_MASK
;
493 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
494 mask
|= CRYPTO_ALG_TYPE_MASK
;
496 return crypto_has_alg(alg_name
, type
, mask
);
499 static inline struct ablkcipher_tfm
*crypto_ablkcipher_crt(
500 struct crypto_ablkcipher
*tfm
)
502 return &crypto_ablkcipher_tfm(tfm
)->crt_ablkcipher
;
505 static inline unsigned int crypto_ablkcipher_ivsize(
506 struct crypto_ablkcipher
*tfm
)
508 return crypto_ablkcipher_crt(tfm
)->ivsize
;
511 static inline unsigned int crypto_ablkcipher_blocksize(
512 struct crypto_ablkcipher
*tfm
)
514 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm
));
517 static inline unsigned int crypto_ablkcipher_alignmask(
518 struct crypto_ablkcipher
*tfm
)
520 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm
));
523 static inline u32
crypto_ablkcipher_get_flags(struct crypto_ablkcipher
*tfm
)
525 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm
));
528 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher
*tfm
,
531 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm
), flags
);
534 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher
*tfm
,
537 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm
), flags
);
540 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher
*tfm
,
541 const u8
*key
, unsigned int keylen
)
543 return crypto_ablkcipher_crt(tfm
)->setkey(tfm
, key
, keylen
);
546 static inline struct crypto_ablkcipher
*crypto_ablkcipher_reqtfm(
547 struct ablkcipher_request
*req
)
549 return __crypto_ablkcipher_cast(req
->base
.tfm
);
552 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request
*req
)
554 struct ablkcipher_tfm
*crt
=
555 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
556 return crt
->encrypt(req
);
559 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request
*req
)
561 struct ablkcipher_tfm
*crt
=
562 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
563 return crt
->decrypt(req
);
566 static inline int crypto_ablkcipher_reqsize(struct crypto_ablkcipher
*tfm
)
568 return crypto_ablkcipher_crt(tfm
)->reqsize
;
571 static inline void ablkcipher_request_set_tfm(
572 struct ablkcipher_request
*req
, struct crypto_ablkcipher
*tfm
)
574 req
->base
.tfm
= crypto_ablkcipher_tfm(tfm
);
577 static inline struct ablkcipher_request
*ablkcipher_request_cast(
578 struct crypto_async_request
*req
)
580 return container_of(req
, struct ablkcipher_request
, base
);
583 static inline struct ablkcipher_request
*ablkcipher_request_alloc(
584 struct crypto_ablkcipher
*tfm
, gfp_t gfp
)
586 struct ablkcipher_request
*req
;
588 req
= kmalloc(sizeof(struct ablkcipher_request
) +
589 crypto_ablkcipher_reqsize(tfm
), gfp
);
592 ablkcipher_request_set_tfm(req
, tfm
);
597 static inline void ablkcipher_request_free(struct ablkcipher_request
*req
)
602 static inline void ablkcipher_request_set_callback(
603 struct ablkcipher_request
*req
,
604 u32 flags
, crypto_completion_t complete
, void *data
)
606 req
->base
.complete
= complete
;
607 req
->base
.data
= data
;
608 req
->base
.flags
= flags
;
611 static inline void ablkcipher_request_set_crypt(
612 struct ablkcipher_request
*req
,
613 struct scatterlist
*src
, struct scatterlist
*dst
,
614 unsigned int nbytes
, void *iv
)
618 req
->nbytes
= nbytes
;
622 static inline struct crypto_blkcipher
*__crypto_blkcipher_cast(
623 struct crypto_tfm
*tfm
)
625 return (struct crypto_blkcipher
*)tfm
;
628 static inline struct crypto_blkcipher
*crypto_blkcipher_cast(
629 struct crypto_tfm
*tfm
)
631 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_BLKCIPHER
);
632 return __crypto_blkcipher_cast(tfm
);
635 static inline struct crypto_blkcipher
*crypto_alloc_blkcipher(
636 const char *alg_name
, u32 type
, u32 mask
)
638 type
&= ~(CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
);
639 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
640 mask
|= CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
;
642 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
645 static inline struct crypto_tfm
*crypto_blkcipher_tfm(
646 struct crypto_blkcipher
*tfm
)
651 static inline void crypto_free_blkcipher(struct crypto_blkcipher
*tfm
)
653 crypto_free_tfm(crypto_blkcipher_tfm(tfm
));
656 static inline int crypto_has_blkcipher(const char *alg_name
, u32 type
, u32 mask
)
658 type
&= ~(CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
);
659 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
660 mask
|= CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
;
662 return crypto_has_alg(alg_name
, type
, mask
);
665 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher
*tfm
)
667 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm
));
670 static inline struct blkcipher_tfm
*crypto_blkcipher_crt(
671 struct crypto_blkcipher
*tfm
)
673 return &crypto_blkcipher_tfm(tfm
)->crt_blkcipher
;
676 static inline struct blkcipher_alg
*crypto_blkcipher_alg(
677 struct crypto_blkcipher
*tfm
)
679 return &crypto_blkcipher_tfm(tfm
)->__crt_alg
->cra_blkcipher
;
682 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher
*tfm
)
684 return crypto_blkcipher_alg(tfm
)->ivsize
;
687 static inline unsigned int crypto_blkcipher_blocksize(
688 struct crypto_blkcipher
*tfm
)
690 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm
));
693 static inline unsigned int crypto_blkcipher_alignmask(
694 struct crypto_blkcipher
*tfm
)
696 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm
));
699 static inline u32
crypto_blkcipher_get_flags(struct crypto_blkcipher
*tfm
)
701 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm
));
704 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher
*tfm
,
707 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm
), flags
);
710 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher
*tfm
,
713 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm
), flags
);
716 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher
*tfm
,
717 const u8
*key
, unsigned int keylen
)
719 return crypto_blkcipher_crt(tfm
)->setkey(crypto_blkcipher_tfm(tfm
),
723 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc
*desc
,
724 struct scatterlist
*dst
,
725 struct scatterlist
*src
,
728 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
729 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
732 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc
*desc
,
733 struct scatterlist
*dst
,
734 struct scatterlist
*src
,
737 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
740 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc
*desc
,
741 struct scatterlist
*dst
,
742 struct scatterlist
*src
,
745 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
746 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
749 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc
*desc
,
750 struct scatterlist
*dst
,
751 struct scatterlist
*src
,
754 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
757 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher
*tfm
,
758 const u8
*src
, unsigned int len
)
760 memcpy(crypto_blkcipher_crt(tfm
)->iv
, src
, len
);
763 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher
*tfm
,
764 u8
*dst
, unsigned int len
)
766 memcpy(dst
, crypto_blkcipher_crt(tfm
)->iv
, len
);
769 static inline struct crypto_cipher
*__crypto_cipher_cast(struct crypto_tfm
*tfm
)
771 return (struct crypto_cipher
*)tfm
;
774 static inline struct crypto_cipher
*crypto_cipher_cast(struct crypto_tfm
*tfm
)
776 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
777 return __crypto_cipher_cast(tfm
);
780 static inline struct crypto_cipher
*crypto_alloc_cipher(const char *alg_name
,
783 type
&= ~CRYPTO_ALG_TYPE_MASK
;
784 type
|= CRYPTO_ALG_TYPE_CIPHER
;
785 mask
|= CRYPTO_ALG_TYPE_MASK
;
787 return __crypto_cipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
790 static inline struct crypto_tfm
*crypto_cipher_tfm(struct crypto_cipher
*tfm
)
795 static inline void crypto_free_cipher(struct crypto_cipher
*tfm
)
797 crypto_free_tfm(crypto_cipher_tfm(tfm
));
800 static inline int crypto_has_cipher(const char *alg_name
, u32 type
, u32 mask
)
802 type
&= ~CRYPTO_ALG_TYPE_MASK
;
803 type
|= CRYPTO_ALG_TYPE_CIPHER
;
804 mask
|= CRYPTO_ALG_TYPE_MASK
;
806 return crypto_has_alg(alg_name
, type
, mask
);
809 static inline struct cipher_tfm
*crypto_cipher_crt(struct crypto_cipher
*tfm
)
811 return &crypto_cipher_tfm(tfm
)->crt_cipher
;
814 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher
*tfm
)
816 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm
));
819 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher
*tfm
)
821 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm
));
824 static inline u32
crypto_cipher_get_flags(struct crypto_cipher
*tfm
)
826 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm
));
829 static inline void crypto_cipher_set_flags(struct crypto_cipher
*tfm
,
832 crypto_tfm_set_flags(crypto_cipher_tfm(tfm
), flags
);
835 static inline void crypto_cipher_clear_flags(struct crypto_cipher
*tfm
,
838 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm
), flags
);
841 static inline int crypto_cipher_setkey(struct crypto_cipher
*tfm
,
842 const u8
*key
, unsigned int keylen
)
844 return crypto_cipher_crt(tfm
)->cit_setkey(crypto_cipher_tfm(tfm
),
848 static inline void crypto_cipher_encrypt_one(struct crypto_cipher
*tfm
,
849 u8
*dst
, const u8
*src
)
851 crypto_cipher_crt(tfm
)->cit_encrypt_one(crypto_cipher_tfm(tfm
),
855 static inline void crypto_cipher_decrypt_one(struct crypto_cipher
*tfm
,
856 u8
*dst
, const u8
*src
)
858 crypto_cipher_crt(tfm
)->cit_decrypt_one(crypto_cipher_tfm(tfm
),
862 static inline struct crypto_hash
*__crypto_hash_cast(struct crypto_tfm
*tfm
)
864 return (struct crypto_hash
*)tfm
;
867 static inline struct crypto_hash
*crypto_hash_cast(struct crypto_tfm
*tfm
)
869 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_HASH
) &
870 CRYPTO_ALG_TYPE_HASH_MASK
);
871 return __crypto_hash_cast(tfm
);
874 static inline struct crypto_hash
*crypto_alloc_hash(const char *alg_name
,
877 type
&= ~CRYPTO_ALG_TYPE_MASK
;
878 type
|= CRYPTO_ALG_TYPE_HASH
;
879 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
881 return __crypto_hash_cast(crypto_alloc_base(alg_name
, type
, mask
));
884 static inline struct crypto_tfm
*crypto_hash_tfm(struct crypto_hash
*tfm
)
889 static inline void crypto_free_hash(struct crypto_hash
*tfm
)
891 crypto_free_tfm(crypto_hash_tfm(tfm
));
894 static inline int crypto_has_hash(const char *alg_name
, u32 type
, u32 mask
)
896 type
&= ~CRYPTO_ALG_TYPE_MASK
;
897 type
|= CRYPTO_ALG_TYPE_HASH
;
898 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
900 return crypto_has_alg(alg_name
, type
, mask
);
903 static inline struct hash_tfm
*crypto_hash_crt(struct crypto_hash
*tfm
)
905 return &crypto_hash_tfm(tfm
)->crt_hash
;
908 static inline unsigned int crypto_hash_blocksize(struct crypto_hash
*tfm
)
910 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm
));
913 static inline unsigned int crypto_hash_alignmask(struct crypto_hash
*tfm
)
915 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm
));
918 static inline unsigned int crypto_hash_digestsize(struct crypto_hash
*tfm
)
920 return crypto_hash_crt(tfm
)->digestsize
;
923 static inline u32
crypto_hash_get_flags(struct crypto_hash
*tfm
)
925 return crypto_tfm_get_flags(crypto_hash_tfm(tfm
));
928 static inline void crypto_hash_set_flags(struct crypto_hash
*tfm
, u32 flags
)
930 crypto_tfm_set_flags(crypto_hash_tfm(tfm
), flags
);
933 static inline void crypto_hash_clear_flags(struct crypto_hash
*tfm
, u32 flags
)
935 crypto_tfm_clear_flags(crypto_hash_tfm(tfm
), flags
);
938 static inline int crypto_hash_init(struct hash_desc
*desc
)
940 return crypto_hash_crt(desc
->tfm
)->init(desc
);
943 static inline int crypto_hash_update(struct hash_desc
*desc
,
944 struct scatterlist
*sg
,
947 return crypto_hash_crt(desc
->tfm
)->update(desc
, sg
, nbytes
);
950 static inline int crypto_hash_final(struct hash_desc
*desc
, u8
*out
)
952 return crypto_hash_crt(desc
->tfm
)->final(desc
, out
);
955 static inline int crypto_hash_digest(struct hash_desc
*desc
,
956 struct scatterlist
*sg
,
957 unsigned int nbytes
, u8
*out
)
959 return crypto_hash_crt(desc
->tfm
)->digest(desc
, sg
, nbytes
, out
);
962 static inline int crypto_hash_setkey(struct crypto_hash
*hash
,
963 const u8
*key
, unsigned int keylen
)
965 return crypto_hash_crt(hash
)->setkey(hash
, key
, keylen
);
968 static inline struct crypto_comp
*__crypto_comp_cast(struct crypto_tfm
*tfm
)
970 return (struct crypto_comp
*)tfm
;
973 static inline struct crypto_comp
*crypto_comp_cast(struct crypto_tfm
*tfm
)
975 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_COMPRESS
) &
976 CRYPTO_ALG_TYPE_MASK
);
977 return __crypto_comp_cast(tfm
);
980 static inline struct crypto_comp
*crypto_alloc_comp(const char *alg_name
,
983 type
&= ~CRYPTO_ALG_TYPE_MASK
;
984 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
985 mask
|= CRYPTO_ALG_TYPE_MASK
;
987 return __crypto_comp_cast(crypto_alloc_base(alg_name
, type
, mask
));
990 static inline struct crypto_tfm
*crypto_comp_tfm(struct crypto_comp
*tfm
)
995 static inline void crypto_free_comp(struct crypto_comp
*tfm
)
997 crypto_free_tfm(crypto_comp_tfm(tfm
));
1000 static inline int crypto_has_comp(const char *alg_name
, u32 type
, u32 mask
)
1002 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1003 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1004 mask
|= CRYPTO_ALG_TYPE_MASK
;
1006 return crypto_has_alg(alg_name
, type
, mask
);
1009 static inline const char *crypto_comp_name(struct crypto_comp
*tfm
)
1011 return crypto_tfm_alg_name(crypto_comp_tfm(tfm
));
1014 static inline struct compress_tfm
*crypto_comp_crt(struct crypto_comp
*tfm
)
1016 return &crypto_comp_tfm(tfm
)->crt_compress
;
1019 static inline int crypto_comp_compress(struct crypto_comp
*tfm
,
1020 const u8
*src
, unsigned int slen
,
1021 u8
*dst
, unsigned int *dlen
)
1023 return crypto_comp_crt(tfm
)->cot_compress(crypto_comp_tfm(tfm
),
1024 src
, slen
, dst
, dlen
);
1027 static inline int crypto_comp_decompress(struct crypto_comp
*tfm
,
1028 const u8
*src
, unsigned int slen
,
1029 u8
*dst
, unsigned int *dlen
)
1031 return crypto_comp_crt(tfm
)->cot_decompress(crypto_comp_tfm(tfm
),
1032 src
, slen
, dst
, dlen
);
1035 #endif /* _LINUX_CRYPTO_H */