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_alg_available(const char *name
, u32 flags
)
265 __deprecated_for_modules
;
266 int crypto_has_alg(const char *name
, u32 type
, u32 mask
);
268 static int crypto_alg_available(const char *name
, u32 flags
)
269 __deprecated_for_modules
;
270 static inline int crypto_has_alg(const char *name
, u32 type
, u32 mask
)
277 * Transforms: user-instantiated objects which encapsulate algorithms
278 * and core processing logic. Managed via crypto_alloc_*() and
279 * crypto_free_*(), as well as the various helpers below.
282 struct ablkcipher_tfm
{
283 int (*setkey
)(struct crypto_ablkcipher
*tfm
, const u8
*key
,
284 unsigned int keylen
);
285 int (*encrypt
)(struct ablkcipher_request
*req
);
286 int (*decrypt
)(struct ablkcipher_request
*req
);
288 unsigned int reqsize
;
291 struct blkcipher_tfm
{
293 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
294 unsigned int keylen
);
295 int (*encrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
296 struct scatterlist
*src
, unsigned int nbytes
);
297 int (*decrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
298 struct scatterlist
*src
, unsigned int nbytes
);
303 unsigned int cit_ivsize
;
305 int (*cit_setkey
)(struct crypto_tfm
*tfm
,
306 const u8
*key
, unsigned int keylen
);
307 int (*cit_encrypt
)(struct crypto_tfm
*tfm
,
308 struct scatterlist
*dst
,
309 struct scatterlist
*src
,
310 unsigned int nbytes
);
311 int (*cit_encrypt_iv
)(struct crypto_tfm
*tfm
,
312 struct scatterlist
*dst
,
313 struct scatterlist
*src
,
314 unsigned int nbytes
, u8
*iv
);
315 int (*cit_decrypt
)(struct crypto_tfm
*tfm
,
316 struct scatterlist
*dst
,
317 struct scatterlist
*src
,
318 unsigned int nbytes
);
319 int (*cit_decrypt_iv
)(struct crypto_tfm
*tfm
,
320 struct scatterlist
*dst
,
321 struct scatterlist
*src
,
322 unsigned int nbytes
, u8
*iv
);
323 void (*cit_xor_block
)(u8
*dst
, const u8
*src
);
324 void (*cit_encrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
325 void (*cit_decrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
329 int (*init
)(struct hash_desc
*desc
);
330 int (*update
)(struct hash_desc
*desc
,
331 struct scatterlist
*sg
, unsigned int nsg
);
332 int (*final
)(struct hash_desc
*desc
, u8
*out
);
333 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
334 unsigned int nsg
, u8
*out
);
335 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
336 unsigned int keylen
);
337 unsigned int digestsize
;
340 struct compress_tfm
{
341 int (*cot_compress
)(struct crypto_tfm
*tfm
,
342 const u8
*src
, unsigned int slen
,
343 u8
*dst
, unsigned int *dlen
);
344 int (*cot_decompress
)(struct crypto_tfm
*tfm
,
345 const u8
*src
, unsigned int slen
,
346 u8
*dst
, unsigned int *dlen
);
349 #define crt_ablkcipher crt_u.ablkcipher
350 #define crt_blkcipher crt_u.blkcipher
351 #define crt_cipher crt_u.cipher
352 #define crt_hash crt_u.hash
353 #define crt_compress crt_u.compress
360 struct ablkcipher_tfm ablkcipher
;
361 struct blkcipher_tfm blkcipher
;
362 struct cipher_tfm cipher
;
363 struct hash_tfm hash
;
364 struct compress_tfm compress
;
367 struct crypto_alg
*__crt_alg
;
369 void *__crt_ctx
[] CRYPTO_MINALIGN_ATTR
;
372 struct crypto_ablkcipher
{
373 struct crypto_tfm base
;
376 struct crypto_blkcipher
{
377 struct crypto_tfm base
;
380 struct crypto_cipher
{
381 struct crypto_tfm base
;
385 struct crypto_tfm base
;
389 struct crypto_tfm base
;
399 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
401 struct crypto_attr_alg
{
402 char name
[CRYPTO_MAX_ALG_NAME
];
405 struct crypto_attr_type
{
411 * Transform user interface.
414 struct crypto_tfm
*crypto_alloc_tfm(const char *alg_name
, u32 tfm_flags
);
415 struct crypto_tfm
*crypto_alloc_base(const char *alg_name
, u32 type
, u32 mask
);
416 void crypto_free_tfm(struct crypto_tfm
*tfm
);
419 * Transform helpers which query the underlying algorithm.
421 static inline const char *crypto_tfm_alg_name(struct crypto_tfm
*tfm
)
423 return tfm
->__crt_alg
->cra_name
;
426 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm
*tfm
)
428 return tfm
->__crt_alg
->cra_driver_name
;
431 static inline int crypto_tfm_alg_priority(struct crypto_tfm
*tfm
)
433 return tfm
->__crt_alg
->cra_priority
;
436 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm
*tfm
)
438 return module_name(tfm
->__crt_alg
->cra_module
);
441 static inline u32
crypto_tfm_alg_type(struct crypto_tfm
*tfm
)
443 return tfm
->__crt_alg
->cra_flags
& CRYPTO_ALG_TYPE_MASK
;
446 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm
*tfm
)
448 return tfm
->__crt_alg
->cra_blocksize
;
451 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm
*tfm
)
453 return tfm
->__crt_alg
->cra_alignmask
;
456 static inline u32
crypto_tfm_get_flags(struct crypto_tfm
*tfm
)
458 return tfm
->crt_flags
;
461 static inline void crypto_tfm_set_flags(struct crypto_tfm
*tfm
, u32 flags
)
463 tfm
->crt_flags
|= flags
;
466 static inline void crypto_tfm_clear_flags(struct crypto_tfm
*tfm
, u32 flags
)
468 tfm
->crt_flags
&= ~flags
;
471 static inline void *crypto_tfm_ctx(struct crypto_tfm
*tfm
)
473 return tfm
->__crt_ctx
;
476 static inline unsigned int crypto_tfm_ctx_alignment(void)
478 struct crypto_tfm
*tfm
;
479 return __alignof__(tfm
->__crt_ctx
);
485 static inline struct crypto_ablkcipher
*__crypto_ablkcipher_cast(
486 struct crypto_tfm
*tfm
)
488 return (struct crypto_ablkcipher
*)tfm
;
491 static inline struct crypto_ablkcipher
*crypto_alloc_ablkcipher(
492 const char *alg_name
, u32 type
, u32 mask
)
494 type
&= ~CRYPTO_ALG_TYPE_MASK
;
495 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
496 mask
|= CRYPTO_ALG_TYPE_MASK
;
498 return __crypto_ablkcipher_cast(
499 crypto_alloc_base(alg_name
, type
, mask
));
502 static inline struct crypto_tfm
*crypto_ablkcipher_tfm(
503 struct crypto_ablkcipher
*tfm
)
508 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher
*tfm
)
510 crypto_free_tfm(crypto_ablkcipher_tfm(tfm
));
513 static inline int crypto_has_ablkcipher(const char *alg_name
, u32 type
,
516 type
&= ~CRYPTO_ALG_TYPE_MASK
;
517 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
518 mask
|= CRYPTO_ALG_TYPE_MASK
;
520 return crypto_has_alg(alg_name
, type
, mask
);
523 static inline struct ablkcipher_tfm
*crypto_ablkcipher_crt(
524 struct crypto_ablkcipher
*tfm
)
526 return &crypto_ablkcipher_tfm(tfm
)->crt_ablkcipher
;
529 static inline unsigned int crypto_ablkcipher_ivsize(
530 struct crypto_ablkcipher
*tfm
)
532 return crypto_ablkcipher_crt(tfm
)->ivsize
;
535 static inline unsigned int crypto_ablkcipher_blocksize(
536 struct crypto_ablkcipher
*tfm
)
538 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm
));
541 static inline unsigned int crypto_ablkcipher_alignmask(
542 struct crypto_ablkcipher
*tfm
)
544 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm
));
547 static inline u32
crypto_ablkcipher_get_flags(struct crypto_ablkcipher
*tfm
)
549 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm
));
552 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher
*tfm
,
555 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm
), flags
);
558 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher
*tfm
,
561 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm
), flags
);
564 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher
*tfm
,
565 const u8
*key
, unsigned int keylen
)
567 return crypto_ablkcipher_crt(tfm
)->setkey(tfm
, key
, keylen
);
570 static inline struct crypto_ablkcipher
*crypto_ablkcipher_reqtfm(
571 struct ablkcipher_request
*req
)
573 return __crypto_ablkcipher_cast(req
->base
.tfm
);
576 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request
*req
)
578 struct ablkcipher_tfm
*crt
=
579 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
580 return crt
->encrypt(req
);
583 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request
*req
)
585 struct ablkcipher_tfm
*crt
=
586 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
587 return crt
->decrypt(req
);
590 static inline int crypto_ablkcipher_reqsize(struct crypto_ablkcipher
*tfm
)
592 return crypto_ablkcipher_crt(tfm
)->reqsize
;
595 static inline void ablkcipher_request_set_tfm(
596 struct ablkcipher_request
*req
, struct crypto_ablkcipher
*tfm
)
598 req
->base
.tfm
= crypto_ablkcipher_tfm(tfm
);
601 static inline struct ablkcipher_request
*ablkcipher_request_cast(
602 struct crypto_async_request
*req
)
604 return container_of(req
, struct ablkcipher_request
, base
);
607 static inline struct ablkcipher_request
*ablkcipher_request_alloc(
608 struct crypto_ablkcipher
*tfm
, gfp_t gfp
)
610 struct ablkcipher_request
*req
;
612 req
= kmalloc(sizeof(struct ablkcipher_request
) +
613 crypto_ablkcipher_reqsize(tfm
), gfp
);
616 ablkcipher_request_set_tfm(req
, tfm
);
621 static inline void ablkcipher_request_free(struct ablkcipher_request
*req
)
626 static inline void ablkcipher_request_set_callback(
627 struct ablkcipher_request
*req
,
628 u32 flags
, crypto_completion_t complete
, void *data
)
630 req
->base
.complete
= complete
;
631 req
->base
.data
= data
;
632 req
->base
.flags
= flags
;
635 static inline void ablkcipher_request_set_crypt(
636 struct ablkcipher_request
*req
,
637 struct scatterlist
*src
, struct scatterlist
*dst
,
638 unsigned int nbytes
, void *iv
)
642 req
->nbytes
= nbytes
;
646 static inline struct crypto_blkcipher
*__crypto_blkcipher_cast(
647 struct crypto_tfm
*tfm
)
649 return (struct crypto_blkcipher
*)tfm
;
652 static inline struct crypto_blkcipher
*crypto_blkcipher_cast(
653 struct crypto_tfm
*tfm
)
655 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_BLKCIPHER
);
656 return __crypto_blkcipher_cast(tfm
);
659 static inline struct crypto_blkcipher
*crypto_alloc_blkcipher(
660 const char *alg_name
, u32 type
, u32 mask
)
662 type
&= ~(CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
);
663 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
664 mask
|= CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
;
666 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
669 static inline struct crypto_tfm
*crypto_blkcipher_tfm(
670 struct crypto_blkcipher
*tfm
)
675 static inline void crypto_free_blkcipher(struct crypto_blkcipher
*tfm
)
677 crypto_free_tfm(crypto_blkcipher_tfm(tfm
));
680 static inline int crypto_has_blkcipher(const char *alg_name
, u32 type
, u32 mask
)
682 type
&= ~(CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
);
683 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
684 mask
|= CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
;
686 return crypto_has_alg(alg_name
, type
, mask
);
689 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher
*tfm
)
691 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm
));
694 static inline struct blkcipher_tfm
*crypto_blkcipher_crt(
695 struct crypto_blkcipher
*tfm
)
697 return &crypto_blkcipher_tfm(tfm
)->crt_blkcipher
;
700 static inline struct blkcipher_alg
*crypto_blkcipher_alg(
701 struct crypto_blkcipher
*tfm
)
703 return &crypto_blkcipher_tfm(tfm
)->__crt_alg
->cra_blkcipher
;
706 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher
*tfm
)
708 return crypto_blkcipher_alg(tfm
)->ivsize
;
711 static inline unsigned int crypto_blkcipher_blocksize(
712 struct crypto_blkcipher
*tfm
)
714 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm
));
717 static inline unsigned int crypto_blkcipher_alignmask(
718 struct crypto_blkcipher
*tfm
)
720 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm
));
723 static inline u32
crypto_blkcipher_get_flags(struct crypto_blkcipher
*tfm
)
725 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm
));
728 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher
*tfm
,
731 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm
), flags
);
734 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher
*tfm
,
737 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm
), flags
);
740 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher
*tfm
,
741 const u8
*key
, unsigned int keylen
)
743 return crypto_blkcipher_crt(tfm
)->setkey(crypto_blkcipher_tfm(tfm
),
747 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc
*desc
,
748 struct scatterlist
*dst
,
749 struct scatterlist
*src
,
752 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
753 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
756 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc
*desc
,
757 struct scatterlist
*dst
,
758 struct scatterlist
*src
,
761 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
764 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc
*desc
,
765 struct scatterlist
*dst
,
766 struct scatterlist
*src
,
769 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
770 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
773 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc
*desc
,
774 struct scatterlist
*dst
,
775 struct scatterlist
*src
,
778 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
781 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher
*tfm
,
782 const u8
*src
, unsigned int len
)
784 memcpy(crypto_blkcipher_crt(tfm
)->iv
, src
, len
);
787 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher
*tfm
,
788 u8
*dst
, unsigned int len
)
790 memcpy(dst
, crypto_blkcipher_crt(tfm
)->iv
, len
);
793 static inline struct crypto_cipher
*__crypto_cipher_cast(struct crypto_tfm
*tfm
)
795 return (struct crypto_cipher
*)tfm
;
798 static inline struct crypto_cipher
*crypto_cipher_cast(struct crypto_tfm
*tfm
)
800 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
801 return __crypto_cipher_cast(tfm
);
804 static inline struct crypto_cipher
*crypto_alloc_cipher(const char *alg_name
,
807 type
&= ~CRYPTO_ALG_TYPE_MASK
;
808 type
|= CRYPTO_ALG_TYPE_CIPHER
;
809 mask
|= CRYPTO_ALG_TYPE_MASK
;
811 return __crypto_cipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
814 static inline struct crypto_tfm
*crypto_cipher_tfm(struct crypto_cipher
*tfm
)
819 static inline void crypto_free_cipher(struct crypto_cipher
*tfm
)
821 crypto_free_tfm(crypto_cipher_tfm(tfm
));
824 static inline int crypto_has_cipher(const char *alg_name
, u32 type
, u32 mask
)
826 type
&= ~CRYPTO_ALG_TYPE_MASK
;
827 type
|= CRYPTO_ALG_TYPE_CIPHER
;
828 mask
|= CRYPTO_ALG_TYPE_MASK
;
830 return crypto_has_alg(alg_name
, type
, mask
);
833 static inline struct cipher_tfm
*crypto_cipher_crt(struct crypto_cipher
*tfm
)
835 return &crypto_cipher_tfm(tfm
)->crt_cipher
;
838 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher
*tfm
)
840 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm
));
843 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher
*tfm
)
845 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm
));
848 static inline u32
crypto_cipher_get_flags(struct crypto_cipher
*tfm
)
850 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm
));
853 static inline void crypto_cipher_set_flags(struct crypto_cipher
*tfm
,
856 crypto_tfm_set_flags(crypto_cipher_tfm(tfm
), flags
);
859 static inline void crypto_cipher_clear_flags(struct crypto_cipher
*tfm
,
862 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm
), flags
);
865 static inline int crypto_cipher_setkey(struct crypto_cipher
*tfm
,
866 const u8
*key
, unsigned int keylen
)
868 return crypto_cipher_crt(tfm
)->cit_setkey(crypto_cipher_tfm(tfm
),
872 static inline void crypto_cipher_encrypt_one(struct crypto_cipher
*tfm
,
873 u8
*dst
, const u8
*src
)
875 crypto_cipher_crt(tfm
)->cit_encrypt_one(crypto_cipher_tfm(tfm
),
879 static inline void crypto_cipher_decrypt_one(struct crypto_cipher
*tfm
,
880 u8
*dst
, const u8
*src
)
882 crypto_cipher_crt(tfm
)->cit_decrypt_one(crypto_cipher_tfm(tfm
),
886 void crypto_digest_init(struct crypto_tfm
*tfm
) __deprecated_for_modules
;
887 void crypto_digest_update(struct crypto_tfm
*tfm
,
888 struct scatterlist
*sg
, unsigned int nsg
)
889 __deprecated_for_modules
;
890 void crypto_digest_final(struct crypto_tfm
*tfm
, u8
*out
)
891 __deprecated_for_modules
;
892 void crypto_digest_digest(struct crypto_tfm
*tfm
,
893 struct scatterlist
*sg
, unsigned int nsg
, u8
*out
)
894 __deprecated_for_modules
;
896 static inline struct crypto_hash
*__crypto_hash_cast(struct crypto_tfm
*tfm
)
898 return (struct crypto_hash
*)tfm
;
901 static inline struct crypto_hash
*crypto_hash_cast(struct crypto_tfm
*tfm
)
903 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_HASH
) &
904 CRYPTO_ALG_TYPE_HASH_MASK
);
905 return __crypto_hash_cast(tfm
);
908 static int crypto_digest_setkey(struct crypto_tfm
*tfm
, const u8
*key
,
909 unsigned int keylen
) __deprecated
;
910 static inline int crypto_digest_setkey(struct crypto_tfm
*tfm
,
911 const u8
*key
, unsigned int keylen
)
913 return tfm
->crt_hash
.setkey(crypto_hash_cast(tfm
), key
, keylen
);
916 static inline struct crypto_hash
*crypto_alloc_hash(const char *alg_name
,
919 type
&= ~CRYPTO_ALG_TYPE_MASK
;
920 type
|= CRYPTO_ALG_TYPE_HASH
;
921 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
923 return __crypto_hash_cast(crypto_alloc_base(alg_name
, type
, mask
));
926 static inline struct crypto_tfm
*crypto_hash_tfm(struct crypto_hash
*tfm
)
931 static inline void crypto_free_hash(struct crypto_hash
*tfm
)
933 crypto_free_tfm(crypto_hash_tfm(tfm
));
936 static inline int crypto_has_hash(const char *alg_name
, u32 type
, u32 mask
)
938 type
&= ~CRYPTO_ALG_TYPE_MASK
;
939 type
|= CRYPTO_ALG_TYPE_HASH
;
940 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
942 return crypto_has_alg(alg_name
, type
, mask
);
945 static inline struct hash_tfm
*crypto_hash_crt(struct crypto_hash
*tfm
)
947 return &crypto_hash_tfm(tfm
)->crt_hash
;
950 static inline unsigned int crypto_hash_blocksize(struct crypto_hash
*tfm
)
952 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm
));
955 static inline unsigned int crypto_hash_alignmask(struct crypto_hash
*tfm
)
957 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm
));
960 static inline unsigned int crypto_hash_digestsize(struct crypto_hash
*tfm
)
962 return crypto_hash_crt(tfm
)->digestsize
;
965 static inline u32
crypto_hash_get_flags(struct crypto_hash
*tfm
)
967 return crypto_tfm_get_flags(crypto_hash_tfm(tfm
));
970 static inline void crypto_hash_set_flags(struct crypto_hash
*tfm
, u32 flags
)
972 crypto_tfm_set_flags(crypto_hash_tfm(tfm
), flags
);
975 static inline void crypto_hash_clear_flags(struct crypto_hash
*tfm
, u32 flags
)
977 crypto_tfm_clear_flags(crypto_hash_tfm(tfm
), flags
);
980 static inline int crypto_hash_init(struct hash_desc
*desc
)
982 return crypto_hash_crt(desc
->tfm
)->init(desc
);
985 static inline int crypto_hash_update(struct hash_desc
*desc
,
986 struct scatterlist
*sg
,
989 return crypto_hash_crt(desc
->tfm
)->update(desc
, sg
, nbytes
);
992 static inline int crypto_hash_final(struct hash_desc
*desc
, u8
*out
)
994 return crypto_hash_crt(desc
->tfm
)->final(desc
, out
);
997 static inline int crypto_hash_digest(struct hash_desc
*desc
,
998 struct scatterlist
*sg
,
999 unsigned int nbytes
, u8
*out
)
1001 return crypto_hash_crt(desc
->tfm
)->digest(desc
, sg
, nbytes
, out
);
1004 static inline int crypto_hash_setkey(struct crypto_hash
*hash
,
1005 const u8
*key
, unsigned int keylen
)
1007 return crypto_hash_crt(hash
)->setkey(hash
, key
, keylen
);
1010 static inline struct crypto_comp
*__crypto_comp_cast(struct crypto_tfm
*tfm
)
1012 return (struct crypto_comp
*)tfm
;
1015 static inline struct crypto_comp
*crypto_comp_cast(struct crypto_tfm
*tfm
)
1017 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_COMPRESS
) &
1018 CRYPTO_ALG_TYPE_MASK
);
1019 return __crypto_comp_cast(tfm
);
1022 static inline struct crypto_comp
*crypto_alloc_comp(const char *alg_name
,
1025 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1026 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1027 mask
|= CRYPTO_ALG_TYPE_MASK
;
1029 return __crypto_comp_cast(crypto_alloc_base(alg_name
, type
, mask
));
1032 static inline struct crypto_tfm
*crypto_comp_tfm(struct crypto_comp
*tfm
)
1037 static inline void crypto_free_comp(struct crypto_comp
*tfm
)
1039 crypto_free_tfm(crypto_comp_tfm(tfm
));
1042 static inline int crypto_has_comp(const char *alg_name
, u32 type
, u32 mask
)
1044 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1045 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1046 mask
|= CRYPTO_ALG_TYPE_MASK
;
1048 return crypto_has_alg(alg_name
, type
, mask
);
1051 static inline const char *crypto_comp_name(struct crypto_comp
*tfm
)
1053 return crypto_tfm_alg_name(crypto_comp_tfm(tfm
));
1056 static inline struct compress_tfm
*crypto_comp_crt(struct crypto_comp
*tfm
)
1058 return &crypto_comp_tfm(tfm
)->crt_compress
;
1061 static inline int crypto_comp_compress(struct crypto_comp
*tfm
,
1062 const u8
*src
, unsigned int slen
,
1063 u8
*dst
, unsigned int *dlen
)
1065 return crypto_comp_crt(tfm
)->cot_compress(crypto_comp_tfm(tfm
),
1066 src
, slen
, dst
, dlen
);
1069 static inline int crypto_comp_decompress(struct crypto_comp
*tfm
,
1070 const u8
*src
, unsigned int slen
,
1071 u8
*dst
, unsigned int *dlen
)
1073 return crypto_comp_crt(tfm
)->cot_decompress(crypto_comp_tfm(tfm
),
1074 src
, slen
, dst
, dlen
);
1077 #endif /* _LINUX_CRYPTO_H */