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
);
299 unsigned int cit_ivsize
;
301 int (*cit_setkey
)(struct crypto_tfm
*tfm
,
302 const u8
*key
, unsigned int keylen
);
303 int (*cit_encrypt
)(struct crypto_tfm
*tfm
,
304 struct scatterlist
*dst
,
305 struct scatterlist
*src
,
306 unsigned int nbytes
);
307 int (*cit_encrypt_iv
)(struct crypto_tfm
*tfm
,
308 struct scatterlist
*dst
,
309 struct scatterlist
*src
,
310 unsigned int nbytes
, u8
*iv
);
311 int (*cit_decrypt
)(struct crypto_tfm
*tfm
,
312 struct scatterlist
*dst
,
313 struct scatterlist
*src
,
314 unsigned int nbytes
);
315 int (*cit_decrypt_iv
)(struct crypto_tfm
*tfm
,
316 struct scatterlist
*dst
,
317 struct scatterlist
*src
,
318 unsigned int nbytes
, u8
*iv
);
319 void (*cit_xor_block
)(u8
*dst
, const u8
*src
);
320 void (*cit_encrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
321 void (*cit_decrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
325 int (*init
)(struct hash_desc
*desc
);
326 int (*update
)(struct hash_desc
*desc
,
327 struct scatterlist
*sg
, unsigned int nsg
);
328 int (*final
)(struct hash_desc
*desc
, u8
*out
);
329 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
330 unsigned int nsg
, u8
*out
);
331 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
332 unsigned int keylen
);
333 unsigned int digestsize
;
336 struct compress_tfm
{
337 int (*cot_compress
)(struct crypto_tfm
*tfm
,
338 const u8
*src
, unsigned int slen
,
339 u8
*dst
, unsigned int *dlen
);
340 int (*cot_decompress
)(struct crypto_tfm
*tfm
,
341 const u8
*src
, unsigned int slen
,
342 u8
*dst
, unsigned int *dlen
);
345 #define crt_ablkcipher crt_u.ablkcipher
346 #define crt_blkcipher crt_u.blkcipher
347 #define crt_cipher crt_u.cipher
348 #define crt_hash crt_u.hash
349 #define crt_compress crt_u.compress
356 struct ablkcipher_tfm ablkcipher
;
357 struct blkcipher_tfm blkcipher
;
358 struct cipher_tfm cipher
;
359 struct hash_tfm hash
;
360 struct compress_tfm compress
;
363 struct crypto_alg
*__crt_alg
;
365 void *__crt_ctx
[] CRYPTO_MINALIGN_ATTR
;
368 struct crypto_ablkcipher
{
369 struct crypto_tfm base
;
372 struct crypto_blkcipher
{
373 struct crypto_tfm base
;
376 struct crypto_cipher
{
377 struct crypto_tfm base
;
381 struct crypto_tfm base
;
385 struct crypto_tfm base
;
395 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
397 struct crypto_attr_alg
{
398 char name
[CRYPTO_MAX_ALG_NAME
];
401 struct crypto_attr_type
{
407 * Transform user interface.
410 struct crypto_tfm
*crypto_alloc_tfm(const char *alg_name
, u32 tfm_flags
);
411 struct crypto_tfm
*crypto_alloc_base(const char *alg_name
, u32 type
, u32 mask
);
412 void crypto_free_tfm(struct crypto_tfm
*tfm
);
415 * Transform helpers which query the underlying algorithm.
417 static inline const char *crypto_tfm_alg_name(struct crypto_tfm
*tfm
)
419 return tfm
->__crt_alg
->cra_name
;
422 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm
*tfm
)
424 return tfm
->__crt_alg
->cra_driver_name
;
427 static inline int crypto_tfm_alg_priority(struct crypto_tfm
*tfm
)
429 return tfm
->__crt_alg
->cra_priority
;
432 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm
*tfm
)
434 return module_name(tfm
->__crt_alg
->cra_module
);
437 static inline u32
crypto_tfm_alg_type(struct crypto_tfm
*tfm
)
439 return tfm
->__crt_alg
->cra_flags
& CRYPTO_ALG_TYPE_MASK
;
442 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm
*tfm
)
444 return tfm
->__crt_alg
->cra_blocksize
;
447 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm
*tfm
)
449 return tfm
->__crt_alg
->cra_alignmask
;
452 static inline u32
crypto_tfm_get_flags(struct crypto_tfm
*tfm
)
454 return tfm
->crt_flags
;
457 static inline void crypto_tfm_set_flags(struct crypto_tfm
*tfm
, u32 flags
)
459 tfm
->crt_flags
|= flags
;
462 static inline void crypto_tfm_clear_flags(struct crypto_tfm
*tfm
, u32 flags
)
464 tfm
->crt_flags
&= ~flags
;
467 static inline void *crypto_tfm_ctx(struct crypto_tfm
*tfm
)
469 return tfm
->__crt_ctx
;
472 static inline unsigned int crypto_tfm_ctx_alignment(void)
474 struct crypto_tfm
*tfm
;
475 return __alignof__(tfm
->__crt_ctx
);
481 static inline struct crypto_ablkcipher
*__crypto_ablkcipher_cast(
482 struct crypto_tfm
*tfm
)
484 return (struct crypto_ablkcipher
*)tfm
;
487 static inline struct crypto_ablkcipher
*crypto_alloc_ablkcipher(
488 const char *alg_name
, u32 type
, u32 mask
)
490 type
&= ~CRYPTO_ALG_TYPE_MASK
;
491 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
492 mask
|= CRYPTO_ALG_TYPE_MASK
;
494 return __crypto_ablkcipher_cast(
495 crypto_alloc_base(alg_name
, type
, mask
));
498 static inline struct crypto_tfm
*crypto_ablkcipher_tfm(
499 struct crypto_ablkcipher
*tfm
)
504 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher
*tfm
)
506 crypto_free_tfm(crypto_ablkcipher_tfm(tfm
));
509 static inline int crypto_has_ablkcipher(const char *alg_name
, u32 type
,
512 type
&= ~CRYPTO_ALG_TYPE_MASK
;
513 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
514 mask
|= CRYPTO_ALG_TYPE_MASK
;
516 return crypto_has_alg(alg_name
, type
, mask
);
519 static inline struct ablkcipher_tfm
*crypto_ablkcipher_crt(
520 struct crypto_ablkcipher
*tfm
)
522 return &crypto_ablkcipher_tfm(tfm
)->crt_ablkcipher
;
525 static inline unsigned int crypto_ablkcipher_ivsize(
526 struct crypto_ablkcipher
*tfm
)
528 return crypto_ablkcipher_crt(tfm
)->ivsize
;
531 static inline unsigned int crypto_ablkcipher_blocksize(
532 struct crypto_ablkcipher
*tfm
)
534 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm
));
537 static inline unsigned int crypto_ablkcipher_alignmask(
538 struct crypto_ablkcipher
*tfm
)
540 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm
));
543 static inline u32
crypto_ablkcipher_get_flags(struct crypto_ablkcipher
*tfm
)
545 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm
));
548 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher
*tfm
,
551 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm
), flags
);
554 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher
*tfm
,
557 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm
), flags
);
560 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher
*tfm
,
561 const u8
*key
, unsigned int keylen
)
563 return crypto_ablkcipher_crt(tfm
)->setkey(tfm
, key
, keylen
);
566 static inline struct crypto_ablkcipher
*crypto_ablkcipher_reqtfm(
567 struct ablkcipher_request
*req
)
569 return __crypto_ablkcipher_cast(req
->base
.tfm
);
572 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request
*req
)
574 struct ablkcipher_tfm
*crt
=
575 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
576 return crt
->encrypt(req
);
579 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request
*req
)
581 struct ablkcipher_tfm
*crt
=
582 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
583 return crt
->decrypt(req
);
586 static inline int crypto_ablkcipher_reqsize(struct crypto_ablkcipher
*tfm
)
588 return crypto_ablkcipher_crt(tfm
)->reqsize
;
591 static inline void ablkcipher_request_set_tfm(
592 struct ablkcipher_request
*req
, struct crypto_ablkcipher
*tfm
)
594 req
->base
.tfm
= crypto_ablkcipher_tfm(tfm
);
597 static inline struct ablkcipher_request
*ablkcipher_request_cast(
598 struct crypto_async_request
*req
)
600 return container_of(req
, struct ablkcipher_request
, base
);
603 static inline struct ablkcipher_request
*ablkcipher_request_alloc(
604 struct crypto_ablkcipher
*tfm
, gfp_t gfp
)
606 struct ablkcipher_request
*req
;
608 req
= kmalloc(sizeof(struct ablkcipher_request
) +
609 crypto_ablkcipher_reqsize(tfm
), gfp
);
612 ablkcipher_request_set_tfm(req
, tfm
);
617 static inline void ablkcipher_request_free(struct ablkcipher_request
*req
)
622 static inline void ablkcipher_request_set_callback(
623 struct ablkcipher_request
*req
,
624 u32 flags
, crypto_completion_t complete
, void *data
)
626 req
->base
.complete
= complete
;
627 req
->base
.data
= data
;
628 req
->base
.flags
= flags
;
631 static inline void ablkcipher_request_set_crypt(
632 struct ablkcipher_request
*req
,
633 struct scatterlist
*src
, struct scatterlist
*dst
,
634 unsigned int nbytes
, void *iv
)
638 req
->nbytes
= nbytes
;
642 static inline struct crypto_blkcipher
*__crypto_blkcipher_cast(
643 struct crypto_tfm
*tfm
)
645 return (struct crypto_blkcipher
*)tfm
;
648 static inline struct crypto_blkcipher
*crypto_blkcipher_cast(
649 struct crypto_tfm
*tfm
)
651 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_BLKCIPHER
);
652 return __crypto_blkcipher_cast(tfm
);
655 static inline struct crypto_blkcipher
*crypto_alloc_blkcipher(
656 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_blkcipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
665 static inline struct crypto_tfm
*crypto_blkcipher_tfm(
666 struct crypto_blkcipher
*tfm
)
671 static inline void crypto_free_blkcipher(struct crypto_blkcipher
*tfm
)
673 crypto_free_tfm(crypto_blkcipher_tfm(tfm
));
676 static inline int crypto_has_blkcipher(const char *alg_name
, u32 type
, u32 mask
)
678 type
&= ~(CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
);
679 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
680 mask
|= CRYPTO_ALG_TYPE_MASK
| CRYPTO_ALG_ASYNC
;
682 return crypto_has_alg(alg_name
, type
, mask
);
685 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher
*tfm
)
687 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm
));
690 static inline struct blkcipher_tfm
*crypto_blkcipher_crt(
691 struct crypto_blkcipher
*tfm
)
693 return &crypto_blkcipher_tfm(tfm
)->crt_blkcipher
;
696 static inline struct blkcipher_alg
*crypto_blkcipher_alg(
697 struct crypto_blkcipher
*tfm
)
699 return &crypto_blkcipher_tfm(tfm
)->__crt_alg
->cra_blkcipher
;
702 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher
*tfm
)
704 return crypto_blkcipher_alg(tfm
)->ivsize
;
707 static inline unsigned int crypto_blkcipher_blocksize(
708 struct crypto_blkcipher
*tfm
)
710 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm
));
713 static inline unsigned int crypto_blkcipher_alignmask(
714 struct crypto_blkcipher
*tfm
)
716 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm
));
719 static inline u32
crypto_blkcipher_get_flags(struct crypto_blkcipher
*tfm
)
721 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm
));
724 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher
*tfm
,
727 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm
), flags
);
730 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher
*tfm
,
733 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm
), flags
);
736 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher
*tfm
,
737 const u8
*key
, unsigned int keylen
)
739 return crypto_blkcipher_crt(tfm
)->setkey(crypto_blkcipher_tfm(tfm
),
743 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc
*desc
,
744 struct scatterlist
*dst
,
745 struct scatterlist
*src
,
748 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
749 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
752 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc
*desc
,
753 struct scatterlist
*dst
,
754 struct scatterlist
*src
,
757 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
760 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc
*desc
,
761 struct scatterlist
*dst
,
762 struct scatterlist
*src
,
765 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
766 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
769 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc
*desc
,
770 struct scatterlist
*dst
,
771 struct scatterlist
*src
,
774 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
777 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher
*tfm
,
778 const u8
*src
, unsigned int len
)
780 memcpy(crypto_blkcipher_crt(tfm
)->iv
, src
, len
);
783 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher
*tfm
,
784 u8
*dst
, unsigned int len
)
786 memcpy(dst
, crypto_blkcipher_crt(tfm
)->iv
, len
);
789 static inline struct crypto_cipher
*__crypto_cipher_cast(struct crypto_tfm
*tfm
)
791 return (struct crypto_cipher
*)tfm
;
794 static inline struct crypto_cipher
*crypto_cipher_cast(struct crypto_tfm
*tfm
)
796 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
797 return __crypto_cipher_cast(tfm
);
800 static inline struct crypto_cipher
*crypto_alloc_cipher(const char *alg_name
,
803 type
&= ~CRYPTO_ALG_TYPE_MASK
;
804 type
|= CRYPTO_ALG_TYPE_CIPHER
;
805 mask
|= CRYPTO_ALG_TYPE_MASK
;
807 return __crypto_cipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
810 static inline struct crypto_tfm
*crypto_cipher_tfm(struct crypto_cipher
*tfm
)
815 static inline void crypto_free_cipher(struct crypto_cipher
*tfm
)
817 crypto_free_tfm(crypto_cipher_tfm(tfm
));
820 static inline int crypto_has_cipher(const char *alg_name
, u32 type
, u32 mask
)
822 type
&= ~CRYPTO_ALG_TYPE_MASK
;
823 type
|= CRYPTO_ALG_TYPE_CIPHER
;
824 mask
|= CRYPTO_ALG_TYPE_MASK
;
826 return crypto_has_alg(alg_name
, type
, mask
);
829 static inline struct cipher_tfm
*crypto_cipher_crt(struct crypto_cipher
*tfm
)
831 return &crypto_cipher_tfm(tfm
)->crt_cipher
;
834 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher
*tfm
)
836 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm
));
839 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher
*tfm
)
841 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm
));
844 static inline u32
crypto_cipher_get_flags(struct crypto_cipher
*tfm
)
846 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm
));
849 static inline void crypto_cipher_set_flags(struct crypto_cipher
*tfm
,
852 crypto_tfm_set_flags(crypto_cipher_tfm(tfm
), flags
);
855 static inline void crypto_cipher_clear_flags(struct crypto_cipher
*tfm
,
858 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm
), flags
);
861 static inline int crypto_cipher_setkey(struct crypto_cipher
*tfm
,
862 const u8
*key
, unsigned int keylen
)
864 return crypto_cipher_crt(tfm
)->cit_setkey(crypto_cipher_tfm(tfm
),
868 static inline void crypto_cipher_encrypt_one(struct crypto_cipher
*tfm
,
869 u8
*dst
, const u8
*src
)
871 crypto_cipher_crt(tfm
)->cit_encrypt_one(crypto_cipher_tfm(tfm
),
875 static inline void crypto_cipher_decrypt_one(struct crypto_cipher
*tfm
,
876 u8
*dst
, const u8
*src
)
878 crypto_cipher_crt(tfm
)->cit_decrypt_one(crypto_cipher_tfm(tfm
),
882 static inline struct crypto_hash
*__crypto_hash_cast(struct crypto_tfm
*tfm
)
884 return (struct crypto_hash
*)tfm
;
887 static inline struct crypto_hash
*crypto_hash_cast(struct crypto_tfm
*tfm
)
889 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_HASH
) &
890 CRYPTO_ALG_TYPE_HASH_MASK
);
891 return __crypto_hash_cast(tfm
);
894 static inline struct crypto_hash
*crypto_alloc_hash(const char *alg_name
,
897 type
&= ~CRYPTO_ALG_TYPE_MASK
;
898 type
|= CRYPTO_ALG_TYPE_HASH
;
899 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
901 return __crypto_hash_cast(crypto_alloc_base(alg_name
, type
, mask
));
904 static inline struct crypto_tfm
*crypto_hash_tfm(struct crypto_hash
*tfm
)
909 static inline void crypto_free_hash(struct crypto_hash
*tfm
)
911 crypto_free_tfm(crypto_hash_tfm(tfm
));
914 static inline int crypto_has_hash(const char *alg_name
, u32 type
, u32 mask
)
916 type
&= ~CRYPTO_ALG_TYPE_MASK
;
917 type
|= CRYPTO_ALG_TYPE_HASH
;
918 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
920 return crypto_has_alg(alg_name
, type
, mask
);
923 static inline struct hash_tfm
*crypto_hash_crt(struct crypto_hash
*tfm
)
925 return &crypto_hash_tfm(tfm
)->crt_hash
;
928 static inline unsigned int crypto_hash_blocksize(struct crypto_hash
*tfm
)
930 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm
));
933 static inline unsigned int crypto_hash_alignmask(struct crypto_hash
*tfm
)
935 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm
));
938 static inline unsigned int crypto_hash_digestsize(struct crypto_hash
*tfm
)
940 return crypto_hash_crt(tfm
)->digestsize
;
943 static inline u32
crypto_hash_get_flags(struct crypto_hash
*tfm
)
945 return crypto_tfm_get_flags(crypto_hash_tfm(tfm
));
948 static inline void crypto_hash_set_flags(struct crypto_hash
*tfm
, u32 flags
)
950 crypto_tfm_set_flags(crypto_hash_tfm(tfm
), flags
);
953 static inline void crypto_hash_clear_flags(struct crypto_hash
*tfm
, u32 flags
)
955 crypto_tfm_clear_flags(crypto_hash_tfm(tfm
), flags
);
958 static inline int crypto_hash_init(struct hash_desc
*desc
)
960 return crypto_hash_crt(desc
->tfm
)->init(desc
);
963 static inline int crypto_hash_update(struct hash_desc
*desc
,
964 struct scatterlist
*sg
,
967 return crypto_hash_crt(desc
->tfm
)->update(desc
, sg
, nbytes
);
970 static inline int crypto_hash_final(struct hash_desc
*desc
, u8
*out
)
972 return crypto_hash_crt(desc
->tfm
)->final(desc
, out
);
975 static inline int crypto_hash_digest(struct hash_desc
*desc
,
976 struct scatterlist
*sg
,
977 unsigned int nbytes
, u8
*out
)
979 return crypto_hash_crt(desc
->tfm
)->digest(desc
, sg
, nbytes
, out
);
982 static inline int crypto_hash_setkey(struct crypto_hash
*hash
,
983 const u8
*key
, unsigned int keylen
)
985 return crypto_hash_crt(hash
)->setkey(hash
, key
, keylen
);
988 static inline struct crypto_comp
*__crypto_comp_cast(struct crypto_tfm
*tfm
)
990 return (struct crypto_comp
*)tfm
;
993 static inline struct crypto_comp
*crypto_comp_cast(struct crypto_tfm
*tfm
)
995 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_COMPRESS
) &
996 CRYPTO_ALG_TYPE_MASK
);
997 return __crypto_comp_cast(tfm
);
1000 static inline struct crypto_comp
*crypto_alloc_comp(const char *alg_name
,
1003 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1004 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1005 mask
|= CRYPTO_ALG_TYPE_MASK
;
1007 return __crypto_comp_cast(crypto_alloc_base(alg_name
, type
, mask
));
1010 static inline struct crypto_tfm
*crypto_comp_tfm(struct crypto_comp
*tfm
)
1015 static inline void crypto_free_comp(struct crypto_comp
*tfm
)
1017 crypto_free_tfm(crypto_comp_tfm(tfm
));
1020 static inline int crypto_has_comp(const char *alg_name
, u32 type
, u32 mask
)
1022 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1023 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1024 mask
|= CRYPTO_ALG_TYPE_MASK
;
1026 return crypto_has_alg(alg_name
, type
, mask
);
1029 static inline const char *crypto_comp_name(struct crypto_comp
*tfm
)
1031 return crypto_tfm_alg_name(crypto_comp_tfm(tfm
));
1034 static inline struct compress_tfm
*crypto_comp_crt(struct crypto_comp
*tfm
)
1036 return &crypto_comp_tfm(tfm
)->crt_compress
;
1039 static inline int crypto_comp_compress(struct crypto_comp
*tfm
,
1040 const u8
*src
, unsigned int slen
,
1041 u8
*dst
, unsigned int *dlen
)
1043 return crypto_comp_crt(tfm
)->cot_compress(crypto_comp_tfm(tfm
),
1044 src
, slen
, dst
, dlen
);
1047 static inline int crypto_comp_decompress(struct crypto_comp
*tfm
,
1048 const u8
*src
, unsigned int slen
,
1049 u8
*dst
, unsigned int *dlen
)
1051 return crypto_comp_crt(tfm
)->cot_decompress(crypto_comp_tfm(tfm
),
1052 src
, slen
, dst
, dlen
);
1055 #endif /* _LINUX_CRYPTO_H */