2 * Scatterlist Cryptographic API.
4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
9 * and Nettle, by Niels Möller.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
17 #ifndef _LINUX_CRYPTO_H
18 #define _LINUX_CRYPTO_H
20 #include <asm/atomic.h>
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/slab.h>
25 #include <linux/string.h>
26 #include <linux/uaccess.h>
29 * Algorithm masks and types.
31 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
32 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
33 #define CRYPTO_ALG_TYPE_DIGEST 0x00000002
34 #define CRYPTO_ALG_TYPE_HASH 0x00000003
35 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
36 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
37 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
38 #define CRYPTO_ALG_TYPE_AEAD 0x00000009
40 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
41 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
43 #define CRYPTO_ALG_LARVAL 0x00000010
44 #define CRYPTO_ALG_DEAD 0x00000020
45 #define CRYPTO_ALG_DYING 0x00000040
46 #define CRYPTO_ALG_ASYNC 0x00000080
49 * Set this bit if and only if the algorithm requires another algorithm of
50 * the same type to handle corner cases.
52 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
55 * Transform masks and values (for crt_flags).
57 #define CRYPTO_TFM_REQ_MASK 0x000fff00
58 #define CRYPTO_TFM_RES_MASK 0xfff00000
60 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
61 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
62 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
63 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
64 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
65 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
66 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
67 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
70 * Miscellaneous stuff.
72 #define CRYPTO_MAX_ALG_NAME 64
75 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
76 * declaration) is used to ensure that the crypto_tfm context structure is
77 * aligned correctly for the given architecture so that there are no alignment
78 * faults for C data types. In particular, this is required on platforms such
79 * as arm where pointers are 32-bit aligned but there are data types such as
80 * u64 which require 64-bit alignment.
82 #if defined(ARCH_KMALLOC_MINALIGN)
83 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
84 #elif defined(ARCH_SLAB_MINALIGN)
85 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
88 #ifdef CRYPTO_MINALIGN
89 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
91 #define CRYPTO_MINALIGN_ATTR
95 struct crypto_ablkcipher
;
96 struct crypto_async_request
;
98 struct crypto_blkcipher
;
103 typedef void (*crypto_completion_t
)(struct crypto_async_request
*req
, int err
);
105 struct crypto_async_request
{
106 struct list_head list
;
107 crypto_completion_t complete
;
109 struct crypto_tfm
*tfm
;
114 struct ablkcipher_request
{
115 struct crypto_async_request base
;
121 struct scatterlist
*src
;
122 struct scatterlist
*dst
;
124 void *__ctx
[] CRYPTO_MINALIGN_ATTR
;
128 * struct aead_request - AEAD request
129 * @base: Common attributes for async crypto requests
130 * @assoclen: Length in bytes of associated data for authentication
131 * @cryptlen: Length of data to be encrypted or decrypted
132 * @iv: Initialisation vector
133 * @assoc: Associated data
135 * @dst: Destination data
136 * @__ctx: Start of private context data
138 struct aead_request
{
139 struct crypto_async_request base
;
141 unsigned int assoclen
;
142 unsigned int cryptlen
;
146 struct scatterlist
*assoc
;
147 struct scatterlist
*src
;
148 struct scatterlist
*dst
;
150 void *__ctx
[] CRYPTO_MINALIGN_ATTR
;
153 struct blkcipher_desc
{
154 struct crypto_blkcipher
*tfm
;
160 struct crypto_tfm
*tfm
;
161 void (*crfn
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
162 unsigned int (*prfn
)(const struct cipher_desc
*desc
, u8
*dst
,
163 const u8
*src
, unsigned int nbytes
);
168 struct crypto_hash
*tfm
;
173 * Algorithms: modular crypto algorithm implementations, managed
174 * via crypto_register_alg() and crypto_unregister_alg().
176 struct ablkcipher_alg
{
177 int (*setkey
)(struct crypto_ablkcipher
*tfm
, const u8
*key
,
178 unsigned int keylen
);
179 int (*encrypt
)(struct ablkcipher_request
*req
);
180 int (*decrypt
)(struct ablkcipher_request
*req
);
182 unsigned int min_keysize
;
183 unsigned int max_keysize
;
188 int (*setkey
)(struct crypto_aead
*tfm
, const u8
*key
,
189 unsigned int keylen
);
190 int (*setauthsize
)(struct crypto_aead
*tfm
, unsigned int authsize
);
191 int (*encrypt
)(struct aead_request
*req
);
192 int (*decrypt
)(struct aead_request
*req
);
195 unsigned int maxauthsize
;
198 struct blkcipher_alg
{
199 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
200 unsigned int keylen
);
201 int (*encrypt
)(struct blkcipher_desc
*desc
,
202 struct scatterlist
*dst
, struct scatterlist
*src
,
203 unsigned int nbytes
);
204 int (*decrypt
)(struct blkcipher_desc
*desc
,
205 struct scatterlist
*dst
, struct scatterlist
*src
,
206 unsigned int nbytes
);
208 unsigned int min_keysize
;
209 unsigned int max_keysize
;
214 unsigned int cia_min_keysize
;
215 unsigned int cia_max_keysize
;
216 int (*cia_setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
217 unsigned int keylen
);
218 void (*cia_encrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
219 void (*cia_decrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
223 unsigned int dia_digestsize
;
224 void (*dia_init
)(struct crypto_tfm
*tfm
);
225 void (*dia_update
)(struct crypto_tfm
*tfm
, const u8
*data
,
227 void (*dia_final
)(struct crypto_tfm
*tfm
, u8
*out
);
228 int (*dia_setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
229 unsigned int keylen
);
233 int (*init
)(struct hash_desc
*desc
);
234 int (*update
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
235 unsigned int nbytes
);
236 int (*final
)(struct hash_desc
*desc
, u8
*out
);
237 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
238 unsigned int nbytes
, u8
*out
);
239 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
240 unsigned int keylen
);
242 unsigned int digestsize
;
245 struct compress_alg
{
246 int (*coa_compress
)(struct crypto_tfm
*tfm
, const u8
*src
,
247 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
248 int (*coa_decompress
)(struct crypto_tfm
*tfm
, const u8
*src
,
249 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
252 #define cra_ablkcipher cra_u.ablkcipher
253 #define cra_aead cra_u.aead
254 #define cra_blkcipher cra_u.blkcipher
255 #define cra_cipher cra_u.cipher
256 #define cra_digest cra_u.digest
257 #define cra_hash cra_u.hash
258 #define cra_compress cra_u.compress
261 struct list_head cra_list
;
262 struct list_head cra_users
;
265 unsigned int cra_blocksize
;
266 unsigned int cra_ctxsize
;
267 unsigned int cra_alignmask
;
272 char cra_name
[CRYPTO_MAX_ALG_NAME
];
273 char cra_driver_name
[CRYPTO_MAX_ALG_NAME
];
275 const struct crypto_type
*cra_type
;
278 struct ablkcipher_alg ablkcipher
;
279 struct aead_alg aead
;
280 struct blkcipher_alg blkcipher
;
281 struct cipher_alg cipher
;
282 struct digest_alg digest
;
283 struct hash_alg hash
;
284 struct compress_alg compress
;
287 int (*cra_init
)(struct crypto_tfm
*tfm
);
288 void (*cra_exit
)(struct crypto_tfm
*tfm
);
289 void (*cra_destroy
)(struct crypto_alg
*alg
);
291 struct module
*cra_module
;
295 * Algorithm registration interface.
297 int crypto_register_alg(struct crypto_alg
*alg
);
298 int crypto_unregister_alg(struct crypto_alg
*alg
);
301 * Algorithm query interface.
304 int crypto_has_alg(const char *name
, u32 type
, u32 mask
);
306 static inline int crypto_has_alg(const char *name
, u32 type
, u32 mask
)
313 * Transforms: user-instantiated objects which encapsulate algorithms
314 * and core processing logic. Managed via crypto_alloc_*() and
315 * crypto_free_*(), as well as the various helpers below.
318 struct ablkcipher_tfm
{
319 int (*setkey
)(struct crypto_ablkcipher
*tfm
, const u8
*key
,
320 unsigned int keylen
);
321 int (*encrypt
)(struct ablkcipher_request
*req
);
322 int (*decrypt
)(struct ablkcipher_request
*req
);
324 unsigned int reqsize
;
328 int (*setkey
)(struct crypto_aead
*tfm
, const u8
*key
,
329 unsigned int keylen
);
330 int (*encrypt
)(struct aead_request
*req
);
331 int (*decrypt
)(struct aead_request
*req
);
333 unsigned int authsize
;
334 unsigned int reqsize
;
337 struct blkcipher_tfm
{
339 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
340 unsigned int keylen
);
341 int (*encrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
342 struct scatterlist
*src
, unsigned int nbytes
);
343 int (*decrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
344 struct scatterlist
*src
, unsigned int nbytes
);
348 int (*cit_setkey
)(struct crypto_tfm
*tfm
,
349 const u8
*key
, unsigned int keylen
);
350 void (*cit_encrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
351 void (*cit_decrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
355 int (*init
)(struct hash_desc
*desc
);
356 int (*update
)(struct hash_desc
*desc
,
357 struct scatterlist
*sg
, unsigned int nsg
);
358 int (*final
)(struct hash_desc
*desc
, u8
*out
);
359 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
360 unsigned int nsg
, u8
*out
);
361 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
362 unsigned int keylen
);
363 unsigned int digestsize
;
366 struct compress_tfm
{
367 int (*cot_compress
)(struct crypto_tfm
*tfm
,
368 const u8
*src
, unsigned int slen
,
369 u8
*dst
, unsigned int *dlen
);
370 int (*cot_decompress
)(struct crypto_tfm
*tfm
,
371 const u8
*src
, unsigned int slen
,
372 u8
*dst
, unsigned int *dlen
);
375 #define crt_ablkcipher crt_u.ablkcipher
376 #define crt_aead crt_u.aead
377 #define crt_blkcipher crt_u.blkcipher
378 #define crt_cipher crt_u.cipher
379 #define crt_hash crt_u.hash
380 #define crt_compress crt_u.compress
387 struct ablkcipher_tfm ablkcipher
;
388 struct aead_tfm aead
;
389 struct blkcipher_tfm blkcipher
;
390 struct cipher_tfm cipher
;
391 struct hash_tfm hash
;
392 struct compress_tfm compress
;
395 struct crypto_alg
*__crt_alg
;
397 void *__crt_ctx
[] CRYPTO_MINALIGN_ATTR
;
400 struct crypto_ablkcipher
{
401 struct crypto_tfm base
;
405 struct crypto_tfm base
;
408 struct crypto_blkcipher
{
409 struct crypto_tfm base
;
412 struct crypto_cipher
{
413 struct crypto_tfm base
;
417 struct crypto_tfm base
;
421 struct crypto_tfm base
;
432 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
434 /* Maximum number of (rtattr) parameters for each template. */
435 #define CRYPTO_MAX_ATTRS 32
437 struct crypto_attr_alg
{
438 char name
[CRYPTO_MAX_ALG_NAME
];
441 struct crypto_attr_type
{
446 struct crypto_attr_u32
{
451 * Transform user interface.
454 struct crypto_tfm
*crypto_alloc_tfm(const char *alg_name
, u32 tfm_flags
);
455 struct crypto_tfm
*crypto_alloc_base(const char *alg_name
, u32 type
, u32 mask
);
456 void crypto_free_tfm(struct crypto_tfm
*tfm
);
459 * Transform helpers which query the underlying algorithm.
461 static inline const char *crypto_tfm_alg_name(struct crypto_tfm
*tfm
)
463 return tfm
->__crt_alg
->cra_name
;
466 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm
*tfm
)
468 return tfm
->__crt_alg
->cra_driver_name
;
471 static inline int crypto_tfm_alg_priority(struct crypto_tfm
*tfm
)
473 return tfm
->__crt_alg
->cra_priority
;
476 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm
*tfm
)
478 return module_name(tfm
->__crt_alg
->cra_module
);
481 static inline u32
crypto_tfm_alg_type(struct crypto_tfm
*tfm
)
483 return tfm
->__crt_alg
->cra_flags
& CRYPTO_ALG_TYPE_MASK
;
486 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm
*tfm
)
488 return tfm
->__crt_alg
->cra_blocksize
;
491 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm
*tfm
)
493 return tfm
->__crt_alg
->cra_alignmask
;
496 static inline u32
crypto_tfm_get_flags(struct crypto_tfm
*tfm
)
498 return tfm
->crt_flags
;
501 static inline void crypto_tfm_set_flags(struct crypto_tfm
*tfm
, u32 flags
)
503 tfm
->crt_flags
|= flags
;
506 static inline void crypto_tfm_clear_flags(struct crypto_tfm
*tfm
, u32 flags
)
508 tfm
->crt_flags
&= ~flags
;
511 static inline void *crypto_tfm_ctx(struct crypto_tfm
*tfm
)
513 return tfm
->__crt_ctx
;
516 static inline unsigned int crypto_tfm_ctx_alignment(void)
518 struct crypto_tfm
*tfm
;
519 return __alignof__(tfm
->__crt_ctx
);
525 static inline struct crypto_ablkcipher
*__crypto_ablkcipher_cast(
526 struct crypto_tfm
*tfm
)
528 return (struct crypto_ablkcipher
*)tfm
;
531 static inline struct crypto_ablkcipher
*crypto_alloc_ablkcipher(
532 const char *alg_name
, u32 type
, u32 mask
)
534 type
&= ~CRYPTO_ALG_TYPE_MASK
;
535 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
536 mask
|= CRYPTO_ALG_TYPE_BLKCIPHER_MASK
;
538 return __crypto_ablkcipher_cast(
539 crypto_alloc_base(alg_name
, type
, mask
));
542 static inline struct crypto_tfm
*crypto_ablkcipher_tfm(
543 struct crypto_ablkcipher
*tfm
)
548 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher
*tfm
)
550 crypto_free_tfm(crypto_ablkcipher_tfm(tfm
));
553 static inline int crypto_has_ablkcipher(const char *alg_name
, u32 type
,
556 type
&= ~CRYPTO_ALG_TYPE_MASK
;
557 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
558 mask
|= CRYPTO_ALG_TYPE_BLKCIPHER_MASK
;
560 return crypto_has_alg(alg_name
, type
, mask
);
563 static inline struct ablkcipher_tfm
*crypto_ablkcipher_crt(
564 struct crypto_ablkcipher
*tfm
)
566 return &crypto_ablkcipher_tfm(tfm
)->crt_ablkcipher
;
569 static inline unsigned int crypto_ablkcipher_ivsize(
570 struct crypto_ablkcipher
*tfm
)
572 return crypto_ablkcipher_crt(tfm
)->ivsize
;
575 static inline unsigned int crypto_ablkcipher_blocksize(
576 struct crypto_ablkcipher
*tfm
)
578 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm
));
581 static inline unsigned int crypto_ablkcipher_alignmask(
582 struct crypto_ablkcipher
*tfm
)
584 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm
));
587 static inline u32
crypto_ablkcipher_get_flags(struct crypto_ablkcipher
*tfm
)
589 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm
));
592 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher
*tfm
,
595 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm
), flags
);
598 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher
*tfm
,
601 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm
), flags
);
604 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher
*tfm
,
605 const u8
*key
, unsigned int keylen
)
607 return crypto_ablkcipher_crt(tfm
)->setkey(tfm
, key
, keylen
);
610 static inline struct crypto_ablkcipher
*crypto_ablkcipher_reqtfm(
611 struct ablkcipher_request
*req
)
613 return __crypto_ablkcipher_cast(req
->base
.tfm
);
616 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request
*req
)
618 struct ablkcipher_tfm
*crt
=
619 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
620 return crt
->encrypt(req
);
623 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request
*req
)
625 struct ablkcipher_tfm
*crt
=
626 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req
));
627 return crt
->decrypt(req
);
630 static inline unsigned int crypto_ablkcipher_reqsize(
631 struct crypto_ablkcipher
*tfm
)
633 return crypto_ablkcipher_crt(tfm
)->reqsize
;
636 static inline void ablkcipher_request_set_tfm(
637 struct ablkcipher_request
*req
, struct crypto_ablkcipher
*tfm
)
639 req
->base
.tfm
= crypto_ablkcipher_tfm(tfm
);
642 static inline struct ablkcipher_request
*ablkcipher_request_cast(
643 struct crypto_async_request
*req
)
645 return container_of(req
, struct ablkcipher_request
, base
);
648 static inline struct ablkcipher_request
*ablkcipher_request_alloc(
649 struct crypto_ablkcipher
*tfm
, gfp_t gfp
)
651 struct ablkcipher_request
*req
;
653 req
= kmalloc(sizeof(struct ablkcipher_request
) +
654 crypto_ablkcipher_reqsize(tfm
), gfp
);
657 ablkcipher_request_set_tfm(req
, tfm
);
662 static inline void ablkcipher_request_free(struct ablkcipher_request
*req
)
667 static inline void ablkcipher_request_set_callback(
668 struct ablkcipher_request
*req
,
669 u32 flags
, crypto_completion_t complete
, void *data
)
671 req
->base
.complete
= complete
;
672 req
->base
.data
= data
;
673 req
->base
.flags
= flags
;
676 static inline void ablkcipher_request_set_crypt(
677 struct ablkcipher_request
*req
,
678 struct scatterlist
*src
, struct scatterlist
*dst
,
679 unsigned int nbytes
, void *iv
)
683 req
->nbytes
= nbytes
;
687 static inline struct crypto_aead
*__crypto_aead_cast(struct crypto_tfm
*tfm
)
689 return (struct crypto_aead
*)tfm
;
692 static inline struct crypto_aead
*crypto_alloc_aead(const char *alg_name
,
695 type
&= ~CRYPTO_ALG_TYPE_MASK
;
696 type
|= CRYPTO_ALG_TYPE_AEAD
;
697 mask
|= CRYPTO_ALG_TYPE_MASK
;
699 return __crypto_aead_cast(crypto_alloc_base(alg_name
, type
, mask
));
702 static inline struct crypto_tfm
*crypto_aead_tfm(struct crypto_aead
*tfm
)
707 static inline void crypto_free_aead(struct crypto_aead
*tfm
)
709 crypto_free_tfm(crypto_aead_tfm(tfm
));
712 static inline struct aead_tfm
*crypto_aead_crt(struct crypto_aead
*tfm
)
714 return &crypto_aead_tfm(tfm
)->crt_aead
;
717 static inline unsigned int crypto_aead_ivsize(struct crypto_aead
*tfm
)
719 return crypto_aead_crt(tfm
)->ivsize
;
722 static inline unsigned int crypto_aead_authsize(struct crypto_aead
*tfm
)
724 return crypto_aead_crt(tfm
)->authsize
;
727 static inline unsigned int crypto_aead_blocksize(struct crypto_aead
*tfm
)
729 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm
));
732 static inline unsigned int crypto_aead_alignmask(struct crypto_aead
*tfm
)
734 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm
));
737 static inline u32
crypto_aead_get_flags(struct crypto_aead
*tfm
)
739 return crypto_tfm_get_flags(crypto_aead_tfm(tfm
));
742 static inline void crypto_aead_set_flags(struct crypto_aead
*tfm
, u32 flags
)
744 crypto_tfm_set_flags(crypto_aead_tfm(tfm
), flags
);
747 static inline void crypto_aead_clear_flags(struct crypto_aead
*tfm
, u32 flags
)
749 crypto_tfm_clear_flags(crypto_aead_tfm(tfm
), flags
);
752 static inline int crypto_aead_setkey(struct crypto_aead
*tfm
, const u8
*key
,
755 return crypto_aead_crt(tfm
)->setkey(tfm
, key
, keylen
);
758 int crypto_aead_setauthsize(struct crypto_aead
*tfm
, unsigned int authsize
);
760 static inline struct crypto_aead
*crypto_aead_reqtfm(struct aead_request
*req
)
762 return __crypto_aead_cast(req
->base
.tfm
);
765 static inline int crypto_aead_encrypt(struct aead_request
*req
)
767 return crypto_aead_crt(crypto_aead_reqtfm(req
))->encrypt(req
);
770 static inline int crypto_aead_decrypt(struct aead_request
*req
)
772 return crypto_aead_crt(crypto_aead_reqtfm(req
))->decrypt(req
);
775 static inline unsigned int crypto_aead_reqsize(struct crypto_aead
*tfm
)
777 return crypto_aead_crt(tfm
)->reqsize
;
780 static inline void aead_request_set_tfm(struct aead_request
*req
,
781 struct crypto_aead
*tfm
)
783 req
->base
.tfm
= crypto_aead_tfm(tfm
);
786 static inline struct aead_request
*aead_request_alloc(struct crypto_aead
*tfm
,
789 struct aead_request
*req
;
791 req
= kmalloc(sizeof(*req
) + crypto_aead_reqsize(tfm
), gfp
);
794 aead_request_set_tfm(req
, tfm
);
799 static inline void aead_request_free(struct aead_request
*req
)
804 static inline void aead_request_set_callback(struct aead_request
*req
,
806 crypto_completion_t complete
,
809 req
->base
.complete
= complete
;
810 req
->base
.data
= data
;
811 req
->base
.flags
= flags
;
814 static inline void aead_request_set_crypt(struct aead_request
*req
,
815 struct scatterlist
*src
,
816 struct scatterlist
*dst
,
817 unsigned int cryptlen
, u8
*iv
)
821 req
->cryptlen
= cryptlen
;
825 static inline void aead_request_set_assoc(struct aead_request
*req
,
826 struct scatterlist
*assoc
,
827 unsigned int assoclen
)
830 req
->assoclen
= assoclen
;
833 static inline struct crypto_blkcipher
*__crypto_blkcipher_cast(
834 struct crypto_tfm
*tfm
)
836 return (struct crypto_blkcipher
*)tfm
;
839 static inline struct crypto_blkcipher
*crypto_blkcipher_cast(
840 struct crypto_tfm
*tfm
)
842 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_BLKCIPHER
);
843 return __crypto_blkcipher_cast(tfm
);
846 static inline struct crypto_blkcipher
*crypto_alloc_blkcipher(
847 const char *alg_name
, u32 type
, u32 mask
)
849 type
&= ~CRYPTO_ALG_TYPE_MASK
;
850 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
851 mask
|= CRYPTO_ALG_TYPE_MASK
;
853 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
856 static inline struct crypto_tfm
*crypto_blkcipher_tfm(
857 struct crypto_blkcipher
*tfm
)
862 static inline void crypto_free_blkcipher(struct crypto_blkcipher
*tfm
)
864 crypto_free_tfm(crypto_blkcipher_tfm(tfm
));
867 static inline int crypto_has_blkcipher(const char *alg_name
, u32 type
, u32 mask
)
869 type
&= ~CRYPTO_ALG_TYPE_MASK
;
870 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
871 mask
|= CRYPTO_ALG_TYPE_MASK
;
873 return crypto_has_alg(alg_name
, type
, mask
);
876 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher
*tfm
)
878 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm
));
881 static inline struct blkcipher_tfm
*crypto_blkcipher_crt(
882 struct crypto_blkcipher
*tfm
)
884 return &crypto_blkcipher_tfm(tfm
)->crt_blkcipher
;
887 static inline struct blkcipher_alg
*crypto_blkcipher_alg(
888 struct crypto_blkcipher
*tfm
)
890 return &crypto_blkcipher_tfm(tfm
)->__crt_alg
->cra_blkcipher
;
893 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher
*tfm
)
895 return crypto_blkcipher_alg(tfm
)->ivsize
;
898 static inline unsigned int crypto_blkcipher_blocksize(
899 struct crypto_blkcipher
*tfm
)
901 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm
));
904 static inline unsigned int crypto_blkcipher_alignmask(
905 struct crypto_blkcipher
*tfm
)
907 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm
));
910 static inline u32
crypto_blkcipher_get_flags(struct crypto_blkcipher
*tfm
)
912 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm
));
915 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher
*tfm
,
918 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm
), flags
);
921 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher
*tfm
,
924 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm
), flags
);
927 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher
*tfm
,
928 const u8
*key
, unsigned int keylen
)
930 return crypto_blkcipher_crt(tfm
)->setkey(crypto_blkcipher_tfm(tfm
),
934 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc
*desc
,
935 struct scatterlist
*dst
,
936 struct scatterlist
*src
,
939 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
940 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
943 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc
*desc
,
944 struct scatterlist
*dst
,
945 struct scatterlist
*src
,
948 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
951 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc
*desc
,
952 struct scatterlist
*dst
,
953 struct scatterlist
*src
,
956 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
957 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
960 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc
*desc
,
961 struct scatterlist
*dst
,
962 struct scatterlist
*src
,
965 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
968 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher
*tfm
,
969 const u8
*src
, unsigned int len
)
971 memcpy(crypto_blkcipher_crt(tfm
)->iv
, src
, len
);
974 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher
*tfm
,
975 u8
*dst
, unsigned int len
)
977 memcpy(dst
, crypto_blkcipher_crt(tfm
)->iv
, len
);
980 static inline struct crypto_cipher
*__crypto_cipher_cast(struct crypto_tfm
*tfm
)
982 return (struct crypto_cipher
*)tfm
;
985 static inline struct crypto_cipher
*crypto_cipher_cast(struct crypto_tfm
*tfm
)
987 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
988 return __crypto_cipher_cast(tfm
);
991 static inline struct crypto_cipher
*crypto_alloc_cipher(const char *alg_name
,
994 type
&= ~CRYPTO_ALG_TYPE_MASK
;
995 type
|= CRYPTO_ALG_TYPE_CIPHER
;
996 mask
|= CRYPTO_ALG_TYPE_MASK
;
998 return __crypto_cipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
1001 static inline struct crypto_tfm
*crypto_cipher_tfm(struct crypto_cipher
*tfm
)
1006 static inline void crypto_free_cipher(struct crypto_cipher
*tfm
)
1008 crypto_free_tfm(crypto_cipher_tfm(tfm
));
1011 static inline int crypto_has_cipher(const char *alg_name
, u32 type
, u32 mask
)
1013 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1014 type
|= CRYPTO_ALG_TYPE_CIPHER
;
1015 mask
|= CRYPTO_ALG_TYPE_MASK
;
1017 return crypto_has_alg(alg_name
, type
, mask
);
1020 static inline struct cipher_tfm
*crypto_cipher_crt(struct crypto_cipher
*tfm
)
1022 return &crypto_cipher_tfm(tfm
)->crt_cipher
;
1025 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher
*tfm
)
1027 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm
));
1030 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher
*tfm
)
1032 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm
));
1035 static inline u32
crypto_cipher_get_flags(struct crypto_cipher
*tfm
)
1037 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm
));
1040 static inline void crypto_cipher_set_flags(struct crypto_cipher
*tfm
,
1043 crypto_tfm_set_flags(crypto_cipher_tfm(tfm
), flags
);
1046 static inline void crypto_cipher_clear_flags(struct crypto_cipher
*tfm
,
1049 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm
), flags
);
1052 static inline int crypto_cipher_setkey(struct crypto_cipher
*tfm
,
1053 const u8
*key
, unsigned int keylen
)
1055 return crypto_cipher_crt(tfm
)->cit_setkey(crypto_cipher_tfm(tfm
),
1059 static inline void crypto_cipher_encrypt_one(struct crypto_cipher
*tfm
,
1060 u8
*dst
, const u8
*src
)
1062 crypto_cipher_crt(tfm
)->cit_encrypt_one(crypto_cipher_tfm(tfm
),
1066 static inline void crypto_cipher_decrypt_one(struct crypto_cipher
*tfm
,
1067 u8
*dst
, const u8
*src
)
1069 crypto_cipher_crt(tfm
)->cit_decrypt_one(crypto_cipher_tfm(tfm
),
1073 static inline struct crypto_hash
*__crypto_hash_cast(struct crypto_tfm
*tfm
)
1075 return (struct crypto_hash
*)tfm
;
1078 static inline struct crypto_hash
*crypto_hash_cast(struct crypto_tfm
*tfm
)
1080 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_HASH
) &
1081 CRYPTO_ALG_TYPE_HASH_MASK
);
1082 return __crypto_hash_cast(tfm
);
1085 static inline struct crypto_hash
*crypto_alloc_hash(const char *alg_name
,
1088 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1089 type
|= CRYPTO_ALG_TYPE_HASH
;
1090 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
1092 return __crypto_hash_cast(crypto_alloc_base(alg_name
, type
, mask
));
1095 static inline struct crypto_tfm
*crypto_hash_tfm(struct crypto_hash
*tfm
)
1100 static inline void crypto_free_hash(struct crypto_hash
*tfm
)
1102 crypto_free_tfm(crypto_hash_tfm(tfm
));
1105 static inline int crypto_has_hash(const char *alg_name
, u32 type
, u32 mask
)
1107 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1108 type
|= CRYPTO_ALG_TYPE_HASH
;
1109 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
1111 return crypto_has_alg(alg_name
, type
, mask
);
1114 static inline struct hash_tfm
*crypto_hash_crt(struct crypto_hash
*tfm
)
1116 return &crypto_hash_tfm(tfm
)->crt_hash
;
1119 static inline unsigned int crypto_hash_blocksize(struct crypto_hash
*tfm
)
1121 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm
));
1124 static inline unsigned int crypto_hash_alignmask(struct crypto_hash
*tfm
)
1126 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm
));
1129 static inline unsigned int crypto_hash_digestsize(struct crypto_hash
*tfm
)
1131 return crypto_hash_crt(tfm
)->digestsize
;
1134 static inline u32
crypto_hash_get_flags(struct crypto_hash
*tfm
)
1136 return crypto_tfm_get_flags(crypto_hash_tfm(tfm
));
1139 static inline void crypto_hash_set_flags(struct crypto_hash
*tfm
, u32 flags
)
1141 crypto_tfm_set_flags(crypto_hash_tfm(tfm
), flags
);
1144 static inline void crypto_hash_clear_flags(struct crypto_hash
*tfm
, u32 flags
)
1146 crypto_tfm_clear_flags(crypto_hash_tfm(tfm
), flags
);
1149 static inline int crypto_hash_init(struct hash_desc
*desc
)
1151 return crypto_hash_crt(desc
->tfm
)->init(desc
);
1154 static inline int crypto_hash_update(struct hash_desc
*desc
,
1155 struct scatterlist
*sg
,
1156 unsigned int nbytes
)
1158 return crypto_hash_crt(desc
->tfm
)->update(desc
, sg
, nbytes
);
1161 static inline int crypto_hash_final(struct hash_desc
*desc
, u8
*out
)
1163 return crypto_hash_crt(desc
->tfm
)->final(desc
, out
);
1166 static inline int crypto_hash_digest(struct hash_desc
*desc
,
1167 struct scatterlist
*sg
,
1168 unsigned int nbytes
, u8
*out
)
1170 return crypto_hash_crt(desc
->tfm
)->digest(desc
, sg
, nbytes
, out
);
1173 static inline int crypto_hash_setkey(struct crypto_hash
*hash
,
1174 const u8
*key
, unsigned int keylen
)
1176 return crypto_hash_crt(hash
)->setkey(hash
, key
, keylen
);
1179 static inline struct crypto_comp
*__crypto_comp_cast(struct crypto_tfm
*tfm
)
1181 return (struct crypto_comp
*)tfm
;
1184 static inline struct crypto_comp
*crypto_comp_cast(struct crypto_tfm
*tfm
)
1186 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_COMPRESS
) &
1187 CRYPTO_ALG_TYPE_MASK
);
1188 return __crypto_comp_cast(tfm
);
1191 static inline struct crypto_comp
*crypto_alloc_comp(const char *alg_name
,
1194 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1195 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1196 mask
|= CRYPTO_ALG_TYPE_MASK
;
1198 return __crypto_comp_cast(crypto_alloc_base(alg_name
, type
, mask
));
1201 static inline struct crypto_tfm
*crypto_comp_tfm(struct crypto_comp
*tfm
)
1206 static inline void crypto_free_comp(struct crypto_comp
*tfm
)
1208 crypto_free_tfm(crypto_comp_tfm(tfm
));
1211 static inline int crypto_has_comp(const char *alg_name
, u32 type
, u32 mask
)
1213 type
&= ~CRYPTO_ALG_TYPE_MASK
;
1214 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
1215 mask
|= CRYPTO_ALG_TYPE_MASK
;
1217 return crypto_has_alg(alg_name
, type
, mask
);
1220 static inline const char *crypto_comp_name(struct crypto_comp
*tfm
)
1222 return crypto_tfm_alg_name(crypto_comp_tfm(tfm
));
1225 static inline struct compress_tfm
*crypto_comp_crt(struct crypto_comp
*tfm
)
1227 return &crypto_comp_tfm(tfm
)->crt_compress
;
1230 static inline int crypto_comp_compress(struct crypto_comp
*tfm
,
1231 const u8
*src
, unsigned int slen
,
1232 u8
*dst
, unsigned int *dlen
)
1234 return crypto_comp_crt(tfm
)->cot_compress(crypto_comp_tfm(tfm
),
1235 src
, slen
, dst
, dlen
);
1238 static inline int crypto_comp_decompress(struct crypto_comp
*tfm
,
1239 const u8
*src
, unsigned int slen
,
1240 u8
*dst
, unsigned int *dlen
)
1242 return crypto_comp_crt(tfm
)->cot_decompress(crypto_comp_tfm(tfm
),
1243 src
, slen
, dst
, dlen
);
1246 #endif /* _LINUX_CRYPTO_H */