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_MODE_MASK 0x000000ff
55 #define CRYPTO_TFM_REQ_MASK 0x000fff00
56 #define CRYPTO_TFM_RES_MASK 0xfff00000
58 #define CRYPTO_TFM_MODE_ECB 0x00000001
59 #define CRYPTO_TFM_MODE_CBC 0x00000002
60 #define CRYPTO_TFM_MODE_CFB 0x00000004
61 #define CRYPTO_TFM_MODE_CTR 0x00000008
63 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
64 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
65 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
66 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
67 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
68 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
69 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
72 * Miscellaneous stuff.
74 #define CRYPTO_UNSPEC 0
75 #define CRYPTO_MAX_ALG_NAME 64
77 #define CRYPTO_DIR_ENCRYPT 1
78 #define CRYPTO_DIR_DECRYPT 0
81 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
82 * declaration) is used to ensure that the crypto_tfm context structure is
83 * aligned correctly for the given architecture so that there are no alignment
84 * faults for C data types. In particular, this is required on platforms such
85 * as arm where pointers are 32-bit aligned but there are data types such as
86 * u64 which require 64-bit alignment.
88 #if defined(ARCH_KMALLOC_MINALIGN)
89 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
90 #elif defined(ARCH_SLAB_MINALIGN)
91 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
94 #ifdef CRYPTO_MINALIGN
95 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
97 #define CRYPTO_MINALIGN_ATTR
101 struct crypto_blkcipher
;
106 struct blkcipher_desc
{
107 struct crypto_blkcipher
*tfm
;
113 struct crypto_tfm
*tfm
;
114 void (*crfn
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
115 unsigned int (*prfn
)(const struct cipher_desc
*desc
, u8
*dst
,
116 const u8
*src
, unsigned int nbytes
);
121 struct crypto_hash
*tfm
;
126 * Algorithms: modular crypto algorithm implementations, managed
127 * via crypto_register_alg() and crypto_unregister_alg().
129 struct blkcipher_alg
{
130 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
131 unsigned int keylen
);
132 int (*encrypt
)(struct blkcipher_desc
*desc
,
133 struct scatterlist
*dst
, struct scatterlist
*src
,
134 unsigned int nbytes
);
135 int (*decrypt
)(struct blkcipher_desc
*desc
,
136 struct scatterlist
*dst
, struct scatterlist
*src
,
137 unsigned int nbytes
);
139 unsigned int min_keysize
;
140 unsigned int max_keysize
;
145 unsigned int cia_min_keysize
;
146 unsigned int cia_max_keysize
;
147 int (*cia_setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
148 unsigned int keylen
);
149 void (*cia_encrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
150 void (*cia_decrypt
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
152 unsigned int (*cia_encrypt_ecb
)(const struct cipher_desc
*desc
,
153 u8
*dst
, const u8
*src
,
154 unsigned int nbytes
) __deprecated
;
155 unsigned int (*cia_decrypt_ecb
)(const struct cipher_desc
*desc
,
156 u8
*dst
, const u8
*src
,
157 unsigned int nbytes
) __deprecated
;
158 unsigned int (*cia_encrypt_cbc
)(const struct cipher_desc
*desc
,
159 u8
*dst
, const u8
*src
,
160 unsigned int nbytes
) __deprecated
;
161 unsigned int (*cia_decrypt_cbc
)(const struct cipher_desc
*desc
,
162 u8
*dst
, const u8
*src
,
163 unsigned int nbytes
) __deprecated
;
167 unsigned int dia_digestsize
;
168 void (*dia_init
)(struct crypto_tfm
*tfm
);
169 void (*dia_update
)(struct crypto_tfm
*tfm
, const u8
*data
,
171 void (*dia_final
)(struct crypto_tfm
*tfm
, u8
*out
);
172 int (*dia_setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
173 unsigned int keylen
);
177 int (*init
)(struct hash_desc
*desc
);
178 int (*update
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
179 unsigned int nbytes
);
180 int (*final
)(struct hash_desc
*desc
, u8
*out
);
181 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
182 unsigned int nbytes
, u8
*out
);
183 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
184 unsigned int keylen
);
186 unsigned int digestsize
;
189 struct compress_alg
{
190 int (*coa_compress
)(struct crypto_tfm
*tfm
, const u8
*src
,
191 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
192 int (*coa_decompress
)(struct crypto_tfm
*tfm
, const u8
*src
,
193 unsigned int slen
, u8
*dst
, unsigned int *dlen
);
196 #define cra_blkcipher cra_u.blkcipher
197 #define cra_cipher cra_u.cipher
198 #define cra_digest cra_u.digest
199 #define cra_hash cra_u.hash
200 #define cra_compress cra_u.compress
203 struct list_head cra_list
;
204 struct list_head cra_users
;
207 unsigned int cra_blocksize
;
208 unsigned int cra_ctxsize
;
209 unsigned int cra_alignmask
;
214 char cra_name
[CRYPTO_MAX_ALG_NAME
];
215 char cra_driver_name
[CRYPTO_MAX_ALG_NAME
];
217 const struct crypto_type
*cra_type
;
220 struct blkcipher_alg blkcipher
;
221 struct cipher_alg cipher
;
222 struct digest_alg digest
;
223 struct hash_alg hash
;
224 struct compress_alg compress
;
227 int (*cra_init
)(struct crypto_tfm
*tfm
);
228 void (*cra_exit
)(struct crypto_tfm
*tfm
);
229 void (*cra_destroy
)(struct crypto_alg
*alg
);
231 struct module
*cra_module
;
235 * Algorithm registration interface.
237 int crypto_register_alg(struct crypto_alg
*alg
);
238 int crypto_unregister_alg(struct crypto_alg
*alg
);
241 * Algorithm query interface.
244 int crypto_has_alg(const char *name
, u32 type
, u32 mask
);
246 static inline int crypto_alg_available(const char *name
, u32 flags
)
251 static inline int crypto_has_alg(const char *name
, u32 type
, u32 mask
)
258 * Transforms: user-instantiated objects which encapsulate algorithms
259 * and core processing logic. Managed via crypto_alloc_*() and
260 * crypto_free_*(), as well as the various helpers below.
263 struct blkcipher_tfm
{
265 int (*setkey
)(struct crypto_tfm
*tfm
, const u8
*key
,
266 unsigned int keylen
);
267 int (*encrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
268 struct scatterlist
*src
, unsigned int nbytes
);
269 int (*decrypt
)(struct blkcipher_desc
*desc
, struct scatterlist
*dst
,
270 struct scatterlist
*src
, unsigned int nbytes
);
275 unsigned int cit_ivsize
;
277 int (*cit_setkey
)(struct crypto_tfm
*tfm
,
278 const u8
*key
, unsigned int keylen
);
279 int (*cit_encrypt
)(struct crypto_tfm
*tfm
,
280 struct scatterlist
*dst
,
281 struct scatterlist
*src
,
282 unsigned int nbytes
);
283 int (*cit_encrypt_iv
)(struct crypto_tfm
*tfm
,
284 struct scatterlist
*dst
,
285 struct scatterlist
*src
,
286 unsigned int nbytes
, u8
*iv
);
287 int (*cit_decrypt
)(struct crypto_tfm
*tfm
,
288 struct scatterlist
*dst
,
289 struct scatterlist
*src
,
290 unsigned int nbytes
);
291 int (*cit_decrypt_iv
)(struct crypto_tfm
*tfm
,
292 struct scatterlist
*dst
,
293 struct scatterlist
*src
,
294 unsigned int nbytes
, u8
*iv
);
295 void (*cit_xor_block
)(u8
*dst
, const u8
*src
);
296 void (*cit_encrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
297 void (*cit_decrypt_one
)(struct crypto_tfm
*tfm
, u8
*dst
, const u8
*src
);
301 int (*init
)(struct hash_desc
*desc
);
302 int (*update
)(struct hash_desc
*desc
,
303 struct scatterlist
*sg
, unsigned int nsg
);
304 int (*final
)(struct hash_desc
*desc
, u8
*out
);
305 int (*digest
)(struct hash_desc
*desc
, struct scatterlist
*sg
,
306 unsigned int nsg
, u8
*out
);
307 int (*setkey
)(struct crypto_hash
*tfm
, const u8
*key
,
308 unsigned int keylen
);
309 unsigned int digestsize
;
312 struct compress_tfm
{
313 int (*cot_compress
)(struct crypto_tfm
*tfm
,
314 const u8
*src
, unsigned int slen
,
315 u8
*dst
, unsigned int *dlen
);
316 int (*cot_decompress
)(struct crypto_tfm
*tfm
,
317 const u8
*src
, unsigned int slen
,
318 u8
*dst
, unsigned int *dlen
);
321 #define crt_blkcipher crt_u.blkcipher
322 #define crt_cipher crt_u.cipher
323 #define crt_hash crt_u.hash
324 #define crt_compress crt_u.compress
331 struct blkcipher_tfm blkcipher
;
332 struct cipher_tfm cipher
;
333 struct hash_tfm hash
;
334 struct compress_tfm compress
;
337 struct crypto_alg
*__crt_alg
;
339 void *__crt_ctx
[] CRYPTO_MINALIGN_ATTR
;
342 #define crypto_cipher crypto_tfm
343 #define crypto_comp crypto_tfm
345 struct crypto_blkcipher
{
346 struct crypto_tfm base
;
350 struct crypto_tfm base
;
358 struct crypto_attr_alg
{
359 char name
[CRYPTO_MAX_ALG_NAME
];
363 * Transform user interface.
366 struct crypto_tfm
*crypto_alloc_tfm(const char *alg_name
, u32 tfm_flags
);
367 struct crypto_tfm
*crypto_alloc_base(const char *alg_name
, u32 type
, u32 mask
);
368 void crypto_free_tfm(struct crypto_tfm
*tfm
);
371 * Transform helpers which query the underlying algorithm.
373 static inline const char *crypto_tfm_alg_name(struct crypto_tfm
*tfm
)
375 return tfm
->__crt_alg
->cra_name
;
378 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm
*tfm
)
380 return tfm
->__crt_alg
->cra_driver_name
;
383 static inline int crypto_tfm_alg_priority(struct crypto_tfm
*tfm
)
385 return tfm
->__crt_alg
->cra_priority
;
388 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm
*tfm
)
390 return module_name(tfm
->__crt_alg
->cra_module
);
393 static inline u32
crypto_tfm_alg_type(struct crypto_tfm
*tfm
)
395 return tfm
->__crt_alg
->cra_flags
& CRYPTO_ALG_TYPE_MASK
;
398 static unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm
*tfm
)
400 static inline unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm
*tfm
)
402 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
403 return tfm
->__crt_alg
->cra_cipher
.cia_min_keysize
;
406 static unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm
*tfm
)
408 static inline unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm
*tfm
)
410 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
411 return tfm
->__crt_alg
->cra_cipher
.cia_max_keysize
;
414 static unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm
*tfm
) __deprecated
;
415 static inline unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm
*tfm
)
417 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
418 return tfm
->crt_cipher
.cit_ivsize
;
421 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm
*tfm
)
423 return tfm
->__crt_alg
->cra_blocksize
;
426 static inline unsigned int crypto_tfm_alg_digestsize(struct crypto_tfm
*tfm
)
428 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_DIGEST
);
429 return tfm
->__crt_alg
->cra_digest
.dia_digestsize
;
432 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm
*tfm
)
434 return tfm
->__crt_alg
->cra_alignmask
;
437 static inline u32
crypto_tfm_get_flags(struct crypto_tfm
*tfm
)
439 return tfm
->crt_flags
;
442 static inline void crypto_tfm_set_flags(struct crypto_tfm
*tfm
, u32 flags
)
444 tfm
->crt_flags
|= flags
;
447 static inline void crypto_tfm_clear_flags(struct crypto_tfm
*tfm
, u32 flags
)
449 tfm
->crt_flags
&= ~flags
;
452 static inline void *crypto_tfm_ctx(struct crypto_tfm
*tfm
)
454 return tfm
->__crt_ctx
;
457 static inline unsigned int crypto_tfm_ctx_alignment(void)
459 struct crypto_tfm
*tfm
;
460 return __alignof__(tfm
->__crt_ctx
);
466 static inline struct crypto_blkcipher
*__crypto_blkcipher_cast(
467 struct crypto_tfm
*tfm
)
469 return (struct crypto_blkcipher
*)tfm
;
472 static inline struct crypto_blkcipher
*crypto_blkcipher_cast(
473 struct crypto_tfm
*tfm
)
475 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_BLKCIPHER
);
476 return __crypto_blkcipher_cast(tfm
);
479 static inline struct crypto_blkcipher
*crypto_alloc_blkcipher(
480 const char *alg_name
, u32 type
, u32 mask
)
482 type
&= ~CRYPTO_ALG_TYPE_MASK
;
483 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
484 mask
|= CRYPTO_ALG_TYPE_MASK
;
486 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
489 static inline struct crypto_tfm
*crypto_blkcipher_tfm(
490 struct crypto_blkcipher
*tfm
)
495 static inline void crypto_free_blkcipher(struct crypto_blkcipher
*tfm
)
497 crypto_free_tfm(crypto_blkcipher_tfm(tfm
));
500 static inline int crypto_has_blkcipher(const char *alg_name
, u32 type
, u32 mask
)
502 type
&= ~CRYPTO_ALG_TYPE_MASK
;
503 type
|= CRYPTO_ALG_TYPE_BLKCIPHER
;
504 mask
|= CRYPTO_ALG_TYPE_MASK
;
506 return crypto_has_alg(alg_name
, type
, mask
);
509 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher
*tfm
)
511 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm
));
514 static inline struct blkcipher_tfm
*crypto_blkcipher_crt(
515 struct crypto_blkcipher
*tfm
)
517 return &crypto_blkcipher_tfm(tfm
)->crt_blkcipher
;
520 static inline struct blkcipher_alg
*crypto_blkcipher_alg(
521 struct crypto_blkcipher
*tfm
)
523 return &crypto_blkcipher_tfm(tfm
)->__crt_alg
->cra_blkcipher
;
526 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher
*tfm
)
528 return crypto_blkcipher_alg(tfm
)->ivsize
;
531 static inline unsigned int crypto_blkcipher_blocksize(
532 struct crypto_blkcipher
*tfm
)
534 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm
));
537 static inline unsigned int crypto_blkcipher_alignmask(
538 struct crypto_blkcipher
*tfm
)
540 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm
));
543 static inline u32
crypto_blkcipher_get_flags(struct crypto_blkcipher
*tfm
)
545 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm
));
548 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher
*tfm
,
551 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm
), flags
);
554 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher
*tfm
,
557 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm
), flags
);
560 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher
*tfm
,
561 const u8
*key
, unsigned int keylen
)
563 return crypto_blkcipher_crt(tfm
)->setkey(crypto_blkcipher_tfm(tfm
),
567 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc
*desc
,
568 struct scatterlist
*dst
,
569 struct scatterlist
*src
,
572 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
573 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
576 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc
*desc
,
577 struct scatterlist
*dst
,
578 struct scatterlist
*src
,
581 return crypto_blkcipher_crt(desc
->tfm
)->encrypt(desc
, dst
, src
, nbytes
);
584 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc
*desc
,
585 struct scatterlist
*dst
,
586 struct scatterlist
*src
,
589 desc
->info
= crypto_blkcipher_crt(desc
->tfm
)->iv
;
590 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
593 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc
*desc
,
594 struct scatterlist
*dst
,
595 struct scatterlist
*src
,
598 return crypto_blkcipher_crt(desc
->tfm
)->decrypt(desc
, dst
, src
, nbytes
);
601 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher
*tfm
,
602 const u8
*src
, unsigned int len
)
604 memcpy(crypto_blkcipher_crt(tfm
)->iv
, src
, len
);
607 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher
*tfm
,
608 u8
*dst
, unsigned int len
)
610 memcpy(dst
, crypto_blkcipher_crt(tfm
)->iv
, len
);
613 static inline struct crypto_cipher
*__crypto_cipher_cast(struct crypto_tfm
*tfm
)
615 return (struct crypto_cipher
*)tfm
;
618 static inline struct crypto_cipher
*crypto_cipher_cast(struct crypto_tfm
*tfm
)
620 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
621 return __crypto_cipher_cast(tfm
);
624 static inline struct crypto_cipher
*crypto_alloc_cipher(const char *alg_name
,
627 type
&= ~CRYPTO_ALG_TYPE_MASK
;
628 type
|= CRYPTO_ALG_TYPE_CIPHER
;
629 mask
|= CRYPTO_ALG_TYPE_MASK
;
631 return __crypto_cipher_cast(crypto_alloc_base(alg_name
, type
, mask
));
634 static inline struct crypto_tfm
*crypto_cipher_tfm(struct crypto_cipher
*tfm
)
639 static inline void crypto_free_cipher(struct crypto_cipher
*tfm
)
641 crypto_free_tfm(crypto_cipher_tfm(tfm
));
644 static inline int crypto_has_cipher(const char *alg_name
, u32 type
, u32 mask
)
646 type
&= ~CRYPTO_ALG_TYPE_MASK
;
647 type
|= CRYPTO_ALG_TYPE_CIPHER
;
648 mask
|= CRYPTO_ALG_TYPE_MASK
;
650 return crypto_has_alg(alg_name
, type
, mask
);
653 static inline struct cipher_tfm
*crypto_cipher_crt(struct crypto_cipher
*tfm
)
655 return &crypto_cipher_tfm(tfm
)->crt_cipher
;
658 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher
*tfm
)
660 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm
));
663 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher
*tfm
)
665 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm
));
668 static inline u32
crypto_cipher_get_flags(struct crypto_cipher
*tfm
)
670 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm
));
673 static inline void crypto_cipher_set_flags(struct crypto_cipher
*tfm
,
676 crypto_tfm_set_flags(crypto_cipher_tfm(tfm
), flags
);
679 static inline void crypto_cipher_clear_flags(struct crypto_cipher
*tfm
,
682 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm
), flags
);
685 static inline int crypto_cipher_setkey(struct crypto_cipher
*tfm
,
686 const u8
*key
, unsigned int keylen
)
688 return crypto_cipher_crt(tfm
)->cit_setkey(crypto_cipher_tfm(tfm
),
692 static inline void crypto_cipher_encrypt_one(struct crypto_cipher
*tfm
,
693 u8
*dst
, const u8
*src
)
695 crypto_cipher_crt(tfm
)->cit_encrypt_one(crypto_cipher_tfm(tfm
),
699 static inline void crypto_cipher_decrypt_one(struct crypto_cipher
*tfm
,
700 u8
*dst
, const u8
*src
)
702 crypto_cipher_crt(tfm
)->cit_decrypt_one(crypto_cipher_tfm(tfm
),
706 static inline struct crypto_hash
*__crypto_hash_cast(struct crypto_tfm
*tfm
)
708 return (struct crypto_hash
*)tfm
;
711 static inline struct crypto_hash
*crypto_hash_cast(struct crypto_tfm
*tfm
)
713 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_HASH
) &
714 CRYPTO_ALG_TYPE_HASH_MASK
);
715 return __crypto_hash_cast(tfm
);
718 static inline struct crypto_hash
*crypto_alloc_hash(const char *alg_name
,
721 type
&= ~CRYPTO_ALG_TYPE_MASK
;
722 type
|= CRYPTO_ALG_TYPE_HASH
;
723 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
725 return __crypto_hash_cast(crypto_alloc_base(alg_name
, type
, mask
));
728 static inline struct crypto_tfm
*crypto_hash_tfm(struct crypto_hash
*tfm
)
733 static inline void crypto_free_hash(struct crypto_hash
*tfm
)
735 crypto_free_tfm(crypto_hash_tfm(tfm
));
738 static inline int crypto_has_hash(const char *alg_name
, u32 type
, u32 mask
)
740 type
&= ~CRYPTO_ALG_TYPE_MASK
;
741 type
|= CRYPTO_ALG_TYPE_HASH
;
742 mask
|= CRYPTO_ALG_TYPE_HASH_MASK
;
744 return crypto_has_alg(alg_name
, type
, mask
);
747 static inline struct hash_tfm
*crypto_hash_crt(struct crypto_hash
*tfm
)
749 return &crypto_hash_tfm(tfm
)->crt_hash
;
752 static inline unsigned int crypto_hash_blocksize(struct crypto_hash
*tfm
)
754 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm
));
757 static inline unsigned int crypto_hash_alignmask(struct crypto_hash
*tfm
)
759 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm
));
762 static inline unsigned int crypto_hash_digestsize(struct crypto_hash
*tfm
)
764 return crypto_hash_crt(tfm
)->digestsize
;
767 static inline u32
crypto_hash_get_flags(struct crypto_hash
*tfm
)
769 return crypto_tfm_get_flags(crypto_hash_tfm(tfm
));
772 static inline void crypto_hash_set_flags(struct crypto_hash
*tfm
, u32 flags
)
774 crypto_tfm_set_flags(crypto_hash_tfm(tfm
), flags
);
777 static inline void crypto_hash_clear_flags(struct crypto_hash
*tfm
, u32 flags
)
779 crypto_tfm_clear_flags(crypto_hash_tfm(tfm
), flags
);
782 static inline int crypto_hash_init(struct hash_desc
*desc
)
784 return crypto_hash_crt(desc
->tfm
)->init(desc
);
787 static inline int crypto_hash_update(struct hash_desc
*desc
,
788 struct scatterlist
*sg
,
791 return crypto_hash_crt(desc
->tfm
)->update(desc
, sg
, nbytes
);
794 static inline int crypto_hash_final(struct hash_desc
*desc
, u8
*out
)
796 return crypto_hash_crt(desc
->tfm
)->final(desc
, out
);
799 static inline int crypto_hash_digest(struct hash_desc
*desc
,
800 struct scatterlist
*sg
,
801 unsigned int nbytes
, u8
*out
)
803 return crypto_hash_crt(desc
->tfm
)->digest(desc
, sg
, nbytes
, out
);
806 static inline int crypto_hash_setkey(struct crypto_hash
*hash
,
807 const u8
*key
, unsigned int keylen
)
809 return crypto_hash_crt(hash
)->setkey(hash
, key
, keylen
);
812 static int crypto_cipher_encrypt(struct crypto_tfm
*tfm
,
813 struct scatterlist
*dst
,
814 struct scatterlist
*src
,
815 unsigned int nbytes
) __deprecated
;
816 static inline int crypto_cipher_encrypt(struct crypto_tfm
*tfm
,
817 struct scatterlist
*dst
,
818 struct scatterlist
*src
,
821 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
822 return tfm
->crt_cipher
.cit_encrypt(tfm
, dst
, src
, nbytes
);
825 static int crypto_cipher_encrypt_iv(struct crypto_tfm
*tfm
,
826 struct scatterlist
*dst
,
827 struct scatterlist
*src
,
828 unsigned int nbytes
, u8
*iv
) __deprecated
;
829 static inline int crypto_cipher_encrypt_iv(struct crypto_tfm
*tfm
,
830 struct scatterlist
*dst
,
831 struct scatterlist
*src
,
832 unsigned int nbytes
, u8
*iv
)
834 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
835 return tfm
->crt_cipher
.cit_encrypt_iv(tfm
, dst
, src
, nbytes
, iv
);
838 static int crypto_cipher_decrypt(struct crypto_tfm
*tfm
,
839 struct scatterlist
*dst
,
840 struct scatterlist
*src
,
841 unsigned int nbytes
) __deprecated
;
842 static inline int crypto_cipher_decrypt(struct crypto_tfm
*tfm
,
843 struct scatterlist
*dst
,
844 struct scatterlist
*src
,
847 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
848 return tfm
->crt_cipher
.cit_decrypt(tfm
, dst
, src
, nbytes
);
851 static int crypto_cipher_decrypt_iv(struct crypto_tfm
*tfm
,
852 struct scatterlist
*dst
,
853 struct scatterlist
*src
,
854 unsigned int nbytes
, u8
*iv
) __deprecated
;
855 static inline int crypto_cipher_decrypt_iv(struct crypto_tfm
*tfm
,
856 struct scatterlist
*dst
,
857 struct scatterlist
*src
,
858 unsigned int nbytes
, u8
*iv
)
860 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
861 return tfm
->crt_cipher
.cit_decrypt_iv(tfm
, dst
, src
, nbytes
, iv
);
864 static void crypto_cipher_set_iv(struct crypto_tfm
*tfm
,
865 const u8
*src
, unsigned int len
) __deprecated
;
866 static inline void crypto_cipher_set_iv(struct crypto_tfm
*tfm
,
867 const u8
*src
, unsigned int len
)
869 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
870 memcpy(tfm
->crt_cipher
.cit_iv
, src
, len
);
873 static void crypto_cipher_get_iv(struct crypto_tfm
*tfm
,
874 u8
*dst
, unsigned int len
) __deprecated
;
875 static inline void crypto_cipher_get_iv(struct crypto_tfm
*tfm
,
876 u8
*dst
, unsigned int len
)
878 BUG_ON(crypto_tfm_alg_type(tfm
) != CRYPTO_ALG_TYPE_CIPHER
);
879 memcpy(dst
, tfm
->crt_cipher
.cit_iv
, len
);
882 static inline struct crypto_comp
*__crypto_comp_cast(struct crypto_tfm
*tfm
)
884 return (struct crypto_comp
*)tfm
;
887 static inline struct crypto_comp
*crypto_comp_cast(struct crypto_tfm
*tfm
)
889 BUG_ON((crypto_tfm_alg_type(tfm
) ^ CRYPTO_ALG_TYPE_COMPRESS
) &
890 CRYPTO_ALG_TYPE_MASK
);
891 return __crypto_comp_cast(tfm
);
894 static inline struct crypto_comp
*crypto_alloc_comp(const char *alg_name
,
897 type
&= ~CRYPTO_ALG_TYPE_MASK
;
898 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
899 mask
|= CRYPTO_ALG_TYPE_MASK
;
901 return __crypto_comp_cast(crypto_alloc_base(alg_name
, type
, mask
));
904 static inline struct crypto_tfm
*crypto_comp_tfm(struct crypto_comp
*tfm
)
909 static inline void crypto_free_comp(struct crypto_comp
*tfm
)
911 crypto_free_tfm(crypto_comp_tfm(tfm
));
914 static inline int crypto_has_comp(const char *alg_name
, u32 type
, u32 mask
)
916 type
&= ~CRYPTO_ALG_TYPE_MASK
;
917 type
|= CRYPTO_ALG_TYPE_COMPRESS
;
918 mask
|= CRYPTO_ALG_TYPE_MASK
;
920 return crypto_has_alg(alg_name
, type
, mask
);
923 static inline const char *crypto_comp_name(struct crypto_comp
*tfm
)
925 return crypto_tfm_alg_name(crypto_comp_tfm(tfm
));
928 static inline struct compress_tfm
*crypto_comp_crt(struct crypto_comp
*tfm
)
930 return &crypto_comp_tfm(tfm
)->crt_compress
;
933 static inline int crypto_comp_compress(struct crypto_comp
*tfm
,
934 const u8
*src
, unsigned int slen
,
935 u8
*dst
, unsigned int *dlen
)
937 return crypto_comp_crt(tfm
)->cot_compress(tfm
, src
, slen
, dst
, dlen
);
940 static inline int crypto_comp_decompress(struct crypto_comp
*tfm
,
941 const u8
*src
, unsigned int slen
,
942 u8
*dst
, unsigned int *dlen
)
944 return crypto_comp_crt(tfm
)->cot_decompress(tfm
, src
, slen
, dst
, dlen
);
947 #endif /* _LINUX_CRYPTO_H */