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_BLKCIPHER 0x00000003
35 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000004
37 #define CRYPTO_ALG_LARVAL 0x00000010
38 #define CRYPTO_ALG_DEAD 0x00000020
39 #define CRYPTO_ALG_DYING 0x00000040
40 #define CRYPTO_ALG_ASYNC 0x00000080
43 * Transform masks and values (for crt_flags).
45 #define CRYPTO_TFM_MODE_MASK 0x000000ff
46 #define CRYPTO_TFM_REQ_MASK 0x000fff00
47 #define CRYPTO_TFM_RES_MASK 0xfff00000
49 #define CRYPTO_TFM_MODE_ECB 0x00000001
50 #define CRYPTO_TFM_MODE_CBC 0x00000002
51 #define CRYPTO_TFM_MODE_CFB 0x00000004
52 #define CRYPTO_TFM_MODE_CTR 0x00000008
54 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
55 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
56 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
57 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
58 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
59 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
60 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
63 * Miscellaneous stuff.
65 #define CRYPTO_UNSPEC 0
66 #define CRYPTO_MAX_ALG_NAME 64
68 #define CRYPTO_DIR_ENCRYPT 1
69 #define CRYPTO_DIR_DECRYPT 0
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_blkcipher;
96 struct blkcipher_desc {
97 struct crypto_blkcipher *tfm;
103 struct crypto_tfm *tfm;
104 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
105 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
106 const u8 *src, unsigned int nbytes);
111 * Algorithms: modular crypto algorithm implementations, managed
112 * via crypto_register_alg() and crypto_unregister_alg().
114 struct blkcipher_alg {
115 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
116 unsigned int keylen);
117 int (*encrypt)(struct blkcipher_desc *desc,
118 struct scatterlist *dst, struct scatterlist *src,
119 unsigned int nbytes);
120 int (*decrypt)(struct blkcipher_desc *desc,
121 struct scatterlist *dst, struct scatterlist *src,
122 unsigned int nbytes);
124 unsigned int min_keysize;
125 unsigned int max_keysize;
130 unsigned int cia_min_keysize;
131 unsigned int cia_max_keysize;
132 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
133 unsigned int keylen);
134 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
135 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
137 unsigned int (*cia_encrypt_ecb)(const struct cipher_desc *desc,
138 u8 *dst, const u8 *src,
139 unsigned int nbytes) __deprecated;
140 unsigned int (*cia_decrypt_ecb)(const struct cipher_desc *desc,
141 u8 *dst, const u8 *src,
142 unsigned int nbytes) __deprecated;
143 unsigned int (*cia_encrypt_cbc)(const struct cipher_desc *desc,
144 u8 *dst, const u8 *src,
145 unsigned int nbytes) __deprecated;
146 unsigned int (*cia_decrypt_cbc)(const struct cipher_desc *desc,
147 u8 *dst, const u8 *src,
148 unsigned int nbytes) __deprecated;
152 unsigned int dia_digestsize;
153 void (*dia_init)(struct crypto_tfm *tfm);
154 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
156 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
157 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
158 unsigned int keylen);
161 struct compress_alg {
162 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
163 unsigned int slen, u8 *dst, unsigned int *dlen);
164 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
165 unsigned int slen, u8 *dst, unsigned int *dlen);
168 #define cra_blkcipher cra_u.blkcipher
169 #define cra_cipher cra_u.cipher
170 #define cra_digest cra_u.digest
171 #define cra_compress cra_u.compress
174 struct list_head cra_list;
175 struct list_head cra_users;
178 unsigned int cra_blocksize;
179 unsigned int cra_ctxsize;
180 unsigned int cra_alignmask;
185 char cra_name[CRYPTO_MAX_ALG_NAME];
186 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
188 const struct crypto_type *cra_type;
191 struct blkcipher_alg blkcipher;
192 struct cipher_alg cipher;
193 struct digest_alg digest;
194 struct compress_alg compress;
197 int (*cra_init)(struct crypto_tfm *tfm);
198 void (*cra_exit)(struct crypto_tfm *tfm);
199 void (*cra_destroy)(struct crypto_alg *alg);
201 struct module *cra_module;
205 * Algorithm registration interface.
207 int crypto_register_alg(struct crypto_alg *alg);
208 int crypto_unregister_alg(struct crypto_alg *alg);
211 * Algorithm query interface.
214 int crypto_alg_available(const char *name, u32 flags);
216 static inline int crypto_alg_available(const char *name, u32 flags)
223 * Transforms: user-instantiated objects which encapsulate algorithms
224 * and core processing logic. Managed via crypto_alloc_*() and
225 * crypto_free_*(), as well as the various helpers below.
228 struct blkcipher_tfm {
230 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
231 unsigned int keylen);
232 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
233 struct scatterlist *src, unsigned int nbytes);
234 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
235 struct scatterlist *src, unsigned int nbytes);
240 unsigned int cit_ivsize;
242 int (*cit_setkey)(struct crypto_tfm *tfm,
243 const u8 *key, unsigned int keylen);
244 int (*cit_encrypt)(struct crypto_tfm *tfm,
245 struct scatterlist *dst,
246 struct scatterlist *src,
247 unsigned int nbytes);
248 int (*cit_encrypt_iv)(struct crypto_tfm *tfm,
249 struct scatterlist *dst,
250 struct scatterlist *src,
251 unsigned int nbytes, u8 *iv);
252 int (*cit_decrypt)(struct crypto_tfm *tfm,
253 struct scatterlist *dst,
254 struct scatterlist *src,
255 unsigned int nbytes);
256 int (*cit_decrypt_iv)(struct crypto_tfm *tfm,
257 struct scatterlist *dst,
258 struct scatterlist *src,
259 unsigned int nbytes, u8 *iv);
260 void (*cit_xor_block)(u8 *dst, const u8 *src);
261 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
262 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
266 void (*dit_init)(struct crypto_tfm *tfm);
267 void (*dit_update)(struct crypto_tfm *tfm,
268 struct scatterlist *sg, unsigned int nsg);
269 void (*dit_final)(struct crypto_tfm *tfm, u8 *out);
270 void (*dit_digest)(struct crypto_tfm *tfm, struct scatterlist *sg,
271 unsigned int nsg, u8 *out);
272 int (*dit_setkey)(struct crypto_tfm *tfm,
273 const u8 *key, unsigned int keylen);
274 #ifdef CONFIG_CRYPTO_HMAC
275 void *dit_hmac_block;
279 struct compress_tfm {
280 int (*cot_compress)(struct crypto_tfm *tfm,
281 const u8 *src, unsigned int slen,
282 u8 *dst, unsigned int *dlen);
283 int (*cot_decompress)(struct crypto_tfm *tfm,
284 const u8 *src, unsigned int slen,
285 u8 *dst, unsigned int *dlen);
288 #define crt_blkcipher crt_u.blkcipher
289 #define crt_cipher crt_u.cipher
290 #define crt_digest crt_u.digest
291 #define crt_compress crt_u.compress
298 struct blkcipher_tfm blkcipher;
299 struct cipher_tfm cipher;
300 struct digest_tfm digest;
301 struct compress_tfm compress;
304 struct crypto_alg *__crt_alg;
306 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
309 #define crypto_cipher crypto_tfm
311 struct crypto_blkcipher {
312 struct crypto_tfm base;
320 struct crypto_attr_alg {
321 char name[CRYPTO_MAX_ALG_NAME];
325 * Transform user interface.
328 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
329 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
330 void crypto_free_tfm(struct crypto_tfm *tfm);
333 * Transform helpers which query the underlying algorithm.
335 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
337 return tfm->__crt_alg->cra_name;
340 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
342 return tfm->__crt_alg->cra_driver_name;
345 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
347 return tfm->__crt_alg->cra_priority;
350 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
352 return module_name(tfm->__crt_alg->cra_module);
355 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
357 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
360 static unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
362 static inline unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
364 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
365 return tfm->__crt_alg->cra_cipher.cia_min_keysize;
368 static unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm *tfm)
370 static inline unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm *tfm)
372 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
373 return tfm->__crt_alg->cra_cipher.cia_max_keysize;
376 static unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm *tfm) __deprecated;
377 static inline unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm *tfm)
379 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
380 return tfm->crt_cipher.cit_ivsize;
383 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
385 return tfm->__crt_alg->cra_blocksize;
388 static inline unsigned int crypto_tfm_alg_digestsize(struct crypto_tfm *tfm)
390 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
391 return tfm->__crt_alg->cra_digest.dia_digestsize;
394 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
396 return tfm->__crt_alg->cra_alignmask;
399 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
401 return tfm->crt_flags;
404 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
406 tfm->crt_flags |= flags;
409 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
411 tfm->crt_flags &= ~flags;
414 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
416 return tfm->__crt_ctx;
419 static inline unsigned int crypto_tfm_ctx_alignment(void)
421 struct crypto_tfm *tfm;
422 return __alignof__(tfm->__crt_ctx);
428 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
429 struct crypto_tfm *tfm)
431 return (struct crypto_blkcipher *)tfm;
434 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
435 struct crypto_tfm *tfm)
437 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
438 return __crypto_blkcipher_cast(tfm);
441 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
442 const char *alg_name, u32 type, u32 mask)
444 type &= ~CRYPTO_ALG_TYPE_MASK;
445 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
446 mask |= CRYPTO_ALG_TYPE_MASK;
448 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
451 static inline struct crypto_tfm *crypto_blkcipher_tfm(
452 struct crypto_blkcipher *tfm)
457 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
459 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
462 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
464 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
467 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
468 struct crypto_blkcipher *tfm)
470 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
473 static inline struct blkcipher_alg *crypto_blkcipher_alg(
474 struct crypto_blkcipher *tfm)
476 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
479 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
481 return crypto_blkcipher_alg(tfm)->ivsize;
484 static inline unsigned int crypto_blkcipher_blocksize(
485 struct crypto_blkcipher *tfm)
487 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
490 static inline unsigned int crypto_blkcipher_alignmask(
491 struct crypto_blkcipher *tfm)
493 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
496 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
498 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
501 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
504 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
507 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
510 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
513 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
514 const u8 *key, unsigned int keylen)
516 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
520 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
521 struct scatterlist *dst,
522 struct scatterlist *src,
525 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
526 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
529 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
530 struct scatterlist *dst,
531 struct scatterlist *src,
534 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
537 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
538 struct scatterlist *dst,
539 struct scatterlist *src,
542 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
543 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
546 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
547 struct scatterlist *dst,
548 struct scatterlist *src,
551 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
554 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
555 const u8 *src, unsigned int len)
557 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
560 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
561 u8 *dst, unsigned int len)
563 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
566 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
568 return (struct crypto_cipher *)tfm;
571 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
573 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
574 return __crypto_cipher_cast(tfm);
577 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
580 type &= ~CRYPTO_ALG_TYPE_MASK;
581 type |= CRYPTO_ALG_TYPE_CIPHER;
582 mask |= CRYPTO_ALG_TYPE_MASK;
584 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
587 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
592 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
594 crypto_free_tfm(crypto_cipher_tfm(tfm));
597 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
599 return &crypto_cipher_tfm(tfm)->crt_cipher;
602 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
604 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
607 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
609 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
612 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
614 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
617 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
620 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
623 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
626 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
629 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
630 const u8 *key, unsigned int keylen)
632 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
636 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
637 u8 *dst, const u8 *src)
639 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
643 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
644 u8 *dst, const u8 *src)
646 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
650 static inline void crypto_digest_init(struct crypto_tfm *tfm)
652 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
653 tfm->crt_digest.dit_init(tfm);
656 static inline void crypto_digest_update(struct crypto_tfm *tfm,
657 struct scatterlist *sg,
660 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
661 tfm->crt_digest.dit_update(tfm, sg, nsg);
664 static inline void crypto_digest_final(struct crypto_tfm *tfm, u8 *out)
666 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
667 tfm->crt_digest.dit_final(tfm, out);
670 static inline void crypto_digest_digest(struct crypto_tfm *tfm,
671 struct scatterlist *sg,
672 unsigned int nsg, u8 *out)
674 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
675 tfm->crt_digest.dit_digest(tfm, sg, nsg, out);
678 static inline int crypto_digest_setkey(struct crypto_tfm *tfm,
679 const u8 *key, unsigned int keylen)
681 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
682 return tfm->crt_digest.dit_setkey(tfm, key, keylen);
685 static int crypto_cipher_encrypt(struct crypto_tfm *tfm,
686 struct scatterlist *dst,
687 struct scatterlist *src,
688 unsigned int nbytes) __deprecated;
689 static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm,
690 struct scatterlist *dst,
691 struct scatterlist *src,
694 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
695 return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes);
698 static int crypto_cipher_encrypt_iv(struct crypto_tfm *tfm,
699 struct scatterlist *dst,
700 struct scatterlist *src,
701 unsigned int nbytes, u8 *iv) __deprecated;
702 static inline int crypto_cipher_encrypt_iv(struct crypto_tfm *tfm,
703 struct scatterlist *dst,
704 struct scatterlist *src,
705 unsigned int nbytes, u8 *iv)
707 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
708 return tfm->crt_cipher.cit_encrypt_iv(tfm, dst, src, nbytes, iv);
711 static int crypto_cipher_decrypt(struct crypto_tfm *tfm,
712 struct scatterlist *dst,
713 struct scatterlist *src,
714 unsigned int nbytes) __deprecated;
715 static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm,
716 struct scatterlist *dst,
717 struct scatterlist *src,
720 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
721 return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes);
724 static int crypto_cipher_decrypt_iv(struct crypto_tfm *tfm,
725 struct scatterlist *dst,
726 struct scatterlist *src,
727 unsigned int nbytes, u8 *iv) __deprecated;
728 static inline int crypto_cipher_decrypt_iv(struct crypto_tfm *tfm,
729 struct scatterlist *dst,
730 struct scatterlist *src,
731 unsigned int nbytes, u8 *iv)
733 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
734 return tfm->crt_cipher.cit_decrypt_iv(tfm, dst, src, nbytes, iv);
737 static void crypto_cipher_set_iv(struct crypto_tfm *tfm,
738 const u8 *src, unsigned int len) __deprecated;
739 static inline void crypto_cipher_set_iv(struct crypto_tfm *tfm,
740 const u8 *src, unsigned int len)
742 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
743 memcpy(tfm->crt_cipher.cit_iv, src, len);
746 static void crypto_cipher_get_iv(struct crypto_tfm *tfm,
747 u8 *dst, unsigned int len) __deprecated;
748 static inline void crypto_cipher_get_iv(struct crypto_tfm *tfm,
749 u8 *dst, unsigned int len)
751 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
752 memcpy(dst, tfm->crt_cipher.cit_iv, len);
755 static inline int crypto_comp_compress(struct crypto_tfm *tfm,
756 const u8 *src, unsigned int slen,
757 u8 *dst, unsigned int *dlen)
759 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_COMPRESS);
760 return tfm->crt_compress.cot_compress(tfm, src, slen, dst, dlen);
763 static inline int crypto_comp_decompress(struct crypto_tfm *tfm,
764 const u8 *src, unsigned int slen,
765 u8 *dst, unsigned int *dlen)
767 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_COMPRESS);
768 return tfm->crt_compress.cot_decompress(tfm, src, slen, dst, dlen);
774 #ifdef CONFIG_CRYPTO_HMAC
775 void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen);
776 void crypto_hmac_update(struct crypto_tfm *tfm,
777 struct scatterlist *sg, unsigned int nsg);
778 void crypto_hmac_final(struct crypto_tfm *tfm, u8 *key,
779 unsigned int *keylen, u8 *out);
780 void crypto_hmac(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen,
781 struct scatterlist *sg, unsigned int nsg, u8 *out);
782 #endif /* CONFIG_CRYPTO_HMAC */
784 #endif /* _LINUX_CRYPTO_H */