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 void (*update_kernel)(struct hash_desc *desc,
305 const void *data, size_t count);
306 int (*final)(struct hash_desc *desc, u8 *out);
307 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
308 unsigned int nsg, u8 *out);
309 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
310 unsigned int keylen);
311 unsigned int digestsize;
314 struct compress_tfm {
315 int (*cot_compress)(struct crypto_tfm *tfm,
316 const u8 *src, unsigned int slen,
317 u8 *dst, unsigned int *dlen);
318 int (*cot_decompress)(struct crypto_tfm *tfm,
319 const u8 *src, unsigned int slen,
320 u8 *dst, unsigned int *dlen);
323 #define crt_blkcipher crt_u.blkcipher
324 #define crt_cipher crt_u.cipher
325 #define crt_hash crt_u.hash
326 #define crt_compress crt_u.compress
333 struct blkcipher_tfm blkcipher;
334 struct cipher_tfm cipher;
335 struct hash_tfm hash;
336 struct compress_tfm compress;
339 struct crypto_alg *__crt_alg;
341 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
344 #define crypto_cipher crypto_tfm
345 #define crypto_comp crypto_tfm
347 struct crypto_blkcipher {
348 struct crypto_tfm base;
352 struct crypto_tfm base;
360 struct crypto_attr_alg {
361 char name[CRYPTO_MAX_ALG_NAME];
365 * Transform user interface.
368 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
369 struct crypto_tfm *crypto_alloc_tfm2(const char *alg_name, u32 tfm_flags,
371 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
372 void crypto_free_tfm(struct crypto_tfm *tfm);
375 * Transform helpers which query the underlying algorithm.
377 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
379 return tfm->__crt_alg->cra_name;
382 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
384 return tfm->__crt_alg->cra_driver_name;
387 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
389 return tfm->__crt_alg->cra_priority;
392 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
394 return module_name(tfm->__crt_alg->cra_module);
397 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
399 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
402 static unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
404 static inline unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
406 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
407 return tfm->__crt_alg->cra_cipher.cia_min_keysize;
410 static unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm *tfm)
412 static inline unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm *tfm)
414 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
415 return tfm->__crt_alg->cra_cipher.cia_max_keysize;
418 static unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm *tfm) __deprecated;
419 static inline unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm *tfm)
421 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
422 return tfm->crt_cipher.cit_ivsize;
425 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
427 return tfm->__crt_alg->cra_blocksize;
430 static inline unsigned int crypto_tfm_alg_digestsize(struct crypto_tfm *tfm)
432 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
433 return tfm->__crt_alg->cra_digest.dia_digestsize;
436 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
438 return tfm->__crt_alg->cra_alignmask;
441 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
443 return tfm->crt_flags;
446 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
448 tfm->crt_flags |= flags;
451 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
453 tfm->crt_flags &= ~flags;
456 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
458 return tfm->__crt_ctx;
461 static inline unsigned int crypto_tfm_ctx_alignment(void)
463 struct crypto_tfm *tfm;
464 return __alignof__(tfm->__crt_ctx);
470 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
471 struct crypto_tfm *tfm)
473 return (struct crypto_blkcipher *)tfm;
476 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
477 struct crypto_tfm *tfm)
479 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
480 return __crypto_blkcipher_cast(tfm);
483 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
484 const char *alg_name, u32 type, u32 mask)
486 type &= ~CRYPTO_ALG_TYPE_MASK;
487 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
488 mask |= CRYPTO_ALG_TYPE_MASK;
490 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
493 static inline struct crypto_tfm *crypto_blkcipher_tfm(
494 struct crypto_blkcipher *tfm)
499 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
501 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
504 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
506 type &= ~CRYPTO_ALG_TYPE_MASK;
507 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
508 mask |= CRYPTO_ALG_TYPE_MASK;
510 return crypto_has_alg(alg_name, type, mask);
513 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
515 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
518 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
519 struct crypto_blkcipher *tfm)
521 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
524 static inline struct blkcipher_alg *crypto_blkcipher_alg(
525 struct crypto_blkcipher *tfm)
527 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
530 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
532 return crypto_blkcipher_alg(tfm)->ivsize;
535 static inline unsigned int crypto_blkcipher_blocksize(
536 struct crypto_blkcipher *tfm)
538 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
541 static inline unsigned int crypto_blkcipher_alignmask(
542 struct crypto_blkcipher *tfm)
544 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
547 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
549 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
552 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
555 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
558 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
561 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
564 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
565 const u8 *key, unsigned int keylen)
567 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
571 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
572 struct scatterlist *dst,
573 struct scatterlist *src,
576 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
577 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
580 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
581 struct scatterlist *dst,
582 struct scatterlist *src,
585 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
588 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
589 struct scatterlist *dst,
590 struct scatterlist *src,
593 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
594 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
597 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
598 struct scatterlist *dst,
599 struct scatterlist *src,
602 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
605 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
606 const u8 *src, unsigned int len)
608 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
611 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
612 u8 *dst, unsigned int len)
614 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
617 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
619 return (struct crypto_cipher *)tfm;
622 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
624 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
625 return __crypto_cipher_cast(tfm);
628 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
631 type &= ~CRYPTO_ALG_TYPE_MASK;
632 type |= CRYPTO_ALG_TYPE_CIPHER;
633 mask |= CRYPTO_ALG_TYPE_MASK;
635 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
638 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
643 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
645 crypto_free_tfm(crypto_cipher_tfm(tfm));
648 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
650 type &= ~CRYPTO_ALG_TYPE_MASK;
651 type |= CRYPTO_ALG_TYPE_CIPHER;
652 mask |= CRYPTO_ALG_TYPE_MASK;
654 return crypto_has_alg(alg_name, type, mask);
657 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
659 return &crypto_cipher_tfm(tfm)->crt_cipher;
662 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
664 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
667 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
669 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
672 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
674 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
677 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
680 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
683 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
686 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
689 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
690 const u8 *key, unsigned int keylen)
692 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
696 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
697 u8 *dst, const u8 *src)
699 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
703 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
704 u8 *dst, const u8 *src)
706 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
710 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
712 return (struct crypto_hash *)tfm;
715 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
717 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
718 CRYPTO_ALG_TYPE_HASH_MASK);
719 return __crypto_hash_cast(tfm);
722 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
725 type &= ~CRYPTO_ALG_TYPE_MASK;
726 type |= CRYPTO_ALG_TYPE_HASH;
727 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
729 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
732 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
737 static inline void crypto_free_hash(struct crypto_hash *tfm)
739 crypto_free_tfm(crypto_hash_tfm(tfm));
742 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
744 type &= ~CRYPTO_ALG_TYPE_MASK;
745 type |= CRYPTO_ALG_TYPE_HASH;
746 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
748 return crypto_has_alg(alg_name, type, mask);
751 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
753 return &crypto_hash_tfm(tfm)->crt_hash;
756 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
758 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
761 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
763 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
766 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
768 return crypto_hash_crt(tfm)->digestsize;
771 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
773 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
776 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
778 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
781 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
783 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
786 static inline int crypto_hash_init(struct hash_desc *desc)
788 return crypto_hash_crt(desc->tfm)->init(desc);
791 static inline int crypto_hash_update(struct hash_desc *desc,
792 struct scatterlist *sg,
795 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
798 static inline void crypto_hash_update_kernel(struct hash_desc *desc,
802 return crypto_hash_crt(desc->tfm)->update_kernel(desc, data, count);
805 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
807 return crypto_hash_crt(desc->tfm)->final(desc, out);
810 static inline int crypto_hash_digest(struct hash_desc *desc,
811 struct scatterlist *sg,
812 unsigned int nbytes, u8 *out)
814 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
817 static inline int crypto_hash_setkey(struct crypto_hash *hash,
818 const u8 *key, unsigned int keylen)
820 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
823 static int crypto_cipher_encrypt(struct crypto_tfm *tfm,
824 struct scatterlist *dst,
825 struct scatterlist *src,
826 unsigned int nbytes) __deprecated;
827 static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm,
828 struct scatterlist *dst,
829 struct scatterlist *src,
832 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
833 return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes);
836 static int crypto_cipher_encrypt_iv(struct crypto_tfm *tfm,
837 struct scatterlist *dst,
838 struct scatterlist *src,
839 unsigned int nbytes, u8 *iv) __deprecated;
840 static inline int crypto_cipher_encrypt_iv(struct crypto_tfm *tfm,
841 struct scatterlist *dst,
842 struct scatterlist *src,
843 unsigned int nbytes, u8 *iv)
845 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
846 return tfm->crt_cipher.cit_encrypt_iv(tfm, dst, src, nbytes, iv);
849 static int crypto_cipher_decrypt(struct crypto_tfm *tfm,
850 struct scatterlist *dst,
851 struct scatterlist *src,
852 unsigned int nbytes) __deprecated;
853 static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm,
854 struct scatterlist *dst,
855 struct scatterlist *src,
858 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
859 return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes);
862 static int crypto_cipher_decrypt_iv(struct crypto_tfm *tfm,
863 struct scatterlist *dst,
864 struct scatterlist *src,
865 unsigned int nbytes, u8 *iv) __deprecated;
866 static inline int crypto_cipher_decrypt_iv(struct crypto_tfm *tfm,
867 struct scatterlist *dst,
868 struct scatterlist *src,
869 unsigned int nbytes, u8 *iv)
871 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
872 return tfm->crt_cipher.cit_decrypt_iv(tfm, dst, src, nbytes, iv);
875 static void crypto_cipher_set_iv(struct crypto_tfm *tfm,
876 const u8 *src, unsigned int len) __deprecated;
877 static inline void crypto_cipher_set_iv(struct crypto_tfm *tfm,
878 const u8 *src, unsigned int len)
880 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
881 memcpy(tfm->crt_cipher.cit_iv, src, len);
884 static void crypto_cipher_get_iv(struct crypto_tfm *tfm,
885 u8 *dst, unsigned int len) __deprecated;
886 static inline void crypto_cipher_get_iv(struct crypto_tfm *tfm,
887 u8 *dst, unsigned int len)
889 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
890 memcpy(dst, tfm->crt_cipher.cit_iv, len);
893 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
895 return (struct crypto_comp *)tfm;
898 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
900 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
901 CRYPTO_ALG_TYPE_MASK);
902 return __crypto_comp_cast(tfm);
905 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
908 type &= ~CRYPTO_ALG_TYPE_MASK;
909 type |= CRYPTO_ALG_TYPE_COMPRESS;
910 mask |= CRYPTO_ALG_TYPE_MASK;
912 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
915 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
920 static inline void crypto_free_comp(struct crypto_comp *tfm)
922 crypto_free_tfm(crypto_comp_tfm(tfm));
925 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
927 type &= ~CRYPTO_ALG_TYPE_MASK;
928 type |= CRYPTO_ALG_TYPE_COMPRESS;
929 mask |= CRYPTO_ALG_TYPE_MASK;
931 return crypto_has_alg(alg_name, type, mask);
934 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
936 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
939 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
941 return &crypto_comp_tfm(tfm)->crt_compress;
944 static inline int crypto_comp_compress(struct crypto_comp *tfm,
945 const u8 *src, unsigned int slen,
946 u8 *dst, unsigned int *dlen)
948 return crypto_comp_crt(tfm)->cot_compress(tfm, src, slen, dst, dlen);
951 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
952 const u8 *src, unsigned int slen,
953 u8 *dst, unsigned int *dlen)
955 return crypto_comp_crt(tfm)->cot_decompress(tfm, src, slen, dst, dlen);
958 #endif /* _LINUX_CRYPTO_H */