2 * Scatterlist Cryptographic API.
4 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
5 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
6 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
9 * and Nettle, by Niels Möller.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
17 #ifndef _LINUX_CRYPTO_H
18 #define _LINUX_CRYPTO_H
20 #include <asm/atomic.h>
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/slab.h>
25 #include <linux/string.h>
26 #include <linux/uaccess.h>
29 * Algorithm masks and types.
31 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
32 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
33 #define CRYPTO_ALG_TYPE_DIGEST 0x00000002
34 #define CRYPTO_ALG_TYPE_HASH 0x00000003
35 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
36 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000005
38 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
40 #define CRYPTO_ALG_LARVAL 0x00000010
41 #define CRYPTO_ALG_DEAD 0x00000020
42 #define CRYPTO_ALG_DYING 0x00000040
43 #define CRYPTO_ALG_ASYNC 0x00000080
46 * Set this bit if and only if the algorithm requires another algorithm of
47 * the same type to handle corner cases.
49 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
52 * Transform masks and values (for crt_flags).
54 #define CRYPTO_TFM_REQ_MASK 0x000fff00
55 #define CRYPTO_TFM_RES_MASK 0xfff00000
57 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
58 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
59 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
60 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
61 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
62 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
63 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
64 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
67 * Miscellaneous stuff.
69 #define CRYPTO_MAX_ALG_NAME 64
72 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
73 * declaration) is used to ensure that the crypto_tfm context structure is
74 * aligned correctly for the given architecture so that there are no alignment
75 * faults for C data types. In particular, this is required on platforms such
76 * as arm where pointers are 32-bit aligned but there are data types such as
77 * u64 which require 64-bit alignment.
79 #if defined(ARCH_KMALLOC_MINALIGN)
80 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
81 #elif defined(ARCH_SLAB_MINALIGN)
82 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
85 #ifdef CRYPTO_MINALIGN
86 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
88 #define CRYPTO_MINALIGN_ATTR
92 struct crypto_ablkcipher;
93 struct crypto_async_request;
94 struct crypto_blkcipher;
99 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
101 struct crypto_async_request {
102 struct list_head list;
103 crypto_completion_t complete;
105 struct crypto_tfm *tfm;
110 struct ablkcipher_request {
111 struct crypto_async_request base;
117 struct scatterlist *src;
118 struct scatterlist *dst;
120 void *__ctx[] CRYPTO_MINALIGN_ATTR;
123 struct blkcipher_desc {
124 struct crypto_blkcipher *tfm;
130 struct crypto_tfm *tfm;
131 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
132 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
133 const u8 *src, unsigned int nbytes);
138 struct crypto_hash *tfm;
143 * Algorithms: modular crypto algorithm implementations, managed
144 * via crypto_register_alg() and crypto_unregister_alg().
146 struct blkcipher_alg {
147 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
148 unsigned int keylen);
149 int (*encrypt)(struct blkcipher_desc *desc,
150 struct scatterlist *dst, struct scatterlist *src,
151 unsigned int nbytes);
152 int (*decrypt)(struct blkcipher_desc *desc,
153 struct scatterlist *dst, struct scatterlist *src,
154 unsigned int nbytes);
156 unsigned int min_keysize;
157 unsigned int max_keysize;
162 unsigned int cia_min_keysize;
163 unsigned int cia_max_keysize;
164 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
165 unsigned int keylen);
166 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
167 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
171 unsigned int dia_digestsize;
172 void (*dia_init)(struct crypto_tfm *tfm);
173 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
175 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
176 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
177 unsigned int keylen);
181 int (*init)(struct hash_desc *desc);
182 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
183 unsigned int nbytes);
184 int (*final)(struct hash_desc *desc, u8 *out);
185 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
186 unsigned int nbytes, u8 *out);
187 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
188 unsigned int keylen);
190 unsigned int digestsize;
193 struct compress_alg {
194 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
195 unsigned int slen, u8 *dst, unsigned int *dlen);
196 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
197 unsigned int slen, u8 *dst, unsigned int *dlen);
200 #define cra_blkcipher cra_u.blkcipher
201 #define cra_cipher cra_u.cipher
202 #define cra_digest cra_u.digest
203 #define cra_hash cra_u.hash
204 #define cra_compress cra_u.compress
207 struct list_head cra_list;
208 struct list_head cra_users;
211 unsigned int cra_blocksize;
212 unsigned int cra_ctxsize;
213 unsigned int cra_alignmask;
218 char cra_name[CRYPTO_MAX_ALG_NAME];
219 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
221 const struct crypto_type *cra_type;
224 struct blkcipher_alg blkcipher;
225 struct cipher_alg cipher;
226 struct digest_alg digest;
227 struct hash_alg hash;
228 struct compress_alg compress;
231 int (*cra_init)(struct crypto_tfm *tfm);
232 void (*cra_exit)(struct crypto_tfm *tfm);
233 void (*cra_destroy)(struct crypto_alg *alg);
235 struct module *cra_module;
239 * Algorithm registration interface.
241 int crypto_register_alg(struct crypto_alg *alg);
242 int crypto_unregister_alg(struct crypto_alg *alg);
245 * Algorithm query interface.
248 int crypto_has_alg(const char *name, u32 type, u32 mask);
250 static inline int crypto_has_alg(const char *name, u32 type, u32 mask)
257 * Transforms: user-instantiated objects which encapsulate algorithms
258 * and core processing logic. Managed via crypto_alloc_*() and
259 * crypto_free_*(), as well as the various helpers below.
262 struct ablkcipher_tfm {
263 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
264 unsigned int keylen);
265 int (*encrypt)(struct ablkcipher_request *req);
266 int (*decrypt)(struct ablkcipher_request *req);
268 unsigned int reqsize;
271 struct blkcipher_tfm {
273 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
274 unsigned int keylen);
275 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
276 struct scatterlist *src, unsigned int nbytes);
277 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
278 struct scatterlist *src, unsigned int nbytes);
283 unsigned int cit_ivsize;
285 int (*cit_setkey)(struct crypto_tfm *tfm,
286 const u8 *key, unsigned int keylen);
287 int (*cit_encrypt)(struct crypto_tfm *tfm,
288 struct scatterlist *dst,
289 struct scatterlist *src,
290 unsigned int nbytes);
291 int (*cit_encrypt_iv)(struct crypto_tfm *tfm,
292 struct scatterlist *dst,
293 struct scatterlist *src,
294 unsigned int nbytes, u8 *iv);
295 int (*cit_decrypt)(struct crypto_tfm *tfm,
296 struct scatterlist *dst,
297 struct scatterlist *src,
298 unsigned int nbytes);
299 int (*cit_decrypt_iv)(struct crypto_tfm *tfm,
300 struct scatterlist *dst,
301 struct scatterlist *src,
302 unsigned int nbytes, u8 *iv);
303 void (*cit_xor_block)(u8 *dst, const u8 *src);
304 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
305 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
309 int (*init)(struct hash_desc *desc);
310 int (*update)(struct hash_desc *desc,
311 struct scatterlist *sg, unsigned int nsg);
312 int (*final)(struct hash_desc *desc, u8 *out);
313 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
314 unsigned int nsg, u8 *out);
315 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
316 unsigned int keylen);
317 unsigned int digestsize;
320 struct compress_tfm {
321 int (*cot_compress)(struct crypto_tfm *tfm,
322 const u8 *src, unsigned int slen,
323 u8 *dst, unsigned int *dlen);
324 int (*cot_decompress)(struct crypto_tfm *tfm,
325 const u8 *src, unsigned int slen,
326 u8 *dst, unsigned int *dlen);
329 #define crt_ablkcipher crt_u.ablkcipher
330 #define crt_blkcipher crt_u.blkcipher
331 #define crt_cipher crt_u.cipher
332 #define crt_hash crt_u.hash
333 #define crt_compress crt_u.compress
340 struct ablkcipher_tfm ablkcipher;
341 struct blkcipher_tfm blkcipher;
342 struct cipher_tfm cipher;
343 struct hash_tfm hash;
344 struct compress_tfm compress;
347 struct crypto_alg *__crt_alg;
349 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
352 struct crypto_ablkcipher {
353 struct crypto_tfm base;
356 struct crypto_blkcipher {
357 struct crypto_tfm base;
360 struct crypto_cipher {
361 struct crypto_tfm base;
365 struct crypto_tfm base;
369 struct crypto_tfm base;
377 struct crypto_attr_alg {
378 char name[CRYPTO_MAX_ALG_NAME];
382 * Transform user interface.
385 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
386 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
387 void crypto_free_tfm(struct crypto_tfm *tfm);
390 * Transform helpers which query the underlying algorithm.
392 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
394 return tfm->__crt_alg->cra_name;
397 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
399 return tfm->__crt_alg->cra_driver_name;
402 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
404 return tfm->__crt_alg->cra_priority;
407 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
409 return module_name(tfm->__crt_alg->cra_module);
412 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
414 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
417 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
419 return tfm->__crt_alg->cra_blocksize;
422 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
424 return tfm->__crt_alg->cra_alignmask;
427 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
429 return tfm->crt_flags;
432 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
434 tfm->crt_flags |= flags;
437 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
439 tfm->crt_flags &= ~flags;
442 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
444 return tfm->__crt_ctx;
447 static inline unsigned int crypto_tfm_ctx_alignment(void)
449 struct crypto_tfm *tfm;
450 return __alignof__(tfm->__crt_ctx);
456 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
457 struct crypto_tfm *tfm)
459 return (struct crypto_ablkcipher *)tfm;
462 static inline struct crypto_ablkcipher *crypto_alloc_ablkcipher(
463 const char *alg_name, u32 type, u32 mask)
465 type &= ~CRYPTO_ALG_TYPE_MASK;
466 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
467 mask |= CRYPTO_ALG_TYPE_MASK;
469 return __crypto_ablkcipher_cast(
470 crypto_alloc_base(alg_name, type, mask));
473 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
474 struct crypto_ablkcipher *tfm)
479 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
481 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
484 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
487 type &= ~CRYPTO_ALG_TYPE_MASK;
488 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
489 mask |= CRYPTO_ALG_TYPE_MASK;
491 return crypto_has_alg(alg_name, type, mask);
494 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
495 struct crypto_ablkcipher *tfm)
497 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
500 static inline unsigned int crypto_ablkcipher_ivsize(
501 struct crypto_ablkcipher *tfm)
503 return crypto_ablkcipher_crt(tfm)->ivsize;
506 static inline unsigned int crypto_ablkcipher_blocksize(
507 struct crypto_ablkcipher *tfm)
509 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
512 static inline unsigned int crypto_ablkcipher_alignmask(
513 struct crypto_ablkcipher *tfm)
515 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
518 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
520 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
523 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
526 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
529 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
532 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
535 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
536 const u8 *key, unsigned int keylen)
538 return crypto_ablkcipher_crt(tfm)->setkey(tfm, key, keylen);
541 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
542 struct ablkcipher_request *req)
544 return __crypto_ablkcipher_cast(req->base.tfm);
547 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
549 struct ablkcipher_tfm *crt =
550 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
551 return crt->encrypt(req);
554 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
556 struct ablkcipher_tfm *crt =
557 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
558 return crt->decrypt(req);
561 static inline int crypto_ablkcipher_reqsize(struct crypto_ablkcipher *tfm)
563 return crypto_ablkcipher_crt(tfm)->reqsize;
566 static inline struct ablkcipher_request *ablkcipher_request_alloc(
567 struct crypto_ablkcipher *tfm, gfp_t gfp)
569 struct ablkcipher_request *req;
571 req = kmalloc(sizeof(struct ablkcipher_request) +
572 crypto_ablkcipher_reqsize(tfm), gfp);
575 req->base.tfm = crypto_ablkcipher_tfm(tfm);
580 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
585 static inline void ablkcipher_request_set_callback(
586 struct ablkcipher_request *req,
587 u32 flags, crypto_completion_t complete, void *data)
589 req->base.complete = complete;
590 req->base.data = data;
591 req->base.flags = flags;
594 static inline void ablkcipher_request_set_crypt(
595 struct ablkcipher_request *req,
596 struct scatterlist *src, struct scatterlist *dst,
597 unsigned int nbytes, void *iv)
601 req->nbytes = nbytes;
605 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
606 struct crypto_tfm *tfm)
608 return (struct crypto_blkcipher *)tfm;
611 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
612 struct crypto_tfm *tfm)
614 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
615 return __crypto_blkcipher_cast(tfm);
618 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
619 const char *alg_name, u32 type, u32 mask)
621 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
622 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
623 mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC;
625 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
628 static inline struct crypto_tfm *crypto_blkcipher_tfm(
629 struct crypto_blkcipher *tfm)
634 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
636 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
639 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
641 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
642 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
643 mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC;
645 return crypto_has_alg(alg_name, type, mask);
648 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
650 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
653 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
654 struct crypto_blkcipher *tfm)
656 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
659 static inline struct blkcipher_alg *crypto_blkcipher_alg(
660 struct crypto_blkcipher *tfm)
662 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
665 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
667 return crypto_blkcipher_alg(tfm)->ivsize;
670 static inline unsigned int crypto_blkcipher_blocksize(
671 struct crypto_blkcipher *tfm)
673 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
676 static inline unsigned int crypto_blkcipher_alignmask(
677 struct crypto_blkcipher *tfm)
679 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
682 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
684 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
687 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
690 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
693 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
696 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
699 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
700 const u8 *key, unsigned int keylen)
702 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
706 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
707 struct scatterlist *dst,
708 struct scatterlist *src,
711 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
712 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
715 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
716 struct scatterlist *dst,
717 struct scatterlist *src,
720 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
723 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
724 struct scatterlist *dst,
725 struct scatterlist *src,
728 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
729 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
732 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
733 struct scatterlist *dst,
734 struct scatterlist *src,
737 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
740 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
741 const u8 *src, unsigned int len)
743 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
746 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
747 u8 *dst, unsigned int len)
749 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
752 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
754 return (struct crypto_cipher *)tfm;
757 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
759 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
760 return __crypto_cipher_cast(tfm);
763 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
766 type &= ~CRYPTO_ALG_TYPE_MASK;
767 type |= CRYPTO_ALG_TYPE_CIPHER;
768 mask |= CRYPTO_ALG_TYPE_MASK;
770 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
773 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
778 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
780 crypto_free_tfm(crypto_cipher_tfm(tfm));
783 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
785 type &= ~CRYPTO_ALG_TYPE_MASK;
786 type |= CRYPTO_ALG_TYPE_CIPHER;
787 mask |= CRYPTO_ALG_TYPE_MASK;
789 return crypto_has_alg(alg_name, type, mask);
792 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
794 return &crypto_cipher_tfm(tfm)->crt_cipher;
797 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
799 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
802 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
804 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
807 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
809 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
812 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
815 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
818 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
821 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
824 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
825 const u8 *key, unsigned int keylen)
827 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
831 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
832 u8 *dst, const u8 *src)
834 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
838 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
839 u8 *dst, const u8 *src)
841 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
845 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
847 return (struct crypto_hash *)tfm;
850 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
852 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
853 CRYPTO_ALG_TYPE_HASH_MASK);
854 return __crypto_hash_cast(tfm);
857 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
860 type &= ~CRYPTO_ALG_TYPE_MASK;
861 type |= CRYPTO_ALG_TYPE_HASH;
862 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
864 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
867 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
872 static inline void crypto_free_hash(struct crypto_hash *tfm)
874 crypto_free_tfm(crypto_hash_tfm(tfm));
877 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
879 type &= ~CRYPTO_ALG_TYPE_MASK;
880 type |= CRYPTO_ALG_TYPE_HASH;
881 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
883 return crypto_has_alg(alg_name, type, mask);
886 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
888 return &crypto_hash_tfm(tfm)->crt_hash;
891 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
893 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
896 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
898 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
901 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
903 return crypto_hash_crt(tfm)->digestsize;
906 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
908 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
911 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
913 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
916 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
918 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
921 static inline int crypto_hash_init(struct hash_desc *desc)
923 return crypto_hash_crt(desc->tfm)->init(desc);
926 static inline int crypto_hash_update(struct hash_desc *desc,
927 struct scatterlist *sg,
930 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
933 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
935 return crypto_hash_crt(desc->tfm)->final(desc, out);
938 static inline int crypto_hash_digest(struct hash_desc *desc,
939 struct scatterlist *sg,
940 unsigned int nbytes, u8 *out)
942 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
945 static inline int crypto_hash_setkey(struct crypto_hash *hash,
946 const u8 *key, unsigned int keylen)
948 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
951 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
953 return (struct crypto_comp *)tfm;
956 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
958 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
959 CRYPTO_ALG_TYPE_MASK);
960 return __crypto_comp_cast(tfm);
963 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
966 type &= ~CRYPTO_ALG_TYPE_MASK;
967 type |= CRYPTO_ALG_TYPE_COMPRESS;
968 mask |= CRYPTO_ALG_TYPE_MASK;
970 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
973 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
978 static inline void crypto_free_comp(struct crypto_comp *tfm)
980 crypto_free_tfm(crypto_comp_tfm(tfm));
983 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
985 type &= ~CRYPTO_ALG_TYPE_MASK;
986 type |= CRYPTO_ALG_TYPE_COMPRESS;
987 mask |= CRYPTO_ALG_TYPE_MASK;
989 return crypto_has_alg(alg_name, type, mask);
992 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
994 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
997 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
999 return &crypto_comp_tfm(tfm)->crt_compress;
1002 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1003 const u8 *src, unsigned int slen,
1004 u8 *dst, unsigned int *dlen)
1006 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1007 src, slen, dst, dlen);
1010 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1011 const u8 *src, unsigned int slen,
1012 u8 *dst, unsigned int *dlen)
1014 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1015 src, slen, dst, dlen);
1018 #endif /* _LINUX_CRYPTO_H */