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;
100 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
102 struct crypto_async_request {
103 struct list_head list;
104 crypto_completion_t complete;
106 struct crypto_tfm *tfm;
111 struct ablkcipher_request {
112 struct crypto_async_request base;
118 struct scatterlist *src;
119 struct scatterlist *dst;
121 void *__ctx[] CRYPTO_MINALIGN_ATTR;
124 struct blkcipher_desc {
125 struct crypto_blkcipher *tfm;
131 struct crypto_tfm *tfm;
132 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
133 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
134 const u8 *src, unsigned int nbytes);
139 struct crypto_hash *tfm;
144 * Algorithms: modular crypto algorithm implementations, managed
145 * via crypto_register_alg() and crypto_unregister_alg().
147 struct ablkcipher_alg {
148 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
149 unsigned int keylen);
150 int (*encrypt)(struct ablkcipher_request *req);
151 int (*decrypt)(struct ablkcipher_request *req);
153 struct crypto_queue *queue;
155 unsigned int min_keysize;
156 unsigned int max_keysize;
160 struct blkcipher_alg {
161 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
162 unsigned int keylen);
163 int (*encrypt)(struct blkcipher_desc *desc,
164 struct scatterlist *dst, struct scatterlist *src,
165 unsigned int nbytes);
166 int (*decrypt)(struct blkcipher_desc *desc,
167 struct scatterlist *dst, struct scatterlist *src,
168 unsigned int nbytes);
170 unsigned int min_keysize;
171 unsigned int max_keysize;
176 unsigned int cia_min_keysize;
177 unsigned int cia_max_keysize;
178 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
179 unsigned int keylen);
180 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
181 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
185 unsigned int dia_digestsize;
186 void (*dia_init)(struct crypto_tfm *tfm);
187 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
189 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
190 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
191 unsigned int keylen);
195 int (*init)(struct hash_desc *desc);
196 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
197 unsigned int nbytes);
198 int (*final)(struct hash_desc *desc, u8 *out);
199 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
200 unsigned int nbytes, u8 *out);
201 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
202 unsigned int keylen);
204 unsigned int digestsize;
207 struct compress_alg {
208 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
209 unsigned int slen, u8 *dst, unsigned int *dlen);
210 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
211 unsigned int slen, u8 *dst, unsigned int *dlen);
214 #define cra_ablkcipher cra_u.ablkcipher
215 #define cra_blkcipher cra_u.blkcipher
216 #define cra_cipher cra_u.cipher
217 #define cra_digest cra_u.digest
218 #define cra_hash cra_u.hash
219 #define cra_compress cra_u.compress
222 struct list_head cra_list;
223 struct list_head cra_users;
226 unsigned int cra_blocksize;
227 unsigned int cra_ctxsize;
228 unsigned int cra_alignmask;
233 char cra_name[CRYPTO_MAX_ALG_NAME];
234 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
236 const struct crypto_type *cra_type;
239 struct ablkcipher_alg ablkcipher;
240 struct blkcipher_alg blkcipher;
241 struct cipher_alg cipher;
242 struct digest_alg digest;
243 struct hash_alg hash;
244 struct compress_alg compress;
247 int (*cra_init)(struct crypto_tfm *tfm);
248 void (*cra_exit)(struct crypto_tfm *tfm);
249 void (*cra_destroy)(struct crypto_alg *alg);
251 struct module *cra_module;
255 * Algorithm registration interface.
257 int crypto_register_alg(struct crypto_alg *alg);
258 int crypto_unregister_alg(struct crypto_alg *alg);
261 * Algorithm query interface.
264 int crypto_has_alg(const char *name, u32 type, u32 mask);
266 static inline int crypto_has_alg(const char *name, u32 type, u32 mask)
273 * Transforms: user-instantiated objects which encapsulate algorithms
274 * and core processing logic. Managed via crypto_alloc_*() and
275 * crypto_free_*(), as well as the various helpers below.
278 struct ablkcipher_tfm {
279 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
280 unsigned int keylen);
281 int (*encrypt)(struct ablkcipher_request *req);
282 int (*decrypt)(struct ablkcipher_request *req);
284 unsigned int reqsize;
287 struct blkcipher_tfm {
289 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
290 unsigned int keylen);
291 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
292 struct scatterlist *src, unsigned int nbytes);
293 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
294 struct scatterlist *src, unsigned int nbytes);
299 unsigned int cit_ivsize;
301 int (*cit_setkey)(struct crypto_tfm *tfm,
302 const u8 *key, unsigned int keylen);
303 int (*cit_encrypt)(struct crypto_tfm *tfm,
304 struct scatterlist *dst,
305 struct scatterlist *src,
306 unsigned int nbytes);
307 int (*cit_encrypt_iv)(struct crypto_tfm *tfm,
308 struct scatterlist *dst,
309 struct scatterlist *src,
310 unsigned int nbytes, u8 *iv);
311 int (*cit_decrypt)(struct crypto_tfm *tfm,
312 struct scatterlist *dst,
313 struct scatterlist *src,
314 unsigned int nbytes);
315 int (*cit_decrypt_iv)(struct crypto_tfm *tfm,
316 struct scatterlist *dst,
317 struct scatterlist *src,
318 unsigned int nbytes, u8 *iv);
319 void (*cit_xor_block)(u8 *dst, const u8 *src);
320 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
321 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
325 int (*init)(struct hash_desc *desc);
326 int (*update)(struct hash_desc *desc,
327 struct scatterlist *sg, unsigned int nsg);
328 int (*final)(struct hash_desc *desc, u8 *out);
329 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
330 unsigned int nsg, u8 *out);
331 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
332 unsigned int keylen);
333 unsigned int digestsize;
336 struct compress_tfm {
337 int (*cot_compress)(struct crypto_tfm *tfm,
338 const u8 *src, unsigned int slen,
339 u8 *dst, unsigned int *dlen);
340 int (*cot_decompress)(struct crypto_tfm *tfm,
341 const u8 *src, unsigned int slen,
342 u8 *dst, unsigned int *dlen);
345 #define crt_ablkcipher crt_u.ablkcipher
346 #define crt_blkcipher crt_u.blkcipher
347 #define crt_cipher crt_u.cipher
348 #define crt_hash crt_u.hash
349 #define crt_compress crt_u.compress
356 struct ablkcipher_tfm ablkcipher;
357 struct blkcipher_tfm blkcipher;
358 struct cipher_tfm cipher;
359 struct hash_tfm hash;
360 struct compress_tfm compress;
363 struct crypto_alg *__crt_alg;
365 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
368 struct crypto_ablkcipher {
369 struct crypto_tfm base;
372 struct crypto_blkcipher {
373 struct crypto_tfm base;
376 struct crypto_cipher {
377 struct crypto_tfm base;
381 struct crypto_tfm base;
385 struct crypto_tfm base;
395 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
397 struct crypto_attr_alg {
398 char name[CRYPTO_MAX_ALG_NAME];
401 struct crypto_attr_type {
407 * Transform user interface.
410 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
411 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
412 void crypto_free_tfm(struct crypto_tfm *tfm);
415 * Transform helpers which query the underlying algorithm.
417 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
419 return tfm->__crt_alg->cra_name;
422 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
424 return tfm->__crt_alg->cra_driver_name;
427 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
429 return tfm->__crt_alg->cra_priority;
432 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
434 return module_name(tfm->__crt_alg->cra_module);
437 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
439 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
442 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
444 return tfm->__crt_alg->cra_blocksize;
447 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
449 return tfm->__crt_alg->cra_alignmask;
452 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
454 return tfm->crt_flags;
457 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
459 tfm->crt_flags |= flags;
462 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
464 tfm->crt_flags &= ~flags;
467 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
469 return tfm->__crt_ctx;
472 static inline unsigned int crypto_tfm_ctx_alignment(void)
474 struct crypto_tfm *tfm;
475 return __alignof__(tfm->__crt_ctx);
481 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
482 struct crypto_tfm *tfm)
484 return (struct crypto_ablkcipher *)tfm;
487 static inline struct crypto_ablkcipher *crypto_alloc_ablkcipher(
488 const char *alg_name, u32 type, u32 mask)
490 type &= ~CRYPTO_ALG_TYPE_MASK;
491 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
492 mask |= CRYPTO_ALG_TYPE_MASK;
494 return __crypto_ablkcipher_cast(
495 crypto_alloc_base(alg_name, type, mask));
498 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
499 struct crypto_ablkcipher *tfm)
504 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
506 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
509 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
512 type &= ~CRYPTO_ALG_TYPE_MASK;
513 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
514 mask |= CRYPTO_ALG_TYPE_MASK;
516 return crypto_has_alg(alg_name, type, mask);
519 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
520 struct crypto_ablkcipher *tfm)
522 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
525 static inline unsigned int crypto_ablkcipher_ivsize(
526 struct crypto_ablkcipher *tfm)
528 return crypto_ablkcipher_crt(tfm)->ivsize;
531 static inline unsigned int crypto_ablkcipher_blocksize(
532 struct crypto_ablkcipher *tfm)
534 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
537 static inline unsigned int crypto_ablkcipher_alignmask(
538 struct crypto_ablkcipher *tfm)
540 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
543 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
545 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
548 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
551 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
554 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
557 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
560 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
561 const u8 *key, unsigned int keylen)
563 return crypto_ablkcipher_crt(tfm)->setkey(tfm, key, keylen);
566 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
567 struct ablkcipher_request *req)
569 return __crypto_ablkcipher_cast(req->base.tfm);
572 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
574 struct ablkcipher_tfm *crt =
575 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
576 return crt->encrypt(req);
579 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
581 struct ablkcipher_tfm *crt =
582 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
583 return crt->decrypt(req);
586 static inline int crypto_ablkcipher_reqsize(struct crypto_ablkcipher *tfm)
588 return crypto_ablkcipher_crt(tfm)->reqsize;
591 static inline struct ablkcipher_request *ablkcipher_request_cast(
592 struct crypto_async_request *req)
594 return container_of(req, struct ablkcipher_request, base);
597 static inline struct ablkcipher_request *ablkcipher_request_alloc(
598 struct crypto_ablkcipher *tfm, gfp_t gfp)
600 struct ablkcipher_request *req;
602 req = kmalloc(sizeof(struct ablkcipher_request) +
603 crypto_ablkcipher_reqsize(tfm), gfp);
606 req->base.tfm = crypto_ablkcipher_tfm(tfm);
611 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
616 static inline void ablkcipher_request_set_callback(
617 struct ablkcipher_request *req,
618 u32 flags, crypto_completion_t complete, void *data)
620 req->base.complete = complete;
621 req->base.data = data;
622 req->base.flags = flags;
625 static inline void ablkcipher_request_set_crypt(
626 struct ablkcipher_request *req,
627 struct scatterlist *src, struct scatterlist *dst,
628 unsigned int nbytes, void *iv)
632 req->nbytes = nbytes;
636 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
637 struct crypto_tfm *tfm)
639 return (struct crypto_blkcipher *)tfm;
642 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
643 struct crypto_tfm *tfm)
645 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
646 return __crypto_blkcipher_cast(tfm);
649 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
650 const char *alg_name, u32 type, u32 mask)
652 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
653 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
654 mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC;
656 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
659 static inline struct crypto_tfm *crypto_blkcipher_tfm(
660 struct crypto_blkcipher *tfm)
665 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
667 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
670 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
672 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC);
673 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
674 mask |= CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC;
676 return crypto_has_alg(alg_name, type, mask);
679 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
681 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
684 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
685 struct crypto_blkcipher *tfm)
687 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
690 static inline struct blkcipher_alg *crypto_blkcipher_alg(
691 struct crypto_blkcipher *tfm)
693 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
696 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
698 return crypto_blkcipher_alg(tfm)->ivsize;
701 static inline unsigned int crypto_blkcipher_blocksize(
702 struct crypto_blkcipher *tfm)
704 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
707 static inline unsigned int crypto_blkcipher_alignmask(
708 struct crypto_blkcipher *tfm)
710 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
713 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
715 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
718 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
721 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
724 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
727 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
730 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
731 const u8 *key, unsigned int keylen)
733 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
737 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
738 struct scatterlist *dst,
739 struct scatterlist *src,
742 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
743 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
746 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
747 struct scatterlist *dst,
748 struct scatterlist *src,
751 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
754 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
755 struct scatterlist *dst,
756 struct scatterlist *src,
759 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
760 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
763 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
764 struct scatterlist *dst,
765 struct scatterlist *src,
768 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
771 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
772 const u8 *src, unsigned int len)
774 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
777 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
778 u8 *dst, unsigned int len)
780 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
783 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
785 return (struct crypto_cipher *)tfm;
788 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
790 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
791 return __crypto_cipher_cast(tfm);
794 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
797 type &= ~CRYPTO_ALG_TYPE_MASK;
798 type |= CRYPTO_ALG_TYPE_CIPHER;
799 mask |= CRYPTO_ALG_TYPE_MASK;
801 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
804 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
809 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
811 crypto_free_tfm(crypto_cipher_tfm(tfm));
814 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
816 type &= ~CRYPTO_ALG_TYPE_MASK;
817 type |= CRYPTO_ALG_TYPE_CIPHER;
818 mask |= CRYPTO_ALG_TYPE_MASK;
820 return crypto_has_alg(alg_name, type, mask);
823 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
825 return &crypto_cipher_tfm(tfm)->crt_cipher;
828 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
830 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
833 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
835 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
838 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
840 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
843 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
846 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
849 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
852 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
855 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
856 const u8 *key, unsigned int keylen)
858 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
862 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
863 u8 *dst, const u8 *src)
865 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
869 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
870 u8 *dst, const u8 *src)
872 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
876 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
878 return (struct crypto_hash *)tfm;
881 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
883 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
884 CRYPTO_ALG_TYPE_HASH_MASK);
885 return __crypto_hash_cast(tfm);
888 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
891 type &= ~CRYPTO_ALG_TYPE_MASK;
892 type |= CRYPTO_ALG_TYPE_HASH;
893 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
895 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
898 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
903 static inline void crypto_free_hash(struct crypto_hash *tfm)
905 crypto_free_tfm(crypto_hash_tfm(tfm));
908 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
910 type &= ~CRYPTO_ALG_TYPE_MASK;
911 type |= CRYPTO_ALG_TYPE_HASH;
912 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
914 return crypto_has_alg(alg_name, type, mask);
917 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
919 return &crypto_hash_tfm(tfm)->crt_hash;
922 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
924 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
927 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
929 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
932 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
934 return crypto_hash_crt(tfm)->digestsize;
937 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
939 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
942 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
944 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
947 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
949 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
952 static inline int crypto_hash_init(struct hash_desc *desc)
954 return crypto_hash_crt(desc->tfm)->init(desc);
957 static inline int crypto_hash_update(struct hash_desc *desc,
958 struct scatterlist *sg,
961 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
964 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
966 return crypto_hash_crt(desc->tfm)->final(desc, out);
969 static inline int crypto_hash_digest(struct hash_desc *desc,
970 struct scatterlist *sg,
971 unsigned int nbytes, u8 *out)
973 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
976 static inline int crypto_hash_setkey(struct crypto_hash *hash,
977 const u8 *key, unsigned int keylen)
979 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
982 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
984 return (struct crypto_comp *)tfm;
987 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
989 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
990 CRYPTO_ALG_TYPE_MASK);
991 return __crypto_comp_cast(tfm);
994 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
997 type &= ~CRYPTO_ALG_TYPE_MASK;
998 type |= CRYPTO_ALG_TYPE_COMPRESS;
999 mask |= CRYPTO_ALG_TYPE_MASK;
1001 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1004 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1009 static inline void crypto_free_comp(struct crypto_comp *tfm)
1011 crypto_free_tfm(crypto_comp_tfm(tfm));
1014 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1016 type &= ~CRYPTO_ALG_TYPE_MASK;
1017 type |= CRYPTO_ALG_TYPE_COMPRESS;
1018 mask |= CRYPTO_ALG_TYPE_MASK;
1020 return crypto_has_alg(alg_name, type, mask);
1023 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1025 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1028 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1030 return &crypto_comp_tfm(tfm)->crt_compress;
1033 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1034 const u8 *src, unsigned int slen,
1035 u8 *dst, unsigned int *dlen)
1037 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1038 src, slen, dst, dlen);
1041 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1042 const u8 *src, unsigned int slen,
1043 u8 *dst, unsigned int *dlen)
1045 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1046 src, slen, dst, dlen);
1049 #endif /* _LINUX_CRYPTO_H */