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_ABLKCIPHER 0x00000005
37 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
38 #define CRYPTO_ALG_TYPE_AEAD 0x00000009
40 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
41 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
43 #define CRYPTO_ALG_LARVAL 0x00000010
44 #define CRYPTO_ALG_DEAD 0x00000020
45 #define CRYPTO_ALG_DYING 0x00000040
46 #define CRYPTO_ALG_ASYNC 0x00000080
49 * Set this bit if and only if the algorithm requires another algorithm of
50 * the same type to handle corner cases.
52 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
55 * Transform masks and values (for crt_flags).
57 #define CRYPTO_TFM_REQ_MASK 0x000fff00
58 #define CRYPTO_TFM_RES_MASK 0xfff00000
60 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
61 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
62 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
63 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
64 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
65 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
66 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
67 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
70 * Miscellaneous stuff.
72 #define CRYPTO_MAX_ALG_NAME 64
75 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
76 * declaration) is used to ensure that the crypto_tfm context structure is
77 * aligned correctly for the given architecture so that there are no alignment
78 * faults for C data types. In particular, this is required on platforms such
79 * as arm where pointers are 32-bit aligned but there are data types such as
80 * u64 which require 64-bit alignment.
82 #if defined(ARCH_KMALLOC_MINALIGN)
83 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
84 #elif defined(ARCH_SLAB_MINALIGN)
85 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
88 #ifdef CRYPTO_MINALIGN
89 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
91 #define CRYPTO_MINALIGN_ATTR
95 struct crypto_ablkcipher;
96 struct crypto_async_request;
98 struct crypto_blkcipher;
103 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
105 struct crypto_async_request {
106 struct list_head list;
107 crypto_completion_t complete;
109 struct crypto_tfm *tfm;
114 struct ablkcipher_request {
115 struct crypto_async_request base;
121 struct scatterlist *src;
122 struct scatterlist *dst;
124 void *__ctx[] CRYPTO_MINALIGN_ATTR;
128 * struct aead_request - AEAD request
129 * @base: Common attributes for async crypto requests
130 * @assoclen: Length in bytes of associated data for authentication
131 * @cryptlen: Length of data to be encrypted or decrypted
132 * @iv: Initialisation vector
133 * @assoc: Associated data
135 * @dst: Destination data
136 * @__ctx: Start of private context data
138 struct aead_request {
139 struct crypto_async_request base;
141 unsigned int assoclen;
142 unsigned int cryptlen;
146 struct scatterlist *assoc;
147 struct scatterlist *src;
148 struct scatterlist *dst;
150 void *__ctx[] CRYPTO_MINALIGN_ATTR;
153 struct blkcipher_desc {
154 struct crypto_blkcipher *tfm;
160 struct crypto_tfm *tfm;
161 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
162 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
163 const u8 *src, unsigned int nbytes);
168 struct crypto_hash *tfm;
173 * Algorithms: modular crypto algorithm implementations, managed
174 * via crypto_register_alg() and crypto_unregister_alg().
176 struct ablkcipher_alg {
177 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
178 unsigned int keylen);
179 int (*encrypt)(struct ablkcipher_request *req);
180 int (*decrypt)(struct ablkcipher_request *req);
182 unsigned int min_keysize;
183 unsigned int max_keysize;
188 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
189 unsigned int keylen);
190 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
191 int (*encrypt)(struct aead_request *req);
192 int (*decrypt)(struct aead_request *req);
195 unsigned int maxauthsize;
198 struct blkcipher_alg {
199 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
200 unsigned int keylen);
201 int (*encrypt)(struct blkcipher_desc *desc,
202 struct scatterlist *dst, struct scatterlist *src,
203 unsigned int nbytes);
204 int (*decrypt)(struct blkcipher_desc *desc,
205 struct scatterlist *dst, struct scatterlist *src,
206 unsigned int nbytes);
208 unsigned int min_keysize;
209 unsigned int max_keysize;
214 unsigned int cia_min_keysize;
215 unsigned int cia_max_keysize;
216 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
217 unsigned int keylen);
218 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
219 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
223 unsigned int dia_digestsize;
224 void (*dia_init)(struct crypto_tfm *tfm);
225 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
227 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
228 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
229 unsigned int keylen);
233 int (*init)(struct hash_desc *desc);
234 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
235 unsigned int nbytes);
236 int (*final)(struct hash_desc *desc, u8 *out);
237 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
238 unsigned int nbytes, u8 *out);
239 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
240 unsigned int keylen);
242 unsigned int digestsize;
245 struct compress_alg {
246 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
247 unsigned int slen, u8 *dst, unsigned int *dlen);
248 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
249 unsigned int slen, u8 *dst, unsigned int *dlen);
252 #define cra_ablkcipher cra_u.ablkcipher
253 #define cra_aead cra_u.aead
254 #define cra_blkcipher cra_u.blkcipher
255 #define cra_cipher cra_u.cipher
256 #define cra_digest cra_u.digest
257 #define cra_hash cra_u.hash
258 #define cra_compress cra_u.compress
261 struct list_head cra_list;
262 struct list_head cra_users;
265 unsigned int cra_blocksize;
266 unsigned int cra_ctxsize;
267 unsigned int cra_alignmask;
272 char cra_name[CRYPTO_MAX_ALG_NAME];
273 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
275 const struct crypto_type *cra_type;
278 struct ablkcipher_alg ablkcipher;
279 struct aead_alg aead;
280 struct blkcipher_alg blkcipher;
281 struct cipher_alg cipher;
282 struct digest_alg digest;
283 struct hash_alg hash;
284 struct compress_alg compress;
287 int (*cra_init)(struct crypto_tfm *tfm);
288 void (*cra_exit)(struct crypto_tfm *tfm);
289 void (*cra_destroy)(struct crypto_alg *alg);
291 struct module *cra_module;
295 * Algorithm registration interface.
297 int crypto_register_alg(struct crypto_alg *alg);
298 int crypto_unregister_alg(struct crypto_alg *alg);
301 * Algorithm query interface.
304 int crypto_has_alg(const char *name, u32 type, u32 mask);
306 static inline int crypto_has_alg(const char *name, u32 type, u32 mask)
313 * Transforms: user-instantiated objects which encapsulate algorithms
314 * and core processing logic. Managed via crypto_alloc_*() and
315 * crypto_free_*(), as well as the various helpers below.
318 struct ablkcipher_tfm {
319 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
320 unsigned int keylen);
321 int (*encrypt)(struct ablkcipher_request *req);
322 int (*decrypt)(struct ablkcipher_request *req);
324 unsigned int reqsize;
328 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
329 unsigned int keylen);
330 int (*encrypt)(struct aead_request *req);
331 int (*decrypt)(struct aead_request *req);
333 unsigned int authsize;
334 unsigned int reqsize;
337 struct blkcipher_tfm {
339 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
340 unsigned int keylen);
341 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
342 struct scatterlist *src, unsigned int nbytes);
343 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
344 struct scatterlist *src, unsigned int nbytes);
348 int (*cit_setkey)(struct crypto_tfm *tfm,
349 const u8 *key, unsigned int keylen);
350 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
351 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
355 int (*init)(struct hash_desc *desc);
356 int (*update)(struct hash_desc *desc,
357 struct scatterlist *sg, unsigned int nsg);
358 int (*final)(struct hash_desc *desc, u8 *out);
359 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
360 unsigned int nsg, u8 *out);
361 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
362 unsigned int keylen);
363 unsigned int digestsize;
366 struct compress_tfm {
367 int (*cot_compress)(struct crypto_tfm *tfm,
368 const u8 *src, unsigned int slen,
369 u8 *dst, unsigned int *dlen);
370 int (*cot_decompress)(struct crypto_tfm *tfm,
371 const u8 *src, unsigned int slen,
372 u8 *dst, unsigned int *dlen);
375 #define crt_ablkcipher crt_u.ablkcipher
376 #define crt_aead crt_u.aead
377 #define crt_blkcipher crt_u.blkcipher
378 #define crt_cipher crt_u.cipher
379 #define crt_hash crt_u.hash
380 #define crt_compress crt_u.compress
387 struct ablkcipher_tfm ablkcipher;
388 struct aead_tfm aead;
389 struct blkcipher_tfm blkcipher;
390 struct cipher_tfm cipher;
391 struct hash_tfm hash;
392 struct compress_tfm compress;
395 struct crypto_alg *__crt_alg;
397 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
400 struct crypto_ablkcipher {
401 struct crypto_tfm base;
405 struct crypto_tfm base;
408 struct crypto_blkcipher {
409 struct crypto_tfm base;
412 struct crypto_cipher {
413 struct crypto_tfm base;
417 struct crypto_tfm base;
421 struct crypto_tfm base;
432 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
434 /* Maximum number of (rtattr) parameters for each template. */
435 #define CRYPTO_MAX_ATTRS 32
437 struct crypto_attr_alg {
438 char name[CRYPTO_MAX_ALG_NAME];
441 struct crypto_attr_type {
446 struct crypto_attr_u32 {
451 * Transform user interface.
454 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
455 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
456 void crypto_free_tfm(struct crypto_tfm *tfm);
459 * Transform helpers which query the underlying algorithm.
461 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
463 return tfm->__crt_alg->cra_name;
466 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
468 return tfm->__crt_alg->cra_driver_name;
471 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
473 return tfm->__crt_alg->cra_priority;
476 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
478 return module_name(tfm->__crt_alg->cra_module);
481 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
483 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
486 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
488 return tfm->__crt_alg->cra_blocksize;
491 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
493 return tfm->__crt_alg->cra_alignmask;
496 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
498 return tfm->crt_flags;
501 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
503 tfm->crt_flags |= flags;
506 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
508 tfm->crt_flags &= ~flags;
511 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
513 return tfm->__crt_ctx;
516 static inline unsigned int crypto_tfm_ctx_alignment(void)
518 struct crypto_tfm *tfm;
519 return __alignof__(tfm->__crt_ctx);
525 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
526 struct crypto_tfm *tfm)
528 return (struct crypto_ablkcipher *)tfm;
531 static inline struct crypto_ablkcipher *crypto_alloc_ablkcipher(
532 const char *alg_name, u32 type, u32 mask)
534 type &= ~CRYPTO_ALG_TYPE_MASK;
535 mask &= ~CRYPTO_ALG_TYPE_MASK;
536 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
537 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
539 return __crypto_ablkcipher_cast(
540 crypto_alloc_base(alg_name, type, mask));
543 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
544 struct crypto_ablkcipher *tfm)
549 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
551 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
554 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
557 type &= ~CRYPTO_ALG_TYPE_MASK;
558 mask &= ~CRYPTO_ALG_TYPE_MASK;
559 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
560 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
562 return crypto_has_alg(alg_name, type, mask);
565 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
566 struct crypto_ablkcipher *tfm)
568 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
571 static inline unsigned int crypto_ablkcipher_ivsize(
572 struct crypto_ablkcipher *tfm)
574 return crypto_ablkcipher_crt(tfm)->ivsize;
577 static inline unsigned int crypto_ablkcipher_blocksize(
578 struct crypto_ablkcipher *tfm)
580 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
583 static inline unsigned int crypto_ablkcipher_alignmask(
584 struct crypto_ablkcipher *tfm)
586 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
589 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
591 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
594 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
597 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
600 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
603 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
606 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
607 const u8 *key, unsigned int keylen)
609 return crypto_ablkcipher_crt(tfm)->setkey(tfm, key, keylen);
612 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
613 struct ablkcipher_request *req)
615 return __crypto_ablkcipher_cast(req->base.tfm);
618 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
620 struct ablkcipher_tfm *crt =
621 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
622 return crt->encrypt(req);
625 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
627 struct ablkcipher_tfm *crt =
628 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
629 return crt->decrypt(req);
632 static inline unsigned int crypto_ablkcipher_reqsize(
633 struct crypto_ablkcipher *tfm)
635 return crypto_ablkcipher_crt(tfm)->reqsize;
638 static inline void ablkcipher_request_set_tfm(
639 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
641 req->base.tfm = crypto_ablkcipher_tfm(tfm);
644 static inline struct ablkcipher_request *ablkcipher_request_cast(
645 struct crypto_async_request *req)
647 return container_of(req, struct ablkcipher_request, base);
650 static inline struct ablkcipher_request *ablkcipher_request_alloc(
651 struct crypto_ablkcipher *tfm, gfp_t gfp)
653 struct ablkcipher_request *req;
655 req = kmalloc(sizeof(struct ablkcipher_request) +
656 crypto_ablkcipher_reqsize(tfm), gfp);
659 ablkcipher_request_set_tfm(req, tfm);
664 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
669 static inline void ablkcipher_request_set_callback(
670 struct ablkcipher_request *req,
671 u32 flags, crypto_completion_t complete, void *data)
673 req->base.complete = complete;
674 req->base.data = data;
675 req->base.flags = flags;
678 static inline void ablkcipher_request_set_crypt(
679 struct ablkcipher_request *req,
680 struct scatterlist *src, struct scatterlist *dst,
681 unsigned int nbytes, void *iv)
685 req->nbytes = nbytes;
689 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
691 return (struct crypto_aead *)tfm;
694 static inline struct crypto_aead *crypto_alloc_aead(const char *alg_name,
697 type &= ~CRYPTO_ALG_TYPE_MASK;
698 type |= CRYPTO_ALG_TYPE_AEAD;
699 mask |= CRYPTO_ALG_TYPE_MASK;
701 return __crypto_aead_cast(crypto_alloc_base(alg_name, type, mask));
704 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
709 static inline void crypto_free_aead(struct crypto_aead *tfm)
711 crypto_free_tfm(crypto_aead_tfm(tfm));
714 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
716 return &crypto_aead_tfm(tfm)->crt_aead;
719 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
721 return crypto_aead_crt(tfm)->ivsize;
724 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
726 return crypto_aead_crt(tfm)->authsize;
729 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
731 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
734 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
736 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
739 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
741 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
744 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
746 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
749 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
751 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
754 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
757 return crypto_aead_crt(tfm)->setkey(tfm, key, keylen);
760 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
762 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
764 return __crypto_aead_cast(req->base.tfm);
767 static inline int crypto_aead_encrypt(struct aead_request *req)
769 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
772 static inline int crypto_aead_decrypt(struct aead_request *req)
774 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
777 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
779 return crypto_aead_crt(tfm)->reqsize;
782 static inline void aead_request_set_tfm(struct aead_request *req,
783 struct crypto_aead *tfm)
785 req->base.tfm = crypto_aead_tfm(tfm);
788 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
791 struct aead_request *req;
793 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
796 aead_request_set_tfm(req, tfm);
801 static inline void aead_request_free(struct aead_request *req)
806 static inline void aead_request_set_callback(struct aead_request *req,
808 crypto_completion_t complete,
811 req->base.complete = complete;
812 req->base.data = data;
813 req->base.flags = flags;
816 static inline void aead_request_set_crypt(struct aead_request *req,
817 struct scatterlist *src,
818 struct scatterlist *dst,
819 unsigned int cryptlen, u8 *iv)
823 req->cryptlen = cryptlen;
827 static inline void aead_request_set_assoc(struct aead_request *req,
828 struct scatterlist *assoc,
829 unsigned int assoclen)
832 req->assoclen = assoclen;
835 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
836 struct crypto_tfm *tfm)
838 return (struct crypto_blkcipher *)tfm;
841 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
842 struct crypto_tfm *tfm)
844 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
845 return __crypto_blkcipher_cast(tfm);
848 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
849 const char *alg_name, u32 type, u32 mask)
851 type &= ~CRYPTO_ALG_TYPE_MASK;
852 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
853 mask |= CRYPTO_ALG_TYPE_MASK;
855 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
858 static inline struct crypto_tfm *crypto_blkcipher_tfm(
859 struct crypto_blkcipher *tfm)
864 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
866 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
869 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
871 type &= ~CRYPTO_ALG_TYPE_MASK;
872 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
873 mask |= CRYPTO_ALG_TYPE_MASK;
875 return crypto_has_alg(alg_name, type, mask);
878 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
880 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
883 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
884 struct crypto_blkcipher *tfm)
886 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
889 static inline struct blkcipher_alg *crypto_blkcipher_alg(
890 struct crypto_blkcipher *tfm)
892 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
895 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
897 return crypto_blkcipher_alg(tfm)->ivsize;
900 static inline unsigned int crypto_blkcipher_blocksize(
901 struct crypto_blkcipher *tfm)
903 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
906 static inline unsigned int crypto_blkcipher_alignmask(
907 struct crypto_blkcipher *tfm)
909 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
912 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
914 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
917 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
920 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
923 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
926 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
929 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
930 const u8 *key, unsigned int keylen)
932 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
936 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
937 struct scatterlist *dst,
938 struct scatterlist *src,
941 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
942 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
945 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
946 struct scatterlist *dst,
947 struct scatterlist *src,
950 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
953 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
954 struct scatterlist *dst,
955 struct scatterlist *src,
958 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
959 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
962 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
963 struct scatterlist *dst,
964 struct scatterlist *src,
967 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
970 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
971 const u8 *src, unsigned int len)
973 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
976 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
977 u8 *dst, unsigned int len)
979 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
982 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
984 return (struct crypto_cipher *)tfm;
987 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
989 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
990 return __crypto_cipher_cast(tfm);
993 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
996 type &= ~CRYPTO_ALG_TYPE_MASK;
997 type |= CRYPTO_ALG_TYPE_CIPHER;
998 mask |= CRYPTO_ALG_TYPE_MASK;
1000 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1003 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1008 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1010 crypto_free_tfm(crypto_cipher_tfm(tfm));
1013 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1015 type &= ~CRYPTO_ALG_TYPE_MASK;
1016 type |= CRYPTO_ALG_TYPE_CIPHER;
1017 mask |= CRYPTO_ALG_TYPE_MASK;
1019 return crypto_has_alg(alg_name, type, mask);
1022 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1024 return &crypto_cipher_tfm(tfm)->crt_cipher;
1027 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1029 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1032 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1034 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1037 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1039 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1042 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1045 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1048 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1051 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1054 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1055 const u8 *key, unsigned int keylen)
1057 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1061 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1062 u8 *dst, const u8 *src)
1064 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1068 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1069 u8 *dst, const u8 *src)
1071 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1075 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1077 return (struct crypto_hash *)tfm;
1080 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1082 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1083 CRYPTO_ALG_TYPE_HASH_MASK);
1084 return __crypto_hash_cast(tfm);
1087 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1090 type &= ~CRYPTO_ALG_TYPE_MASK;
1091 mask &= ~CRYPTO_ALG_TYPE_MASK;
1092 type |= CRYPTO_ALG_TYPE_HASH;
1093 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1095 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1098 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1103 static inline void crypto_free_hash(struct crypto_hash *tfm)
1105 crypto_free_tfm(crypto_hash_tfm(tfm));
1108 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1110 type &= ~CRYPTO_ALG_TYPE_MASK;
1111 mask &= ~CRYPTO_ALG_TYPE_MASK;
1112 type |= CRYPTO_ALG_TYPE_HASH;
1113 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1115 return crypto_has_alg(alg_name, type, mask);
1118 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1120 return &crypto_hash_tfm(tfm)->crt_hash;
1123 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1125 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1128 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1130 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1133 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1135 return crypto_hash_crt(tfm)->digestsize;
1138 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1140 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1143 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1145 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1148 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1150 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1153 static inline int crypto_hash_init(struct hash_desc *desc)
1155 return crypto_hash_crt(desc->tfm)->init(desc);
1158 static inline int crypto_hash_update(struct hash_desc *desc,
1159 struct scatterlist *sg,
1160 unsigned int nbytes)
1162 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1165 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1167 return crypto_hash_crt(desc->tfm)->final(desc, out);
1170 static inline int crypto_hash_digest(struct hash_desc *desc,
1171 struct scatterlist *sg,
1172 unsigned int nbytes, u8 *out)
1174 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1177 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1178 const u8 *key, unsigned int keylen)
1180 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1183 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1185 return (struct crypto_comp *)tfm;
1188 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1190 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1191 CRYPTO_ALG_TYPE_MASK);
1192 return __crypto_comp_cast(tfm);
1195 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1198 type &= ~CRYPTO_ALG_TYPE_MASK;
1199 type |= CRYPTO_ALG_TYPE_COMPRESS;
1200 mask |= CRYPTO_ALG_TYPE_MASK;
1202 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1205 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1210 static inline void crypto_free_comp(struct crypto_comp *tfm)
1212 crypto_free_tfm(crypto_comp_tfm(tfm));
1215 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1217 type &= ~CRYPTO_ALG_TYPE_MASK;
1218 type |= CRYPTO_ALG_TYPE_COMPRESS;
1219 mask |= CRYPTO_ALG_TYPE_MASK;
1221 return crypto_has_alg(alg_name, type, mask);
1224 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1226 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1229 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1231 return &crypto_comp_tfm(tfm)->crt_compress;
1234 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1235 const u8 *src, unsigned int slen,
1236 u8 *dst, unsigned int *dlen)
1238 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1239 src, slen, dst, dlen);
1242 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1243 const u8 *src, unsigned int slen,
1244 u8 *dst, unsigned int *dlen)
1246 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1247 src, slen, dst, dlen);
1250 #endif /* _LINUX_CRYPTO_H */