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 <linux/atomic.h>
21 #include <linux/kernel.h>
22 #include <linux/list.h>
23 #include <linux/slab.h>
24 #include <linux/string.h>
25 #include <linux/uaccess.h>
28 * Algorithm masks and types.
30 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
31 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
32 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000002
33 #define CRYPTO_ALG_TYPE_AEAD 0x00000003
34 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
35 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
36 #define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
37 #define CRYPTO_ALG_TYPE_DIGEST 0x00000008
38 #define CRYPTO_ALG_TYPE_HASH 0x00000008
39 #define CRYPTO_ALG_TYPE_SHASH 0x00000009
40 #define CRYPTO_ALG_TYPE_AHASH 0x0000000a
41 #define CRYPTO_ALG_TYPE_RNG 0x0000000c
42 #define CRYPTO_ALG_TYPE_PCOMPRESS 0x0000000f
44 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
45 #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
46 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
48 #define CRYPTO_ALG_LARVAL 0x00000010
49 #define CRYPTO_ALG_DEAD 0x00000020
50 #define CRYPTO_ALG_DYING 0x00000040
51 #define CRYPTO_ALG_ASYNC 0x00000080
54 * Set this bit if and only if the algorithm requires another algorithm of
55 * the same type to handle corner cases.
57 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
60 * This bit is set for symmetric key ciphers that have already been wrapped
61 * with a generic IV generator to prevent them from being wrapped again.
63 #define CRYPTO_ALG_GENIV 0x00000200
66 * Set if the algorithm has passed automated run-time testing. Note that
67 * if there is no run-time testing for a given algorithm it is considered
71 #define CRYPTO_ALG_TESTED 0x00000400
74 * Set if the algorithm is an instance that is build from templates.
76 #define CRYPTO_ALG_INSTANCE 0x00000800
79 * Transform masks and values (for crt_flags).
81 #define CRYPTO_TFM_REQ_MASK 0x000fff00
82 #define CRYPTO_TFM_RES_MASK 0xfff00000
84 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
85 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
86 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
87 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
88 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
89 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
90 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
91 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
94 * Miscellaneous stuff.
96 #define CRYPTO_MAX_ALG_NAME 64
99 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
100 * declaration) is used to ensure that the crypto_tfm context structure is
101 * aligned correctly for the given architecture so that there are no alignment
102 * faults for C data types. In particular, this is required on platforms such
103 * as arm where pointers are 32-bit aligned but there are data types such as
104 * u64 which require 64-bit alignment.
106 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
108 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
111 struct crypto_ablkcipher;
112 struct crypto_async_request;
114 struct crypto_blkcipher;
119 struct aead_givcrypt_request;
120 struct skcipher_givcrypt_request;
122 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
124 struct crypto_async_request {
125 struct list_head list;
126 crypto_completion_t complete;
128 struct crypto_tfm *tfm;
133 struct ablkcipher_request {
134 struct crypto_async_request base;
140 struct scatterlist *src;
141 struct scatterlist *dst;
143 void *__ctx[] CRYPTO_MINALIGN_ATTR;
147 * struct aead_request - AEAD request
148 * @base: Common attributes for async crypto requests
149 * @assoclen: Length in bytes of associated data for authentication
150 * @cryptlen: Length of data to be encrypted or decrypted
151 * @iv: Initialisation vector
152 * @assoc: Associated data
154 * @dst: Destination data
155 * @__ctx: Start of private context data
157 struct aead_request {
158 struct crypto_async_request base;
160 unsigned int assoclen;
161 unsigned int cryptlen;
165 struct scatterlist *assoc;
166 struct scatterlist *src;
167 struct scatterlist *dst;
169 void *__ctx[] CRYPTO_MINALIGN_ATTR;
172 struct blkcipher_desc {
173 struct crypto_blkcipher *tfm;
179 struct crypto_tfm *tfm;
180 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
181 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
182 const u8 *src, unsigned int nbytes);
187 struct crypto_hash *tfm;
192 * Algorithms: modular crypto algorithm implementations, managed
193 * via crypto_register_alg() and crypto_unregister_alg().
195 struct ablkcipher_alg {
196 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
197 unsigned int keylen);
198 int (*encrypt)(struct ablkcipher_request *req);
199 int (*decrypt)(struct ablkcipher_request *req);
200 int (*givencrypt)(struct skcipher_givcrypt_request *req);
201 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
205 unsigned int min_keysize;
206 unsigned int max_keysize;
211 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
212 unsigned int keylen);
213 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
214 int (*encrypt)(struct aead_request *req);
215 int (*decrypt)(struct aead_request *req);
216 int (*givencrypt)(struct aead_givcrypt_request *req);
217 int (*givdecrypt)(struct aead_givcrypt_request *req);
222 unsigned int maxauthsize;
225 struct blkcipher_alg {
226 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
227 unsigned int keylen);
228 int (*encrypt)(struct blkcipher_desc *desc,
229 struct scatterlist *dst, struct scatterlist *src,
230 unsigned int nbytes);
231 int (*decrypt)(struct blkcipher_desc *desc,
232 struct scatterlist *dst, struct scatterlist *src,
233 unsigned int nbytes);
237 unsigned int min_keysize;
238 unsigned int max_keysize;
243 unsigned int cia_min_keysize;
244 unsigned int cia_max_keysize;
245 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
246 unsigned int keylen);
247 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
248 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
251 struct compress_alg {
252 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
253 unsigned int slen, u8 *dst, unsigned int *dlen);
254 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
255 unsigned int slen, u8 *dst, unsigned int *dlen);
259 int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
261 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
263 unsigned int seedsize;
267 #define cra_ablkcipher cra_u.ablkcipher
268 #define cra_aead cra_u.aead
269 #define cra_blkcipher cra_u.blkcipher
270 #define cra_cipher cra_u.cipher
271 #define cra_compress cra_u.compress
272 #define cra_rng cra_u.rng
275 struct list_head cra_list;
276 struct list_head cra_users;
279 unsigned int cra_blocksize;
280 unsigned int cra_ctxsize;
281 unsigned int cra_alignmask;
286 char cra_name[CRYPTO_MAX_ALG_NAME];
287 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
289 const struct crypto_type *cra_type;
292 struct ablkcipher_alg ablkcipher;
293 struct aead_alg aead;
294 struct blkcipher_alg blkcipher;
295 struct cipher_alg cipher;
296 struct compress_alg compress;
300 int (*cra_init)(struct crypto_tfm *tfm);
301 void (*cra_exit)(struct crypto_tfm *tfm);
302 void (*cra_destroy)(struct crypto_alg *alg);
304 struct module *cra_module;
308 * Algorithm registration interface.
310 int crypto_register_alg(struct crypto_alg *alg);
311 int crypto_unregister_alg(struct crypto_alg *alg);
314 * Algorithm query interface.
316 int crypto_has_alg(const char *name, u32 type, u32 mask);
319 * Transforms: user-instantiated objects which encapsulate algorithms
320 * and core processing logic. Managed via crypto_alloc_*() and
321 * crypto_free_*(), as well as the various helpers below.
324 struct ablkcipher_tfm {
325 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
326 unsigned int keylen);
327 int (*encrypt)(struct ablkcipher_request *req);
328 int (*decrypt)(struct ablkcipher_request *req);
329 int (*givencrypt)(struct skcipher_givcrypt_request *req);
330 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
332 struct crypto_ablkcipher *base;
335 unsigned int reqsize;
339 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
340 unsigned int keylen);
341 int (*encrypt)(struct aead_request *req);
342 int (*decrypt)(struct aead_request *req);
343 int (*givencrypt)(struct aead_givcrypt_request *req);
344 int (*givdecrypt)(struct aead_givcrypt_request *req);
346 struct crypto_aead *base;
349 unsigned int authsize;
350 unsigned int reqsize;
353 struct blkcipher_tfm {
355 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
356 unsigned int keylen);
357 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
358 struct scatterlist *src, unsigned int nbytes);
359 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
360 struct scatterlist *src, unsigned int nbytes);
364 int (*cit_setkey)(struct crypto_tfm *tfm,
365 const u8 *key, unsigned int keylen);
366 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
367 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
371 int (*init)(struct hash_desc *desc);
372 int (*update)(struct hash_desc *desc,
373 struct scatterlist *sg, unsigned int nsg);
374 int (*final)(struct hash_desc *desc, u8 *out);
375 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
376 unsigned int nsg, u8 *out);
377 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
378 unsigned int keylen);
379 unsigned int digestsize;
382 struct compress_tfm {
383 int (*cot_compress)(struct crypto_tfm *tfm,
384 const u8 *src, unsigned int slen,
385 u8 *dst, unsigned int *dlen);
386 int (*cot_decompress)(struct crypto_tfm *tfm,
387 const u8 *src, unsigned int slen,
388 u8 *dst, unsigned int *dlen);
392 int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
394 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
397 #define crt_ablkcipher crt_u.ablkcipher
398 #define crt_aead crt_u.aead
399 #define crt_blkcipher crt_u.blkcipher
400 #define crt_cipher crt_u.cipher
401 #define crt_hash crt_u.hash
402 #define crt_compress crt_u.compress
403 #define crt_rng crt_u.rng
410 struct ablkcipher_tfm ablkcipher;
411 struct aead_tfm aead;
412 struct blkcipher_tfm blkcipher;
413 struct cipher_tfm cipher;
414 struct hash_tfm hash;
415 struct compress_tfm compress;
419 void (*exit)(struct crypto_tfm *tfm);
421 struct crypto_alg *__crt_alg;
423 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
426 struct crypto_ablkcipher {
427 struct crypto_tfm base;
431 struct crypto_tfm base;
434 struct crypto_blkcipher {
435 struct crypto_tfm base;
438 struct crypto_cipher {
439 struct crypto_tfm base;
443 struct crypto_tfm base;
447 struct crypto_tfm base;
451 struct crypto_tfm base;
462 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
464 /* Maximum number of (rtattr) parameters for each template. */
465 #define CRYPTO_MAX_ATTRS 32
467 struct crypto_attr_alg {
468 char name[CRYPTO_MAX_ALG_NAME];
471 struct crypto_attr_type {
476 struct crypto_attr_u32 {
481 * Transform user interface.
484 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
485 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
487 static inline void crypto_free_tfm(struct crypto_tfm *tfm)
489 return crypto_destroy_tfm(tfm, tfm);
492 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
495 * Transform helpers which query the underlying algorithm.
497 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
499 return tfm->__crt_alg->cra_name;
502 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
504 return tfm->__crt_alg->cra_driver_name;
507 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
509 return tfm->__crt_alg->cra_priority;
512 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
514 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
517 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
519 return tfm->__crt_alg->cra_blocksize;
522 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
524 return tfm->__crt_alg->cra_alignmask;
527 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
529 return tfm->crt_flags;
532 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
534 tfm->crt_flags |= flags;
537 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
539 tfm->crt_flags &= ~flags;
542 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
544 return tfm->__crt_ctx;
547 static inline unsigned int crypto_tfm_ctx_alignment(void)
549 struct crypto_tfm *tfm;
550 return __alignof__(tfm->__crt_ctx);
556 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
557 struct crypto_tfm *tfm)
559 return (struct crypto_ablkcipher *)tfm;
562 static inline u32 crypto_skcipher_type(u32 type)
564 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
565 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
569 static inline u32 crypto_skcipher_mask(u32 mask)
571 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
572 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
576 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
579 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
580 struct crypto_ablkcipher *tfm)
585 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
587 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
590 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
593 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
594 crypto_skcipher_mask(mask));
597 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
598 struct crypto_ablkcipher *tfm)
600 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
603 static inline unsigned int crypto_ablkcipher_ivsize(
604 struct crypto_ablkcipher *tfm)
606 return crypto_ablkcipher_crt(tfm)->ivsize;
609 static inline unsigned int crypto_ablkcipher_blocksize(
610 struct crypto_ablkcipher *tfm)
612 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
615 static inline unsigned int crypto_ablkcipher_alignmask(
616 struct crypto_ablkcipher *tfm)
618 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
621 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
623 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
626 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
629 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
632 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
635 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
638 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
639 const u8 *key, unsigned int keylen)
641 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
643 return crt->setkey(crt->base, key, keylen);
646 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
647 struct ablkcipher_request *req)
649 return __crypto_ablkcipher_cast(req->base.tfm);
652 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
654 struct ablkcipher_tfm *crt =
655 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
656 return crt->encrypt(req);
659 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
661 struct ablkcipher_tfm *crt =
662 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
663 return crt->decrypt(req);
666 static inline unsigned int crypto_ablkcipher_reqsize(
667 struct crypto_ablkcipher *tfm)
669 return crypto_ablkcipher_crt(tfm)->reqsize;
672 static inline void ablkcipher_request_set_tfm(
673 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
675 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
678 static inline struct ablkcipher_request *ablkcipher_request_cast(
679 struct crypto_async_request *req)
681 return container_of(req, struct ablkcipher_request, base);
684 static inline struct ablkcipher_request *ablkcipher_request_alloc(
685 struct crypto_ablkcipher *tfm, gfp_t gfp)
687 struct ablkcipher_request *req;
689 req = kmalloc(sizeof(struct ablkcipher_request) +
690 crypto_ablkcipher_reqsize(tfm), gfp);
693 ablkcipher_request_set_tfm(req, tfm);
698 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
703 static inline void ablkcipher_request_set_callback(
704 struct ablkcipher_request *req,
705 u32 flags, crypto_completion_t complete, void *data)
707 req->base.complete = complete;
708 req->base.data = data;
709 req->base.flags = flags;
712 static inline void ablkcipher_request_set_crypt(
713 struct ablkcipher_request *req,
714 struct scatterlist *src, struct scatterlist *dst,
715 unsigned int nbytes, void *iv)
719 req->nbytes = nbytes;
723 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
725 return (struct crypto_aead *)tfm;
728 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
730 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
735 static inline void crypto_free_aead(struct crypto_aead *tfm)
737 crypto_free_tfm(crypto_aead_tfm(tfm));
740 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
742 return &crypto_aead_tfm(tfm)->crt_aead;
745 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
747 return crypto_aead_crt(tfm)->ivsize;
750 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
752 return crypto_aead_crt(tfm)->authsize;
755 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
757 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
760 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
762 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
765 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
767 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
770 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
772 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
775 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
777 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
780 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
783 struct aead_tfm *crt = crypto_aead_crt(tfm);
785 return crt->setkey(crt->base, key, keylen);
788 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
790 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
792 return __crypto_aead_cast(req->base.tfm);
795 static inline int crypto_aead_encrypt(struct aead_request *req)
797 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
800 static inline int crypto_aead_decrypt(struct aead_request *req)
802 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
805 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
807 return crypto_aead_crt(tfm)->reqsize;
810 static inline void aead_request_set_tfm(struct aead_request *req,
811 struct crypto_aead *tfm)
813 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
816 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
819 struct aead_request *req;
821 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
824 aead_request_set_tfm(req, tfm);
829 static inline void aead_request_free(struct aead_request *req)
834 static inline void aead_request_set_callback(struct aead_request *req,
836 crypto_completion_t complete,
839 req->base.complete = complete;
840 req->base.data = data;
841 req->base.flags = flags;
844 static inline void aead_request_set_crypt(struct aead_request *req,
845 struct scatterlist *src,
846 struct scatterlist *dst,
847 unsigned int cryptlen, u8 *iv)
851 req->cryptlen = cryptlen;
855 static inline void aead_request_set_assoc(struct aead_request *req,
856 struct scatterlist *assoc,
857 unsigned int assoclen)
860 req->assoclen = assoclen;
863 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
864 struct crypto_tfm *tfm)
866 return (struct crypto_blkcipher *)tfm;
869 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
870 struct crypto_tfm *tfm)
872 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
873 return __crypto_blkcipher_cast(tfm);
876 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
877 const char *alg_name, u32 type, u32 mask)
879 type &= ~CRYPTO_ALG_TYPE_MASK;
880 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
881 mask |= CRYPTO_ALG_TYPE_MASK;
883 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
886 static inline struct crypto_tfm *crypto_blkcipher_tfm(
887 struct crypto_blkcipher *tfm)
892 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
894 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
897 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
899 type &= ~CRYPTO_ALG_TYPE_MASK;
900 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
901 mask |= CRYPTO_ALG_TYPE_MASK;
903 return crypto_has_alg(alg_name, type, mask);
906 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
908 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
911 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
912 struct crypto_blkcipher *tfm)
914 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
917 static inline struct blkcipher_alg *crypto_blkcipher_alg(
918 struct crypto_blkcipher *tfm)
920 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
923 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
925 return crypto_blkcipher_alg(tfm)->ivsize;
928 static inline unsigned int crypto_blkcipher_blocksize(
929 struct crypto_blkcipher *tfm)
931 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
934 static inline unsigned int crypto_blkcipher_alignmask(
935 struct crypto_blkcipher *tfm)
937 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
940 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
942 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
945 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
948 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
951 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
954 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
957 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
958 const u8 *key, unsigned int keylen)
960 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
964 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
965 struct scatterlist *dst,
966 struct scatterlist *src,
969 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
970 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
973 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
974 struct scatterlist *dst,
975 struct scatterlist *src,
978 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
981 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
982 struct scatterlist *dst,
983 struct scatterlist *src,
986 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
987 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
990 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
991 struct scatterlist *dst,
992 struct scatterlist *src,
995 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
998 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
999 const u8 *src, unsigned int len)
1001 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1004 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1005 u8 *dst, unsigned int len)
1007 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1010 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1012 return (struct crypto_cipher *)tfm;
1015 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1017 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1018 return __crypto_cipher_cast(tfm);
1021 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1024 type &= ~CRYPTO_ALG_TYPE_MASK;
1025 type |= CRYPTO_ALG_TYPE_CIPHER;
1026 mask |= CRYPTO_ALG_TYPE_MASK;
1028 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1031 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1036 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1038 crypto_free_tfm(crypto_cipher_tfm(tfm));
1041 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1043 type &= ~CRYPTO_ALG_TYPE_MASK;
1044 type |= CRYPTO_ALG_TYPE_CIPHER;
1045 mask |= CRYPTO_ALG_TYPE_MASK;
1047 return crypto_has_alg(alg_name, type, mask);
1050 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1052 return &crypto_cipher_tfm(tfm)->crt_cipher;
1055 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1057 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1060 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1062 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1065 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1067 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1070 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1073 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1076 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1079 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1082 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1083 const u8 *key, unsigned int keylen)
1085 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1089 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1090 u8 *dst, const u8 *src)
1092 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1096 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1097 u8 *dst, const u8 *src)
1099 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1103 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1105 return (struct crypto_hash *)tfm;
1108 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1110 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1111 CRYPTO_ALG_TYPE_HASH_MASK);
1112 return __crypto_hash_cast(tfm);
1115 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1118 type &= ~CRYPTO_ALG_TYPE_MASK;
1119 mask &= ~CRYPTO_ALG_TYPE_MASK;
1120 type |= CRYPTO_ALG_TYPE_HASH;
1121 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1123 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1126 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1131 static inline void crypto_free_hash(struct crypto_hash *tfm)
1133 crypto_free_tfm(crypto_hash_tfm(tfm));
1136 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1138 type &= ~CRYPTO_ALG_TYPE_MASK;
1139 mask &= ~CRYPTO_ALG_TYPE_MASK;
1140 type |= CRYPTO_ALG_TYPE_HASH;
1141 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1143 return crypto_has_alg(alg_name, type, mask);
1146 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1148 return &crypto_hash_tfm(tfm)->crt_hash;
1151 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1153 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1156 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1158 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1161 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1163 return crypto_hash_crt(tfm)->digestsize;
1166 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1168 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1171 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1173 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1176 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1178 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1181 static inline int crypto_hash_init(struct hash_desc *desc)
1183 return crypto_hash_crt(desc->tfm)->init(desc);
1186 static inline int crypto_hash_update(struct hash_desc *desc,
1187 struct scatterlist *sg,
1188 unsigned int nbytes)
1190 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1193 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1195 return crypto_hash_crt(desc->tfm)->final(desc, out);
1198 static inline int crypto_hash_digest(struct hash_desc *desc,
1199 struct scatterlist *sg,
1200 unsigned int nbytes, u8 *out)
1202 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1205 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1206 const u8 *key, unsigned int keylen)
1208 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1211 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1213 return (struct crypto_comp *)tfm;
1216 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1218 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1219 CRYPTO_ALG_TYPE_MASK);
1220 return __crypto_comp_cast(tfm);
1223 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1226 type &= ~CRYPTO_ALG_TYPE_MASK;
1227 type |= CRYPTO_ALG_TYPE_COMPRESS;
1228 mask |= CRYPTO_ALG_TYPE_MASK;
1230 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1233 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1238 static inline void crypto_free_comp(struct crypto_comp *tfm)
1240 crypto_free_tfm(crypto_comp_tfm(tfm));
1243 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1245 type &= ~CRYPTO_ALG_TYPE_MASK;
1246 type |= CRYPTO_ALG_TYPE_COMPRESS;
1247 mask |= CRYPTO_ALG_TYPE_MASK;
1249 return crypto_has_alg(alg_name, type, mask);
1252 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1254 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1257 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1259 return &crypto_comp_tfm(tfm)->crt_compress;
1262 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1263 const u8 *src, unsigned int slen,
1264 u8 *dst, unsigned int *dlen)
1266 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1267 src, slen, dst, dlen);
1270 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1271 const u8 *src, unsigned int slen,
1272 u8 *dst, unsigned int *dlen)
1274 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1275 src, slen, dst, dlen);
1278 #endif /* _LINUX_CRYPTO_H */