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 * Autoloaded crypto modules should only use a prefixed name to avoid allowing
29 * arbitrary modules to be loaded. Loading from userspace may still need the
30 * unprefixed names, so retains those aliases as well.
31 * This uses __MODULE_INFO directly instead of MODULE_ALIAS because pre-4.3
32 * gcc (e.g. avr32 toolchain) uses __LINE__ for uniqueness, and this macro
33 * expands twice on the same line. Instead, use a separate base name for the
36 #define MODULE_ALIAS_CRYPTO(name) \
37 __MODULE_INFO(alias, alias_userspace, name); \
38 __MODULE_INFO(alias, alias_crypto, "crypto-" name)
41 * Algorithm masks and types.
43 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
44 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
45 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000002
46 #define CRYPTO_ALG_TYPE_AEAD 0x00000003
47 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
48 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
49 #define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
50 #define CRYPTO_ALG_TYPE_DIGEST 0x00000008
51 #define CRYPTO_ALG_TYPE_HASH 0x00000008
52 #define CRYPTO_ALG_TYPE_SHASH 0x00000009
53 #define CRYPTO_ALG_TYPE_AHASH 0x0000000a
54 #define CRYPTO_ALG_TYPE_RNG 0x0000000c
55 #define CRYPTO_ALG_TYPE_PCOMPRESS 0x0000000f
57 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
58 #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
59 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
61 #define CRYPTO_ALG_LARVAL 0x00000010
62 #define CRYPTO_ALG_DEAD 0x00000020
63 #define CRYPTO_ALG_DYING 0x00000040
64 #define CRYPTO_ALG_ASYNC 0x00000080
67 * Set this bit if and only if the algorithm requires another algorithm of
68 * the same type to handle corner cases.
70 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
73 * This bit is set for symmetric key ciphers that have already been wrapped
74 * with a generic IV generator to prevent them from being wrapped again.
76 #define CRYPTO_ALG_GENIV 0x00000200
79 * Set if the algorithm has passed automated run-time testing. Note that
80 * if there is no run-time testing for a given algorithm it is considered
84 #define CRYPTO_ALG_TESTED 0x00000400
87 * Set if the algorithm is an instance that is build from templates.
89 #define CRYPTO_ALG_INSTANCE 0x00000800
92 * Transform masks and values (for crt_flags).
94 #define CRYPTO_TFM_REQ_MASK 0x000fff00
95 #define CRYPTO_TFM_RES_MASK 0xfff00000
97 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
98 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
99 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
100 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
101 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
102 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
103 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
104 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
107 * Miscellaneous stuff.
109 #define CRYPTO_MAX_ALG_NAME 64
112 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
113 * declaration) is used to ensure that the crypto_tfm context structure is
114 * aligned correctly for the given architecture so that there are no alignment
115 * faults for C data types. In particular, this is required on platforms such
116 * as arm where pointers are 32-bit aligned but there are data types such as
117 * u64 which require 64-bit alignment.
119 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
121 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
124 struct crypto_ablkcipher;
125 struct crypto_async_request;
127 struct crypto_blkcipher;
132 struct aead_givcrypt_request;
133 struct skcipher_givcrypt_request;
135 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
137 struct crypto_async_request {
138 struct list_head list;
139 crypto_completion_t complete;
141 struct crypto_tfm *tfm;
146 struct ablkcipher_request {
147 struct crypto_async_request base;
153 struct scatterlist *src;
154 struct scatterlist *dst;
156 void *__ctx[] CRYPTO_MINALIGN_ATTR;
160 * struct aead_request - AEAD request
161 * @base: Common attributes for async crypto requests
162 * @assoclen: Length in bytes of associated data for authentication
163 * @cryptlen: Length of data to be encrypted or decrypted
164 * @iv: Initialisation vector
165 * @assoc: Associated data
167 * @dst: Destination data
168 * @__ctx: Start of private context data
170 struct aead_request {
171 struct crypto_async_request base;
173 unsigned int assoclen;
174 unsigned int cryptlen;
178 struct scatterlist *assoc;
179 struct scatterlist *src;
180 struct scatterlist *dst;
182 void *__ctx[] CRYPTO_MINALIGN_ATTR;
185 struct blkcipher_desc {
186 struct crypto_blkcipher *tfm;
192 struct crypto_tfm *tfm;
193 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
194 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
195 const u8 *src, unsigned int nbytes);
200 struct crypto_hash *tfm;
205 * Algorithms: modular crypto algorithm implementations, managed
206 * via crypto_register_alg() and crypto_unregister_alg().
208 struct ablkcipher_alg {
209 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
210 unsigned int keylen);
211 int (*encrypt)(struct ablkcipher_request *req);
212 int (*decrypt)(struct ablkcipher_request *req);
213 int (*givencrypt)(struct skcipher_givcrypt_request *req);
214 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
218 unsigned int min_keysize;
219 unsigned int max_keysize;
224 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
225 unsigned int keylen);
226 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
227 int (*encrypt)(struct aead_request *req);
228 int (*decrypt)(struct aead_request *req);
229 int (*givencrypt)(struct aead_givcrypt_request *req);
230 int (*givdecrypt)(struct aead_givcrypt_request *req);
235 unsigned int maxauthsize;
238 struct blkcipher_alg {
239 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
240 unsigned int keylen);
241 int (*encrypt)(struct blkcipher_desc *desc,
242 struct scatterlist *dst, struct scatterlist *src,
243 unsigned int nbytes);
244 int (*decrypt)(struct blkcipher_desc *desc,
245 struct scatterlist *dst, struct scatterlist *src,
246 unsigned int nbytes);
250 unsigned int min_keysize;
251 unsigned int max_keysize;
256 unsigned int cia_min_keysize;
257 unsigned int cia_max_keysize;
258 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
259 unsigned int keylen);
260 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
261 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
264 struct compress_alg {
265 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
266 unsigned int slen, u8 *dst, unsigned int *dlen);
267 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
268 unsigned int slen, u8 *dst, unsigned int *dlen);
272 int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
274 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
276 unsigned int seedsize;
280 #define cra_ablkcipher cra_u.ablkcipher
281 #define cra_aead cra_u.aead
282 #define cra_blkcipher cra_u.blkcipher
283 #define cra_cipher cra_u.cipher
284 #define cra_compress cra_u.compress
285 #define cra_rng cra_u.rng
288 struct list_head cra_list;
289 struct list_head cra_users;
292 unsigned int cra_blocksize;
293 unsigned int cra_ctxsize;
294 unsigned int cra_alignmask;
299 char cra_name[CRYPTO_MAX_ALG_NAME];
300 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
302 const struct crypto_type *cra_type;
305 struct ablkcipher_alg ablkcipher;
306 struct aead_alg aead;
307 struct blkcipher_alg blkcipher;
308 struct cipher_alg cipher;
309 struct compress_alg compress;
313 int (*cra_init)(struct crypto_tfm *tfm);
314 void (*cra_exit)(struct crypto_tfm *tfm);
315 void (*cra_destroy)(struct crypto_alg *alg);
317 struct module *cra_module;
321 * Algorithm registration interface.
323 int crypto_register_alg(struct crypto_alg *alg);
324 int crypto_unregister_alg(struct crypto_alg *alg);
327 * Algorithm query interface.
329 int crypto_has_alg(const char *name, u32 type, u32 mask);
332 * Transforms: user-instantiated objects which encapsulate algorithms
333 * and core processing logic. Managed via crypto_alloc_*() and
334 * crypto_free_*(), as well as the various helpers below.
337 struct ablkcipher_tfm {
338 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
339 unsigned int keylen);
340 int (*encrypt)(struct ablkcipher_request *req);
341 int (*decrypt)(struct ablkcipher_request *req);
342 int (*givencrypt)(struct skcipher_givcrypt_request *req);
343 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
345 struct crypto_ablkcipher *base;
348 unsigned int reqsize;
353 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
354 unsigned int keylen);
355 int (*encrypt)(struct aead_request *req);
356 int (*decrypt)(struct aead_request *req);
357 int (*givencrypt)(struct aead_givcrypt_request *req);
358 int (*givdecrypt)(struct aead_givcrypt_request *req);
360 struct crypto_aead *base;
363 unsigned int authsize;
364 unsigned int reqsize;
367 struct blkcipher_tfm {
369 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
370 unsigned int keylen);
371 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
372 struct scatterlist *src, unsigned int nbytes);
373 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
374 struct scatterlist *src, unsigned int nbytes);
378 int (*cit_setkey)(struct crypto_tfm *tfm,
379 const u8 *key, unsigned int keylen);
380 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
381 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
385 int (*init)(struct hash_desc *desc);
386 int (*update)(struct hash_desc *desc,
387 struct scatterlist *sg, unsigned int nsg);
388 int (*final)(struct hash_desc *desc, u8 *out);
389 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
390 unsigned int nsg, u8 *out);
391 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
392 unsigned int keylen);
393 unsigned int digestsize;
396 struct compress_tfm {
397 int (*cot_compress)(struct crypto_tfm *tfm,
398 const u8 *src, unsigned int slen,
399 u8 *dst, unsigned int *dlen);
400 int (*cot_decompress)(struct crypto_tfm *tfm,
401 const u8 *src, unsigned int slen,
402 u8 *dst, unsigned int *dlen);
406 int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
408 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
411 #define crt_ablkcipher crt_u.ablkcipher
412 #define crt_aead crt_u.aead
413 #define crt_blkcipher crt_u.blkcipher
414 #define crt_cipher crt_u.cipher
415 #define crt_hash crt_u.hash
416 #define crt_compress crt_u.compress
417 #define crt_rng crt_u.rng
424 struct ablkcipher_tfm ablkcipher;
425 struct aead_tfm aead;
426 struct blkcipher_tfm blkcipher;
427 struct cipher_tfm cipher;
428 struct hash_tfm hash;
429 struct compress_tfm compress;
433 void (*exit)(struct crypto_tfm *tfm);
435 struct crypto_alg *__crt_alg;
437 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
440 struct crypto_ablkcipher {
441 struct crypto_tfm base;
445 struct crypto_tfm base;
448 struct crypto_blkcipher {
449 struct crypto_tfm base;
452 struct crypto_cipher {
453 struct crypto_tfm base;
457 struct crypto_tfm base;
461 struct crypto_tfm base;
465 struct crypto_tfm base;
476 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
478 /* Maximum number of (rtattr) parameters for each template. */
479 #define CRYPTO_MAX_ATTRS 32
481 struct crypto_attr_alg {
482 char name[CRYPTO_MAX_ALG_NAME];
485 struct crypto_attr_type {
490 struct crypto_attr_u32 {
495 * Transform user interface.
498 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
499 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
501 static inline void crypto_free_tfm(struct crypto_tfm *tfm)
503 return crypto_destroy_tfm(tfm, tfm);
506 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
509 * Transform helpers which query the underlying algorithm.
511 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
513 return tfm->__crt_alg->cra_name;
516 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
518 return tfm->__crt_alg->cra_driver_name;
521 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
523 return tfm->__crt_alg->cra_priority;
526 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
528 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
531 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
533 return tfm->__crt_alg->cra_blocksize;
536 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
538 return tfm->__crt_alg->cra_alignmask;
541 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
543 return tfm->crt_flags;
546 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
548 tfm->crt_flags |= flags;
551 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
553 tfm->crt_flags &= ~flags;
556 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
558 return tfm->__crt_ctx;
561 static inline unsigned int crypto_tfm_ctx_alignment(void)
563 struct crypto_tfm *tfm;
564 return __alignof__(tfm->__crt_ctx);
570 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
571 struct crypto_tfm *tfm)
573 return (struct crypto_ablkcipher *)tfm;
576 static inline u32 crypto_skcipher_type(u32 type)
578 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
579 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
583 static inline u32 crypto_skcipher_mask(u32 mask)
585 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
586 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
590 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
593 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
594 struct crypto_ablkcipher *tfm)
599 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
601 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
604 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
607 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
608 crypto_skcipher_mask(mask));
611 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
612 struct crypto_ablkcipher *tfm)
614 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
617 static inline unsigned int crypto_ablkcipher_ivsize(
618 struct crypto_ablkcipher *tfm)
620 return crypto_ablkcipher_crt(tfm)->ivsize;
623 static inline unsigned int crypto_ablkcipher_blocksize(
624 struct crypto_ablkcipher *tfm)
626 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
629 static inline unsigned int crypto_ablkcipher_alignmask(
630 struct crypto_ablkcipher *tfm)
632 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
635 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
637 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
640 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
643 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
646 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
649 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
652 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
653 const u8 *key, unsigned int keylen)
655 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
657 return crt->setkey(crt->base, key, keylen);
660 static inline bool crypto_ablkcipher_has_setkey(struct crypto_ablkcipher *tfm)
662 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
664 return crt->has_setkey;
667 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
668 struct ablkcipher_request *req)
670 return __crypto_ablkcipher_cast(req->base.tfm);
673 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
675 struct ablkcipher_tfm *crt =
676 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
677 return crt->encrypt(req);
680 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
682 struct ablkcipher_tfm *crt =
683 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
684 return crt->decrypt(req);
687 static inline unsigned int crypto_ablkcipher_reqsize(
688 struct crypto_ablkcipher *tfm)
690 return crypto_ablkcipher_crt(tfm)->reqsize;
693 static inline void ablkcipher_request_set_tfm(
694 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
696 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
699 static inline struct ablkcipher_request *ablkcipher_request_cast(
700 struct crypto_async_request *req)
702 return container_of(req, struct ablkcipher_request, base);
705 static inline struct ablkcipher_request *ablkcipher_request_alloc(
706 struct crypto_ablkcipher *tfm, gfp_t gfp)
708 struct ablkcipher_request *req;
710 req = kmalloc(sizeof(struct ablkcipher_request) +
711 crypto_ablkcipher_reqsize(tfm), gfp);
714 ablkcipher_request_set_tfm(req, tfm);
719 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
724 static inline void ablkcipher_request_set_callback(
725 struct ablkcipher_request *req,
726 u32 flags, crypto_completion_t complete, void *data)
728 req->base.complete = complete;
729 req->base.data = data;
730 req->base.flags = flags;
733 static inline void ablkcipher_request_set_crypt(
734 struct ablkcipher_request *req,
735 struct scatterlist *src, struct scatterlist *dst,
736 unsigned int nbytes, void *iv)
740 req->nbytes = nbytes;
744 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
746 return (struct crypto_aead *)tfm;
749 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
751 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
756 static inline void crypto_free_aead(struct crypto_aead *tfm)
758 crypto_free_tfm(crypto_aead_tfm(tfm));
761 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
763 return &crypto_aead_tfm(tfm)->crt_aead;
766 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
768 return crypto_aead_crt(tfm)->ivsize;
771 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
773 return crypto_aead_crt(tfm)->authsize;
776 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
778 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
781 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
783 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
786 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
788 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
791 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
793 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
796 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
798 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
801 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
804 struct aead_tfm *crt = crypto_aead_crt(tfm);
806 return crt->setkey(crt->base, key, keylen);
809 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
811 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
813 return __crypto_aead_cast(req->base.tfm);
816 static inline int crypto_aead_encrypt(struct aead_request *req)
818 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
821 static inline int crypto_aead_decrypt(struct aead_request *req)
823 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
826 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
828 return crypto_aead_crt(tfm)->reqsize;
831 static inline void aead_request_set_tfm(struct aead_request *req,
832 struct crypto_aead *tfm)
834 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
837 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
840 struct aead_request *req;
842 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
845 aead_request_set_tfm(req, tfm);
850 static inline void aead_request_free(struct aead_request *req)
855 static inline void aead_request_set_callback(struct aead_request *req,
857 crypto_completion_t complete,
860 req->base.complete = complete;
861 req->base.data = data;
862 req->base.flags = flags;
865 static inline void aead_request_set_crypt(struct aead_request *req,
866 struct scatterlist *src,
867 struct scatterlist *dst,
868 unsigned int cryptlen, u8 *iv)
872 req->cryptlen = cryptlen;
876 static inline void aead_request_set_assoc(struct aead_request *req,
877 struct scatterlist *assoc,
878 unsigned int assoclen)
881 req->assoclen = assoclen;
884 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
885 struct crypto_tfm *tfm)
887 return (struct crypto_blkcipher *)tfm;
890 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
891 struct crypto_tfm *tfm)
893 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
894 return __crypto_blkcipher_cast(tfm);
897 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
898 const char *alg_name, u32 type, u32 mask)
900 type &= ~CRYPTO_ALG_TYPE_MASK;
901 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
902 mask |= CRYPTO_ALG_TYPE_MASK;
904 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
907 static inline struct crypto_tfm *crypto_blkcipher_tfm(
908 struct crypto_blkcipher *tfm)
913 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
915 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
918 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
920 type &= ~CRYPTO_ALG_TYPE_MASK;
921 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
922 mask |= CRYPTO_ALG_TYPE_MASK;
924 return crypto_has_alg(alg_name, type, mask);
927 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
929 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
932 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
933 struct crypto_blkcipher *tfm)
935 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
938 static inline struct blkcipher_alg *crypto_blkcipher_alg(
939 struct crypto_blkcipher *tfm)
941 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
944 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
946 return crypto_blkcipher_alg(tfm)->ivsize;
949 static inline unsigned int crypto_blkcipher_blocksize(
950 struct crypto_blkcipher *tfm)
952 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
955 static inline unsigned int crypto_blkcipher_alignmask(
956 struct crypto_blkcipher *tfm)
958 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
961 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
963 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
966 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
969 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
972 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
975 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
978 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
979 const u8 *key, unsigned int keylen)
981 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
985 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
986 struct scatterlist *dst,
987 struct scatterlist *src,
990 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
991 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
994 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
995 struct scatterlist *dst,
996 struct scatterlist *src,
999 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1002 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
1003 struct scatterlist *dst,
1004 struct scatterlist *src,
1005 unsigned int nbytes)
1007 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1008 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1011 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
1012 struct scatterlist *dst,
1013 struct scatterlist *src,
1014 unsigned int nbytes)
1016 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1019 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1020 const u8 *src, unsigned int len)
1022 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1025 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1026 u8 *dst, unsigned int len)
1028 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1031 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1033 return (struct crypto_cipher *)tfm;
1036 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1038 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1039 return __crypto_cipher_cast(tfm);
1042 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1045 type &= ~CRYPTO_ALG_TYPE_MASK;
1046 type |= CRYPTO_ALG_TYPE_CIPHER;
1047 mask |= CRYPTO_ALG_TYPE_MASK;
1049 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1052 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1057 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1059 crypto_free_tfm(crypto_cipher_tfm(tfm));
1062 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1064 type &= ~CRYPTO_ALG_TYPE_MASK;
1065 type |= CRYPTO_ALG_TYPE_CIPHER;
1066 mask |= CRYPTO_ALG_TYPE_MASK;
1068 return crypto_has_alg(alg_name, type, mask);
1071 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1073 return &crypto_cipher_tfm(tfm)->crt_cipher;
1076 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1078 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1081 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1083 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1086 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1088 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1091 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1094 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1097 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1100 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1103 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1104 const u8 *key, unsigned int keylen)
1106 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1110 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1111 u8 *dst, const u8 *src)
1113 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1117 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1118 u8 *dst, const u8 *src)
1120 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1124 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1126 return (struct crypto_hash *)tfm;
1129 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1131 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1132 CRYPTO_ALG_TYPE_HASH_MASK);
1133 return __crypto_hash_cast(tfm);
1136 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1139 type &= ~CRYPTO_ALG_TYPE_MASK;
1140 mask &= ~CRYPTO_ALG_TYPE_MASK;
1141 type |= CRYPTO_ALG_TYPE_HASH;
1142 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1144 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1147 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1152 static inline void crypto_free_hash(struct crypto_hash *tfm)
1154 crypto_free_tfm(crypto_hash_tfm(tfm));
1157 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1159 type &= ~CRYPTO_ALG_TYPE_MASK;
1160 mask &= ~CRYPTO_ALG_TYPE_MASK;
1161 type |= CRYPTO_ALG_TYPE_HASH;
1162 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1164 return crypto_has_alg(alg_name, type, mask);
1167 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1169 return &crypto_hash_tfm(tfm)->crt_hash;
1172 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1174 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1177 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1179 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1182 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1184 return crypto_hash_crt(tfm)->digestsize;
1187 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1189 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1192 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1194 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1197 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1199 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1202 static inline int crypto_hash_init(struct hash_desc *desc)
1204 return crypto_hash_crt(desc->tfm)->init(desc);
1207 static inline int crypto_hash_update(struct hash_desc *desc,
1208 struct scatterlist *sg,
1209 unsigned int nbytes)
1211 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1214 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1216 return crypto_hash_crt(desc->tfm)->final(desc, out);
1219 static inline int crypto_hash_digest(struct hash_desc *desc,
1220 struct scatterlist *sg,
1221 unsigned int nbytes, u8 *out)
1223 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1226 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1227 const u8 *key, unsigned int keylen)
1229 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1232 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1234 return (struct crypto_comp *)tfm;
1237 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1239 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1240 CRYPTO_ALG_TYPE_MASK);
1241 return __crypto_comp_cast(tfm);
1244 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1247 type &= ~CRYPTO_ALG_TYPE_MASK;
1248 type |= CRYPTO_ALG_TYPE_COMPRESS;
1249 mask |= CRYPTO_ALG_TYPE_MASK;
1251 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1254 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1259 static inline void crypto_free_comp(struct crypto_comp *tfm)
1261 crypto_free_tfm(crypto_comp_tfm(tfm));
1264 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1266 type &= ~CRYPTO_ALG_TYPE_MASK;
1267 type |= CRYPTO_ALG_TYPE_COMPRESS;
1268 mask |= CRYPTO_ALG_TYPE_MASK;
1270 return crypto_has_alg(alg_name, type, mask);
1273 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1275 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1278 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1280 return &crypto_comp_tfm(tfm)->crt_compress;
1283 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1284 const u8 *src, unsigned int slen,
1285 u8 *dst, unsigned int *dlen)
1287 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1288 src, slen, dst, dlen);
1291 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1292 const u8 *src, unsigned int slen,
1293 u8 *dst, unsigned int *dlen)
1295 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1296 src, slen, dst, dlen);
1299 #endif /* _LINUX_CRYPTO_H */