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_COMPRESS 0x00000002
34 #define CRYPTO_ALG_TYPE_AEAD 0x00000003
35 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
36 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
37 #define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006
38 #define CRYPTO_ALG_TYPE_DIGEST 0x00000008
39 #define CRYPTO_ALG_TYPE_HASH 0x00000009
40 #define CRYPTO_ALG_TYPE_AHASH 0x0000000a
42 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
43 #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000c
44 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
46 #define CRYPTO_ALG_LARVAL 0x00000010
47 #define CRYPTO_ALG_DEAD 0x00000020
48 #define CRYPTO_ALG_DYING 0x00000040
49 #define CRYPTO_ALG_ASYNC 0x00000080
52 * Set this bit if and only if the algorithm requires another algorithm of
53 * the same type to handle corner cases.
55 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
58 * This bit is set for symmetric key ciphers that have already been wrapped
59 * with a generic IV generator to prevent them from being wrapped again.
61 #define CRYPTO_ALG_GENIV 0x00000200
64 * Transform masks and values (for crt_flags).
66 #define CRYPTO_TFM_REQ_MASK 0x000fff00
67 #define CRYPTO_TFM_RES_MASK 0xfff00000
69 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
70 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
71 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
72 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
73 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
74 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
75 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
76 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
79 * Miscellaneous stuff.
81 #define CRYPTO_MAX_ALG_NAME 64
84 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
85 * declaration) is used to ensure that the crypto_tfm context structure is
86 * aligned correctly for the given architecture so that there are no alignment
87 * faults for C data types. In particular, this is required on platforms such
88 * as arm where pointers are 32-bit aligned but there are data types such as
89 * u64 which require 64-bit alignment.
91 #if defined(ARCH_KMALLOC_MINALIGN)
92 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
93 #elif defined(ARCH_SLAB_MINALIGN)
94 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
96 #define CRYPTO_MINALIGN __alignof__(unsigned long long)
99 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
102 struct crypto_ablkcipher;
103 struct crypto_async_request;
105 struct crypto_blkcipher;
110 struct aead_givcrypt_request;
111 struct skcipher_givcrypt_request;
113 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
115 struct crypto_async_request {
116 struct list_head list;
117 crypto_completion_t complete;
119 struct crypto_tfm *tfm;
124 struct ablkcipher_request {
125 struct crypto_async_request base;
131 struct scatterlist *src;
132 struct scatterlist *dst;
134 void *__ctx[] CRYPTO_MINALIGN_ATTR;
137 struct ahash_request {
138 struct crypto_async_request base;
141 struct scatterlist *src;
144 void *__ctx[] CRYPTO_MINALIGN_ATTR;
148 * struct aead_request - AEAD request
149 * @base: Common attributes for async crypto requests
150 * @assoclen: Length in bytes of associated data for authentication
151 * @cryptlen: Length of data to be encrypted or decrypted
152 * @iv: Initialisation vector
153 * @assoc: Associated data
155 * @dst: Destination data
156 * @__ctx: Start of private context data
158 struct aead_request {
159 struct crypto_async_request base;
161 unsigned int assoclen;
162 unsigned int cryptlen;
166 struct scatterlist *assoc;
167 struct scatterlist *src;
168 struct scatterlist *dst;
170 void *__ctx[] CRYPTO_MINALIGN_ATTR;
173 struct blkcipher_desc {
174 struct crypto_blkcipher *tfm;
180 struct crypto_tfm *tfm;
181 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
182 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
183 const u8 *src, unsigned int nbytes);
188 struct crypto_hash *tfm;
193 * Algorithms: modular crypto algorithm implementations, managed
194 * via crypto_register_alg() and crypto_unregister_alg().
196 struct ablkcipher_alg {
197 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
198 unsigned int keylen);
199 int (*encrypt)(struct ablkcipher_request *req);
200 int (*decrypt)(struct ablkcipher_request *req);
201 int (*givencrypt)(struct skcipher_givcrypt_request *req);
202 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
206 unsigned int min_keysize;
207 unsigned int max_keysize;
212 int (*init)(struct ahash_request *req);
213 int (*update)(struct ahash_request *req);
214 int (*final)(struct ahash_request *req);
215 int (*digest)(struct ahash_request *req);
216 int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
217 unsigned int keylen);
219 unsigned int digestsize;
223 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
224 unsigned int keylen);
225 int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
226 int (*encrypt)(struct aead_request *req);
227 int (*decrypt)(struct aead_request *req);
228 int (*givencrypt)(struct aead_givcrypt_request *req);
229 int (*givdecrypt)(struct aead_givcrypt_request *req);
234 unsigned int maxauthsize;
237 struct blkcipher_alg {
238 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
239 unsigned int keylen);
240 int (*encrypt)(struct blkcipher_desc *desc,
241 struct scatterlist *dst, struct scatterlist *src,
242 unsigned int nbytes);
243 int (*decrypt)(struct blkcipher_desc *desc,
244 struct scatterlist *dst, struct scatterlist *src,
245 unsigned int nbytes);
249 unsigned int min_keysize;
250 unsigned int max_keysize;
255 unsigned int cia_min_keysize;
256 unsigned int cia_max_keysize;
257 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
258 unsigned int keylen);
259 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
260 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
264 unsigned int dia_digestsize;
265 void (*dia_init)(struct crypto_tfm *tfm);
266 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
268 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
269 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
270 unsigned int keylen);
274 int (*init)(struct hash_desc *desc);
275 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
276 unsigned int nbytes);
277 int (*final)(struct hash_desc *desc, u8 *out);
278 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
279 unsigned int nbytes, u8 *out);
280 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
281 unsigned int keylen);
283 unsigned int digestsize;
286 struct compress_alg {
287 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
288 unsigned int slen, u8 *dst, unsigned int *dlen);
289 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
290 unsigned int slen, u8 *dst, unsigned int *dlen);
293 #define cra_ablkcipher cra_u.ablkcipher
294 #define cra_aead cra_u.aead
295 #define cra_blkcipher cra_u.blkcipher
296 #define cra_cipher cra_u.cipher
297 #define cra_digest cra_u.digest
298 #define cra_hash cra_u.hash
299 #define cra_ahash cra_u.ahash
300 #define cra_compress cra_u.compress
303 struct list_head cra_list;
304 struct list_head cra_users;
307 unsigned int cra_blocksize;
308 unsigned int cra_ctxsize;
309 unsigned int cra_alignmask;
314 char cra_name[CRYPTO_MAX_ALG_NAME];
315 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
317 const struct crypto_type *cra_type;
320 struct ablkcipher_alg ablkcipher;
321 struct aead_alg aead;
322 struct blkcipher_alg blkcipher;
323 struct cipher_alg cipher;
324 struct digest_alg digest;
325 struct hash_alg hash;
326 struct ahash_alg ahash;
327 struct compress_alg compress;
330 int (*cra_init)(struct crypto_tfm *tfm);
331 void (*cra_exit)(struct crypto_tfm *tfm);
332 void (*cra_destroy)(struct crypto_alg *alg);
334 struct module *cra_module;
338 * Algorithm registration interface.
340 int crypto_register_alg(struct crypto_alg *alg);
341 int crypto_unregister_alg(struct crypto_alg *alg);
344 * Algorithm query interface.
346 int crypto_has_alg(const char *name, u32 type, u32 mask);
349 * Transforms: user-instantiated objects which encapsulate algorithms
350 * and core processing logic. Managed via crypto_alloc_*() and
351 * crypto_free_*(), as well as the various helpers below.
354 struct ablkcipher_tfm {
355 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
356 unsigned int keylen);
357 int (*encrypt)(struct ablkcipher_request *req);
358 int (*decrypt)(struct ablkcipher_request *req);
359 int (*givencrypt)(struct skcipher_givcrypt_request *req);
360 int (*givdecrypt)(struct skcipher_givcrypt_request *req);
362 struct crypto_ablkcipher *base;
365 unsigned int reqsize;
369 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
370 unsigned int keylen);
371 int (*encrypt)(struct aead_request *req);
372 int (*decrypt)(struct aead_request *req);
373 int (*givencrypt)(struct aead_givcrypt_request *req);
374 int (*givdecrypt)(struct aead_givcrypt_request *req);
376 struct crypto_aead *base;
379 unsigned int authsize;
380 unsigned int reqsize;
383 struct blkcipher_tfm {
385 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
386 unsigned int keylen);
387 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
388 struct scatterlist *src, unsigned int nbytes);
389 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
390 struct scatterlist *src, unsigned int nbytes);
394 int (*cit_setkey)(struct crypto_tfm *tfm,
395 const u8 *key, unsigned int keylen);
396 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
397 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
401 int (*init)(struct hash_desc *desc);
402 int (*update)(struct hash_desc *desc,
403 struct scatterlist *sg, unsigned int nsg);
404 int (*final)(struct hash_desc *desc, u8 *out);
405 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
406 unsigned int nsg, u8 *out);
407 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
408 unsigned int keylen);
409 unsigned int digestsize;
413 int (*init)(struct ahash_request *req);
414 int (*update)(struct ahash_request *req);
415 int (*final)(struct ahash_request *req);
416 int (*digest)(struct ahash_request *req);
417 int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
418 unsigned int keylen);
420 unsigned int digestsize;
421 unsigned int reqsize;
424 struct compress_tfm {
425 int (*cot_compress)(struct crypto_tfm *tfm,
426 const u8 *src, unsigned int slen,
427 u8 *dst, unsigned int *dlen);
428 int (*cot_decompress)(struct crypto_tfm *tfm,
429 const u8 *src, unsigned int slen,
430 u8 *dst, unsigned int *dlen);
433 #define crt_ablkcipher crt_u.ablkcipher
434 #define crt_aead crt_u.aead
435 #define crt_blkcipher crt_u.blkcipher
436 #define crt_cipher crt_u.cipher
437 #define crt_hash crt_u.hash
438 #define crt_ahash crt_u.ahash
439 #define crt_compress crt_u.compress
446 struct ablkcipher_tfm ablkcipher;
447 struct aead_tfm aead;
448 struct blkcipher_tfm blkcipher;
449 struct cipher_tfm cipher;
450 struct hash_tfm hash;
451 struct ahash_tfm ahash;
452 struct compress_tfm compress;
455 struct crypto_alg *__crt_alg;
457 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
460 struct crypto_ablkcipher {
461 struct crypto_tfm base;
465 struct crypto_tfm base;
468 struct crypto_blkcipher {
469 struct crypto_tfm base;
472 struct crypto_cipher {
473 struct crypto_tfm base;
477 struct crypto_tfm base;
481 struct crypto_tfm base;
484 struct crypto_ahash {
485 struct crypto_tfm base;
496 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
498 /* Maximum number of (rtattr) parameters for each template. */
499 #define CRYPTO_MAX_ATTRS 32
501 struct crypto_attr_alg {
502 char name[CRYPTO_MAX_ALG_NAME];
505 struct crypto_attr_type {
510 struct crypto_attr_u32 {
515 * Transform user interface.
518 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
519 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
520 void crypto_free_tfm(struct crypto_tfm *tfm);
523 * Transform helpers which query the underlying algorithm.
525 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
527 return tfm->__crt_alg->cra_name;
530 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
532 return tfm->__crt_alg->cra_driver_name;
535 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
537 return tfm->__crt_alg->cra_priority;
540 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
542 return module_name(tfm->__crt_alg->cra_module);
545 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
547 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
550 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
552 return tfm->__crt_alg->cra_blocksize;
555 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
557 return tfm->__crt_alg->cra_alignmask;
560 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
562 return tfm->crt_flags;
565 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
567 tfm->crt_flags |= flags;
570 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
572 tfm->crt_flags &= ~flags;
575 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
577 return tfm->__crt_ctx;
580 static inline unsigned int crypto_tfm_ctx_alignment(void)
582 struct crypto_tfm *tfm;
583 return __alignof__(tfm->__crt_ctx);
589 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
590 struct crypto_tfm *tfm)
592 return (struct crypto_ablkcipher *)tfm;
595 static inline u32 crypto_skcipher_type(u32 type)
597 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
598 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
602 static inline u32 crypto_skcipher_mask(u32 mask)
604 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
605 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
609 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
612 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
613 struct crypto_ablkcipher *tfm)
618 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
620 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
623 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
626 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
627 crypto_skcipher_mask(mask));
630 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
631 struct crypto_ablkcipher *tfm)
633 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
636 static inline unsigned int crypto_ablkcipher_ivsize(
637 struct crypto_ablkcipher *tfm)
639 return crypto_ablkcipher_crt(tfm)->ivsize;
642 static inline unsigned int crypto_ablkcipher_blocksize(
643 struct crypto_ablkcipher *tfm)
645 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
648 static inline unsigned int crypto_ablkcipher_alignmask(
649 struct crypto_ablkcipher *tfm)
651 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
654 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
656 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
659 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
662 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
665 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
668 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
671 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
672 const u8 *key, unsigned int keylen)
674 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
676 return crt->setkey(crt->base, key, keylen);
679 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
680 struct ablkcipher_request *req)
682 return __crypto_ablkcipher_cast(req->base.tfm);
685 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
687 struct ablkcipher_tfm *crt =
688 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
689 return crt->encrypt(req);
692 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
694 struct ablkcipher_tfm *crt =
695 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
696 return crt->decrypt(req);
699 static inline unsigned int crypto_ablkcipher_reqsize(
700 struct crypto_ablkcipher *tfm)
702 return crypto_ablkcipher_crt(tfm)->reqsize;
705 static inline void ablkcipher_request_set_tfm(
706 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
708 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
711 static inline struct ablkcipher_request *ablkcipher_request_cast(
712 struct crypto_async_request *req)
714 return container_of(req, struct ablkcipher_request, base);
717 static inline struct ablkcipher_request *ablkcipher_request_alloc(
718 struct crypto_ablkcipher *tfm, gfp_t gfp)
720 struct ablkcipher_request *req;
722 req = kmalloc(sizeof(struct ablkcipher_request) +
723 crypto_ablkcipher_reqsize(tfm), gfp);
726 ablkcipher_request_set_tfm(req, tfm);
731 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
736 static inline void ablkcipher_request_set_callback(
737 struct ablkcipher_request *req,
738 u32 flags, crypto_completion_t complete, void *data)
740 req->base.complete = complete;
741 req->base.data = data;
742 req->base.flags = flags;
745 static inline void ablkcipher_request_set_crypt(
746 struct ablkcipher_request *req,
747 struct scatterlist *src, struct scatterlist *dst,
748 unsigned int nbytes, void *iv)
752 req->nbytes = nbytes;
756 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
758 return (struct crypto_aead *)tfm;
761 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
763 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
768 static inline void crypto_free_aead(struct crypto_aead *tfm)
770 crypto_free_tfm(crypto_aead_tfm(tfm));
773 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
775 return &crypto_aead_tfm(tfm)->crt_aead;
778 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
780 return crypto_aead_crt(tfm)->ivsize;
783 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
785 return crypto_aead_crt(tfm)->authsize;
788 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
790 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
793 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
795 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
798 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
800 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
803 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
805 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
808 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
810 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
813 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
816 struct aead_tfm *crt = crypto_aead_crt(tfm);
818 return crt->setkey(crt->base, key, keylen);
821 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
823 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
825 return __crypto_aead_cast(req->base.tfm);
828 static inline int crypto_aead_encrypt(struct aead_request *req)
830 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
833 static inline int crypto_aead_decrypt(struct aead_request *req)
835 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
838 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
840 return crypto_aead_crt(tfm)->reqsize;
843 static inline void aead_request_set_tfm(struct aead_request *req,
844 struct crypto_aead *tfm)
846 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
849 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
852 struct aead_request *req;
854 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
857 aead_request_set_tfm(req, tfm);
862 static inline void aead_request_free(struct aead_request *req)
867 static inline void aead_request_set_callback(struct aead_request *req,
869 crypto_completion_t complete,
872 req->base.complete = complete;
873 req->base.data = data;
874 req->base.flags = flags;
877 static inline void aead_request_set_crypt(struct aead_request *req,
878 struct scatterlist *src,
879 struct scatterlist *dst,
880 unsigned int cryptlen, u8 *iv)
884 req->cryptlen = cryptlen;
888 static inline void aead_request_set_assoc(struct aead_request *req,
889 struct scatterlist *assoc,
890 unsigned int assoclen)
893 req->assoclen = assoclen;
896 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
897 struct crypto_tfm *tfm)
899 return (struct crypto_blkcipher *)tfm;
902 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
903 struct crypto_tfm *tfm)
905 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
906 return __crypto_blkcipher_cast(tfm);
909 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
910 const char *alg_name, u32 type, u32 mask)
912 type &= ~CRYPTO_ALG_TYPE_MASK;
913 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
914 mask |= CRYPTO_ALG_TYPE_MASK;
916 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
919 static inline struct crypto_tfm *crypto_blkcipher_tfm(
920 struct crypto_blkcipher *tfm)
925 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
927 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
930 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
932 type &= ~CRYPTO_ALG_TYPE_MASK;
933 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
934 mask |= CRYPTO_ALG_TYPE_MASK;
936 return crypto_has_alg(alg_name, type, mask);
939 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
941 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
944 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
945 struct crypto_blkcipher *tfm)
947 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
950 static inline struct blkcipher_alg *crypto_blkcipher_alg(
951 struct crypto_blkcipher *tfm)
953 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
956 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
958 return crypto_blkcipher_alg(tfm)->ivsize;
961 static inline unsigned int crypto_blkcipher_blocksize(
962 struct crypto_blkcipher *tfm)
964 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
967 static inline unsigned int crypto_blkcipher_alignmask(
968 struct crypto_blkcipher *tfm)
970 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
973 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
975 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
978 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
981 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
984 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
987 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
990 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
991 const u8 *key, unsigned int keylen)
993 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
997 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
998 struct scatterlist *dst,
999 struct scatterlist *src,
1000 unsigned int nbytes)
1002 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1003 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1006 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
1007 struct scatterlist *dst,
1008 struct scatterlist *src,
1009 unsigned int nbytes)
1011 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1014 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
1015 struct scatterlist *dst,
1016 struct scatterlist *src,
1017 unsigned int nbytes)
1019 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1020 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1023 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
1024 struct scatterlist *dst,
1025 struct scatterlist *src,
1026 unsigned int nbytes)
1028 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1031 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1032 const u8 *src, unsigned int len)
1034 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1037 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1038 u8 *dst, unsigned int len)
1040 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1043 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1045 return (struct crypto_cipher *)tfm;
1048 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1050 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1051 return __crypto_cipher_cast(tfm);
1054 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1057 type &= ~CRYPTO_ALG_TYPE_MASK;
1058 type |= CRYPTO_ALG_TYPE_CIPHER;
1059 mask |= CRYPTO_ALG_TYPE_MASK;
1061 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1064 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1069 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1071 crypto_free_tfm(crypto_cipher_tfm(tfm));
1074 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1076 type &= ~CRYPTO_ALG_TYPE_MASK;
1077 type |= CRYPTO_ALG_TYPE_CIPHER;
1078 mask |= CRYPTO_ALG_TYPE_MASK;
1080 return crypto_has_alg(alg_name, type, mask);
1083 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1085 return &crypto_cipher_tfm(tfm)->crt_cipher;
1088 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1090 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1093 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1095 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1098 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1100 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1103 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1106 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1109 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1112 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1115 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1116 const u8 *key, unsigned int keylen)
1118 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1122 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1123 u8 *dst, const u8 *src)
1125 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1129 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1130 u8 *dst, const u8 *src)
1132 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1136 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1138 return (struct crypto_hash *)tfm;
1141 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1143 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1144 CRYPTO_ALG_TYPE_HASH_MASK);
1145 return __crypto_hash_cast(tfm);
1148 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1151 type &= ~CRYPTO_ALG_TYPE_MASK;
1152 mask &= ~CRYPTO_ALG_TYPE_MASK;
1153 type |= CRYPTO_ALG_TYPE_HASH;
1154 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1156 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1159 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1164 static inline void crypto_free_hash(struct crypto_hash *tfm)
1166 crypto_free_tfm(crypto_hash_tfm(tfm));
1169 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1171 type &= ~CRYPTO_ALG_TYPE_MASK;
1172 mask &= ~CRYPTO_ALG_TYPE_MASK;
1173 type |= CRYPTO_ALG_TYPE_HASH;
1174 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1176 return crypto_has_alg(alg_name, type, mask);
1179 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1181 return &crypto_hash_tfm(tfm)->crt_hash;
1184 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1186 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1189 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1191 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1194 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1196 return crypto_hash_crt(tfm)->digestsize;
1199 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1201 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1204 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1206 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1209 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1211 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1214 static inline int crypto_hash_init(struct hash_desc *desc)
1216 return crypto_hash_crt(desc->tfm)->init(desc);
1219 static inline int crypto_hash_update(struct hash_desc *desc,
1220 struct scatterlist *sg,
1221 unsigned int nbytes)
1223 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1226 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1228 return crypto_hash_crt(desc->tfm)->final(desc, out);
1231 static inline int crypto_hash_digest(struct hash_desc *desc,
1232 struct scatterlist *sg,
1233 unsigned int nbytes, u8 *out)
1235 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1238 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1239 const u8 *key, unsigned int keylen)
1241 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1244 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1246 return (struct crypto_comp *)tfm;
1249 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1251 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1252 CRYPTO_ALG_TYPE_MASK);
1253 return __crypto_comp_cast(tfm);
1256 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1259 type &= ~CRYPTO_ALG_TYPE_MASK;
1260 type |= CRYPTO_ALG_TYPE_COMPRESS;
1261 mask |= CRYPTO_ALG_TYPE_MASK;
1263 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1266 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1271 static inline void crypto_free_comp(struct crypto_comp *tfm)
1273 crypto_free_tfm(crypto_comp_tfm(tfm));
1276 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1278 type &= ~CRYPTO_ALG_TYPE_MASK;
1279 type |= CRYPTO_ALG_TYPE_COMPRESS;
1280 mask |= CRYPTO_ALG_TYPE_MASK;
1282 return crypto_has_alg(alg_name, type, mask);
1285 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1287 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1290 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1292 return &crypto_comp_tfm(tfm)->crt_compress;
1295 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1296 const u8 *src, unsigned int slen,
1297 u8 *dst, unsigned int *dlen)
1299 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1300 src, slen, dst, dlen);
1303 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1304 const u8 *src, unsigned int slen,
1305 u8 *dst, unsigned int *dlen)
1307 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1308 src, slen, dst, dlen);
1311 static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm)
1313 return (struct crypto_ahash *)tfm;
1316 static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name,
1319 type &= ~CRYPTO_ALG_TYPE_MASK;
1320 mask &= ~CRYPTO_ALG_TYPE_MASK;
1321 type |= CRYPTO_ALG_TYPE_AHASH;
1322 mask |= CRYPTO_ALG_TYPE_AHASH_MASK;
1324 return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask));
1327 static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm)
1332 static inline void crypto_free_ahash(struct crypto_ahash *tfm)
1334 crypto_free_tfm(crypto_ahash_tfm(tfm));
1337 static inline unsigned int crypto_ahash_alignmask(
1338 struct crypto_ahash *tfm)
1340 return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm));
1343 static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm)
1345 return &crypto_ahash_tfm(tfm)->crt_ahash;
1348 static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm)
1350 return crypto_ahash_crt(tfm)->digestsize;
1353 static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm)
1355 return crypto_tfm_get_flags(crypto_ahash_tfm(tfm));
1358 static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags)
1360 crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags);
1363 static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags)
1365 crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags);
1368 static inline struct crypto_ahash *crypto_ahash_reqtfm(
1369 struct ahash_request *req)
1371 return __crypto_ahash_cast(req->base.tfm);
1374 static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm)
1376 return crypto_ahash_crt(tfm)->reqsize;
1379 static inline int crypto_ahash_setkey(struct crypto_ahash *tfm,
1380 const u8 *key, unsigned int keylen)
1382 struct ahash_tfm *crt = crypto_ahash_crt(tfm);
1384 return crt->setkey(tfm, key, keylen);
1387 static inline int crypto_ahash_digest(struct ahash_request *req)
1389 struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req));
1390 return crt->digest(req);
1393 static inline void ahash_request_set_tfm(struct ahash_request *req,
1394 struct crypto_ahash *tfm)
1396 req->base.tfm = crypto_ahash_tfm(tfm);
1399 static inline struct ahash_request *ahash_request_alloc(
1400 struct crypto_ahash *tfm, gfp_t gfp)
1402 struct ahash_request *req;
1404 req = kmalloc(sizeof(struct ahash_request) +
1405 crypto_ahash_reqsize(tfm), gfp);
1408 ahash_request_set_tfm(req, tfm);
1413 static inline void ahash_request_free(struct ahash_request *req)
1418 static inline struct ahash_request *ahash_request_cast(
1419 struct crypto_async_request *req)
1421 return container_of(req, struct ahash_request, base);
1424 static inline void ahash_request_set_callback(struct ahash_request *req,
1426 crypto_completion_t complete,
1429 req->base.complete = complete;
1430 req->base.data = data;
1431 req->base.flags = flags;
1434 static inline void ahash_request_set_crypt(struct ahash_request *req,
1435 struct scatterlist *src, u8 *result,
1436 unsigned int nbytes)
1439 req->nbytes = nbytes;
1440 req->result = result;
1443 #endif /* _LINUX_CRYPTO_H */