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;
492 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
494 /* Maximum number of (rtattr) parameters for each template. */
495 #define CRYPTO_MAX_ATTRS 32
497 struct crypto_attr_alg {
498 char name[CRYPTO_MAX_ALG_NAME];
501 struct crypto_attr_type {
506 struct crypto_attr_u32 {
511 * Transform user interface.
514 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
515 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
516 void crypto_free_tfm(struct crypto_tfm *tfm);
519 * Transform helpers which query the underlying algorithm.
521 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
523 return tfm->__crt_alg->cra_name;
526 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
528 return tfm->__crt_alg->cra_driver_name;
531 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
533 return tfm->__crt_alg->cra_priority;
536 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
538 return module_name(tfm->__crt_alg->cra_module);
541 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
543 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
546 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
548 return tfm->__crt_alg->cra_blocksize;
551 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
553 return tfm->__crt_alg->cra_alignmask;
556 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
558 return tfm->crt_flags;
561 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
563 tfm->crt_flags |= flags;
566 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
568 tfm->crt_flags &= ~flags;
571 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
573 return tfm->__crt_ctx;
576 static inline unsigned int crypto_tfm_ctx_alignment(void)
578 struct crypto_tfm *tfm;
579 return __alignof__(tfm->__crt_ctx);
585 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
586 struct crypto_tfm *tfm)
588 return (struct crypto_ablkcipher *)tfm;
591 static inline u32 crypto_skcipher_type(u32 type)
593 type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
594 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
598 static inline u32 crypto_skcipher_mask(u32 mask)
600 mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
601 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
605 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
608 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
609 struct crypto_ablkcipher *tfm)
614 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
616 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
619 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
622 return crypto_has_alg(alg_name, crypto_skcipher_type(type),
623 crypto_skcipher_mask(mask));
626 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
627 struct crypto_ablkcipher *tfm)
629 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
632 static inline unsigned int crypto_ablkcipher_ivsize(
633 struct crypto_ablkcipher *tfm)
635 return crypto_ablkcipher_crt(tfm)->ivsize;
638 static inline unsigned int crypto_ablkcipher_blocksize(
639 struct crypto_ablkcipher *tfm)
641 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
644 static inline unsigned int crypto_ablkcipher_alignmask(
645 struct crypto_ablkcipher *tfm)
647 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
650 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
652 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
655 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
658 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
661 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
664 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
667 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
668 const u8 *key, unsigned int keylen)
670 struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
672 return crt->setkey(crt->base, key, keylen);
675 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
676 struct ablkcipher_request *req)
678 return __crypto_ablkcipher_cast(req->base.tfm);
681 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
683 struct ablkcipher_tfm *crt =
684 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
685 return crt->encrypt(req);
688 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
690 struct ablkcipher_tfm *crt =
691 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
692 return crt->decrypt(req);
695 static inline unsigned int crypto_ablkcipher_reqsize(
696 struct crypto_ablkcipher *tfm)
698 return crypto_ablkcipher_crt(tfm)->reqsize;
701 static inline void ablkcipher_request_set_tfm(
702 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
704 req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
707 static inline struct ablkcipher_request *ablkcipher_request_cast(
708 struct crypto_async_request *req)
710 return container_of(req, struct ablkcipher_request, base);
713 static inline struct ablkcipher_request *ablkcipher_request_alloc(
714 struct crypto_ablkcipher *tfm, gfp_t gfp)
716 struct ablkcipher_request *req;
718 req = kmalloc(sizeof(struct ablkcipher_request) +
719 crypto_ablkcipher_reqsize(tfm), gfp);
722 ablkcipher_request_set_tfm(req, tfm);
727 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
732 static inline void ablkcipher_request_set_callback(
733 struct ablkcipher_request *req,
734 u32 flags, crypto_completion_t complete, void *data)
736 req->base.complete = complete;
737 req->base.data = data;
738 req->base.flags = flags;
741 static inline void ablkcipher_request_set_crypt(
742 struct ablkcipher_request *req,
743 struct scatterlist *src, struct scatterlist *dst,
744 unsigned int nbytes, void *iv)
748 req->nbytes = nbytes;
752 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
754 return (struct crypto_aead *)tfm;
757 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
759 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
764 static inline void crypto_free_aead(struct crypto_aead *tfm)
766 crypto_free_tfm(crypto_aead_tfm(tfm));
769 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
771 return &crypto_aead_tfm(tfm)->crt_aead;
774 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
776 return crypto_aead_crt(tfm)->ivsize;
779 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
781 return crypto_aead_crt(tfm)->authsize;
784 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
786 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
789 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
791 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
794 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
796 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
799 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
801 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
804 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
806 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
809 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
812 struct aead_tfm *crt = crypto_aead_crt(tfm);
814 return crt->setkey(crt->base, key, keylen);
817 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
819 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
821 return __crypto_aead_cast(req->base.tfm);
824 static inline int crypto_aead_encrypt(struct aead_request *req)
826 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
829 static inline int crypto_aead_decrypt(struct aead_request *req)
831 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
834 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
836 return crypto_aead_crt(tfm)->reqsize;
839 static inline void aead_request_set_tfm(struct aead_request *req,
840 struct crypto_aead *tfm)
842 req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
845 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
848 struct aead_request *req;
850 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
853 aead_request_set_tfm(req, tfm);
858 static inline void aead_request_free(struct aead_request *req)
863 static inline void aead_request_set_callback(struct aead_request *req,
865 crypto_completion_t complete,
868 req->base.complete = complete;
869 req->base.data = data;
870 req->base.flags = flags;
873 static inline void aead_request_set_crypt(struct aead_request *req,
874 struct scatterlist *src,
875 struct scatterlist *dst,
876 unsigned int cryptlen, u8 *iv)
880 req->cryptlen = cryptlen;
884 static inline void aead_request_set_assoc(struct aead_request *req,
885 struct scatterlist *assoc,
886 unsigned int assoclen)
889 req->assoclen = assoclen;
892 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
893 struct crypto_tfm *tfm)
895 return (struct crypto_blkcipher *)tfm;
898 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
899 struct crypto_tfm *tfm)
901 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
902 return __crypto_blkcipher_cast(tfm);
905 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
906 const char *alg_name, u32 type, u32 mask)
908 type &= ~CRYPTO_ALG_TYPE_MASK;
909 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
910 mask |= CRYPTO_ALG_TYPE_MASK;
912 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
915 static inline struct crypto_tfm *crypto_blkcipher_tfm(
916 struct crypto_blkcipher *tfm)
921 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
923 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
926 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
928 type &= ~CRYPTO_ALG_TYPE_MASK;
929 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
930 mask |= CRYPTO_ALG_TYPE_MASK;
932 return crypto_has_alg(alg_name, type, mask);
935 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
937 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
940 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
941 struct crypto_blkcipher *tfm)
943 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
946 static inline struct blkcipher_alg *crypto_blkcipher_alg(
947 struct crypto_blkcipher *tfm)
949 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
952 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
954 return crypto_blkcipher_alg(tfm)->ivsize;
957 static inline unsigned int crypto_blkcipher_blocksize(
958 struct crypto_blkcipher *tfm)
960 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
963 static inline unsigned int crypto_blkcipher_alignmask(
964 struct crypto_blkcipher *tfm)
966 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
969 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
971 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
974 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
977 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
980 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
983 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
986 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
987 const u8 *key, unsigned int keylen)
989 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
993 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
994 struct scatterlist *dst,
995 struct scatterlist *src,
998 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
999 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1002 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
1003 struct scatterlist *dst,
1004 struct scatterlist *src,
1005 unsigned int nbytes)
1007 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1010 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
1011 struct scatterlist *dst,
1012 struct scatterlist *src,
1013 unsigned int nbytes)
1015 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1016 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1019 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
1020 struct scatterlist *dst,
1021 struct scatterlist *src,
1022 unsigned int nbytes)
1024 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1027 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1028 const u8 *src, unsigned int len)
1030 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1033 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1034 u8 *dst, unsigned int len)
1036 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1039 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1041 return (struct crypto_cipher *)tfm;
1044 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1046 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1047 return __crypto_cipher_cast(tfm);
1050 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1053 type &= ~CRYPTO_ALG_TYPE_MASK;
1054 type |= CRYPTO_ALG_TYPE_CIPHER;
1055 mask |= CRYPTO_ALG_TYPE_MASK;
1057 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1060 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1065 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1067 crypto_free_tfm(crypto_cipher_tfm(tfm));
1070 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1072 type &= ~CRYPTO_ALG_TYPE_MASK;
1073 type |= CRYPTO_ALG_TYPE_CIPHER;
1074 mask |= CRYPTO_ALG_TYPE_MASK;
1076 return crypto_has_alg(alg_name, type, mask);
1079 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1081 return &crypto_cipher_tfm(tfm)->crt_cipher;
1084 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1086 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1089 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1091 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1094 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1096 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1099 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1102 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1105 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1108 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1111 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1112 const u8 *key, unsigned int keylen)
1114 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1118 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1119 u8 *dst, const u8 *src)
1121 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1125 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1126 u8 *dst, const u8 *src)
1128 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1132 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1134 return (struct crypto_hash *)tfm;
1137 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1139 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1140 CRYPTO_ALG_TYPE_HASH_MASK);
1141 return __crypto_hash_cast(tfm);
1144 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1147 type &= ~CRYPTO_ALG_TYPE_MASK;
1148 mask &= ~CRYPTO_ALG_TYPE_MASK;
1149 type |= CRYPTO_ALG_TYPE_HASH;
1150 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1152 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1155 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1160 static inline void crypto_free_hash(struct crypto_hash *tfm)
1162 crypto_free_tfm(crypto_hash_tfm(tfm));
1165 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1167 type &= ~CRYPTO_ALG_TYPE_MASK;
1168 mask &= ~CRYPTO_ALG_TYPE_MASK;
1169 type |= CRYPTO_ALG_TYPE_HASH;
1170 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1172 return crypto_has_alg(alg_name, type, mask);
1175 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1177 return &crypto_hash_tfm(tfm)->crt_hash;
1180 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1182 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1185 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1187 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1190 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1192 return crypto_hash_crt(tfm)->digestsize;
1195 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1197 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1200 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1202 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1205 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1207 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1210 static inline int crypto_hash_init(struct hash_desc *desc)
1212 return crypto_hash_crt(desc->tfm)->init(desc);
1215 static inline int crypto_hash_update(struct hash_desc *desc,
1216 struct scatterlist *sg,
1217 unsigned int nbytes)
1219 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1222 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1224 return crypto_hash_crt(desc->tfm)->final(desc, out);
1227 static inline int crypto_hash_digest(struct hash_desc *desc,
1228 struct scatterlist *sg,
1229 unsigned int nbytes, u8 *out)
1231 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1234 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1235 const u8 *key, unsigned int keylen)
1237 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1240 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1242 return (struct crypto_comp *)tfm;
1245 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1247 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1248 CRYPTO_ALG_TYPE_MASK);
1249 return __crypto_comp_cast(tfm);
1252 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1255 type &= ~CRYPTO_ALG_TYPE_MASK;
1256 type |= CRYPTO_ALG_TYPE_COMPRESS;
1257 mask |= CRYPTO_ALG_TYPE_MASK;
1259 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1262 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1267 static inline void crypto_free_comp(struct crypto_comp *tfm)
1269 crypto_free_tfm(crypto_comp_tfm(tfm));
1272 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1274 type &= ~CRYPTO_ALG_TYPE_MASK;
1275 type |= CRYPTO_ALG_TYPE_COMPRESS;
1276 mask |= CRYPTO_ALG_TYPE_MASK;
1278 return crypto_has_alg(alg_name, type, mask);
1281 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1283 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1286 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1288 return &crypto_comp_tfm(tfm)->crt_compress;
1291 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1292 const u8 *src, unsigned int slen,
1293 u8 *dst, unsigned int *dlen)
1295 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1296 src, slen, dst, dlen);
1299 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1300 const u8 *src, unsigned int slen,
1301 u8 *dst, unsigned int *dlen)
1303 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1304 src, slen, dst, dlen);
1307 #endif /* _LINUX_CRYPTO_H */