2 * Scatterlist Cryptographic API.
9 * and Nettle, by Niels Möller.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
17 #ifndef _LINUX_CRYPTO_H
18 #define _LINUX_CRYPTO_H
20 #include <asm/atomic.h>
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/list.h>
24 #include <linux/slab.h>
25 #include <linux/string.h>
26 #include <linux/uaccess.h>
29 * Algorithm masks and types.
31 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
32 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
33 #define CRYPTO_ALG_TYPE_DIGEST 0x00000002
34 #define CRYPTO_ALG_TYPE_HASH 0x00000003
35 #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
36 #define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005
37 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000008
38 #define CRYPTO_ALG_TYPE_AEAD 0x00000009
40 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
41 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c
43 #define CRYPTO_ALG_LARVAL 0x00000010
44 #define CRYPTO_ALG_DEAD 0x00000020
45 #define CRYPTO_ALG_DYING 0x00000040
46 #define CRYPTO_ALG_ASYNC 0x00000080
49 * Set this bit if and only if the algorithm requires another algorithm of
50 * the same type to handle corner cases.
52 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
55 * Transform masks and values (for crt_flags).
57 #define CRYPTO_TFM_REQ_MASK 0x000fff00
58 #define CRYPTO_TFM_RES_MASK 0xfff00000
60 #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
61 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
62 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
63 #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
64 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
65 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
66 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
67 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
70 * Miscellaneous stuff.
72 #define CRYPTO_MAX_ALG_NAME 64
75 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
76 * declaration) is used to ensure that the crypto_tfm context structure is
77 * aligned correctly for the given architecture so that there are no alignment
78 * faults for C data types. In particular, this is required on platforms such
79 * as arm where pointers are 32-bit aligned but there are data types such as
80 * u64 which require 64-bit alignment.
82 #if defined(ARCH_KMALLOC_MINALIGN)
83 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
84 #elif defined(ARCH_SLAB_MINALIGN)
85 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
88 #ifdef CRYPTO_MINALIGN
89 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
91 #define CRYPTO_MINALIGN_ATTR
95 struct crypto_ablkcipher;
96 struct crypto_async_request;
98 struct crypto_blkcipher;
103 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
105 struct crypto_async_request {
106 struct list_head list;
107 crypto_completion_t complete;
109 struct crypto_tfm *tfm;
114 struct ablkcipher_request {
115 struct crypto_async_request base;
121 struct scatterlist *src;
122 struct scatterlist *dst;
124 void *__ctx[] CRYPTO_MINALIGN_ATTR;
128 * struct aead_request - AEAD request
129 * @base: Common attributes for async crypto requests
130 * @assoclen: Length in bytes of associated data for authentication
131 * @cryptlen: Length of data to be encrypted or decrypted
132 * @iv: Initialisation vector
133 * @assoc: Associated data
135 * @dst: Destination data
136 * @__ctx: Start of private context data
138 struct aead_request {
139 struct crypto_async_request base;
141 unsigned int assoclen;
142 unsigned int cryptlen;
146 struct scatterlist *assoc;
147 struct scatterlist *src;
148 struct scatterlist *dst;
150 void *__ctx[] CRYPTO_MINALIGN_ATTR;
153 struct blkcipher_desc {
154 struct crypto_blkcipher *tfm;
160 struct crypto_tfm *tfm;
161 void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
162 unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
163 const u8 *src, unsigned int nbytes);
168 struct crypto_hash *tfm;
173 * Algorithms: modular crypto algorithm implementations, managed
174 * via crypto_register_alg() and crypto_unregister_alg().
176 struct ablkcipher_alg {
177 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
178 unsigned int keylen);
179 int (*encrypt)(struct ablkcipher_request *req);
180 int (*decrypt)(struct ablkcipher_request *req);
182 unsigned int min_keysize;
183 unsigned int max_keysize;
188 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
189 unsigned int keylen);
190 int (*encrypt)(struct aead_request *req);
191 int (*decrypt)(struct aead_request *req);
194 unsigned int authsize;
197 struct blkcipher_alg {
198 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
199 unsigned int keylen);
200 int (*encrypt)(struct blkcipher_desc *desc,
201 struct scatterlist *dst, struct scatterlist *src,
202 unsigned int nbytes);
203 int (*decrypt)(struct blkcipher_desc *desc,
204 struct scatterlist *dst, struct scatterlist *src,
205 unsigned int nbytes);
207 unsigned int min_keysize;
208 unsigned int max_keysize;
213 unsigned int cia_min_keysize;
214 unsigned int cia_max_keysize;
215 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
216 unsigned int keylen);
217 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
218 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
222 unsigned int dia_digestsize;
223 void (*dia_init)(struct crypto_tfm *tfm);
224 void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
226 void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
227 int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
228 unsigned int keylen);
232 int (*init)(struct hash_desc *desc);
233 int (*update)(struct hash_desc *desc, struct scatterlist *sg,
234 unsigned int nbytes);
235 int (*final)(struct hash_desc *desc, u8 *out);
236 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
237 unsigned int nbytes, u8 *out);
238 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
239 unsigned int keylen);
241 unsigned int digestsize;
244 struct compress_alg {
245 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
246 unsigned int slen, u8 *dst, unsigned int *dlen);
247 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
248 unsigned int slen, u8 *dst, unsigned int *dlen);
251 #define cra_ablkcipher cra_u.ablkcipher
252 #define cra_aead cra_u.aead
253 #define cra_blkcipher cra_u.blkcipher
254 #define cra_cipher cra_u.cipher
255 #define cra_digest cra_u.digest
256 #define cra_hash cra_u.hash
257 #define cra_compress cra_u.compress
260 struct list_head cra_list;
261 struct list_head cra_users;
264 unsigned int cra_blocksize;
265 unsigned int cra_ctxsize;
266 unsigned int cra_alignmask;
271 char cra_name[CRYPTO_MAX_ALG_NAME];
272 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
274 const struct crypto_type *cra_type;
277 struct ablkcipher_alg ablkcipher;
278 struct aead_alg aead;
279 struct blkcipher_alg blkcipher;
280 struct cipher_alg cipher;
281 struct digest_alg digest;
282 struct hash_alg hash;
283 struct compress_alg compress;
286 int (*cra_init)(struct crypto_tfm *tfm);
287 void (*cra_exit)(struct crypto_tfm *tfm);
288 void (*cra_destroy)(struct crypto_alg *alg);
290 struct module *cra_module;
294 * Algorithm registration interface.
296 int crypto_register_alg(struct crypto_alg *alg);
297 int crypto_unregister_alg(struct crypto_alg *alg);
300 * Algorithm query interface.
303 int crypto_has_alg(const char *name, u32 type, u32 mask);
305 static inline int crypto_has_alg(const char *name, u32 type, u32 mask)
312 * Transforms: user-instantiated objects which encapsulate algorithms
313 * and core processing logic. Managed via crypto_alloc_*() and
314 * crypto_free_*(), as well as the various helpers below.
317 struct ablkcipher_tfm {
318 int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
319 unsigned int keylen);
320 int (*encrypt)(struct ablkcipher_request *req);
321 int (*decrypt)(struct ablkcipher_request *req);
323 unsigned int reqsize;
327 int (*setkey)(struct crypto_aead *tfm, const u8 *key,
328 unsigned int keylen);
329 int (*encrypt)(struct aead_request *req);
330 int (*decrypt)(struct aead_request *req);
332 unsigned int authsize;
333 unsigned int reqsize;
336 struct blkcipher_tfm {
338 int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
339 unsigned int keylen);
340 int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
341 struct scatterlist *src, unsigned int nbytes);
342 int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
343 struct scatterlist *src, unsigned int nbytes);
347 int (*cit_setkey)(struct crypto_tfm *tfm,
348 const u8 *key, unsigned int keylen);
349 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
350 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
354 int (*init)(struct hash_desc *desc);
355 int (*update)(struct hash_desc *desc,
356 struct scatterlist *sg, unsigned int nsg);
357 int (*final)(struct hash_desc *desc, u8 *out);
358 int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
359 unsigned int nsg, u8 *out);
360 int (*setkey)(struct crypto_hash *tfm, const u8 *key,
361 unsigned int keylen);
362 unsigned int digestsize;
365 struct compress_tfm {
366 int (*cot_compress)(struct crypto_tfm *tfm,
367 const u8 *src, unsigned int slen,
368 u8 *dst, unsigned int *dlen);
369 int (*cot_decompress)(struct crypto_tfm *tfm,
370 const u8 *src, unsigned int slen,
371 u8 *dst, unsigned int *dlen);
374 #define crt_ablkcipher crt_u.ablkcipher
375 #define crt_aead crt_u.aead
376 #define crt_blkcipher crt_u.blkcipher
377 #define crt_cipher crt_u.cipher
378 #define crt_hash crt_u.hash
379 #define crt_compress crt_u.compress
386 struct ablkcipher_tfm ablkcipher;
387 struct aead_tfm aead;
388 struct blkcipher_tfm blkcipher;
389 struct cipher_tfm cipher;
390 struct hash_tfm hash;
391 struct compress_tfm compress;
394 struct crypto_alg *__crt_alg;
396 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
399 struct crypto_ablkcipher {
400 struct crypto_tfm base;
404 struct crypto_tfm base;
407 struct crypto_blkcipher {
408 struct crypto_tfm base;
411 struct crypto_cipher {
412 struct crypto_tfm base;
416 struct crypto_tfm base;
420 struct crypto_tfm base;
431 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
433 /* Maximum number of (rtattr) parameters for each template. */
434 #define CRYPTO_MAX_ATTRS 32
436 struct crypto_attr_alg {
437 char name[CRYPTO_MAX_ALG_NAME];
440 struct crypto_attr_type {
445 struct crypto_attr_u32 {
450 * Transform user interface.
453 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
454 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
455 void crypto_free_tfm(struct crypto_tfm *tfm);
458 * Transform helpers which query the underlying algorithm.
460 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
462 return tfm->__crt_alg->cra_name;
465 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
467 return tfm->__crt_alg->cra_driver_name;
470 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
472 return tfm->__crt_alg->cra_priority;
475 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
477 return module_name(tfm->__crt_alg->cra_module);
480 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
482 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
485 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
487 return tfm->__crt_alg->cra_blocksize;
490 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
492 return tfm->__crt_alg->cra_alignmask;
495 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
497 return tfm->crt_flags;
500 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
502 tfm->crt_flags |= flags;
505 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
507 tfm->crt_flags &= ~flags;
510 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
512 return tfm->__crt_ctx;
515 static inline unsigned int crypto_tfm_ctx_alignment(void)
517 struct crypto_tfm *tfm;
518 return __alignof__(tfm->__crt_ctx);
524 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
525 struct crypto_tfm *tfm)
527 return (struct crypto_ablkcipher *)tfm;
530 static inline struct crypto_ablkcipher *crypto_alloc_ablkcipher(
531 const char *alg_name, u32 type, u32 mask)
533 type &= ~CRYPTO_ALG_TYPE_MASK;
534 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
535 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
537 return __crypto_ablkcipher_cast(
538 crypto_alloc_base(alg_name, type, mask));
541 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
542 struct crypto_ablkcipher *tfm)
547 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
549 crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
552 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
555 type &= ~CRYPTO_ALG_TYPE_MASK;
556 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
557 mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
559 return crypto_has_alg(alg_name, type, mask);
562 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
563 struct crypto_ablkcipher *tfm)
565 return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
568 static inline unsigned int crypto_ablkcipher_ivsize(
569 struct crypto_ablkcipher *tfm)
571 return crypto_ablkcipher_crt(tfm)->ivsize;
574 static inline unsigned int crypto_ablkcipher_blocksize(
575 struct crypto_ablkcipher *tfm)
577 return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
580 static inline unsigned int crypto_ablkcipher_alignmask(
581 struct crypto_ablkcipher *tfm)
583 return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
586 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
588 return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
591 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
594 crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
597 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
600 crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
603 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
604 const u8 *key, unsigned int keylen)
606 return crypto_ablkcipher_crt(tfm)->setkey(tfm, key, keylen);
609 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
610 struct ablkcipher_request *req)
612 return __crypto_ablkcipher_cast(req->base.tfm);
615 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
617 struct ablkcipher_tfm *crt =
618 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
619 return crt->encrypt(req);
622 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
624 struct ablkcipher_tfm *crt =
625 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
626 return crt->decrypt(req);
629 static inline unsigned int crypto_ablkcipher_reqsize(
630 struct crypto_ablkcipher *tfm)
632 return crypto_ablkcipher_crt(tfm)->reqsize;
635 static inline void ablkcipher_request_set_tfm(
636 struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
638 req->base.tfm = crypto_ablkcipher_tfm(tfm);
641 static inline struct ablkcipher_request *ablkcipher_request_cast(
642 struct crypto_async_request *req)
644 return container_of(req, struct ablkcipher_request, base);
647 static inline struct ablkcipher_request *ablkcipher_request_alloc(
648 struct crypto_ablkcipher *tfm, gfp_t gfp)
650 struct ablkcipher_request *req;
652 req = kmalloc(sizeof(struct ablkcipher_request) +
653 crypto_ablkcipher_reqsize(tfm), gfp);
656 ablkcipher_request_set_tfm(req, tfm);
661 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
666 static inline void ablkcipher_request_set_callback(
667 struct ablkcipher_request *req,
668 u32 flags, crypto_completion_t complete, void *data)
670 req->base.complete = complete;
671 req->base.data = data;
672 req->base.flags = flags;
675 static inline void ablkcipher_request_set_crypt(
676 struct ablkcipher_request *req,
677 struct scatterlist *src, struct scatterlist *dst,
678 unsigned int nbytes, void *iv)
682 req->nbytes = nbytes;
686 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
688 return (struct crypto_aead *)tfm;
691 static inline struct crypto_aead *crypto_alloc_aead(const char *alg_name,
694 type &= ~CRYPTO_ALG_TYPE_MASK;
695 type |= CRYPTO_ALG_TYPE_AEAD;
696 mask |= CRYPTO_ALG_TYPE_MASK;
698 return __crypto_aead_cast(crypto_alloc_base(alg_name, type, mask));
701 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
706 static inline void crypto_free_aead(struct crypto_aead *tfm)
708 crypto_free_tfm(crypto_aead_tfm(tfm));
711 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
713 return &crypto_aead_tfm(tfm)->crt_aead;
716 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
718 return crypto_aead_crt(tfm)->ivsize;
721 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
723 return crypto_aead_crt(tfm)->authsize;
726 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
728 return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
731 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
733 return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
736 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
738 return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
741 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
743 crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
746 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
748 crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
751 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
754 return crypto_aead_crt(tfm)->setkey(tfm, key, keylen);
757 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
759 return __crypto_aead_cast(req->base.tfm);
762 static inline int crypto_aead_encrypt(struct aead_request *req)
764 return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
767 static inline int crypto_aead_decrypt(struct aead_request *req)
769 return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
772 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
774 return crypto_aead_crt(tfm)->reqsize;
777 static inline void aead_request_set_tfm(struct aead_request *req,
778 struct crypto_aead *tfm)
780 req->base.tfm = crypto_aead_tfm(tfm);
783 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
786 struct aead_request *req;
788 req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
791 aead_request_set_tfm(req, tfm);
796 static inline void aead_request_free(struct aead_request *req)
801 static inline void aead_request_set_callback(struct aead_request *req,
803 crypto_completion_t complete,
806 req->base.complete = complete;
807 req->base.data = data;
808 req->base.flags = flags;
811 static inline void aead_request_set_crypt(struct aead_request *req,
812 struct scatterlist *src,
813 struct scatterlist *dst,
814 unsigned int cryptlen, u8 *iv)
818 req->cryptlen = cryptlen;
822 static inline void aead_request_set_assoc(struct aead_request *req,
823 struct scatterlist *assoc,
824 unsigned int assoclen)
827 req->assoclen = assoclen;
830 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
831 struct crypto_tfm *tfm)
833 return (struct crypto_blkcipher *)tfm;
836 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
837 struct crypto_tfm *tfm)
839 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
840 return __crypto_blkcipher_cast(tfm);
843 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
844 const char *alg_name, u32 type, u32 mask)
846 type &= ~CRYPTO_ALG_TYPE_MASK;
847 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
848 mask |= CRYPTO_ALG_TYPE_MASK;
850 return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
853 static inline struct crypto_tfm *crypto_blkcipher_tfm(
854 struct crypto_blkcipher *tfm)
859 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
861 crypto_free_tfm(crypto_blkcipher_tfm(tfm));
864 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
866 type &= ~CRYPTO_ALG_TYPE_MASK;
867 type |= CRYPTO_ALG_TYPE_BLKCIPHER;
868 mask |= CRYPTO_ALG_TYPE_MASK;
870 return crypto_has_alg(alg_name, type, mask);
873 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
875 return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
878 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
879 struct crypto_blkcipher *tfm)
881 return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
884 static inline struct blkcipher_alg *crypto_blkcipher_alg(
885 struct crypto_blkcipher *tfm)
887 return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
890 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
892 return crypto_blkcipher_alg(tfm)->ivsize;
895 static inline unsigned int crypto_blkcipher_blocksize(
896 struct crypto_blkcipher *tfm)
898 return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
901 static inline unsigned int crypto_blkcipher_alignmask(
902 struct crypto_blkcipher *tfm)
904 return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
907 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
909 return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
912 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
915 crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
918 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
921 crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
924 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
925 const u8 *key, unsigned int keylen)
927 return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
931 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
932 struct scatterlist *dst,
933 struct scatterlist *src,
936 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
937 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
940 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
941 struct scatterlist *dst,
942 struct scatterlist *src,
945 return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
948 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
949 struct scatterlist *dst,
950 struct scatterlist *src,
953 desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
954 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
957 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
958 struct scatterlist *dst,
959 struct scatterlist *src,
962 return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
965 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
966 const u8 *src, unsigned int len)
968 memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
971 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
972 u8 *dst, unsigned int len)
974 memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
977 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
979 return (struct crypto_cipher *)tfm;
982 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
984 BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
985 return __crypto_cipher_cast(tfm);
988 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
991 type &= ~CRYPTO_ALG_TYPE_MASK;
992 type |= CRYPTO_ALG_TYPE_CIPHER;
993 mask |= CRYPTO_ALG_TYPE_MASK;
995 return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
998 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1003 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1005 crypto_free_tfm(crypto_cipher_tfm(tfm));
1008 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1010 type &= ~CRYPTO_ALG_TYPE_MASK;
1011 type |= CRYPTO_ALG_TYPE_CIPHER;
1012 mask |= CRYPTO_ALG_TYPE_MASK;
1014 return crypto_has_alg(alg_name, type, mask);
1017 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1019 return &crypto_cipher_tfm(tfm)->crt_cipher;
1022 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1024 return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1027 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1029 return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1032 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1034 return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1037 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1040 crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1043 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1046 crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1049 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1050 const u8 *key, unsigned int keylen)
1052 return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1056 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1057 u8 *dst, const u8 *src)
1059 crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1063 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1064 u8 *dst, const u8 *src)
1066 crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1070 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1072 return (struct crypto_hash *)tfm;
1075 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1077 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1078 CRYPTO_ALG_TYPE_HASH_MASK);
1079 return __crypto_hash_cast(tfm);
1082 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1085 type &= ~CRYPTO_ALG_TYPE_MASK;
1086 type |= CRYPTO_ALG_TYPE_HASH;
1087 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1089 return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1092 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1097 static inline void crypto_free_hash(struct crypto_hash *tfm)
1099 crypto_free_tfm(crypto_hash_tfm(tfm));
1102 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1104 type &= ~CRYPTO_ALG_TYPE_MASK;
1105 type |= CRYPTO_ALG_TYPE_HASH;
1106 mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1108 return crypto_has_alg(alg_name, type, mask);
1111 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1113 return &crypto_hash_tfm(tfm)->crt_hash;
1116 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1118 return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1121 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1123 return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1126 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1128 return crypto_hash_crt(tfm)->digestsize;
1131 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1133 return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1136 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1138 crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1141 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1143 crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1146 static inline int crypto_hash_init(struct hash_desc *desc)
1148 return crypto_hash_crt(desc->tfm)->init(desc);
1151 static inline int crypto_hash_update(struct hash_desc *desc,
1152 struct scatterlist *sg,
1153 unsigned int nbytes)
1155 return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1158 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1160 return crypto_hash_crt(desc->tfm)->final(desc, out);
1163 static inline int crypto_hash_digest(struct hash_desc *desc,
1164 struct scatterlist *sg,
1165 unsigned int nbytes, u8 *out)
1167 return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1170 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1171 const u8 *key, unsigned int keylen)
1173 return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1176 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1178 return (struct crypto_comp *)tfm;
1181 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1183 BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1184 CRYPTO_ALG_TYPE_MASK);
1185 return __crypto_comp_cast(tfm);
1188 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1191 type &= ~CRYPTO_ALG_TYPE_MASK;
1192 type |= CRYPTO_ALG_TYPE_COMPRESS;
1193 mask |= CRYPTO_ALG_TYPE_MASK;
1195 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1198 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1203 static inline void crypto_free_comp(struct crypto_comp *tfm)
1205 crypto_free_tfm(crypto_comp_tfm(tfm));
1208 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1210 type &= ~CRYPTO_ALG_TYPE_MASK;
1211 type |= CRYPTO_ALG_TYPE_COMPRESS;
1212 mask |= CRYPTO_ALG_TYPE_MASK;
1214 return crypto_has_alg(alg_name, type, mask);
1217 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1219 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1222 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1224 return &crypto_comp_tfm(tfm)->crt_compress;
1227 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1228 const u8 *src, unsigned int slen,
1229 u8 *dst, unsigned int *dlen)
1231 return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1232 src, slen, dst, dlen);
1235 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1236 const u8 *src, unsigned int slen,
1237 u8 *dst, unsigned int *dlen)
1239 return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1240 src, slen, dst, dlen);
1243 #endif /* _LINUX_CRYPTO_H */