[CRYPTO] api: Mark parts of cipher interface as deprecated
[linux-2.6.git] / include / linux / crypto.h
1 /*
2  * Scatterlist Cryptographic API.
3  *
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>
7  *
8  * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
9  * and Nettle, by Niels Möller.
10  * 
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) 
14  * any later version.
15  *
16  */
17 #ifndef _LINUX_CRYPTO_H
18 #define _LINUX_CRYPTO_H
19
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>
27
28 /*
29  * Algorithm masks and types.
30  */
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_BLKCIPHER       0x00000003
35 #define CRYPTO_ALG_TYPE_COMPRESS        0x00000004
36
37 #define CRYPTO_ALG_LARVAL               0x00000010
38 #define CRYPTO_ALG_DEAD                 0x00000020
39 #define CRYPTO_ALG_DYING                0x00000040
40 #define CRYPTO_ALG_ASYNC                0x00000080
41
42 /*
43  * Transform masks and values (for crt_flags).
44  */
45 #define CRYPTO_TFM_MODE_MASK            0x000000ff
46 #define CRYPTO_TFM_REQ_MASK             0x000fff00
47 #define CRYPTO_TFM_RES_MASK             0xfff00000
48
49 #define CRYPTO_TFM_MODE_ECB             0x00000001
50 #define CRYPTO_TFM_MODE_CBC             0x00000002
51 #define CRYPTO_TFM_MODE_CFB             0x00000004
52 #define CRYPTO_TFM_MODE_CTR             0x00000008
53
54 #define CRYPTO_TFM_REQ_WEAK_KEY         0x00000100
55 #define CRYPTO_TFM_REQ_MAY_SLEEP        0x00000200
56 #define CRYPTO_TFM_RES_WEAK_KEY         0x00100000
57 #define CRYPTO_TFM_RES_BAD_KEY_LEN      0x00200000
58 #define CRYPTO_TFM_RES_BAD_KEY_SCHED    0x00400000
59 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN    0x00800000
60 #define CRYPTO_TFM_RES_BAD_FLAGS        0x01000000
61
62 /*
63  * Miscellaneous stuff.
64  */
65 #define CRYPTO_UNSPEC                   0
66 #define CRYPTO_MAX_ALG_NAME             64
67
68 #define CRYPTO_DIR_ENCRYPT              1
69 #define CRYPTO_DIR_DECRYPT              0
70
71 /*
72  * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
73  * declaration) is used to ensure that the crypto_tfm context structure is
74  * aligned correctly for the given architecture so that there are no alignment
75  * faults for C data types.  In particular, this is required on platforms such
76  * as arm where pointers are 32-bit aligned but there are data types such as
77  * u64 which require 64-bit alignment.
78  */
79 #if defined(ARCH_KMALLOC_MINALIGN)
80 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
81 #elif defined(ARCH_SLAB_MINALIGN)
82 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
83 #endif
84
85 #ifdef CRYPTO_MINALIGN
86 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
87 #else
88 #define CRYPTO_MINALIGN_ATTR
89 #endif
90
91 struct scatterlist;
92 struct crypto_blkcipher;
93 struct crypto_tfm;
94 struct crypto_type;
95
96 struct blkcipher_desc {
97         struct crypto_blkcipher *tfm;
98         void *info;
99         u32 flags;
100 };
101
102 struct cipher_desc {
103         struct crypto_tfm *tfm;
104         void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
105         unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
106                              const u8 *src, unsigned int nbytes);
107         void *info;
108 };
109
110 /*
111  * Algorithms: modular crypto algorithm implementations, managed
112  * via crypto_register_alg() and crypto_unregister_alg().
113  */
114 struct blkcipher_alg {
115         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
116                       unsigned int keylen);
117         int (*encrypt)(struct blkcipher_desc *desc,
118                        struct scatterlist *dst, struct scatterlist *src,
119                        unsigned int nbytes);
120         int (*decrypt)(struct blkcipher_desc *desc,
121                        struct scatterlist *dst, struct scatterlist *src,
122                        unsigned int nbytes);
123
124         unsigned int min_keysize;
125         unsigned int max_keysize;
126         unsigned int ivsize;
127 };
128
129 struct cipher_alg {
130         unsigned int cia_min_keysize;
131         unsigned int cia_max_keysize;
132         int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
133                           unsigned int keylen);
134         void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
135         void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
136
137         unsigned int (*cia_encrypt_ecb)(const struct cipher_desc *desc,
138                                         u8 *dst, const u8 *src,
139                                         unsigned int nbytes) __deprecated;
140         unsigned int (*cia_decrypt_ecb)(const struct cipher_desc *desc,
141                                         u8 *dst, const u8 *src,
142                                         unsigned int nbytes) __deprecated;
143         unsigned int (*cia_encrypt_cbc)(const struct cipher_desc *desc,
144                                         u8 *dst, const u8 *src,
145                                         unsigned int nbytes) __deprecated;
146         unsigned int (*cia_decrypt_cbc)(const struct cipher_desc *desc,
147                                         u8 *dst, const u8 *src,
148                                         unsigned int nbytes) __deprecated;
149 };
150
151 struct digest_alg {
152         unsigned int dia_digestsize;
153         void (*dia_init)(struct crypto_tfm *tfm);
154         void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
155                            unsigned int len);
156         void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
157         int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
158                           unsigned int keylen);
159 };
160
161 struct compress_alg {
162         int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
163                             unsigned int slen, u8 *dst, unsigned int *dlen);
164         int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
165                               unsigned int slen, u8 *dst, unsigned int *dlen);
166 };
167
168 #define cra_blkcipher   cra_u.blkcipher
169 #define cra_cipher      cra_u.cipher
170 #define cra_digest      cra_u.digest
171 #define cra_compress    cra_u.compress
172
173 struct crypto_alg {
174         struct list_head cra_list;
175         struct list_head cra_users;
176
177         u32 cra_flags;
178         unsigned int cra_blocksize;
179         unsigned int cra_ctxsize;
180         unsigned int cra_alignmask;
181
182         int cra_priority;
183         atomic_t cra_refcnt;
184
185         char cra_name[CRYPTO_MAX_ALG_NAME];
186         char cra_driver_name[CRYPTO_MAX_ALG_NAME];
187
188         const struct crypto_type *cra_type;
189
190         union {
191                 struct blkcipher_alg blkcipher;
192                 struct cipher_alg cipher;
193                 struct digest_alg digest;
194                 struct compress_alg compress;
195         } cra_u;
196
197         int (*cra_init)(struct crypto_tfm *tfm);
198         void (*cra_exit)(struct crypto_tfm *tfm);
199         void (*cra_destroy)(struct crypto_alg *alg);
200         
201         struct module *cra_module;
202 };
203
204 /*
205  * Algorithm registration interface.
206  */
207 int crypto_register_alg(struct crypto_alg *alg);
208 int crypto_unregister_alg(struct crypto_alg *alg);
209
210 /*
211  * Algorithm query interface.
212  */
213 #ifdef CONFIG_CRYPTO
214 int crypto_alg_available(const char *name, u32 flags);
215 #else
216 static inline int crypto_alg_available(const char *name, u32 flags)
217 {
218         return 0;
219 }
220 #endif
221
222 /*
223  * Transforms: user-instantiated objects which encapsulate algorithms
224  * and core processing logic.  Managed via crypto_alloc_*() and
225  * crypto_free_*(), as well as the various helpers below.
226  */
227
228 struct blkcipher_tfm {
229         void *iv;
230         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
231                       unsigned int keylen);
232         int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
233                        struct scatterlist *src, unsigned int nbytes);
234         int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
235                        struct scatterlist *src, unsigned int nbytes);
236 };
237
238 struct cipher_tfm {
239         void *cit_iv;
240         unsigned int cit_ivsize;
241         u32 cit_mode;
242         int (*cit_setkey)(struct crypto_tfm *tfm,
243                           const u8 *key, unsigned int keylen);
244         int (*cit_encrypt)(struct crypto_tfm *tfm,
245                            struct scatterlist *dst,
246                            struct scatterlist *src,
247                            unsigned int nbytes);
248         int (*cit_encrypt_iv)(struct crypto_tfm *tfm,
249                               struct scatterlist *dst,
250                               struct scatterlist *src,
251                               unsigned int nbytes, u8 *iv);
252         int (*cit_decrypt)(struct crypto_tfm *tfm,
253                            struct scatterlist *dst,
254                            struct scatterlist *src,
255                            unsigned int nbytes);
256         int (*cit_decrypt_iv)(struct crypto_tfm *tfm,
257                            struct scatterlist *dst,
258                            struct scatterlist *src,
259                            unsigned int nbytes, u8 *iv);
260         void (*cit_xor_block)(u8 *dst, const u8 *src);
261         void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
262         void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
263 };
264
265 struct digest_tfm {
266         void (*dit_init)(struct crypto_tfm *tfm);
267         void (*dit_update)(struct crypto_tfm *tfm,
268                            struct scatterlist *sg, unsigned int nsg);
269         void (*dit_final)(struct crypto_tfm *tfm, u8 *out);
270         void (*dit_digest)(struct crypto_tfm *tfm, struct scatterlist *sg,
271                            unsigned int nsg, u8 *out);
272         int (*dit_setkey)(struct crypto_tfm *tfm,
273                           const u8 *key, unsigned int keylen);
274 #ifdef CONFIG_CRYPTO_HMAC
275         void *dit_hmac_block;
276 #endif
277 };
278
279 struct compress_tfm {
280         int (*cot_compress)(struct crypto_tfm *tfm,
281                             const u8 *src, unsigned int slen,
282                             u8 *dst, unsigned int *dlen);
283         int (*cot_decompress)(struct crypto_tfm *tfm,
284                               const u8 *src, unsigned int slen,
285                               u8 *dst, unsigned int *dlen);
286 };
287
288 #define crt_blkcipher   crt_u.blkcipher
289 #define crt_cipher      crt_u.cipher
290 #define crt_digest      crt_u.digest
291 #define crt_compress    crt_u.compress
292
293 struct crypto_tfm {
294
295         u32 crt_flags;
296         
297         union {
298                 struct blkcipher_tfm blkcipher;
299                 struct cipher_tfm cipher;
300                 struct digest_tfm digest;
301                 struct compress_tfm compress;
302         } crt_u;
303         
304         struct crypto_alg *__crt_alg;
305
306         void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
307 };
308
309 #define crypto_cipher crypto_tfm
310
311 struct crypto_blkcipher {
312         struct crypto_tfm base;
313 };
314
315 enum {
316         CRYPTOA_UNSPEC,
317         CRYPTOA_ALG,
318 };
319
320 struct crypto_attr_alg {
321         char name[CRYPTO_MAX_ALG_NAME];
322 };
323
324 /* 
325  * Transform user interface.
326  */
327  
328 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
329 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
330 void crypto_free_tfm(struct crypto_tfm *tfm);
331
332 /*
333  * Transform helpers which query the underlying algorithm.
334  */
335 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
336 {
337         return tfm->__crt_alg->cra_name;
338 }
339
340 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
341 {
342         return tfm->__crt_alg->cra_driver_name;
343 }
344
345 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
346 {
347         return tfm->__crt_alg->cra_priority;
348 }
349
350 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
351 {
352         return module_name(tfm->__crt_alg->cra_module);
353 }
354
355 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
356 {
357         return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
358 }
359
360 static unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
361         __deprecated;
362 static inline unsigned int crypto_tfm_alg_min_keysize(struct crypto_tfm *tfm)
363 {
364         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
365         return tfm->__crt_alg->cra_cipher.cia_min_keysize;
366 }
367
368 static unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm *tfm)
369         __deprecated;
370 static inline unsigned int crypto_tfm_alg_max_keysize(struct crypto_tfm *tfm)
371 {
372         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
373         return tfm->__crt_alg->cra_cipher.cia_max_keysize;
374 }
375
376 static unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm *tfm) __deprecated;
377 static inline unsigned int crypto_tfm_alg_ivsize(struct crypto_tfm *tfm)
378 {
379         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
380         return tfm->crt_cipher.cit_ivsize;
381 }
382
383 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
384 {
385         return tfm->__crt_alg->cra_blocksize;
386 }
387
388 static inline unsigned int crypto_tfm_alg_digestsize(struct crypto_tfm *tfm)
389 {
390         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
391         return tfm->__crt_alg->cra_digest.dia_digestsize;
392 }
393
394 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
395 {
396         return tfm->__crt_alg->cra_alignmask;
397 }
398
399 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
400 {
401         return tfm->crt_flags;
402 }
403
404 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
405 {
406         tfm->crt_flags |= flags;
407 }
408
409 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
410 {
411         tfm->crt_flags &= ~flags;
412 }
413
414 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
415 {
416         return tfm->__crt_ctx;
417 }
418
419 static inline unsigned int crypto_tfm_ctx_alignment(void)
420 {
421         struct crypto_tfm *tfm;
422         return __alignof__(tfm->__crt_ctx);
423 }
424
425 /*
426  * API wrappers.
427  */
428 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
429         struct crypto_tfm *tfm)
430 {
431         return (struct crypto_blkcipher *)tfm;
432 }
433
434 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
435         struct crypto_tfm *tfm)
436 {
437         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
438         return __crypto_blkcipher_cast(tfm);
439 }
440
441 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
442         const char *alg_name, u32 type, u32 mask)
443 {
444         type &= ~CRYPTO_ALG_TYPE_MASK;
445         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
446         mask |= CRYPTO_ALG_TYPE_MASK;
447
448         return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
449 }
450
451 static inline struct crypto_tfm *crypto_blkcipher_tfm(
452         struct crypto_blkcipher *tfm)
453 {
454         return &tfm->base;
455 }
456
457 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
458 {
459         crypto_free_tfm(crypto_blkcipher_tfm(tfm));
460 }
461
462 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
463 {
464         return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
465 }
466
467 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
468         struct crypto_blkcipher *tfm)
469 {
470         return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
471 }
472
473 static inline struct blkcipher_alg *crypto_blkcipher_alg(
474         struct crypto_blkcipher *tfm)
475 {
476         return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
477 }
478
479 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
480 {
481         return crypto_blkcipher_alg(tfm)->ivsize;
482 }
483
484 static inline unsigned int crypto_blkcipher_blocksize(
485         struct crypto_blkcipher *tfm)
486 {
487         return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
488 }
489
490 static inline unsigned int crypto_blkcipher_alignmask(
491         struct crypto_blkcipher *tfm)
492 {
493         return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
494 }
495
496 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
497 {
498         return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
499 }
500
501 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
502                                               u32 flags)
503 {
504         crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
505 }
506
507 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
508                                                 u32 flags)
509 {
510         crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
511 }
512
513 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
514                                           const u8 *key, unsigned int keylen)
515 {
516         return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
517                                                  key, keylen);
518 }
519
520 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
521                                            struct scatterlist *dst,
522                                            struct scatterlist *src,
523                                            unsigned int nbytes)
524 {
525         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
526         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
527 }
528
529 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
530                                               struct scatterlist *dst,
531                                               struct scatterlist *src,
532                                               unsigned int nbytes)
533 {
534         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
535 }
536
537 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
538                                            struct scatterlist *dst,
539                                            struct scatterlist *src,
540                                            unsigned int nbytes)
541 {
542         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
543         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
544 }
545
546 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
547                                               struct scatterlist *dst,
548                                               struct scatterlist *src,
549                                               unsigned int nbytes)
550 {
551         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
552 }
553
554 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
555                                            const u8 *src, unsigned int len)
556 {
557         memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
558 }
559
560 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
561                                            u8 *dst, unsigned int len)
562 {
563         memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
564 }
565
566 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
567 {
568         return (struct crypto_cipher *)tfm;
569 }
570
571 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
572 {
573         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
574         return __crypto_cipher_cast(tfm);
575 }
576
577 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
578                                                         u32 type, u32 mask)
579 {
580         type &= ~CRYPTO_ALG_TYPE_MASK;
581         type |= CRYPTO_ALG_TYPE_CIPHER;
582         mask |= CRYPTO_ALG_TYPE_MASK;
583
584         return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
585 }
586
587 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
588 {
589         return tfm;
590 }
591
592 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
593 {
594         crypto_free_tfm(crypto_cipher_tfm(tfm));
595 }
596
597 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
598 {
599         return &crypto_cipher_tfm(tfm)->crt_cipher;
600 }
601
602 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
603 {
604         return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
605 }
606
607 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
608 {
609         return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
610 }
611
612 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
613 {
614         return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
615 }
616
617 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
618                                            u32 flags)
619 {
620         crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
621 }
622
623 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
624                                              u32 flags)
625 {
626         crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
627 }
628
629 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
630                                        const u8 *key, unsigned int keylen)
631 {
632         return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
633                                                   key, keylen);
634 }
635
636 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
637                                              u8 *dst, const u8 *src)
638 {
639         crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
640                                                 dst, src);
641 }
642
643 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
644                                              u8 *dst, const u8 *src)
645 {
646         crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
647                                                 dst, src);
648 }
649
650 static inline void crypto_digest_init(struct crypto_tfm *tfm)
651 {
652         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
653         tfm->crt_digest.dit_init(tfm);
654 }
655
656 static inline void crypto_digest_update(struct crypto_tfm *tfm,
657                                         struct scatterlist *sg,
658                                         unsigned int nsg)
659 {
660         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
661         tfm->crt_digest.dit_update(tfm, sg, nsg);
662 }
663
664 static inline void crypto_digest_final(struct crypto_tfm *tfm, u8 *out)
665 {
666         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
667         tfm->crt_digest.dit_final(tfm, out);
668 }
669
670 static inline void crypto_digest_digest(struct crypto_tfm *tfm,
671                                         struct scatterlist *sg,
672                                         unsigned int nsg, u8 *out)
673 {
674         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
675         tfm->crt_digest.dit_digest(tfm, sg, nsg, out);
676 }
677
678 static inline int crypto_digest_setkey(struct crypto_tfm *tfm,
679                                        const u8 *key, unsigned int keylen)
680 {
681         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_DIGEST);
682         return tfm->crt_digest.dit_setkey(tfm, key, keylen);
683 }
684
685 static int crypto_cipher_encrypt(struct crypto_tfm *tfm,
686                                  struct scatterlist *dst,
687                                  struct scatterlist *src,
688                                  unsigned int nbytes) __deprecated;
689 static inline int crypto_cipher_encrypt(struct crypto_tfm *tfm,
690                                         struct scatterlist *dst,
691                                         struct scatterlist *src,
692                                         unsigned int nbytes)
693 {
694         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
695         return tfm->crt_cipher.cit_encrypt(tfm, dst, src, nbytes);
696 }                                        
697
698 static int crypto_cipher_encrypt_iv(struct crypto_tfm *tfm,
699                                     struct scatterlist *dst,
700                                     struct scatterlist *src,
701                                     unsigned int nbytes, u8 *iv) __deprecated;
702 static inline int crypto_cipher_encrypt_iv(struct crypto_tfm *tfm,
703                                            struct scatterlist *dst,
704                                            struct scatterlist *src,
705                                            unsigned int nbytes, u8 *iv)
706 {
707         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
708         return tfm->crt_cipher.cit_encrypt_iv(tfm, dst, src, nbytes, iv);
709 }                                        
710
711 static int crypto_cipher_decrypt(struct crypto_tfm *tfm,
712                                  struct scatterlist *dst,
713                                  struct scatterlist *src,
714                                  unsigned int nbytes) __deprecated;
715 static inline int crypto_cipher_decrypt(struct crypto_tfm *tfm,
716                                         struct scatterlist *dst,
717                                         struct scatterlist *src,
718                                         unsigned int nbytes)
719 {
720         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
721         return tfm->crt_cipher.cit_decrypt(tfm, dst, src, nbytes);
722 }
723
724 static int crypto_cipher_decrypt_iv(struct crypto_tfm *tfm,
725                                     struct scatterlist *dst,
726                                     struct scatterlist *src,
727                                     unsigned int nbytes, u8 *iv) __deprecated;
728 static inline int crypto_cipher_decrypt_iv(struct crypto_tfm *tfm,
729                                            struct scatterlist *dst,
730                                            struct scatterlist *src,
731                                            unsigned int nbytes, u8 *iv)
732 {
733         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
734         return tfm->crt_cipher.cit_decrypt_iv(tfm, dst, src, nbytes, iv);
735 }
736
737 static void crypto_cipher_set_iv(struct crypto_tfm *tfm,
738                                  const u8 *src, unsigned int len) __deprecated;
739 static inline void crypto_cipher_set_iv(struct crypto_tfm *tfm,
740                                         const u8 *src, unsigned int len)
741 {
742         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
743         memcpy(tfm->crt_cipher.cit_iv, src, len);
744 }
745
746 static void crypto_cipher_get_iv(struct crypto_tfm *tfm,
747                                  u8 *dst, unsigned int len) __deprecated;
748 static inline void crypto_cipher_get_iv(struct crypto_tfm *tfm,
749                                         u8 *dst, unsigned int len)
750 {
751         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
752         memcpy(dst, tfm->crt_cipher.cit_iv, len);
753 }
754
755 static inline int crypto_comp_compress(struct crypto_tfm *tfm,
756                                        const u8 *src, unsigned int slen,
757                                        u8 *dst, unsigned int *dlen)
758 {
759         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_COMPRESS);
760         return tfm->crt_compress.cot_compress(tfm, src, slen, dst, dlen);
761 }
762
763 static inline int crypto_comp_decompress(struct crypto_tfm *tfm,
764                                          const u8 *src, unsigned int slen,
765                                          u8 *dst, unsigned int *dlen)
766 {
767         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_COMPRESS);
768         return tfm->crt_compress.cot_decompress(tfm, src, slen, dst, dlen);
769 }
770
771 /*
772  * HMAC support.
773  */
774 #ifdef CONFIG_CRYPTO_HMAC
775 void crypto_hmac_init(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen);
776 void crypto_hmac_update(struct crypto_tfm *tfm,
777                         struct scatterlist *sg, unsigned int nsg);
778 void crypto_hmac_final(struct crypto_tfm *tfm, u8 *key,
779                        unsigned int *keylen, u8 *out);
780 void crypto_hmac(struct crypto_tfm *tfm, u8 *key, unsigned int *keylen,
781                  struct scatterlist *sg, unsigned int nsg, u8 *out);
782 #endif  /* CONFIG_CRYPTO_HMAC */
783
784 #endif  /* _LINUX_CRYPTO_H */
785