]>
Commit | Line | Data |
---|---|---|
2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * Scatterlist Cryptographic API. | |
4 | * | |
5 | * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> | |
6 | * Copyright (c) 2002 David S. Miller (davem@redhat.com) | |
5cb1454b | 7 | * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> |
1da177e4 LT |
8 | * |
9 | * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no> | |
18735dd8 | 10 | * and Nettle, by Niels Möller. |
1da177e4 LT |
11 | */ |
12 | #ifndef _LINUX_CRYPTO_H | |
13 | #define _LINUX_CRYPTO_H | |
14 | ||
60063497 | 15 | #include <linux/atomic.h> |
1da177e4 | 16 | #include <linux/kernel.h> |
1da177e4 | 17 | #include <linux/list.h> |
187f1882 | 18 | #include <linux/bug.h> |
79911102 | 19 | #include <linux/slab.h> |
1da177e4 | 20 | #include <linux/string.h> |
79911102 | 21 | #include <linux/uaccess.h> |
ada69a16 | 22 | #include <linux/completion.h> |
1da177e4 | 23 | |
5d26a105 KC |
24 | /* |
25 | * Autoloaded crypto modules should only use a prefixed name to avoid allowing | |
26 | * arbitrary modules to be loaded. Loading from userspace may still need the | |
27 | * unprefixed names, so retains those aliases as well. | |
28 | * This uses __MODULE_INFO directly instead of MODULE_ALIAS because pre-4.3 | |
29 | * gcc (e.g. avr32 toolchain) uses __LINE__ for uniqueness, and this macro | |
30 | * expands twice on the same line. Instead, use a separate base name for the | |
31 | * alias. | |
32 | */ | |
33 | #define MODULE_ALIAS_CRYPTO(name) \ | |
34 | __MODULE_INFO(alias, alias_userspace, name); \ | |
35 | __MODULE_INFO(alias, alias_crypto, "crypto-" name) | |
36 | ||
1da177e4 LT |
37 | /* |
38 | * Algorithm masks and types. | |
39 | */ | |
2825982d | 40 | #define CRYPTO_ALG_TYPE_MASK 0x0000000f |
1da177e4 | 41 | #define CRYPTO_ALG_TYPE_CIPHER 0x00000001 |
004a403c LH |
42 | #define CRYPTO_ALG_TYPE_COMPRESS 0x00000002 |
43 | #define CRYPTO_ALG_TYPE_AEAD 0x00000003 | |
4e6c3df4 | 44 | #define CRYPTO_ALG_TYPE_SKCIPHER 0x00000005 |
4e5f2c40 | 45 | #define CRYPTO_ALG_TYPE_KPP 0x00000008 |
2ebda74f | 46 | #define CRYPTO_ALG_TYPE_ACOMPRESS 0x0000000a |
1ab53a77 | 47 | #define CRYPTO_ALG_TYPE_SCOMPRESS 0x0000000b |
17f0f4a4 | 48 | #define CRYPTO_ALG_TYPE_RNG 0x0000000c |
3c339ab8 | 49 | #define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d |
63044c4f GC |
50 | #define CRYPTO_ALG_TYPE_HASH 0x0000000e |
51 | #define CRYPTO_ALG_TYPE_SHASH 0x0000000e | |
52 | #define CRYPTO_ALG_TYPE_AHASH 0x0000000f | |
055bcee3 HX |
53 | |
54 | #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e | |
63044c4f | 55 | #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000e |
1ab53a77 | 56 | #define CRYPTO_ALG_TYPE_ACOMPRESS_MASK 0x0000000e |
1da177e4 | 57 | |
2825982d | 58 | #define CRYPTO_ALG_LARVAL 0x00000010 |
6bfd4809 HX |
59 | #define CRYPTO_ALG_DEAD 0x00000020 |
60 | #define CRYPTO_ALG_DYING 0x00000040 | |
f3f632d6 | 61 | #define CRYPTO_ALG_ASYNC 0x00000080 |
2825982d | 62 | |
6010439f HX |
63 | /* |
64 | * Set this bit if and only if the algorithm requires another algorithm of | |
65 | * the same type to handle corner cases. | |
66 | */ | |
67 | #define CRYPTO_ALG_NEED_FALLBACK 0x00000100 | |
68 | ||
73d3864a HX |
69 | /* |
70 | * Set if the algorithm has passed automated run-time testing. Note that | |
71 | * if there is no run-time testing for a given algorithm it is considered | |
72 | * to have passed. | |
73 | */ | |
74 | ||
75 | #define CRYPTO_ALG_TESTED 0x00000400 | |
76 | ||
64a947b1 | 77 | /* |
864e0981 | 78 | * Set if the algorithm is an instance that is built from templates. |
64a947b1 SK |
79 | */ |
80 | #define CRYPTO_ALG_INSTANCE 0x00000800 | |
81 | ||
d912bb76 NM |
82 | /* Set this bit if the algorithm provided is hardware accelerated but |
83 | * not available to userspace via instruction set or so. | |
84 | */ | |
85 | #define CRYPTO_ALG_KERN_DRIVER_ONLY 0x00001000 | |
86 | ||
06ca7f68 SM |
87 | /* |
88 | * Mark a cipher as a service implementation only usable by another | |
89 | * cipher and never by a normal user of the kernel crypto API | |
90 | */ | |
91 | #define CRYPTO_ALG_INTERNAL 0x00002000 | |
92 | ||
a208fa8f EB |
93 | /* |
94 | * Set if the algorithm has a ->setkey() method but can be used without | |
95 | * calling it first, i.e. there is a default key. | |
96 | */ | |
97 | #define CRYPTO_ALG_OPTIONAL_KEY 0x00004000 | |
98 | ||
e2861fa7 MG |
99 | /* |
100 | * Don't trigger module loading | |
101 | */ | |
102 | #define CRYPTO_NOLOAD 0x00008000 | |
103 | ||
1da177e4 LT |
104 | /* |
105 | * Transform masks and values (for crt_flags). | |
106 | */ | |
9fa68f62 EB |
107 | #define CRYPTO_TFM_NEED_KEY 0x00000001 |
108 | ||
1da177e4 LT |
109 | #define CRYPTO_TFM_REQ_MASK 0x000fff00 |
110 | #define CRYPTO_TFM_RES_MASK 0xfff00000 | |
111 | ||
231baecd | 112 | #define CRYPTO_TFM_REQ_FORBID_WEAK_KEYS 0x00000100 |
64baf3cf | 113 | #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200 |
32e3983f | 114 | #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400 |
1da177e4 LT |
115 | #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000 |
116 | #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000 | |
117 | #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000 | |
118 | #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000 | |
119 | #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000 | |
120 | ||
121 | /* | |
122 | * Miscellaneous stuff. | |
123 | */ | |
f437a3f4 | 124 | #define CRYPTO_MAX_ALG_NAME 128 |
1da177e4 | 125 | |
79911102 HX |
126 | /* |
127 | * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual | |
128 | * declaration) is used to ensure that the crypto_tfm context structure is | |
129 | * aligned correctly for the given architecture so that there are no alignment | |
130 | * faults for C data types. In particular, this is required on platforms such | |
131 | * as arm where pointers are 32-bit aligned but there are data types such as | |
132 | * u64 which require 64-bit alignment. | |
133 | */ | |
79911102 | 134 | #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN |
79911102 | 135 | |
79911102 | 136 | #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN))) |
79911102 | 137 | |
1da177e4 | 138 | struct scatterlist; |
32e3983f | 139 | struct crypto_async_request; |
40725181 | 140 | struct crypto_tfm; |
e853c3cf | 141 | struct crypto_type; |
40725181 | 142 | |
32e3983f HX |
143 | typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err); |
144 | ||
0d7f488f SM |
145 | /** |
146 | * DOC: Block Cipher Context Data Structures | |
147 | * | |
148 | * These data structures define the operating context for each block cipher | |
149 | * type. | |
150 | */ | |
151 | ||
32e3983f HX |
152 | struct crypto_async_request { |
153 | struct list_head list; | |
154 | crypto_completion_t complete; | |
155 | void *data; | |
156 | struct crypto_tfm *tfm; | |
157 | ||
158 | u32 flags; | |
159 | }; | |
160 | ||
0d7f488f SM |
161 | /** |
162 | * DOC: Block Cipher Algorithm Definitions | |
163 | * | |
164 | * These data structures define modular crypto algorithm implementations, | |
165 | * managed via crypto_register_alg() and crypto_unregister_alg(). | |
166 | */ | |
167 | ||
0d7f488f SM |
168 | /** |
169 | * struct cipher_alg - single-block symmetric ciphers definition | |
170 | * @cia_min_keysize: Minimum key size supported by the transformation. This is | |
171 | * the smallest key length supported by this transformation | |
172 | * algorithm. This must be set to one of the pre-defined | |
173 | * values as this is not hardware specific. Possible values | |
174 | * for this field can be found via git grep "_MIN_KEY_SIZE" | |
175 | * include/crypto/ | |
176 | * @cia_max_keysize: Maximum key size supported by the transformation. This is | |
177 | * the largest key length supported by this transformation | |
178 | * algorithm. This must be set to one of the pre-defined values | |
179 | * as this is not hardware specific. Possible values for this | |
180 | * field can be found via git grep "_MAX_KEY_SIZE" | |
181 | * include/crypto/ | |
182 | * @cia_setkey: Set key for the transformation. This function is used to either | |
183 | * program a supplied key into the hardware or store the key in the | |
184 | * transformation context for programming it later. Note that this | |
185 | * function does modify the transformation context. This function | |
186 | * can be called multiple times during the existence of the | |
187 | * transformation object, so one must make sure the key is properly | |
188 | * reprogrammed into the hardware. This function is also | |
189 | * responsible for checking the key length for validity. | |
190 | * @cia_encrypt: Encrypt a single block. This function is used to encrypt a | |
191 | * single block of data, which must be @cra_blocksize big. This | |
192 | * always operates on a full @cra_blocksize and it is not possible | |
193 | * to encrypt a block of smaller size. The supplied buffers must | |
194 | * therefore also be at least of @cra_blocksize size. Both the | |
195 | * input and output buffers are always aligned to @cra_alignmask. | |
196 | * In case either of the input or output buffer supplied by user | |
197 | * of the crypto API is not aligned to @cra_alignmask, the crypto | |
198 | * API will re-align the buffers. The re-alignment means that a | |
199 | * new buffer will be allocated, the data will be copied into the | |
200 | * new buffer, then the processing will happen on the new buffer, | |
201 | * then the data will be copied back into the original buffer and | |
202 | * finally the new buffer will be freed. In case a software | |
203 | * fallback was put in place in the @cra_init call, this function | |
204 | * might need to use the fallback if the algorithm doesn't support | |
205 | * all of the key sizes. In case the key was stored in | |
206 | * transformation context, the key might need to be re-programmed | |
207 | * into the hardware in this function. This function shall not | |
208 | * modify the transformation context, as this function may be | |
209 | * called in parallel with the same transformation object. | |
210 | * @cia_decrypt: Decrypt a single block. This is a reverse counterpart to | |
211 | * @cia_encrypt, and the conditions are exactly the same. | |
212 | * | |
213 | * All fields are mandatory and must be filled. | |
214 | */ | |
1da177e4 LT |
215 | struct cipher_alg { |
216 | unsigned int cia_min_keysize; | |
217 | unsigned int cia_max_keysize; | |
6c2bb98b | 218 | int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key, |
560c06ae | 219 | unsigned int keylen); |
6c2bb98b HX |
220 | void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); |
221 | void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); | |
1da177e4 LT |
222 | }; |
223 | ||
5a35316d HG |
224 | /** |
225 | * struct compress_alg - compression/decompression algorithm | |
226 | * @coa_compress: Compress a buffer of specified length, storing the resulting | |
227 | * data in the specified buffer. Return the length of the | |
228 | * compressed data in dlen. | |
229 | * @coa_decompress: Decompress the source buffer, storing the uncompressed | |
230 | * data in the specified buffer. The length of the data is | |
231 | * returned in dlen. | |
232 | * | |
233 | * All fields are mandatory. | |
234 | */ | |
1da177e4 | 235 | struct compress_alg { |
6c2bb98b HX |
236 | int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src, |
237 | unsigned int slen, u8 *dst, unsigned int *dlen); | |
238 | int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src, | |
239 | unsigned int slen, u8 *dst, unsigned int *dlen); | |
1da177e4 LT |
240 | }; |
241 | ||
17c18f9e CL |
242 | #ifdef CONFIG_CRYPTO_STATS |
243 | /* | |
244 | * struct crypto_istat_aead - statistics for AEAD algorithm | |
245 | * @encrypt_cnt: number of encrypt requests | |
246 | * @encrypt_tlen: total data size handled by encrypt requests | |
247 | * @decrypt_cnt: number of decrypt requests | |
248 | * @decrypt_tlen: total data size handled by decrypt requests | |
44f13133 | 249 | * @err_cnt: number of error for AEAD requests |
17c18f9e CL |
250 | */ |
251 | struct crypto_istat_aead { | |
252 | atomic64_t encrypt_cnt; | |
253 | atomic64_t encrypt_tlen; | |
254 | atomic64_t decrypt_cnt; | |
255 | atomic64_t decrypt_tlen; | |
44f13133 | 256 | atomic64_t err_cnt; |
17c18f9e CL |
257 | }; |
258 | ||
259 | /* | |
260 | * struct crypto_istat_akcipher - statistics for akcipher algorithm | |
261 | * @encrypt_cnt: number of encrypt requests | |
262 | * @encrypt_tlen: total data size handled by encrypt requests | |
263 | * @decrypt_cnt: number of decrypt requests | |
264 | * @decrypt_tlen: total data size handled by decrypt requests | |
265 | * @verify_cnt: number of verify operation | |
266 | * @sign_cnt: number of sign requests | |
44f13133 | 267 | * @err_cnt: number of error for akcipher requests |
17c18f9e CL |
268 | */ |
269 | struct crypto_istat_akcipher { | |
270 | atomic64_t encrypt_cnt; | |
271 | atomic64_t encrypt_tlen; | |
272 | atomic64_t decrypt_cnt; | |
273 | atomic64_t decrypt_tlen; | |
274 | atomic64_t verify_cnt; | |
275 | atomic64_t sign_cnt; | |
44f13133 | 276 | atomic64_t err_cnt; |
17c18f9e CL |
277 | }; |
278 | ||
279 | /* | |
280 | * struct crypto_istat_cipher - statistics for cipher algorithm | |
281 | * @encrypt_cnt: number of encrypt requests | |
282 | * @encrypt_tlen: total data size handled by encrypt requests | |
283 | * @decrypt_cnt: number of decrypt requests | |
284 | * @decrypt_tlen: total data size handled by decrypt requests | |
44f13133 | 285 | * @err_cnt: number of error for cipher requests |
17c18f9e CL |
286 | */ |
287 | struct crypto_istat_cipher { | |
288 | atomic64_t encrypt_cnt; | |
289 | atomic64_t encrypt_tlen; | |
290 | atomic64_t decrypt_cnt; | |
291 | atomic64_t decrypt_tlen; | |
44f13133 | 292 | atomic64_t err_cnt; |
17c18f9e CL |
293 | }; |
294 | ||
295 | /* | |
296 | * struct crypto_istat_compress - statistics for compress algorithm | |
297 | * @compress_cnt: number of compress requests | |
298 | * @compress_tlen: total data size handled by compress requests | |
299 | * @decompress_cnt: number of decompress requests | |
300 | * @decompress_tlen: total data size handled by decompress requests | |
44f13133 | 301 | * @err_cnt: number of error for compress requests |
17c18f9e CL |
302 | */ |
303 | struct crypto_istat_compress { | |
304 | atomic64_t compress_cnt; | |
305 | atomic64_t compress_tlen; | |
306 | atomic64_t decompress_cnt; | |
307 | atomic64_t decompress_tlen; | |
44f13133 | 308 | atomic64_t err_cnt; |
17c18f9e CL |
309 | }; |
310 | ||
311 | /* | |
312 | * struct crypto_istat_hash - statistics for has algorithm | |
313 | * @hash_cnt: number of hash requests | |
314 | * @hash_tlen: total data size hashed | |
44f13133 | 315 | * @err_cnt: number of error for hash requests |
17c18f9e CL |
316 | */ |
317 | struct crypto_istat_hash { | |
318 | atomic64_t hash_cnt; | |
319 | atomic64_t hash_tlen; | |
44f13133 | 320 | atomic64_t err_cnt; |
17c18f9e CL |
321 | }; |
322 | ||
323 | /* | |
324 | * struct crypto_istat_kpp - statistics for KPP algorithm | |
325 | * @setsecret_cnt: number of setsecrey operation | |
326 | * @generate_public_key_cnt: number of generate_public_key operation | |
327 | * @compute_shared_secret_cnt: number of compute_shared_secret operation | |
44f13133 | 328 | * @err_cnt: number of error for KPP requests |
17c18f9e CL |
329 | */ |
330 | struct crypto_istat_kpp { | |
331 | atomic64_t setsecret_cnt; | |
332 | atomic64_t generate_public_key_cnt; | |
333 | atomic64_t compute_shared_secret_cnt; | |
44f13133 | 334 | atomic64_t err_cnt; |
17c18f9e CL |
335 | }; |
336 | ||
337 | /* | |
338 | * struct crypto_istat_rng: statistics for RNG algorithm | |
339 | * @generate_cnt: number of RNG generate requests | |
340 | * @generate_tlen: total data size of generated data by the RNG | |
341 | * @seed_cnt: number of times the RNG was seeded | |
44f13133 | 342 | * @err_cnt: number of error for RNG requests |
17c18f9e CL |
343 | */ |
344 | struct crypto_istat_rng { | |
345 | atomic64_t generate_cnt; | |
346 | atomic64_t generate_tlen; | |
347 | atomic64_t seed_cnt; | |
44f13133 | 348 | atomic64_t err_cnt; |
17c18f9e CL |
349 | }; |
350 | #endif /* CONFIG_CRYPTO_STATS */ | |
17f0f4a4 | 351 | |
1da177e4 | 352 | #define cra_cipher cra_u.cipher |
1da177e4 LT |
353 | #define cra_compress cra_u.compress |
354 | ||
0d7f488f SM |
355 | /** |
356 | * struct crypto_alg - definition of a cryptograpic cipher algorithm | |
357 | * @cra_flags: Flags describing this transformation. See include/linux/crypto.h | |
358 | * CRYPTO_ALG_* flags for the flags which go in here. Those are | |
359 | * used for fine-tuning the description of the transformation | |
360 | * algorithm. | |
361 | * @cra_blocksize: Minimum block size of this transformation. The size in bytes | |
362 | * of the smallest possible unit which can be transformed with | |
363 | * this algorithm. The users must respect this value. | |
364 | * In case of HASH transformation, it is possible for a smaller | |
365 | * block than @cra_blocksize to be passed to the crypto API for | |
366 | * transformation, in case of any other transformation type, an | |
367 | * error will be returned upon any attempt to transform smaller | |
368 | * than @cra_blocksize chunks. | |
369 | * @cra_ctxsize: Size of the operational context of the transformation. This | |
370 | * value informs the kernel crypto API about the memory size | |
371 | * needed to be allocated for the transformation context. | |
372 | * @cra_alignmask: Alignment mask for the input and output data buffer. The data | |
373 | * buffer containing the input data for the algorithm must be | |
374 | * aligned to this alignment mask. The data buffer for the | |
375 | * output data must be aligned to this alignment mask. Note that | |
376 | * the Crypto API will do the re-alignment in software, but | |
377 | * only under special conditions and there is a performance hit. | |
378 | * The re-alignment happens at these occasions for different | |
379 | * @cra_u types: cipher -- For both input data and output data | |
380 | * buffer; ahash -- For output hash destination buf; shash -- | |
381 | * For output hash destination buf. | |
382 | * This is needed on hardware which is flawed by design and | |
383 | * cannot pick data from arbitrary addresses. | |
384 | * @cra_priority: Priority of this transformation implementation. In case | |
385 | * multiple transformations with same @cra_name are available to | |
386 | * the Crypto API, the kernel will use the one with highest | |
387 | * @cra_priority. | |
388 | * @cra_name: Generic name (usable by multiple implementations) of the | |
389 | * transformation algorithm. This is the name of the transformation | |
390 | * itself. This field is used by the kernel when looking up the | |
391 | * providers of particular transformation. | |
392 | * @cra_driver_name: Unique name of the transformation provider. This is the | |
393 | * name of the provider of the transformation. This can be any | |
394 | * arbitrary value, but in the usual case, this contains the | |
395 | * name of the chip or provider and the name of the | |
396 | * transformation algorithm. | |
397 | * @cra_type: Type of the cryptographic transformation. This is a pointer to | |
398 | * struct crypto_type, which implements callbacks common for all | |
c65058b7 EB |
399 | * transformation types. There are multiple options, such as |
400 | * &crypto_skcipher_type, &crypto_ahash_type, &crypto_rng_type. | |
0d7f488f SM |
401 | * This field might be empty. In that case, there are no common |
402 | * callbacks. This is the case for: cipher, compress, shash. | |
403 | * @cra_u: Callbacks implementing the transformation. This is a union of | |
404 | * multiple structures. Depending on the type of transformation selected | |
405 | * by @cra_type and @cra_flags above, the associated structure must be | |
406 | * filled with callbacks. This field might be empty. This is the case | |
407 | * for ahash, shash. | |
408 | * @cra_init: Initialize the cryptographic transformation object. This function | |
409 | * is used to initialize the cryptographic transformation object. | |
410 | * This function is called only once at the instantiation time, right | |
411 | * after the transformation context was allocated. In case the | |
412 | * cryptographic hardware has some special requirements which need to | |
413 | * be handled by software, this function shall check for the precise | |
414 | * requirement of the transformation and put any software fallbacks | |
415 | * in place. | |
416 | * @cra_exit: Deinitialize the cryptographic transformation object. This is a | |
417 | * counterpart to @cra_init, used to remove various changes set in | |
418 | * @cra_init. | |
0063ec44 GH |
419 | * @cra_u.cipher: Union member which contains a single-block symmetric cipher |
420 | * definition. See @struct @cipher_alg. | |
421 | * @cra_u.compress: Union member which contains a (de)compression algorithm. | |
422 | * See @struct @compress_alg. | |
0d7f488f SM |
423 | * @cra_module: Owner of this transformation implementation. Set to THIS_MODULE |
424 | * @cra_list: internally used | |
425 | * @cra_users: internally used | |
426 | * @cra_refcnt: internally used | |
427 | * @cra_destroy: internally used | |
428 | * | |
17c18f9e | 429 | * @stats: union of all possible crypto_istat_xxx structures |
bfad6cb3 CL |
430 | * @stats.aead: statistics for AEAD algorithm |
431 | * @stats.akcipher: statistics for akcipher algorithm | |
432 | * @stats.cipher: statistics for cipher algorithm | |
433 | * @stats.compress: statistics for compress algorithm | |
434 | * @stats.hash: statistics for hash algorithm | |
435 | * @stats.rng: statistics for rng algorithm | |
436 | * @stats.kpp: statistics for KPP algorithm | |
cac5818c | 437 | * |
0d7f488f SM |
438 | * The struct crypto_alg describes a generic Crypto API algorithm and is common |
439 | * for all of the transformations. Any variable not documented here shall not | |
440 | * be used by a cipher implementation as it is internal to the Crypto API. | |
441 | */ | |
1da177e4 LT |
442 | struct crypto_alg { |
443 | struct list_head cra_list; | |
6bfd4809 HX |
444 | struct list_head cra_users; |
445 | ||
1da177e4 LT |
446 | u32 cra_flags; |
447 | unsigned int cra_blocksize; | |
448 | unsigned int cra_ctxsize; | |
95477377 | 449 | unsigned int cra_alignmask; |
5cb1454b HX |
450 | |
451 | int cra_priority; | |
ce8614a3 | 452 | refcount_t cra_refcnt; |
5cb1454b | 453 | |
d913ea0d HX |
454 | char cra_name[CRYPTO_MAX_ALG_NAME]; |
455 | char cra_driver_name[CRYPTO_MAX_ALG_NAME]; | |
1da177e4 | 456 | |
e853c3cf HX |
457 | const struct crypto_type *cra_type; |
458 | ||
1da177e4 LT |
459 | union { |
460 | struct cipher_alg cipher; | |
1da177e4 LT |
461 | struct compress_alg compress; |
462 | } cra_u; | |
c7fc0599 HX |
463 | |
464 | int (*cra_init)(struct crypto_tfm *tfm); | |
465 | void (*cra_exit)(struct crypto_tfm *tfm); | |
6521f302 | 466 | void (*cra_destroy)(struct crypto_alg *alg); |
1da177e4 LT |
467 | |
468 | struct module *cra_module; | |
cac5818c | 469 | |
2ced2607 | 470 | #ifdef CONFIG_CRYPTO_STATS |
cac5818c | 471 | union { |
17c18f9e CL |
472 | struct crypto_istat_aead aead; |
473 | struct crypto_istat_akcipher akcipher; | |
474 | struct crypto_istat_cipher cipher; | |
475 | struct crypto_istat_compress compress; | |
476 | struct crypto_istat_hash hash; | |
477 | struct crypto_istat_rng rng; | |
478 | struct crypto_istat_kpp kpp; | |
479 | } stats; | |
2ced2607 | 480 | #endif /* CONFIG_CRYPTO_STATS */ |
cac5818c | 481 | |
edf18b91 | 482 | } CRYPTO_MINALIGN_ATTR; |
1da177e4 | 483 | |
f7d76e05 | 484 | #ifdef CONFIG_CRYPTO_STATS |
1f6669b9 | 485 | void crypto_stats_init(struct crypto_alg *alg); |
f7d76e05 | 486 | void crypto_stats_get(struct crypto_alg *alg); |
f7d76e05 CL |
487 | void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret); |
488 | void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret); | |
489 | void crypto_stats_ahash_update(unsigned int nbytes, int ret, struct crypto_alg *alg); | |
490 | void crypto_stats_ahash_final(unsigned int nbytes, int ret, struct crypto_alg *alg); | |
491 | void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, struct crypto_alg *alg); | |
492 | void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, struct crypto_alg *alg); | |
493 | void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg); | |
494 | void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg); | |
495 | void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg); | |
496 | void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg); | |
497 | void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret); | |
498 | void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret); | |
499 | void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret); | |
500 | void crypto_stats_rng_seed(struct crypto_alg *alg, int ret); | |
501 | void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, int ret); | |
502 | void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg); | |
503 | void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg); | |
504 | #else | |
1f6669b9 CL |
505 | static inline void crypto_stats_init(struct crypto_alg *alg) |
506 | {} | |
f7d76e05 CL |
507 | static inline void crypto_stats_get(struct crypto_alg *alg) |
508 | {} | |
f7d76e05 CL |
509 | static inline void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret) |
510 | {} | |
511 | static inline void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret) | |
512 | {} | |
513 | static inline void crypto_stats_ahash_update(unsigned int nbytes, int ret, struct crypto_alg *alg) | |
514 | {} | |
515 | static inline void crypto_stats_ahash_final(unsigned int nbytes, int ret, struct crypto_alg *alg) | |
516 | {} | |
517 | static inline void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, struct crypto_alg *alg) | |
518 | {} | |
519 | static inline void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, struct crypto_alg *alg) | |
520 | {} | |
521 | static inline void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg) | |
522 | {} | |
523 | static inline void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg) | |
524 | {} | |
525 | static inline void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg) | |
526 | {} | |
527 | static inline void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg) | |
528 | {} | |
529 | static inline void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret) | |
530 | {} | |
531 | static inline void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret) | |
532 | {} | |
533 | static inline void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret) | |
534 | {} | |
535 | static inline void crypto_stats_rng_seed(struct crypto_alg *alg, int ret) | |
536 | {} | |
537 | static inline void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, int ret) | |
538 | {} | |
539 | static inline void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg) | |
540 | {} | |
541 | static inline void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg) | |
542 | {} | |
543 | #endif | |
ada69a16 GBY |
544 | /* |
545 | * A helper struct for waiting for completion of async crypto ops | |
546 | */ | |
547 | struct crypto_wait { | |
548 | struct completion completion; | |
549 | int err; | |
550 | }; | |
551 | ||
552 | /* | |
553 | * Macro for declaring a crypto op async wait object on stack | |
554 | */ | |
555 | #define DECLARE_CRYPTO_WAIT(_wait) \ | |
556 | struct crypto_wait _wait = { \ | |
557 | COMPLETION_INITIALIZER_ONSTACK((_wait).completion), 0 } | |
558 | ||
559 | /* | |
560 | * Async ops completion helper functioons | |
561 | */ | |
562 | void crypto_req_done(struct crypto_async_request *req, int err); | |
563 | ||
564 | static inline int crypto_wait_req(int err, struct crypto_wait *wait) | |
565 | { | |
566 | switch (err) { | |
567 | case -EINPROGRESS: | |
568 | case -EBUSY: | |
569 | wait_for_completion(&wait->completion); | |
570 | reinit_completion(&wait->completion); | |
571 | err = wait->err; | |
572 | break; | |
573 | }; | |
574 | ||
575 | return err; | |
576 | } | |
577 | ||
578 | static inline void crypto_init_wait(struct crypto_wait *wait) | |
579 | { | |
580 | init_completion(&wait->completion); | |
581 | } | |
582 | ||
1da177e4 LT |
583 | /* |
584 | * Algorithm registration interface. | |
585 | */ | |
586 | int crypto_register_alg(struct crypto_alg *alg); | |
c6d633a9 | 587 | void crypto_unregister_alg(struct crypto_alg *alg); |
4b004346 | 588 | int crypto_register_algs(struct crypto_alg *algs, int count); |
c6d633a9 | 589 | void crypto_unregister_algs(struct crypto_alg *algs, int count); |
1da177e4 LT |
590 | |
591 | /* | |
592 | * Algorithm query interface. | |
593 | */ | |
fce32d70 | 594 | int crypto_has_alg(const char *name, u32 type, u32 mask); |
1da177e4 LT |
595 | |
596 | /* | |
597 | * Transforms: user-instantiated objects which encapsulate algorithms | |
6d7d684d HX |
598 | * and core processing logic. Managed via crypto_alloc_*() and |
599 | * crypto_free_*(), as well as the various helpers below. | |
1da177e4 | 600 | */ |
1da177e4 | 601 | |
1da177e4 LT |
602 | struct crypto_tfm { |
603 | ||
604 | u32 crt_flags; | |
605 | ||
4a779486 | 606 | void (*exit)(struct crypto_tfm *tfm); |
1da177e4 LT |
607 | |
608 | struct crypto_alg *__crt_alg; | |
f10b7897 | 609 | |
79911102 | 610 | void *__crt_ctx[] CRYPTO_MINALIGN_ATTR; |
1da177e4 LT |
611 | }; |
612 | ||
78a1fe4f HX |
613 | struct crypto_cipher { |
614 | struct crypto_tfm base; | |
615 | }; | |
616 | ||
617 | struct crypto_comp { | |
618 | struct crypto_tfm base; | |
619 | }; | |
620 | ||
2b8c19db HX |
621 | enum { |
622 | CRYPTOA_UNSPEC, | |
623 | CRYPTOA_ALG, | |
ebc610e5 | 624 | CRYPTOA_TYPE, |
39e1ee01 | 625 | CRYPTOA_U32, |
ebc610e5 | 626 | __CRYPTOA_MAX, |
2b8c19db HX |
627 | }; |
628 | ||
ebc610e5 HX |
629 | #define CRYPTOA_MAX (__CRYPTOA_MAX - 1) |
630 | ||
39e1ee01 HX |
631 | /* Maximum number of (rtattr) parameters for each template. */ |
632 | #define CRYPTO_MAX_ATTRS 32 | |
633 | ||
2b8c19db HX |
634 | struct crypto_attr_alg { |
635 | char name[CRYPTO_MAX_ALG_NAME]; | |
636 | }; | |
637 | ||
ebc610e5 HX |
638 | struct crypto_attr_type { |
639 | u32 type; | |
640 | u32 mask; | |
641 | }; | |
642 | ||
39e1ee01 HX |
643 | struct crypto_attr_u32 { |
644 | u32 num; | |
645 | }; | |
646 | ||
1da177e4 LT |
647 | /* |
648 | * Transform user interface. | |
649 | */ | |
650 | ||
6d7d684d | 651 | struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask); |
7b2cd92a HX |
652 | void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm); |
653 | ||
654 | static inline void crypto_free_tfm(struct crypto_tfm *tfm) | |
655 | { | |
656 | return crypto_destroy_tfm(tfm, tfm); | |
657 | } | |
1da177e4 | 658 | |
da7f033d HX |
659 | int alg_test(const char *driver, const char *alg, u32 type, u32 mask); |
660 | ||
1da177e4 LT |
661 | /* |
662 | * Transform helpers which query the underlying algorithm. | |
663 | */ | |
664 | static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm) | |
665 | { | |
666 | return tfm->__crt_alg->cra_name; | |
667 | } | |
668 | ||
b14cdd67 ML |
669 | static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm) |
670 | { | |
671 | return tfm->__crt_alg->cra_driver_name; | |
672 | } | |
673 | ||
674 | static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm) | |
675 | { | |
676 | return tfm->__crt_alg->cra_priority; | |
677 | } | |
678 | ||
1da177e4 LT |
679 | static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm) |
680 | { | |
681 | return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK; | |
682 | } | |
683 | ||
1da177e4 LT |
684 | static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm) |
685 | { | |
686 | return tfm->__crt_alg->cra_blocksize; | |
687 | } | |
688 | ||
fbdae9f3 HX |
689 | static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm) |
690 | { | |
691 | return tfm->__crt_alg->cra_alignmask; | |
692 | } | |
693 | ||
f28776a3 HX |
694 | static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm) |
695 | { | |
696 | return tfm->crt_flags; | |
697 | } | |
698 | ||
699 | static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags) | |
700 | { | |
701 | tfm->crt_flags |= flags; | |
702 | } | |
703 | ||
704 | static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags) | |
705 | { | |
706 | tfm->crt_flags &= ~flags; | |
707 | } | |
708 | ||
40725181 HX |
709 | static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm) |
710 | { | |
f10b7897 HX |
711 | return tfm->__crt_ctx; |
712 | } | |
713 | ||
714 | static inline unsigned int crypto_tfm_ctx_alignment(void) | |
715 | { | |
716 | struct crypto_tfm *tfm; | |
717 | return __alignof__(tfm->__crt_ctx); | |
40725181 HX |
718 | } |
719 | ||
16e61030 SM |
720 | /** |
721 | * DOC: Single Block Cipher API | |
722 | * | |
723 | * The single block cipher API is used with the ciphers of type | |
724 | * CRYPTO_ALG_TYPE_CIPHER (listed as type "cipher" in /proc/crypto). | |
725 | * | |
726 | * Using the single block cipher API calls, operations with the basic cipher | |
727 | * primitive can be implemented. These cipher primitives exclude any block | |
728 | * chaining operations including IV handling. | |
729 | * | |
730 | * The purpose of this single block cipher API is to support the implementation | |
731 | * of templates or other concepts that only need to perform the cipher operation | |
732 | * on one block at a time. Templates invoke the underlying cipher primitive | |
733 | * block-wise and process either the input or the output data of these cipher | |
734 | * operations. | |
735 | */ | |
736 | ||
f28776a3 HX |
737 | static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm) |
738 | { | |
739 | return (struct crypto_cipher *)tfm; | |
740 | } | |
741 | ||
16e61030 SM |
742 | /** |
743 | * crypto_alloc_cipher() - allocate single block cipher handle | |
744 | * @alg_name: is the cra_name / name or cra_driver_name / driver name of the | |
745 | * single block cipher | |
746 | * @type: specifies the type of the cipher | |
747 | * @mask: specifies the mask for the cipher | |
748 | * | |
749 | * Allocate a cipher handle for a single block cipher. The returned struct | |
750 | * crypto_cipher is the cipher handle that is required for any subsequent API | |
751 | * invocation for that single block cipher. | |
752 | * | |
753 | * Return: allocated cipher handle in case of success; IS_ERR() is true in case | |
754 | * of an error, PTR_ERR() returns the error code. | |
755 | */ | |
f28776a3 HX |
756 | static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name, |
757 | u32 type, u32 mask) | |
758 | { | |
759 | type &= ~CRYPTO_ALG_TYPE_MASK; | |
760 | type |= CRYPTO_ALG_TYPE_CIPHER; | |
761 | mask |= CRYPTO_ALG_TYPE_MASK; | |
762 | ||
763 | return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask)); | |
764 | } | |
765 | ||
766 | static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm) | |
767 | { | |
78a1fe4f | 768 | return &tfm->base; |
f28776a3 HX |
769 | } |
770 | ||
16e61030 SM |
771 | /** |
772 | * crypto_free_cipher() - zeroize and free the single block cipher handle | |
773 | * @tfm: cipher handle to be freed | |
774 | */ | |
f28776a3 HX |
775 | static inline void crypto_free_cipher(struct crypto_cipher *tfm) |
776 | { | |
777 | crypto_free_tfm(crypto_cipher_tfm(tfm)); | |
778 | } | |
779 | ||
16e61030 SM |
780 | /** |
781 | * crypto_has_cipher() - Search for the availability of a single block cipher | |
782 | * @alg_name: is the cra_name / name or cra_driver_name / driver name of the | |
783 | * single block cipher | |
784 | * @type: specifies the type of the cipher | |
785 | * @mask: specifies the mask for the cipher | |
786 | * | |
787 | * Return: true when the single block cipher is known to the kernel crypto API; | |
788 | * false otherwise | |
789 | */ | |
fce32d70 HX |
790 | static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask) |
791 | { | |
792 | type &= ~CRYPTO_ALG_TYPE_MASK; | |
793 | type |= CRYPTO_ALG_TYPE_CIPHER; | |
794 | mask |= CRYPTO_ALG_TYPE_MASK; | |
795 | ||
796 | return crypto_has_alg(alg_name, type, mask); | |
797 | } | |
798 | ||
16e61030 SM |
799 | /** |
800 | * crypto_cipher_blocksize() - obtain block size for cipher | |
801 | * @tfm: cipher handle | |
802 | * | |
803 | * The block size for the single block cipher referenced with the cipher handle | |
804 | * tfm is returned. The caller may use that information to allocate appropriate | |
805 | * memory for the data returned by the encryption or decryption operation | |
806 | * | |
807 | * Return: block size of cipher | |
808 | */ | |
f28776a3 HX |
809 | static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm) |
810 | { | |
811 | return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm)); | |
812 | } | |
813 | ||
814 | static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm) | |
815 | { | |
816 | return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm)); | |
817 | } | |
818 | ||
819 | static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm) | |
820 | { | |
821 | return crypto_tfm_get_flags(crypto_cipher_tfm(tfm)); | |
822 | } | |
823 | ||
824 | static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm, | |
825 | u32 flags) | |
826 | { | |
827 | crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags); | |
828 | } | |
829 | ||
830 | static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm, | |
831 | u32 flags) | |
832 | { | |
833 | crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags); | |
834 | } | |
835 | ||
16e61030 SM |
836 | /** |
837 | * crypto_cipher_setkey() - set key for cipher | |
838 | * @tfm: cipher handle | |
839 | * @key: buffer holding the key | |
840 | * @keylen: length of the key in bytes | |
841 | * | |
842 | * The caller provided key is set for the single block cipher referenced by the | |
843 | * cipher handle. | |
844 | * | |
845 | * Note, the key length determines the cipher type. Many block ciphers implement | |
846 | * different cipher modes depending on the key size, such as AES-128 vs AES-192 | |
847 | * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128 | |
848 | * is performed. | |
849 | * | |
850 | * Return: 0 if the setting of the key was successful; < 0 if an error occurred | |
851 | */ | |
e8cfed5e EB |
852 | int crypto_cipher_setkey(struct crypto_cipher *tfm, |
853 | const u8 *key, unsigned int keylen); | |
7226bc87 | 854 | |
16e61030 SM |
855 | /** |
856 | * crypto_cipher_encrypt_one() - encrypt one block of plaintext | |
857 | * @tfm: cipher handle | |
858 | * @dst: points to the buffer that will be filled with the ciphertext | |
859 | * @src: buffer holding the plaintext to be encrypted | |
860 | * | |
861 | * Invoke the encryption operation of one block. The caller must ensure that | |
862 | * the plaintext and ciphertext buffers are at least one block in size. | |
863 | */ | |
e8cfed5e EB |
864 | void crypto_cipher_encrypt_one(struct crypto_cipher *tfm, |
865 | u8 *dst, const u8 *src); | |
f28776a3 | 866 | |
16e61030 SM |
867 | /** |
868 | * crypto_cipher_decrypt_one() - decrypt one block of ciphertext | |
869 | * @tfm: cipher handle | |
870 | * @dst: points to the buffer that will be filled with the plaintext | |
871 | * @src: buffer holding the ciphertext to be decrypted | |
872 | * | |
873 | * Invoke the decryption operation of one block. The caller must ensure that | |
874 | * the plaintext and ciphertext buffers are at least one block in size. | |
875 | */ | |
e8cfed5e EB |
876 | void crypto_cipher_decrypt_one(struct crypto_cipher *tfm, |
877 | u8 *dst, const u8 *src); | |
f28776a3 | 878 | |
fce32d70 HX |
879 | static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm) |
880 | { | |
881 | return (struct crypto_comp *)tfm; | |
882 | } | |
883 | ||
fce32d70 HX |
884 | static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name, |
885 | u32 type, u32 mask) | |
886 | { | |
887 | type &= ~CRYPTO_ALG_TYPE_MASK; | |
888 | type |= CRYPTO_ALG_TYPE_COMPRESS; | |
889 | mask |= CRYPTO_ALG_TYPE_MASK; | |
890 | ||
891 | return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask)); | |
892 | } | |
893 | ||
894 | static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm) | |
895 | { | |
78a1fe4f | 896 | return &tfm->base; |
fce32d70 HX |
897 | } |
898 | ||
899 | static inline void crypto_free_comp(struct crypto_comp *tfm) | |
900 | { | |
901 | crypto_free_tfm(crypto_comp_tfm(tfm)); | |
902 | } | |
903 | ||
904 | static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask) | |
905 | { | |
906 | type &= ~CRYPTO_ALG_TYPE_MASK; | |
907 | type |= CRYPTO_ALG_TYPE_COMPRESS; | |
908 | mask |= CRYPTO_ALG_TYPE_MASK; | |
909 | ||
910 | return crypto_has_alg(alg_name, type, mask); | |
911 | } | |
912 | ||
e4d5b79c HX |
913 | static inline const char *crypto_comp_name(struct crypto_comp *tfm) |
914 | { | |
915 | return crypto_tfm_alg_name(crypto_comp_tfm(tfm)); | |
916 | } | |
917 | ||
c441a909 EB |
918 | int crypto_comp_compress(struct crypto_comp *tfm, |
919 | const u8 *src, unsigned int slen, | |
920 | u8 *dst, unsigned int *dlen); | |
1da177e4 | 921 | |
c441a909 EB |
922 | int crypto_comp_decompress(struct crypto_comp *tfm, |
923 | const u8 *src, unsigned int slen, | |
924 | u8 *dst, unsigned int *dlen); | |
1da177e4 | 925 | |
1da177e4 LT |
926 | #endif /* _LINUX_CRYPTO_H */ |
927 |