Blame view
include/linux/crypto.h
54.7 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 5 |
/* * Scatterlist Cryptographic API. * * Copyright (c) 2002 James Morris <jmorris@intercode.com.au> * Copyright (c) 2002 David S. Miller (davem@redhat.com) |
5cb1454b8 [CRYPTO] Allow mu... |
6 |
* Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au> |
1da177e4c Linux-2.6.12-rc2 |
7 8 |
* * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no> |
18735dd8d crypto: convert c... |
9 |
* and Nettle, by Niels Möller. |
1da177e4c Linux-2.6.12-rc2 |
10 11 12 13 14 15 16 17 18 |
* * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ #ifndef _LINUX_CRYPTO_H #define _LINUX_CRYPTO_H |
60063497a atomic: use <linu... |
19 |
#include <linux/atomic.h> |
1da177e4c Linux-2.6.12-rc2 |
20 |
#include <linux/kernel.h> |
1da177e4c Linux-2.6.12-rc2 |
21 |
#include <linux/list.h> |
187f1882b BUG: headers with... |
22 |
#include <linux/bug.h> |
799111020 [CRYPTO] api: Fix... |
23 |
#include <linux/slab.h> |
1da177e4c Linux-2.6.12-rc2 |
24 |
#include <linux/string.h> |
799111020 [CRYPTO] api: Fix... |
25 |
#include <linux/uaccess.h> |
1da177e4c Linux-2.6.12-rc2 |
26 27 |
/* |
5d26a105b crypto: prefix mo... |
28 29 30 31 32 33 34 35 36 37 38 39 40 |
* Autoloaded crypto modules should only use a prefixed name to avoid allowing * arbitrary modules to be loaded. Loading from userspace may still need the * unprefixed names, so retains those aliases as well. * This uses __MODULE_INFO directly instead of MODULE_ALIAS because pre-4.3 * gcc (e.g. avr32 toolchain) uses __LINE__ for uniqueness, and this macro * expands twice on the same line. Instead, use a separate base name for the * alias. */ #define MODULE_ALIAS_CRYPTO(name) \ __MODULE_INFO(alias, alias_userspace, name); \ __MODULE_INFO(alias, alias_crypto, "crypto-" name) /* |
1da177e4c Linux-2.6.12-rc2 |
41 42 |
* Algorithm masks and types. */ |
2825982d9 [CRYPTO] api: Add... |
43 |
#define CRYPTO_ALG_TYPE_MASK 0x0000000f |
1da177e4c Linux-2.6.12-rc2 |
44 |
#define CRYPTO_ALG_TYPE_CIPHER 0x00000001 |
004a403c2 [CRYPTO] hash: Ad... |
45 46 |
#define CRYPTO_ALG_TYPE_COMPRESS 0x00000002 #define CRYPTO_ALG_TYPE_AEAD 0x00000003 |
055bcee31 [CRYPTO] digest: ... |
47 |
#define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004 |
332f8840f [CRYPTO] ablkciph... |
48 |
#define CRYPTO_ALG_TYPE_ABLKCIPHER 0x00000005 |
4e6c3df4d crypto: skcipher ... |
49 |
#define CRYPTO_ALG_TYPE_SKCIPHER 0x00000005 |
61da88e2b [CRYPTO] skcipher... |
50 |
#define CRYPTO_ALG_TYPE_GIVCIPHER 0x00000006 |
4e5f2c400 crypto: kpp - Key... |
51 |
#define CRYPTO_ALG_TYPE_KPP 0x00000008 |
2ebda74fd crypto: acomp - a... |
52 |
#define CRYPTO_ALG_TYPE_ACOMPRESS 0x0000000a |
1ab53a77b crypto: acomp - a... |
53 |
#define CRYPTO_ALG_TYPE_SCOMPRESS 0x0000000b |
17f0f4a47 crypto: rng - RNG... |
54 |
#define CRYPTO_ALG_TYPE_RNG 0x0000000c |
3c339ab83 crypto: akcipher ... |
55 |
#define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d |
63044c4fd crypto: hash - sh... |
56 57 58 59 |
#define CRYPTO_ALG_TYPE_DIGEST 0x0000000e #define CRYPTO_ALG_TYPE_HASH 0x0000000e #define CRYPTO_ALG_TYPE_SHASH 0x0000000e #define CRYPTO_ALG_TYPE_AHASH 0x0000000f |
055bcee31 [CRYPTO] digest: ... |
60 61 |
#define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e |
63044c4fd crypto: hash - sh... |
62 |
#define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000e |
332f8840f [CRYPTO] ablkciph... |
63 |
#define CRYPTO_ALG_TYPE_BLKCIPHER_MASK 0x0000000c |
1ab53a77b crypto: acomp - a... |
64 |
#define CRYPTO_ALG_TYPE_ACOMPRESS_MASK 0x0000000e |
1da177e4c Linux-2.6.12-rc2 |
65 |
|
2825982d9 [CRYPTO] api: Add... |
66 |
#define CRYPTO_ALG_LARVAL 0x00000010 |
6bfd48096 [CRYPTO] api: Add... |
67 68 |
#define CRYPTO_ALG_DEAD 0x00000020 #define CRYPTO_ALG_DYING 0x00000040 |
f3f632d61 [CRYPTO] api: Add... |
69 |
#define CRYPTO_ALG_ASYNC 0x00000080 |
2825982d9 [CRYPTO] api: Add... |
70 |
|
1da177e4c Linux-2.6.12-rc2 |
71 |
/* |
6010439f4 [CRYPTO] padlock:... |
72 73 74 75 76 77 |
* Set this bit if and only if the algorithm requires another algorithm of * the same type to handle corner cases. */ #define CRYPTO_ALG_NEED_FALLBACK 0x00000100 /* |
ecfc43292 [CRYPTO] skcipher... |
78 79 80 81 82 83 |
* This bit is set for symmetric key ciphers that have already been wrapped * with a generic IV generator to prevent them from being wrapped again. */ #define CRYPTO_ALG_GENIV 0x00000200 /* |
73d3864a4 crypto: api - Use... |
84 85 86 87 88 89 90 91 |
* Set if the algorithm has passed automated run-time testing. Note that * if there is no run-time testing for a given algorithm it is considered * to have passed. */ #define CRYPTO_ALG_TESTED 0x00000400 /* |
864e0981f crypto: api - fix... |
92 |
* Set if the algorithm is an instance that is built from templates. |
64a947b13 crypto: Add a fla... |
93 94 |
*/ #define CRYPTO_ALG_INSTANCE 0x00000800 |
d912bb767 crypto: Add CRYPT... |
95 96 97 98 |
/* Set this bit if the algorithm provided is hardware accelerated but * not available to userspace via instruction set or so. */ #define CRYPTO_ALG_KERN_DRIVER_ONLY 0x00001000 |
64a947b13 crypto: Add a fla... |
99 |
/* |
06ca7f68d crypto: api - pre... |
100 101 102 103 104 105 |
* Mark a cipher as a service implementation only usable by another * cipher and never by a normal user of the kernel crypto API */ #define CRYPTO_ALG_INTERNAL 0x00002000 /* |
8d906d183 crypto: hash - an... |
106 107 108 109 110 111 |
* Set if the algorithm has a ->setkey() method but can be used without * calling it first, i.e. there is a default key. */ #define CRYPTO_ALG_OPTIONAL_KEY 0x00004000 /* |
c818695c7 evm: Don't deadlo... |
112 113 114 115 116 |
* Don't trigger module loading */ #define CRYPTO_NOLOAD 0x00008000 /* |
1da177e4c Linux-2.6.12-rc2 |
117 118 |
* Transform masks and values (for crt_flags). */ |
2f00eb279 crypto: hash - pr... |
119 |
#define CRYPTO_TFM_NEED_KEY 0x00000001 |
1da177e4c Linux-2.6.12-rc2 |
120 121 |
#define CRYPTO_TFM_REQ_MASK 0x000fff00 #define CRYPTO_TFM_RES_MASK 0xfff00000 |
1da177e4c Linux-2.6.12-rc2 |
122 |
#define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100 |
64baf3cfe [CRYPTO]: Added C... |
123 |
#define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200 |
32e3983fe [CRYPTO] api: Add... |
124 |
#define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400 |
1da177e4c Linux-2.6.12-rc2 |
125 126 127 128 129 130 131 132 133 |
#define CRYPTO_TFM_RES_WEAK_KEY 0x00100000 #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000 #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000 #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000 /* * Miscellaneous stuff. */ |
f437a3f47 crypto: api - Ext... |
134 |
#define CRYPTO_MAX_ALG_NAME 128 |
1da177e4c Linux-2.6.12-rc2 |
135 |
|
799111020 [CRYPTO] api: Fix... |
136 137 138 139 140 141 142 143 |
/* * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual * declaration) is used to ensure that the crypto_tfm context structure is * aligned correctly for the given architecture so that there are no alignment * faults for C data types. In particular, this is required on platforms such * as arm where pointers are 32-bit aligned but there are data types such as * u64 which require 64-bit alignment. */ |
799111020 [CRYPTO] api: Fix... |
144 |
#define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN |
799111020 [CRYPTO] api: Fix... |
145 |
|
799111020 [CRYPTO] api: Fix... |
146 |
#define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN))) |
799111020 [CRYPTO] api: Fix... |
147 |
|
1da177e4c Linux-2.6.12-rc2 |
148 |
struct scatterlist; |
32e3983fe [CRYPTO] api: Add... |
149 150 |
struct crypto_ablkcipher; struct crypto_async_request; |
5cde0af2a [CRYPTO] cipher: ... |
151 |
struct crypto_blkcipher; |
40725181b [CRYPTO] Add supp... |
152 |
struct crypto_tfm; |
e853c3cfa [CRYPTO] api: Add... |
153 |
struct crypto_type; |
61da88e2b [CRYPTO] skcipher... |
154 |
struct skcipher_givcrypt_request; |
40725181b [CRYPTO] Add supp... |
155 |
|
32e3983fe [CRYPTO] api: Add... |
156 |
typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err); |
0d7f488f0 crypto: doc - cip... |
157 158 159 160 161 162 |
/** * DOC: Block Cipher Context Data Structures * * These data structures define the operating context for each block cipher * type. */ |
32e3983fe [CRYPTO] api: Add... |
163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 |
struct crypto_async_request { struct list_head list; crypto_completion_t complete; void *data; struct crypto_tfm *tfm; u32 flags; }; struct ablkcipher_request { struct crypto_async_request base; unsigned int nbytes; void *info; struct scatterlist *src; struct scatterlist *dst; void *__ctx[] CRYPTO_MINALIGN_ATTR; }; |
5cde0af2a [CRYPTO] cipher: ... |
184 185 186 187 188 |
struct blkcipher_desc { struct crypto_blkcipher *tfm; void *info; u32 flags; }; |
40725181b [CRYPTO] Add supp... |
189 190 |
struct cipher_desc { struct crypto_tfm *tfm; |
6c2bb98bc [CRYPTO] all: Pas... |
191 |
void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); |
40725181b [CRYPTO] Add supp... |
192 193 194 195 |
unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst, const u8 *src, unsigned int nbytes); void *info; }; |
1da177e4c Linux-2.6.12-rc2 |
196 |
|
0d7f488f0 crypto: doc - cip... |
197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 |
/** * DOC: Block Cipher Algorithm Definitions * * These data structures define modular crypto algorithm implementations, * managed via crypto_register_alg() and crypto_unregister_alg(). */ /** * struct ablkcipher_alg - asynchronous block cipher definition * @min_keysize: Minimum key size supported by the transformation. This is the * smallest key length supported by this transformation algorithm. * This must be set to one of the pre-defined values as this is * not hardware specific. Possible values for this field can be * found via git grep "_MIN_KEY_SIZE" include/crypto/ * @max_keysize: Maximum key size supported by the transformation. This is the * largest key length supported by this transformation algorithm. * This must be set to one of the pre-defined values as this is * not hardware specific. Possible values for this field can be * found via git grep "_MAX_KEY_SIZE" include/crypto/ * @setkey: Set key for the transformation. This function is used to either * program a supplied key into the hardware or store the key in the * transformation context for programming it later. Note that this * function does modify the transformation context. This function can * be called multiple times during the existence of the transformation * object, so one must make sure the key is properly reprogrammed into * the hardware. This function is also responsible for checking the key * length for validity. In case a software fallback was put in place in * the @cra_init call, this function might need to use the fallback if * the algorithm doesn't support all of the key sizes. * @encrypt: Encrypt a scatterlist of blocks. This function is used to encrypt * the supplied scatterlist containing the blocks of data. The crypto * API consumer is responsible for aligning the entries of the * scatterlist properly and making sure the chunks are correctly * sized. In case a software fallback was put in place in the * @cra_init call, this function might need to use the fallback if * the algorithm doesn't support all of the key sizes. In case the * key was stored in transformation context, the key might need to be * re-programmed into the hardware in this function. This function * shall not modify the transformation context, as this function may * be called in parallel with the same transformation object. * @decrypt: Decrypt a single block. This is a reverse counterpart to @encrypt * and the conditions are exactly the same. * @givencrypt: Update the IV for encryption. With this function, a cipher * implementation may provide the function on how to update the IV * for encryption. * @givdecrypt: Update the IV for decryption. This is the reverse of * @givencrypt . * @geniv: The transformation implementation may use an "IV generator" provided * by the kernel crypto API. Several use cases have a predefined * approach how IVs are to be updated. For such use cases, the kernel * crypto API provides ready-to-use implementations that can be * referenced with this variable. * @ivsize: IV size applicable for transformation. The consumer must provide an * IV of exactly that size to perform the encrypt or decrypt operation. * * All fields except @givencrypt , @givdecrypt , @geniv and @ivsize are * mandatory and must be filled. |
1da177e4c Linux-2.6.12-rc2 |
254 |
*/ |
b5b7f0886 [CRYPTO] api: Add... |
255 256 257 258 259 |
struct ablkcipher_alg { int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int keylen); int (*encrypt)(struct ablkcipher_request *req); int (*decrypt)(struct ablkcipher_request *req); |
61da88e2b [CRYPTO] skcipher... |
260 261 |
int (*givencrypt)(struct skcipher_givcrypt_request *req); int (*givdecrypt)(struct skcipher_givcrypt_request *req); |
b5b7f0886 [CRYPTO] api: Add... |
262 |
|
23508e11a [CRYPTO] skcipher... |
263 |
const char *geniv; |
b5b7f0886 [CRYPTO] api: Add... |
264 265 266 267 |
unsigned int min_keysize; unsigned int max_keysize; unsigned int ivsize; }; |
0d7f488f0 crypto: doc - cip... |
268 |
/** |
0d7f488f0 crypto: doc - cip... |
269 270 271 272 273 274 275 276 277 278 279 |
* struct blkcipher_alg - synchronous block cipher definition * @min_keysize: see struct ablkcipher_alg * @max_keysize: see struct ablkcipher_alg * @setkey: see struct ablkcipher_alg * @encrypt: see struct ablkcipher_alg * @decrypt: see struct ablkcipher_alg * @geniv: see struct ablkcipher_alg * @ivsize: see struct ablkcipher_alg * * All fields except @geniv and @ivsize are mandatory and must be filled. */ |
5cde0af2a [CRYPTO] cipher: ... |
280 281 282 283 284 285 286 287 288 |
struct blkcipher_alg { int (*setkey)(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes); int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes); |
23508e11a [CRYPTO] skcipher... |
289 |
const char *geniv; |
5cde0af2a [CRYPTO] cipher: ... |
290 291 292 293 |
unsigned int min_keysize; unsigned int max_keysize; unsigned int ivsize; }; |
0d7f488f0 crypto: doc - cip... |
294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 |
/** * struct cipher_alg - single-block symmetric ciphers definition * @cia_min_keysize: Minimum key size supported by the transformation. This is * the smallest key length supported by this transformation * algorithm. This must be set to one of the pre-defined * values as this is not hardware specific. Possible values * for this field can be found via git grep "_MIN_KEY_SIZE" * include/crypto/ * @cia_max_keysize: Maximum key size supported by the transformation. This is * the largest key length supported by this transformation * algorithm. This must be set to one of the pre-defined values * as this is not hardware specific. Possible values for this * field can be found via git grep "_MAX_KEY_SIZE" * include/crypto/ * @cia_setkey: Set key for the transformation. This function is used to either * program a supplied key into the hardware or store the key in the * transformation context for programming it later. Note that this * function does modify the transformation context. This function * can be called multiple times during the existence of the * transformation object, so one must make sure the key is properly * reprogrammed into the hardware. This function is also * responsible for checking the key length for validity. * @cia_encrypt: Encrypt a single block. This function is used to encrypt a * single block of data, which must be @cra_blocksize big. This * always operates on a full @cra_blocksize and it is not possible * to encrypt a block of smaller size. The supplied buffers must * therefore also be at least of @cra_blocksize size. Both the * input and output buffers are always aligned to @cra_alignmask. * In case either of the input or output buffer supplied by user * of the crypto API is not aligned to @cra_alignmask, the crypto * API will re-align the buffers. The re-alignment means that a * new buffer will be allocated, the data will be copied into the * new buffer, then the processing will happen on the new buffer, * then the data will be copied back into the original buffer and * finally the new buffer will be freed. In case a software * fallback was put in place in the @cra_init call, this function * might need to use the fallback if the algorithm doesn't support * all of the key sizes. In case the key was stored in * transformation context, the key might need to be re-programmed * into the hardware in this function. This function shall not * modify the transformation context, as this function may be * called in parallel with the same transformation object. * @cia_decrypt: Decrypt a single block. This is a reverse counterpart to * @cia_encrypt, and the conditions are exactly the same. * * All fields are mandatory and must be filled. */ |
1da177e4c Linux-2.6.12-rc2 |
341 342 343 |
struct cipher_alg { unsigned int cia_min_keysize; unsigned int cia_max_keysize; |
6c2bb98bc [CRYPTO] all: Pas... |
344 |
int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key, |
560c06ae1 [CRYPTO] api: Get... |
345 |
unsigned int keylen); |
6c2bb98bc [CRYPTO] all: Pas... |
346 347 |
void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); |
1da177e4c Linux-2.6.12-rc2 |
348 |
}; |
1da177e4c Linux-2.6.12-rc2 |
349 |
struct compress_alg { |
6c2bb98bc [CRYPTO] all: Pas... |
350 351 352 353 |
int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen); int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen); |
1da177e4c Linux-2.6.12-rc2 |
354 |
}; |
17f0f4a47 crypto: rng - RNG... |
355 |
|
b5b7f0886 [CRYPTO] api: Add... |
356 |
#define cra_ablkcipher cra_u.ablkcipher |
5cde0af2a [CRYPTO] cipher: ... |
357 |
#define cra_blkcipher cra_u.blkcipher |
1da177e4c Linux-2.6.12-rc2 |
358 |
#define cra_cipher cra_u.cipher |
1da177e4c Linux-2.6.12-rc2 |
359 |
#define cra_compress cra_u.compress |
0d7f488f0 crypto: doc - cip... |
360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 |
/** * struct crypto_alg - definition of a cryptograpic cipher algorithm * @cra_flags: Flags describing this transformation. See include/linux/crypto.h * CRYPTO_ALG_* flags for the flags which go in here. Those are * used for fine-tuning the description of the transformation * algorithm. * @cra_blocksize: Minimum block size of this transformation. The size in bytes * of the smallest possible unit which can be transformed with * this algorithm. The users must respect this value. * In case of HASH transformation, it is possible for a smaller * block than @cra_blocksize to be passed to the crypto API for * transformation, in case of any other transformation type, an * error will be returned upon any attempt to transform smaller * than @cra_blocksize chunks. * @cra_ctxsize: Size of the operational context of the transformation. This * value informs the kernel crypto API about the memory size * needed to be allocated for the transformation context. * @cra_alignmask: Alignment mask for the input and output data buffer. The data * buffer containing the input data for the algorithm must be * aligned to this alignment mask. The data buffer for the * output data must be aligned to this alignment mask. Note that * the Crypto API will do the re-alignment in software, but * only under special conditions and there is a performance hit. * The re-alignment happens at these occasions for different * @cra_u types: cipher -- For both input data and output data * buffer; ahash -- For output hash destination buf; shash -- * For output hash destination buf. * This is needed on hardware which is flawed by design and * cannot pick data from arbitrary addresses. * @cra_priority: Priority of this transformation implementation. In case * multiple transformations with same @cra_name are available to * the Crypto API, the kernel will use the one with highest * @cra_priority. * @cra_name: Generic name (usable by multiple implementations) of the * transformation algorithm. This is the name of the transformation * itself. This field is used by the kernel when looking up the * providers of particular transformation. * @cra_driver_name: Unique name of the transformation provider. This is the * name of the provider of the transformation. This can be any * arbitrary value, but in the usual case, this contains the * name of the chip or provider and the name of the * transformation algorithm. * @cra_type: Type of the cryptographic transformation. This is a pointer to * struct crypto_type, which implements callbacks common for all |
12f7c14aa crypto: doc - Fix... |
404 |
* transformation types. There are multiple options: |
0d7f488f0 crypto: doc - cip... |
405 |
* &crypto_blkcipher_type, &crypto_ablkcipher_type, |
b0d955ba4 crypto: aead - Re... |
406 |
* &crypto_ahash_type, &crypto_rng_type. |
0d7f488f0 crypto: doc - cip... |
407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 |
* This field might be empty. In that case, there are no common * callbacks. This is the case for: cipher, compress, shash. * @cra_u: Callbacks implementing the transformation. This is a union of * multiple structures. Depending on the type of transformation selected * by @cra_type and @cra_flags above, the associated structure must be * filled with callbacks. This field might be empty. This is the case * for ahash, shash. * @cra_init: Initialize the cryptographic transformation object. This function * is used to initialize the cryptographic transformation object. * This function is called only once at the instantiation time, right * after the transformation context was allocated. In case the * cryptographic hardware has some special requirements which need to * be handled by software, this function shall check for the precise * requirement of the transformation and put any software fallbacks * in place. * @cra_exit: Deinitialize the cryptographic transformation object. This is a * counterpart to @cra_init, used to remove various changes set in * @cra_init. * @cra_module: Owner of this transformation implementation. Set to THIS_MODULE * @cra_list: internally used * @cra_users: internally used * @cra_refcnt: internally used * @cra_destroy: internally used * * The struct crypto_alg describes a generic Crypto API algorithm and is common * for all of the transformations. Any variable not documented here shall not * be used by a cipher implementation as it is internal to the Crypto API. */ |
1da177e4c Linux-2.6.12-rc2 |
435 436 |
struct crypto_alg { struct list_head cra_list; |
6bfd48096 [CRYPTO] api: Add... |
437 |
struct list_head cra_users; |
1da177e4c Linux-2.6.12-rc2 |
438 439 440 |
u32 cra_flags; unsigned int cra_blocksize; unsigned int cra_ctxsize; |
954773779 [CRYPTO] Add alig... |
441 |
unsigned int cra_alignmask; |
5cb1454b8 [CRYPTO] Allow mu... |
442 443 |
int cra_priority; |
6521f3027 [CRYPTO] api: Add... |
444 |
atomic_t cra_refcnt; |
5cb1454b8 [CRYPTO] Allow mu... |
445 |
|
d913ea0d6 [CRYPTO] api: Rem... |
446 447 |
char cra_name[CRYPTO_MAX_ALG_NAME]; char cra_driver_name[CRYPTO_MAX_ALG_NAME]; |
1da177e4c Linux-2.6.12-rc2 |
448 |
|
e853c3cfa [CRYPTO] api: Add... |
449 |
const struct crypto_type *cra_type; |
1da177e4c Linux-2.6.12-rc2 |
450 |
union { |
b5b7f0886 [CRYPTO] api: Add... |
451 |
struct ablkcipher_alg ablkcipher; |
5cde0af2a [CRYPTO] cipher: ... |
452 |
struct blkcipher_alg blkcipher; |
1da177e4c Linux-2.6.12-rc2 |
453 |
struct cipher_alg cipher; |
1da177e4c Linux-2.6.12-rc2 |
454 455 |
struct compress_alg compress; } cra_u; |
c7fc05992 [CRYPTO] api: Add... |
456 457 458 |
int (*cra_init)(struct crypto_tfm *tfm); void (*cra_exit)(struct crypto_tfm *tfm); |
6521f3027 [CRYPTO] api: Add... |
459 |
void (*cra_destroy)(struct crypto_alg *alg); |
1da177e4c Linux-2.6.12-rc2 |
460 461 |
struct module *cra_module; |
edf18b910 crypto: api - Add... |
462 |
} CRYPTO_MINALIGN_ATTR; |
1da177e4c Linux-2.6.12-rc2 |
463 464 465 466 467 468 |
/* * Algorithm registration interface. */ int crypto_register_alg(struct crypto_alg *alg); int crypto_unregister_alg(struct crypto_alg *alg); |
4b004346f crypto: Add bulk ... |
469 470 |
int crypto_register_algs(struct crypto_alg *algs, int count); int crypto_unregister_algs(struct crypto_alg *algs, int count); |
1da177e4c Linux-2.6.12-rc2 |
471 472 473 474 |
/* * Algorithm query interface. */ |
fce32d70b [CRYPTO] api: Add... |
475 |
int crypto_has_alg(const char *name, u32 type, u32 mask); |
1da177e4c Linux-2.6.12-rc2 |
476 477 478 |
/* * Transforms: user-instantiated objects which encapsulate algorithms |
6d7d684d6 [CRYPTO] api: Add... |
479 480 |
* and core processing logic. Managed via crypto_alloc_*() and * crypto_free_*(), as well as the various helpers below. |
1da177e4c Linux-2.6.12-rc2 |
481 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
482 |
|
32e3983fe [CRYPTO] api: Add... |
483 484 485 486 487 |
struct ablkcipher_tfm { int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int keylen); int (*encrypt)(struct ablkcipher_request *req); int (*decrypt)(struct ablkcipher_request *req); |
61da88e2b [CRYPTO] skcipher... |
488 |
|
ecfc43292 [CRYPTO] skcipher... |
489 |
struct crypto_ablkcipher *base; |
32e3983fe [CRYPTO] api: Add... |
490 491 492 |
unsigned int ivsize; unsigned int reqsize; }; |
5cde0af2a [CRYPTO] cipher: ... |
493 494 495 496 497 498 499 500 501 |
struct blkcipher_tfm { void *iv; int (*setkey)(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes); int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes); }; |
1da177e4c Linux-2.6.12-rc2 |
502 |
struct cipher_tfm { |
1da177e4c Linux-2.6.12-rc2 |
503 504 |
int (*cit_setkey)(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen); |
f28776a36 [CRYPTO] cipher: ... |
505 506 |
void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src); |
1da177e4c Linux-2.6.12-rc2 |
507 |
}; |
1da177e4c Linux-2.6.12-rc2 |
508 509 510 511 512 513 514 515 |
struct compress_tfm { int (*cot_compress)(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen); int (*cot_decompress)(struct crypto_tfm *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen); }; |
32e3983fe [CRYPTO] api: Add... |
516 |
#define crt_ablkcipher crt_u.ablkcipher |
5cde0af2a [CRYPTO] cipher: ... |
517 |
#define crt_blkcipher crt_u.blkcipher |
1da177e4c Linux-2.6.12-rc2 |
518 |
#define crt_cipher crt_u.cipher |
1da177e4c Linux-2.6.12-rc2 |
519 520 521 522 523 524 525 |
#define crt_compress crt_u.compress struct crypto_tfm { u32 crt_flags; union { |
32e3983fe [CRYPTO] api: Add... |
526 |
struct ablkcipher_tfm ablkcipher; |
5cde0af2a [CRYPTO] cipher: ... |
527 |
struct blkcipher_tfm blkcipher; |
1da177e4c Linux-2.6.12-rc2 |
528 |
struct cipher_tfm cipher; |
1da177e4c Linux-2.6.12-rc2 |
529 530 |
struct compress_tfm compress; } crt_u; |
4a7794860 crypto: api - Mov... |
531 532 |
void (*exit)(struct crypto_tfm *tfm); |
1da177e4c Linux-2.6.12-rc2 |
533 534 |
struct crypto_alg *__crt_alg; |
f10b7897e [CRYPTO] api: Ali... |
535 |
|
799111020 [CRYPTO] api: Fix... |
536 |
void *__crt_ctx[] CRYPTO_MINALIGN_ATTR; |
1da177e4c Linux-2.6.12-rc2 |
537 |
}; |
32e3983fe [CRYPTO] api: Add... |
538 539 540 |
struct crypto_ablkcipher { struct crypto_tfm base; }; |
5cde0af2a [CRYPTO] cipher: ... |
541 542 543 |
struct crypto_blkcipher { struct crypto_tfm base; }; |
78a1fe4f2 [CRYPTO] api: Use... |
544 545 546 547 548 549 550 |
struct crypto_cipher { struct crypto_tfm base; }; struct crypto_comp { struct crypto_tfm base; }; |
2b8c19dbd [CRYPTO] api: Add... |
551 552 553 |
enum { CRYPTOA_UNSPEC, CRYPTOA_ALG, |
ebc610e5b [CRYPTO] template... |
554 |
CRYPTOA_TYPE, |
39e1ee011 [CRYPTO] api: Add... |
555 |
CRYPTOA_U32, |
ebc610e5b [CRYPTO] template... |
556 |
__CRYPTOA_MAX, |
2b8c19dbd [CRYPTO] api: Add... |
557 |
}; |
ebc610e5b [CRYPTO] template... |
558 |
#define CRYPTOA_MAX (__CRYPTOA_MAX - 1) |
39e1ee011 [CRYPTO] api: Add... |
559 560 |
/* Maximum number of (rtattr) parameters for each template. */ #define CRYPTO_MAX_ATTRS 32 |
2b8c19dbd [CRYPTO] api: Add... |
561 562 563 |
struct crypto_attr_alg { char name[CRYPTO_MAX_ALG_NAME]; }; |
ebc610e5b [CRYPTO] template... |
564 565 566 567 |
struct crypto_attr_type { u32 type; u32 mask; }; |
39e1ee011 [CRYPTO] api: Add... |
568 569 570 |
struct crypto_attr_u32 { u32 num; }; |
1da177e4c Linux-2.6.12-rc2 |
571 572 573 574 |
/* * Transform user interface. */ |
6d7d684d6 [CRYPTO] api: Add... |
575 |
struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask); |
7b2cd92ad crypto: api - Fix... |
576 577 578 579 580 581 |
void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm); static inline void crypto_free_tfm(struct crypto_tfm *tfm) { return crypto_destroy_tfm(tfm, tfm); } |
1da177e4c Linux-2.6.12-rc2 |
582 |
|
da7f033dd crypto: cryptomgr... |
583 |
int alg_test(const char *driver, const char *alg, u32 type, u32 mask); |
1da177e4c Linux-2.6.12-rc2 |
584 585 586 587 588 589 590 |
/* * Transform helpers which query the underlying algorithm. */ static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm) { return tfm->__crt_alg->cra_name; } |
b14cdd670 [CRYPTO] api: Add... |
591 592 593 594 595 596 597 598 599 |
static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm) { return tfm->__crt_alg->cra_driver_name; } static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm) { return tfm->__crt_alg->cra_priority; } |
1da177e4c Linux-2.6.12-rc2 |
600 601 602 603 |
static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm) { return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK; } |
1da177e4c Linux-2.6.12-rc2 |
604 605 606 607 |
static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm) { return tfm->__crt_alg->cra_blocksize; } |
fbdae9f3e [CRYPTO] Ensure c... |
608 609 610 611 |
static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm) { return tfm->__crt_alg->cra_alignmask; } |
f28776a36 [CRYPTO] cipher: ... |
612 613 614 615 616 617 618 619 620 621 622 623 624 625 |
static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm) { return tfm->crt_flags; } static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags) { tfm->crt_flags |= flags; } static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags) { tfm->crt_flags &= ~flags; } |
40725181b [CRYPTO] Add supp... |
626 627 |
static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm) { |
f10b7897e [CRYPTO] api: Ali... |
628 629 630 631 632 633 634 |
return tfm->__crt_ctx; } static inline unsigned int crypto_tfm_ctx_alignment(void) { struct crypto_tfm *tfm; return __alignof__(tfm->__crt_ctx); |
40725181b [CRYPTO] Add supp... |
635 |
} |
1da177e4c Linux-2.6.12-rc2 |
636 637 638 |
/* * API wrappers. */ |
32e3983fe [CRYPTO] api: Add... |
639 640 641 642 643 |
static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast( struct crypto_tfm *tfm) { return (struct crypto_ablkcipher *)tfm; } |
378f4f51f [CRYPTO] skcipher... |
644 |
static inline u32 crypto_skcipher_type(u32 type) |
32e3983fe [CRYPTO] api: Add... |
645 |
{ |
ecfc43292 [CRYPTO] skcipher... |
646 |
type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); |
32e3983fe [CRYPTO] api: Add... |
647 |
type |= CRYPTO_ALG_TYPE_BLKCIPHER; |
378f4f51f [CRYPTO] skcipher... |
648 649 650 651 652 |
return type; } static inline u32 crypto_skcipher_mask(u32 mask) { |
ecfc43292 [CRYPTO] skcipher... |
653 |
mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); |
332f8840f [CRYPTO] ablkciph... |
654 |
mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK; |
378f4f51f [CRYPTO] skcipher... |
655 656 |
return mask; } |
32e3983fe [CRYPTO] api: Add... |
657 |
|
f13ec330a crypto: doc - ABL... |
658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 |
/** * DOC: Asynchronous Block Cipher API * * Asynchronous block cipher API is used with the ciphers of type * CRYPTO_ALG_TYPE_ABLKCIPHER (listed as type "ablkcipher" in /proc/crypto). * * Asynchronous cipher operations imply that the function invocation for a * cipher request returns immediately before the completion of the operation. * The cipher request is scheduled as a separate kernel thread and therefore * load-balanced on the different CPUs via the process scheduler. To allow * the kernel crypto API to inform the caller about the completion of a cipher * request, the caller must provide a callback function. That function is * invoked with the cipher handle when the request completes. * * To support the asynchronous operation, additional information than just the * cipher handle must be supplied to the kernel crypto API. That additional * information is given by filling in the ablkcipher_request data structure. * * For the asynchronous block cipher API, the state is maintained with the tfm * cipher handle. A single tfm can be used across multiple calls and in * parallel. For asynchronous block cipher calls, context data supplied and * only used by the caller can be referenced the request data structure in * addition to the IV used for the cipher request. The maintenance of such * state information would be important for a crypto driver implementer to * have, because when calling the callback function upon completion of the * cipher operation, that callback function may need some information about * which operation just finished if it invoked multiple in parallel. This * state information is unused by the kernel crypto API. */ |
32e3983fe [CRYPTO] api: Add... |
687 688 689 690 691 |
static inline struct crypto_tfm *crypto_ablkcipher_tfm( struct crypto_ablkcipher *tfm) { return &tfm->base; } |
f13ec330a crypto: doc - ABL... |
692 693 694 695 |
/** * crypto_free_ablkcipher() - zeroize and free cipher handle * @tfm: cipher handle to be freed */ |
32e3983fe [CRYPTO] api: Add... |
696 697 698 699 |
static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm) { crypto_free_tfm(crypto_ablkcipher_tfm(tfm)); } |
f13ec330a crypto: doc - ABL... |
700 701 702 703 704 705 706 707 708 709 |
/** * crypto_has_ablkcipher() - Search for the availability of an ablkcipher. * @alg_name: is the cra_name / name or cra_driver_name / driver name of the * ablkcipher * @type: specifies the type of the cipher * @mask: specifies the mask for the cipher * * Return: true when the ablkcipher is known to the kernel crypto API; false * otherwise */ |
32e3983fe [CRYPTO] api: Add... |
710 711 712 |
static inline int crypto_has_ablkcipher(const char *alg_name, u32 type, u32 mask) { |
378f4f51f [CRYPTO] skcipher... |
713 714 |
return crypto_has_alg(alg_name, crypto_skcipher_type(type), crypto_skcipher_mask(mask)); |
32e3983fe [CRYPTO] api: Add... |
715 716 717 718 719 720 721 |
} static inline struct ablkcipher_tfm *crypto_ablkcipher_crt( struct crypto_ablkcipher *tfm) { return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher; } |
f13ec330a crypto: doc - ABL... |
722 723 724 725 726 727 728 729 730 |
/** * crypto_ablkcipher_ivsize() - obtain IV size * @tfm: cipher handle * * The size of the IV for the ablkcipher referenced by the cipher handle is * returned. This IV size may be zero if the cipher does not need an IV. * * Return: IV size in bytes */ |
32e3983fe [CRYPTO] api: Add... |
731 732 733 734 735 |
static inline unsigned int crypto_ablkcipher_ivsize( struct crypto_ablkcipher *tfm) { return crypto_ablkcipher_crt(tfm)->ivsize; } |
f13ec330a crypto: doc - ABL... |
736 737 738 739 740 741 742 743 744 745 |
/** * crypto_ablkcipher_blocksize() - obtain block size of cipher * @tfm: cipher handle * * The block size for the ablkcipher referenced with the cipher handle is * returned. The caller may use that information to allocate appropriate * memory for the data returned by the encryption or decryption operation * * Return: block size of cipher */ |
32e3983fe [CRYPTO] api: Add... |
746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 |
static inline unsigned int crypto_ablkcipher_blocksize( struct crypto_ablkcipher *tfm) { return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm)); } static inline unsigned int crypto_ablkcipher_alignmask( struct crypto_ablkcipher *tfm) { return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm)); } static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm) { return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm)); } static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm, u32 flags) { crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags); } static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm, u32 flags) { crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags); } |
f13ec330a crypto: doc - ABL... |
774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 |
/** * crypto_ablkcipher_setkey() - set key for cipher * @tfm: cipher handle * @key: buffer holding the key * @keylen: length of the key in bytes * * The caller provided key is set for the ablkcipher referenced by the cipher * handle. * * Note, the key length determines the cipher type. Many block ciphers implement * different cipher modes depending on the key size, such as AES-128 vs AES-192 * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128 * is performed. * * Return: 0 if the setting of the key was successful; < 0 if an error occurred */ |
32e3983fe [CRYPTO] api: Add... |
790 791 792 |
static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm, const u8 *key, unsigned int keylen) { |
ecfc43292 [CRYPTO] skcipher... |
793 794 795 |
struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm); return crt->setkey(crt->base, key, keylen); |
32e3983fe [CRYPTO] api: Add... |
796 |
} |
f13ec330a crypto: doc - ABL... |
797 798 799 800 801 802 803 804 805 |
/** * crypto_ablkcipher_reqtfm() - obtain cipher handle from request * @req: ablkcipher_request out of which the cipher handle is to be obtained * * Return the crypto_ablkcipher handle when furnishing an ablkcipher_request * data structure. * * Return: crypto_ablkcipher handle */ |
32e3983fe [CRYPTO] api: Add... |
806 807 808 809 810 |
static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm( struct ablkcipher_request *req) { return __crypto_ablkcipher_cast(req->base.tfm); } |
f13ec330a crypto: doc - ABL... |
811 812 813 814 815 816 817 818 819 820 821 |
/** * crypto_ablkcipher_encrypt() - encrypt plaintext * @req: reference to the ablkcipher_request handle that holds all information * needed to perform the cipher operation * * Encrypt plaintext data using the ablkcipher_request handle. That data * structure and how it is filled with data is discussed with the * ablkcipher_request_* functions. * * Return: 0 if the cipher operation was successful; < 0 if an error occurred */ |
32e3983fe [CRYPTO] api: Add... |
822 823 824 825 826 827 |
static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req) { struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req)); return crt->encrypt(req); } |
f13ec330a crypto: doc - ABL... |
828 829 830 831 832 833 834 835 836 837 838 |
/** * crypto_ablkcipher_decrypt() - decrypt ciphertext * @req: reference to the ablkcipher_request handle that holds all information * needed to perform the cipher operation * * Decrypt ciphertext data using the ablkcipher_request handle. That data * structure and how it is filled with data is discussed with the * ablkcipher_request_* functions. * * Return: 0 if the cipher operation was successful; < 0 if an error occurred */ |
32e3983fe [CRYPTO] api: Add... |
839 840 841 842 843 844 |
static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req) { struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req)); return crt->decrypt(req); } |
f13ec330a crypto: doc - ABL... |
845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 |
/** * DOC: Asynchronous Cipher Request Handle * * The ablkcipher_request data structure contains all pointers to data * required for the asynchronous cipher operation. This includes the cipher * handle (which can be used by multiple ablkcipher_request instances), pointer * to plaintext and ciphertext, asynchronous callback function, etc. It acts * as a handle to the ablkcipher_request_* API calls in a similar way as * ablkcipher handle to the crypto_ablkcipher_* API calls. */ /** * crypto_ablkcipher_reqsize() - obtain size of the request data structure * @tfm: cipher handle * * Return: number of bytes */ |
b16c3a2e2 [CRYPTO] api: Fix... |
862 863 |
static inline unsigned int crypto_ablkcipher_reqsize( struct crypto_ablkcipher *tfm) |
32e3983fe [CRYPTO] api: Add... |
864 865 866 |
{ return crypto_ablkcipher_crt(tfm)->reqsize; } |
f13ec330a crypto: doc - ABL... |
867 868 869 870 871 872 873 874 |
/** * ablkcipher_request_set_tfm() - update cipher handle reference in request * @req: request handle to be modified * @tfm: cipher handle that shall be added to the request handle * * Allow the caller to replace the existing ablkcipher handle in the request * data structure with a different one. */ |
e196d6259 [CRYPTO] api: Add... |
875 876 877 |
static inline void ablkcipher_request_set_tfm( struct ablkcipher_request *req, struct crypto_ablkcipher *tfm) { |
ecfc43292 [CRYPTO] skcipher... |
878 |
req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base); |
e196d6259 [CRYPTO] api: Add... |
879 |
} |
b5b7f0886 [CRYPTO] api: Add... |
880 881 882 883 884 |
static inline struct ablkcipher_request *ablkcipher_request_cast( struct crypto_async_request *req) { return container_of(req, struct ablkcipher_request, base); } |
f13ec330a crypto: doc - ABL... |
885 886 887 888 889 890 891 892 893 |
/** * ablkcipher_request_alloc() - allocate request data structure * @tfm: cipher handle to be registered with the request * @gfp: memory allocation flag that is handed to kmalloc by the API call. * * Allocate the request data structure that must be used with the ablkcipher * encrypt and decrypt API calls. During the allocation, the provided ablkcipher * handle is registered in the request data structure. * |
6eae29e7e crypto: doc - doc... |
894 |
* Return: allocated request handle in case of success, or NULL if out of memory |
f13ec330a crypto: doc - ABL... |
895 |
*/ |
32e3983fe [CRYPTO] api: Add... |
896 897 898 899 900 901 902 903 904 |
static inline struct ablkcipher_request *ablkcipher_request_alloc( struct crypto_ablkcipher *tfm, gfp_t gfp) { struct ablkcipher_request *req; req = kmalloc(sizeof(struct ablkcipher_request) + crypto_ablkcipher_reqsize(tfm), gfp); if (likely(req)) |
e196d6259 [CRYPTO] api: Add... |
905 |
ablkcipher_request_set_tfm(req, tfm); |
32e3983fe [CRYPTO] api: Add... |
906 907 908 |
return req; } |
f13ec330a crypto: doc - ABL... |
909 910 911 912 |
/** * ablkcipher_request_free() - zeroize and free request data structure * @req: request data structure cipher handle to be freed */ |
32e3983fe [CRYPTO] api: Add... |
913 914 |
static inline void ablkcipher_request_free(struct ablkcipher_request *req) { |
aef73cfcb crypto: async - U... |
915 |
kzfree(req); |
32e3983fe [CRYPTO] api: Add... |
916 |
} |
f13ec330a crypto: doc - ABL... |
917 918 919 920 |
/** * ablkcipher_request_set_callback() - set asynchronous callback function * @req: request handle * @flags: specify zero or an ORing of the flags |
0184cfe72 crypto: doc - fix... |
921 |
* CRYPTO_TFM_REQ_MAY_BACKLOG the request queue may back log and |
f13ec330a crypto: doc - ABL... |
922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 |
* increase the wait queue beyond the initial maximum size; * CRYPTO_TFM_REQ_MAY_SLEEP the request processing may sleep * @compl: callback function pointer to be registered with the request handle * @data: The data pointer refers to memory that is not used by the kernel * crypto API, but provided to the callback function for it to use. Here, * the caller can provide a reference to memory the callback function can * operate on. As the callback function is invoked asynchronously to the * related functionality, it may need to access data structures of the * related functionality which can be referenced using this pointer. The * callback function can access the memory via the "data" field in the * crypto_async_request data structure provided to the callback function. * * This function allows setting the callback function that is triggered once the * cipher operation completes. * * The callback function is registered with the ablkcipher_request handle and |
0184cfe72 crypto: doc - fix... |
938 |
* must comply with the following template:: |
f13ec330a crypto: doc - ABL... |
939 940 941 |
* * void callback_function(struct crypto_async_request *req, int error) */ |
32e3983fe [CRYPTO] api: Add... |
942 943 |
static inline void ablkcipher_request_set_callback( struct ablkcipher_request *req, |
3e3dc25fe crypto: Resolve s... |
944 |
u32 flags, crypto_completion_t compl, void *data) |
32e3983fe [CRYPTO] api: Add... |
945 |
{ |
3e3dc25fe crypto: Resolve s... |
946 |
req->base.complete = compl; |
32e3983fe [CRYPTO] api: Add... |
947 948 949 |
req->base.data = data; req->base.flags = flags; } |
f13ec330a crypto: doc - ABL... |
950 951 952 953 954 955 956 957 958 959 960 961 962 963 |
/** * ablkcipher_request_set_crypt() - set data buffers * @req: request handle * @src: source scatter / gather list * @dst: destination scatter / gather list * @nbytes: number of bytes to process from @src * @iv: IV for the cipher operation which must comply with the IV size defined * by crypto_ablkcipher_ivsize * * This function allows setting of the source data and destination data * scatter / gather lists. * * For encryption, the source is treated as the plaintext and the * destination is the ciphertext. For a decryption operation, the use is |
379dcfb40 crypto: doc - rem... |
964 |
* reversed - the source is the ciphertext and the destination is the plaintext. |
f13ec330a crypto: doc - ABL... |
965 |
*/ |
32e3983fe [CRYPTO] api: Add... |
966 967 968 969 970 971 972 973 974 975 |
static inline void ablkcipher_request_set_crypt( struct ablkcipher_request *req, struct scatterlist *src, struct scatterlist *dst, unsigned int nbytes, void *iv) { req->src = src; req->dst = dst; req->nbytes = nbytes; req->info = iv; } |
fced7b026 crypto: doc - AEA... |
976 |
/** |
58284f0d6 crypto: doc - BLK... |
977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 |
* DOC: Synchronous Block Cipher API * * The synchronous block cipher API is used with the ciphers of type * CRYPTO_ALG_TYPE_BLKCIPHER (listed as type "blkcipher" in /proc/crypto) * * Synchronous calls, have a context in the tfm. But since a single tfm can be * used in multiple calls and in parallel, this info should not be changeable * (unless a lock is used). This applies, for example, to the symmetric key. * However, the IV is changeable, so there is an iv field in blkcipher_tfm * structure for synchronous blkcipher api. So, its the only state info that can * be kept for synchronous calls without using a big lock across a tfm. * * The block cipher API allows the use of a complete cipher, i.e. a cipher * consisting of a template (a block chaining mode) and a single block cipher * primitive (e.g. AES). * * The plaintext data buffer and the ciphertext data buffer are pointed to * by using scatter/gather lists. The cipher operation is performed * on all segments of the provided scatter/gather lists. * * The kernel crypto API supports a cipher operation "in-place" which means that * the caller may provide the same scatter/gather list for the plaintext and * cipher text. After the completion of the cipher operation, the plaintext * data is replaced with the ciphertext data in case of an encryption and vice * versa for a decryption. The caller must ensure that the scatter/gather lists * for the output data point to sufficiently large buffers, i.e. multiples of * the block size of the cipher. */ |
5cde0af2a [CRYPTO] cipher: ... |
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 |
static inline struct crypto_blkcipher *__crypto_blkcipher_cast( struct crypto_tfm *tfm) { return (struct crypto_blkcipher *)tfm; } static inline struct crypto_blkcipher *crypto_blkcipher_cast( struct crypto_tfm *tfm) { BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER); return __crypto_blkcipher_cast(tfm); } |
58284f0d6 crypto: doc - BLK... |
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 |
/** * crypto_alloc_blkcipher() - allocate synchronous block cipher handle * @alg_name: is the cra_name / name or cra_driver_name / driver name of the * blkcipher cipher * @type: specifies the type of the cipher * @mask: specifies the mask for the cipher * * Allocate a cipher handle for a block cipher. The returned struct * crypto_blkcipher is the cipher handle that is required for any subsequent * API invocation for that block cipher. * * Return: allocated cipher handle in case of success; IS_ERR() is true in case * of an error, PTR_ERR() returns the error code. */ |
5cde0af2a [CRYPTO] cipher: ... |
1031 1032 1033 |
static inline struct crypto_blkcipher *crypto_alloc_blkcipher( const char *alg_name, u32 type, u32 mask) { |
332f8840f [CRYPTO] ablkciph... |
1034 |
type &= ~CRYPTO_ALG_TYPE_MASK; |
5cde0af2a [CRYPTO] cipher: ... |
1035 |
type |= CRYPTO_ALG_TYPE_BLKCIPHER; |
332f8840f [CRYPTO] ablkciph... |
1036 |
mask |= CRYPTO_ALG_TYPE_MASK; |
5cde0af2a [CRYPTO] cipher: ... |
1037 1038 1039 1040 1041 1042 1043 1044 1045 |
return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask)); } static inline struct crypto_tfm *crypto_blkcipher_tfm( struct crypto_blkcipher *tfm) { return &tfm->base; } |
58284f0d6 crypto: doc - BLK... |
1046 1047 1048 1049 |
/** * crypto_free_blkcipher() - zeroize and free the block cipher handle * @tfm: cipher handle to be freed */ |
5cde0af2a [CRYPTO] cipher: ... |
1050 1051 1052 1053 |
static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm) { crypto_free_tfm(crypto_blkcipher_tfm(tfm)); } |
58284f0d6 crypto: doc - BLK... |
1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 |
/** * crypto_has_blkcipher() - Search for the availability of a block cipher * @alg_name: is the cra_name / name or cra_driver_name / driver name of the * block cipher * @type: specifies the type of the cipher * @mask: specifies the mask for the cipher * * Return: true when the block cipher is known to the kernel crypto API; false * otherwise */ |
fce32d70b [CRYPTO] api: Add... |
1064 1065 |
static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask) { |
332f8840f [CRYPTO] ablkciph... |
1066 |
type &= ~CRYPTO_ALG_TYPE_MASK; |
fce32d70b [CRYPTO] api: Add... |
1067 |
type |= CRYPTO_ALG_TYPE_BLKCIPHER; |
332f8840f [CRYPTO] ablkciph... |
1068 |
mask |= CRYPTO_ALG_TYPE_MASK; |
fce32d70b [CRYPTO] api: Add... |
1069 1070 1071 |
return crypto_has_alg(alg_name, type, mask); } |
58284f0d6 crypto: doc - BLK... |
1072 1073 1074 1075 1076 1077 |
/** * crypto_blkcipher_name() - return the name / cra_name from the cipher handle * @tfm: cipher handle * * Return: The character string holding the name of the cipher */ |
5cde0af2a [CRYPTO] cipher: ... |
1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 |
static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm) { return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm)); } static inline struct blkcipher_tfm *crypto_blkcipher_crt( struct crypto_blkcipher *tfm) { return &crypto_blkcipher_tfm(tfm)->crt_blkcipher; } static inline struct blkcipher_alg *crypto_blkcipher_alg( struct crypto_blkcipher *tfm) { return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher; } |
58284f0d6 crypto: doc - BLK... |
1094 1095 1096 1097 1098 1099 1100 1101 1102 |
/** * crypto_blkcipher_ivsize() - obtain IV size * @tfm: cipher handle * * The size of the IV for the block cipher referenced by the cipher handle is * returned. This IV size may be zero if the cipher does not need an IV. * * Return: IV size in bytes */ |
5cde0af2a [CRYPTO] cipher: ... |
1103 1104 1105 1106 |
static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm) { return crypto_blkcipher_alg(tfm)->ivsize; } |
58284f0d6 crypto: doc - BLK... |
1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 |
/** * crypto_blkcipher_blocksize() - obtain block size of cipher * @tfm: cipher handle * * The block size for the block cipher referenced with the cipher handle is * returned. The caller may use that information to allocate appropriate * memory for the data returned by the encryption or decryption operation. * * Return: block size of cipher */ |
5cde0af2a [CRYPTO] cipher: ... |
1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 |
static inline unsigned int crypto_blkcipher_blocksize( struct crypto_blkcipher *tfm) { return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm)); } static inline unsigned int crypto_blkcipher_alignmask( struct crypto_blkcipher *tfm) { return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm)); } static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm) { return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm)); } static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm, u32 flags) { crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags); } static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm, u32 flags) { crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags); } |
58284f0d6 crypto: doc - BLK... |
1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 |
/** * crypto_blkcipher_setkey() - set key for cipher * @tfm: cipher handle * @key: buffer holding the key * @keylen: length of the key in bytes * * The caller provided key is set for the block cipher referenced by the cipher * handle. * * Note, the key length determines the cipher type. Many block ciphers implement * different cipher modes depending on the key size, such as AES-128 vs AES-192 * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128 * is performed. * * Return: 0 if the setting of the key was successful; < 0 if an error occurred */ |
5cde0af2a [CRYPTO] cipher: ... |
1161 1162 1163 1164 1165 1166 |
static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm, const u8 *key, unsigned int keylen) { return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm), key, keylen); } |
58284f0d6 crypto: doc - BLK... |
1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 |
/** * crypto_blkcipher_encrypt() - encrypt plaintext * @desc: reference to the block cipher handle with meta data * @dst: scatter/gather list that is filled by the cipher operation with the * ciphertext * @src: scatter/gather list that holds the plaintext * @nbytes: number of bytes of the plaintext to encrypt. * * Encrypt plaintext data using the IV set by the caller with a preceding * call of crypto_blkcipher_set_iv. * * The blkcipher_desc data structure must be filled by the caller and can * reside on the stack. The caller must fill desc as follows: desc.tfm is filled * with the block cipher handle; desc.flags is filled with either * CRYPTO_TFM_REQ_MAY_SLEEP or 0. * * Return: 0 if the cipher operation was successful; < 0 if an error occurred */ |
5cde0af2a [CRYPTO] cipher: ... |
1185 1186 1187 1188 1189 1190 1191 1192 |
static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { desc->info = crypto_blkcipher_crt(desc->tfm)->iv; return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes); } |
58284f0d6 crypto: doc - BLK... |
1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 |
/** * crypto_blkcipher_encrypt_iv() - encrypt plaintext with dedicated IV * @desc: reference to the block cipher handle with meta data * @dst: scatter/gather list that is filled by the cipher operation with the * ciphertext * @src: scatter/gather list that holds the plaintext * @nbytes: number of bytes of the plaintext to encrypt. * * Encrypt plaintext data with the use of an IV that is solely used for this * cipher operation. Any previously set IV is not used. * * The blkcipher_desc data structure must be filled by the caller and can * reside on the stack. The caller must fill desc as follows: desc.tfm is filled * with the block cipher handle; desc.info is filled with the IV to be used for * the current operation; desc.flags is filled with either * CRYPTO_TFM_REQ_MAY_SLEEP or 0. * * Return: 0 if the cipher operation was successful; < 0 if an error occurred */ |
5cde0af2a [CRYPTO] cipher: ... |
1212 1213 1214 1215 1216 1217 1218 |
static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes); } |
58284f0d6 crypto: doc - BLK... |
1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 |
/** * crypto_blkcipher_decrypt() - decrypt ciphertext * @desc: reference to the block cipher handle with meta data * @dst: scatter/gather list that is filled by the cipher operation with the * plaintext * @src: scatter/gather list that holds the ciphertext * @nbytes: number of bytes of the ciphertext to decrypt. * * Decrypt ciphertext data using the IV set by the caller with a preceding * call of crypto_blkcipher_set_iv. * * The blkcipher_desc data structure must be filled by the caller as documented * for the crypto_blkcipher_encrypt call above. * * Return: 0 if the cipher operation was successful; < 0 if an error occurred * */ |
5cde0af2a [CRYPTO] cipher: ... |
1236 1237 1238 1239 1240 1241 1242 1243 |
static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { desc->info = crypto_blkcipher_crt(desc->tfm)->iv; return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes); } |
58284f0d6 crypto: doc - BLK... |
1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 |
/** * crypto_blkcipher_decrypt_iv() - decrypt ciphertext with dedicated IV * @desc: reference to the block cipher handle with meta data * @dst: scatter/gather list that is filled by the cipher operation with the * plaintext * @src: scatter/gather list that holds the ciphertext * @nbytes: number of bytes of the ciphertext to decrypt. * * Decrypt ciphertext data with the use of an IV that is solely used for this * cipher operation. Any previously set IV is not used. * * The blkcipher_desc data structure must be filled by the caller as documented * for the crypto_blkcipher_encrypt_iv call above. * * Return: 0 if the cipher operation was successful; < 0 if an error occurred */ |
5cde0af2a [CRYPTO] cipher: ... |
1260 1261 1262 1263 1264 1265 1266 |
static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) { return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes); } |
58284f0d6 crypto: doc - BLK... |
1267 1268 1269 1270 1271 1272 1273 1274 1275 |
/** * crypto_blkcipher_set_iv() - set IV for cipher * @tfm: cipher handle * @src: buffer holding the IV * @len: length of the IV in bytes * * The caller provided IV is set for the block cipher referenced by the cipher * handle. */ |
5cde0af2a [CRYPTO] cipher: ... |
1276 1277 1278 1279 1280 |
static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm, const u8 *src, unsigned int len) { memcpy(crypto_blkcipher_crt(tfm)->iv, src, len); } |
58284f0d6 crypto: doc - BLK... |
1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 |
/** * crypto_blkcipher_get_iv() - obtain IV from cipher * @tfm: cipher handle * @dst: buffer filled with the IV * @len: length of the buffer dst * * The caller can obtain the IV set for the block cipher referenced by the * cipher handle and store it into the user-provided buffer. If the buffer * has an insufficient space, the IV is truncated to fit the buffer. */ |
5cde0af2a [CRYPTO] cipher: ... |
1291 1292 1293 1294 1295 |
static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm, u8 *dst, unsigned int len) { memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len); } |
16e61030a crypto: doc - CIP... |
1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 |
/** * DOC: Single Block Cipher API * * The single block cipher API is used with the ciphers of type * CRYPTO_ALG_TYPE_CIPHER (listed as type "cipher" in /proc/crypto). * * Using the single block cipher API calls, operations with the basic cipher * primitive can be implemented. These cipher primitives exclude any block * chaining operations including IV handling. * * The purpose of this single block cipher API is to support the implementation * of templates or other concepts that only need to perform the cipher operation * on one block at a time. Templates invoke the underlying cipher primitive * block-wise and process either the input or the output data of these cipher * operations. */ |
f28776a36 [CRYPTO] cipher: ... |
1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 |
static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm) { return (struct crypto_cipher *)tfm; } static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm) { BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER); return __crypto_cipher_cast(tfm); } |
16e61030a crypto: doc - CIP... |
1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 |
/** * crypto_alloc_cipher() - allocate single block cipher handle * @alg_name: is the cra_name / name or cra_driver_name / driver name of the * single block cipher * @type: specifies the type of the cipher * @mask: specifies the mask for the cipher * * Allocate a cipher handle for a single block cipher. The returned struct * crypto_cipher is the cipher handle that is required for any subsequent API * invocation for that single block cipher. * * Return: allocated cipher handle in case of success; IS_ERR() is true in case * of an error, PTR_ERR() returns the error code. */ |
f28776a36 [CRYPTO] cipher: ... |
1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 |
static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_CIPHER; mask |= CRYPTO_ALG_TYPE_MASK; return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask)); } static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm) { |
78a1fe4f2 [CRYPTO] api: Use... |
1348 |
return &tfm->base; |
f28776a36 [CRYPTO] cipher: ... |
1349 |
} |
16e61030a crypto: doc - CIP... |
1350 1351 1352 1353 |
/** * crypto_free_cipher() - zeroize and free the single block cipher handle * @tfm: cipher handle to be freed */ |
f28776a36 [CRYPTO] cipher: ... |
1354 1355 1356 1357 |
static inline void crypto_free_cipher(struct crypto_cipher *tfm) { crypto_free_tfm(crypto_cipher_tfm(tfm)); } |
16e61030a crypto: doc - CIP... |
1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 |
/** * crypto_has_cipher() - Search for the availability of a single block cipher * @alg_name: is the cra_name / name or cra_driver_name / driver name of the * single block cipher * @type: specifies the type of the cipher * @mask: specifies the mask for the cipher * * Return: true when the single block cipher is known to the kernel crypto API; * false otherwise */ |
fce32d70b [CRYPTO] api: Add... |
1368 1369 1370 1371 1372 1373 1374 1375 |
static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_CIPHER; mask |= CRYPTO_ALG_TYPE_MASK; return crypto_has_alg(alg_name, type, mask); } |
f28776a36 [CRYPTO] cipher: ... |
1376 1377 1378 1379 |
static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm) { return &crypto_cipher_tfm(tfm)->crt_cipher; } |
16e61030a crypto: doc - CIP... |
1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 |
/** * crypto_cipher_blocksize() - obtain block size for cipher * @tfm: cipher handle * * The block size for the single block cipher referenced with the cipher handle * tfm is returned. The caller may use that information to allocate appropriate * memory for the data returned by the encryption or decryption operation * * Return: block size of cipher */ |
f28776a36 [CRYPTO] cipher: ... |
1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 |
static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm) { return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm)); } static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm) { return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm)); } static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm) { return crypto_tfm_get_flags(crypto_cipher_tfm(tfm)); } static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm, u32 flags) { crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags); } static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm, u32 flags) { crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags); } |
16e61030a crypto: doc - CIP... |
1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 |
/** * crypto_cipher_setkey() - set key for cipher * @tfm: cipher handle * @key: buffer holding the key * @keylen: length of the key in bytes * * The caller provided key is set for the single block cipher referenced by the * cipher handle. * * Note, the key length determines the cipher type. Many block ciphers implement * different cipher modes depending on the key size, such as AES-128 vs AES-192 * vs. AES-256. When providing a 16 byte key for an AES cipher handle, AES-128 * is performed. * * Return: 0 if the setting of the key was successful; < 0 if an error occurred */ |
7226bc877 [CRYPTO] api: Mar... |
1432 1433 1434 1435 1436 1437 |
static inline int crypto_cipher_setkey(struct crypto_cipher *tfm, const u8 *key, unsigned int keylen) { return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm), key, keylen); } |
16e61030a crypto: doc - CIP... |
1438 1439 1440 1441 1442 1443 1444 1445 1446 |
/** * crypto_cipher_encrypt_one() - encrypt one block of plaintext * @tfm: cipher handle * @dst: points to the buffer that will be filled with the ciphertext * @src: buffer holding the plaintext to be encrypted * * Invoke the encryption operation of one block. The caller must ensure that * the plaintext and ciphertext buffers are at least one block in size. */ |
f28776a36 [CRYPTO] cipher: ... |
1447 1448 1449 1450 1451 1452 |
static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm, u8 *dst, const u8 *src) { crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm), dst, src); } |
16e61030a crypto: doc - CIP... |
1453 1454 1455 1456 1457 1458 1459 1460 1461 |
/** * crypto_cipher_decrypt_one() - decrypt one block of ciphertext * @tfm: cipher handle * @dst: points to the buffer that will be filled with the plaintext * @src: buffer holding the ciphertext to be decrypted * * Invoke the decryption operation of one block. The caller must ensure that * the plaintext and ciphertext buffers are at least one block in size. */ |
f28776a36 [CRYPTO] cipher: ... |
1462 1463 1464 1465 1466 1467 |
static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm, u8 *dst, const u8 *src) { crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm), dst, src); } |
fce32d70b [CRYPTO] api: Add... |
1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 |
static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm) { return (struct crypto_comp *)tfm; } static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm) { BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) & CRYPTO_ALG_TYPE_MASK); return __crypto_comp_cast(tfm); } static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_COMPRESS; mask |= CRYPTO_ALG_TYPE_MASK; return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask)); } static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm) { |
78a1fe4f2 [CRYPTO] api: Use... |
1492 |
return &tfm->base; |
fce32d70b [CRYPTO] api: Add... |
1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 |
} static inline void crypto_free_comp(struct crypto_comp *tfm) { crypto_free_tfm(crypto_comp_tfm(tfm)); } static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask) { type &= ~CRYPTO_ALG_TYPE_MASK; type |= CRYPTO_ALG_TYPE_COMPRESS; mask |= CRYPTO_ALG_TYPE_MASK; return crypto_has_alg(alg_name, type, mask); } |
e4d5b79c6 [CRYPTO] users: U... |
1508 1509 1510 1511 |
static inline const char *crypto_comp_name(struct crypto_comp *tfm) { return crypto_tfm_alg_name(crypto_comp_tfm(tfm)); } |
fce32d70b [CRYPTO] api: Add... |
1512 1513 1514 1515 1516 1517 |
static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm) { return &crypto_comp_tfm(tfm)->crt_compress; } static inline int crypto_comp_compress(struct crypto_comp *tfm, |
1da177e4c Linux-2.6.12-rc2 |
1518 1519 1520 |
const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { |
78a1fe4f2 [CRYPTO] api: Use... |
1521 1522 |
return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm), src, slen, dst, dlen); |
1da177e4c Linux-2.6.12-rc2 |
1523 |
} |
fce32d70b [CRYPTO] api: Add... |
1524 |
static inline int crypto_comp_decompress(struct crypto_comp *tfm, |
1da177e4c Linux-2.6.12-rc2 |
1525 1526 1527 |
const u8 *src, unsigned int slen, u8 *dst, unsigned int *dlen) { |
78a1fe4f2 [CRYPTO] api: Use... |
1528 1529 |
return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm), src, slen, dst, dlen); |
1da177e4c Linux-2.6.12-rc2 |
1530 |
} |
1da177e4c Linux-2.6.12-rc2 |
1531 |
#endif /* _LINUX_CRYPTO_H */ |