]>
Commit | Line | Data |
---|---|---|
49788fe2 AB |
1 | /* |
2 | * linux/arch/arm64/crypto/aes-glue.c - wrapper code for ARMv8 AES | |
3 | * | |
4 | * Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <asm/neon.h> | |
12 | #include <asm/hwcap.h> | |
13 | #include <crypto/aes.h> | |
14 | #include <crypto/ablk_helper.h> | |
15 | #include <crypto/algapi.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/cpufeature.h> | |
49abc0d2 | 18 | #include <crypto/xts.h> |
49788fe2 | 19 | |
12ac3efe AB |
20 | #include "aes-ce-setkey.h" |
21 | ||
49788fe2 AB |
22 | #ifdef USE_V8_CRYPTO_EXTENSIONS |
23 | #define MODE "ce" | |
24 | #define PRIO 300 | |
12ac3efe AB |
25 | #define aes_setkey ce_aes_setkey |
26 | #define aes_expandkey ce_aes_expandkey | |
49788fe2 AB |
27 | #define aes_ecb_encrypt ce_aes_ecb_encrypt |
28 | #define aes_ecb_decrypt ce_aes_ecb_decrypt | |
29 | #define aes_cbc_encrypt ce_aes_cbc_encrypt | |
30 | #define aes_cbc_decrypt ce_aes_cbc_decrypt | |
31 | #define aes_ctr_encrypt ce_aes_ctr_encrypt | |
32 | #define aes_xts_encrypt ce_aes_xts_encrypt | |
33 | #define aes_xts_decrypt ce_aes_xts_decrypt | |
34 | MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 Crypto Extensions"); | |
35 | #else | |
36 | #define MODE "neon" | |
37 | #define PRIO 200 | |
12ac3efe AB |
38 | #define aes_setkey crypto_aes_set_key |
39 | #define aes_expandkey crypto_aes_expand_key | |
49788fe2 AB |
40 | #define aes_ecb_encrypt neon_aes_ecb_encrypt |
41 | #define aes_ecb_decrypt neon_aes_ecb_decrypt | |
42 | #define aes_cbc_encrypt neon_aes_cbc_encrypt | |
43 | #define aes_cbc_decrypt neon_aes_cbc_decrypt | |
44 | #define aes_ctr_encrypt neon_aes_ctr_encrypt | |
45 | #define aes_xts_encrypt neon_aes_xts_encrypt | |
46 | #define aes_xts_decrypt neon_aes_xts_decrypt | |
47 | MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 NEON"); | |
5d26a105 KC |
48 | MODULE_ALIAS_CRYPTO("ecb(aes)"); |
49 | MODULE_ALIAS_CRYPTO("cbc(aes)"); | |
50 | MODULE_ALIAS_CRYPTO("ctr(aes)"); | |
51 | MODULE_ALIAS_CRYPTO("xts(aes)"); | |
49788fe2 AB |
52 | #endif |
53 | ||
54 | MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>"); | |
55 | MODULE_LICENSE("GPL v2"); | |
56 | ||
57 | /* defined in aes-modes.S */ | |
58 | asmlinkage void aes_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[], | |
59 | int rounds, int blocks, int first); | |
60 | asmlinkage void aes_ecb_decrypt(u8 out[], u8 const in[], u8 const rk[], | |
61 | int rounds, int blocks, int first); | |
62 | ||
63 | asmlinkage void aes_cbc_encrypt(u8 out[], u8 const in[], u8 const rk[], | |
64 | int rounds, int blocks, u8 iv[], int first); | |
65 | asmlinkage void aes_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[], | |
66 | int rounds, int blocks, u8 iv[], int first); | |
67 | ||
68 | asmlinkage void aes_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[], | |
69 | int rounds, int blocks, u8 ctr[], int first); | |
70 | ||
71 | asmlinkage void aes_xts_encrypt(u8 out[], u8 const in[], u8 const rk1[], | |
72 | int rounds, int blocks, u8 const rk2[], u8 iv[], | |
73 | int first); | |
74 | asmlinkage void aes_xts_decrypt(u8 out[], u8 const in[], u8 const rk1[], | |
75 | int rounds, int blocks, u8 const rk2[], u8 iv[], | |
76 | int first); | |
77 | ||
78 | struct crypto_aes_xts_ctx { | |
79 | struct crypto_aes_ctx key1; | |
80 | struct crypto_aes_ctx __aligned(8) key2; | |
81 | }; | |
82 | ||
83 | static int xts_set_key(struct crypto_tfm *tfm, const u8 *in_key, | |
84 | unsigned int key_len) | |
85 | { | |
86 | struct crypto_aes_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
87 | int ret; | |
88 | ||
28856a9e SM |
89 | ret = xts_check_key(tfm, in_key, key_len); |
90 | if (ret) | |
91 | return ret; | |
92 | ||
12ac3efe | 93 | ret = aes_expandkey(&ctx->key1, in_key, key_len / 2); |
49788fe2 | 94 | if (!ret) |
12ac3efe AB |
95 | ret = aes_expandkey(&ctx->key2, &in_key[key_len / 2], |
96 | key_len / 2); | |
49788fe2 AB |
97 | if (!ret) |
98 | return 0; | |
99 | ||
100 | tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
101 | return -EINVAL; | |
102 | } | |
103 | ||
104 | static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
105 | struct scatterlist *src, unsigned int nbytes) | |
106 | { | |
107 | struct crypto_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
108 | int err, first, rounds = 6 + ctx->key_length / 4; | |
109 | struct blkcipher_walk walk; | |
110 | unsigned int blocks; | |
111 | ||
112 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
113 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
114 | err = blkcipher_walk_virt(desc, &walk); | |
115 | ||
116 | kernel_neon_begin(); | |
117 | for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) { | |
118 | aes_ecb_encrypt(walk.dst.virt.addr, walk.src.virt.addr, | |
119 | (u8 *)ctx->key_enc, rounds, blocks, first); | |
f960d209 | 120 | err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE); |
49788fe2 AB |
121 | } |
122 | kernel_neon_end(); | |
123 | return err; | |
124 | } | |
125 | ||
126 | static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
127 | struct scatterlist *src, unsigned int nbytes) | |
128 | { | |
129 | struct crypto_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
130 | int err, first, rounds = 6 + ctx->key_length / 4; | |
131 | struct blkcipher_walk walk; | |
132 | unsigned int blocks; | |
133 | ||
134 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
135 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
136 | err = blkcipher_walk_virt(desc, &walk); | |
137 | ||
138 | kernel_neon_begin(); | |
139 | for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) { | |
140 | aes_ecb_decrypt(walk.dst.virt.addr, walk.src.virt.addr, | |
141 | (u8 *)ctx->key_dec, rounds, blocks, first); | |
f960d209 | 142 | err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE); |
49788fe2 AB |
143 | } |
144 | kernel_neon_end(); | |
145 | return err; | |
146 | } | |
147 | ||
148 | static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
149 | struct scatterlist *src, unsigned int nbytes) | |
150 | { | |
151 | struct crypto_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
152 | int err, first, rounds = 6 + ctx->key_length / 4; | |
153 | struct blkcipher_walk walk; | |
154 | unsigned int blocks; | |
155 | ||
156 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
157 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
158 | err = blkcipher_walk_virt(desc, &walk); | |
159 | ||
160 | kernel_neon_begin(); | |
161 | for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) { | |
162 | aes_cbc_encrypt(walk.dst.virt.addr, walk.src.virt.addr, | |
163 | (u8 *)ctx->key_enc, rounds, blocks, walk.iv, | |
164 | first); | |
f960d209 | 165 | err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE); |
49788fe2 AB |
166 | } |
167 | kernel_neon_end(); | |
168 | return err; | |
169 | } | |
170 | ||
171 | static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
172 | struct scatterlist *src, unsigned int nbytes) | |
173 | { | |
174 | struct crypto_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
175 | int err, first, rounds = 6 + ctx->key_length / 4; | |
176 | struct blkcipher_walk walk; | |
177 | unsigned int blocks; | |
178 | ||
179 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
180 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
181 | err = blkcipher_walk_virt(desc, &walk); | |
182 | ||
183 | kernel_neon_begin(); | |
184 | for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) { | |
185 | aes_cbc_decrypt(walk.dst.virt.addr, walk.src.virt.addr, | |
186 | (u8 *)ctx->key_dec, rounds, blocks, walk.iv, | |
187 | first); | |
f960d209 | 188 | err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE); |
49788fe2 AB |
189 | } |
190 | kernel_neon_end(); | |
191 | return err; | |
192 | } | |
193 | ||
194 | static int ctr_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
195 | struct scatterlist *src, unsigned int nbytes) | |
196 | { | |
197 | struct crypto_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
198 | int err, first, rounds = 6 + ctx->key_length / 4; | |
199 | struct blkcipher_walk walk; | |
200 | int blocks; | |
201 | ||
202 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
203 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
204 | err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); | |
205 | ||
206 | first = 1; | |
207 | kernel_neon_begin(); | |
208 | while ((blocks = (walk.nbytes / AES_BLOCK_SIZE))) { | |
209 | aes_ctr_encrypt(walk.dst.virt.addr, walk.src.virt.addr, | |
210 | (u8 *)ctx->key_enc, rounds, blocks, walk.iv, | |
211 | first); | |
212 | first = 0; | |
213 | nbytes -= blocks * AES_BLOCK_SIZE; | |
214 | if (nbytes && nbytes == walk.nbytes % AES_BLOCK_SIZE) | |
215 | break; | |
216 | err = blkcipher_walk_done(desc, &walk, | |
217 | walk.nbytes % AES_BLOCK_SIZE); | |
218 | } | |
2db34e78 | 219 | if (walk.nbytes % AES_BLOCK_SIZE) { |
49788fe2 AB |
220 | u8 *tdst = walk.dst.virt.addr + blocks * AES_BLOCK_SIZE; |
221 | u8 *tsrc = walk.src.virt.addr + blocks * AES_BLOCK_SIZE; | |
222 | u8 __aligned(8) tail[AES_BLOCK_SIZE]; | |
223 | ||
224 | /* | |
225 | * Minimum alignment is 8 bytes, so if nbytes is <= 8, we need | |
226 | * to tell aes_ctr_encrypt() to only read half a block. | |
227 | */ | |
228 | blocks = (nbytes <= 8) ? -1 : 1; | |
229 | ||
230 | aes_ctr_encrypt(tail, tsrc, (u8 *)ctx->key_enc, rounds, | |
231 | blocks, walk.iv, first); | |
232 | memcpy(tdst, tail, nbytes); | |
233 | err = blkcipher_walk_done(desc, &walk, 0); | |
234 | } | |
235 | kernel_neon_end(); | |
236 | ||
237 | return err; | |
238 | } | |
239 | ||
240 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
241 | struct scatterlist *src, unsigned int nbytes) | |
242 | { | |
243 | struct crypto_aes_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
244 | int err, first, rounds = 6 + ctx->key1.key_length / 4; | |
245 | struct blkcipher_walk walk; | |
246 | unsigned int blocks; | |
247 | ||
248 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
249 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
250 | err = blkcipher_walk_virt(desc, &walk); | |
251 | ||
252 | kernel_neon_begin(); | |
253 | for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) { | |
254 | aes_xts_encrypt(walk.dst.virt.addr, walk.src.virt.addr, | |
255 | (u8 *)ctx->key1.key_enc, rounds, blocks, | |
256 | (u8 *)ctx->key2.key_enc, walk.iv, first); | |
f960d209 | 257 | err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE); |
49788fe2 AB |
258 | } |
259 | kernel_neon_end(); | |
260 | ||
261 | return err; | |
262 | } | |
263 | ||
264 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
265 | struct scatterlist *src, unsigned int nbytes) | |
266 | { | |
267 | struct crypto_aes_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
268 | int err, first, rounds = 6 + ctx->key1.key_length / 4; | |
269 | struct blkcipher_walk walk; | |
270 | unsigned int blocks; | |
271 | ||
272 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
273 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
274 | err = blkcipher_walk_virt(desc, &walk); | |
275 | ||
276 | kernel_neon_begin(); | |
277 | for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) { | |
278 | aes_xts_decrypt(walk.dst.virt.addr, walk.src.virt.addr, | |
279 | (u8 *)ctx->key1.key_dec, rounds, blocks, | |
280 | (u8 *)ctx->key2.key_enc, walk.iv, first); | |
f960d209 | 281 | err = blkcipher_walk_done(desc, &walk, walk.nbytes % AES_BLOCK_SIZE); |
49788fe2 AB |
282 | } |
283 | kernel_neon_end(); | |
284 | ||
285 | return err; | |
286 | } | |
287 | ||
288 | static struct crypto_alg aes_algs[] = { { | |
289 | .cra_name = "__ecb-aes-" MODE, | |
290 | .cra_driver_name = "__driver-ecb-aes-" MODE, | |
291 | .cra_priority = 0, | |
cd98411c SM |
292 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
293 | CRYPTO_ALG_INTERNAL, | |
49788fe2 AB |
294 | .cra_blocksize = AES_BLOCK_SIZE, |
295 | .cra_ctxsize = sizeof(struct crypto_aes_ctx), | |
296 | .cra_alignmask = 7, | |
297 | .cra_type = &crypto_blkcipher_type, | |
298 | .cra_module = THIS_MODULE, | |
299 | .cra_blkcipher = { | |
300 | .min_keysize = AES_MIN_KEY_SIZE, | |
301 | .max_keysize = AES_MAX_KEY_SIZE, | |
bee038a4 | 302 | .ivsize = 0, |
12ac3efe | 303 | .setkey = aes_setkey, |
49788fe2 AB |
304 | .encrypt = ecb_encrypt, |
305 | .decrypt = ecb_decrypt, | |
306 | }, | |
307 | }, { | |
308 | .cra_name = "__cbc-aes-" MODE, | |
309 | .cra_driver_name = "__driver-cbc-aes-" MODE, | |
310 | .cra_priority = 0, | |
cd98411c SM |
311 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
312 | CRYPTO_ALG_INTERNAL, | |
49788fe2 AB |
313 | .cra_blocksize = AES_BLOCK_SIZE, |
314 | .cra_ctxsize = sizeof(struct crypto_aes_ctx), | |
315 | .cra_alignmask = 7, | |
316 | .cra_type = &crypto_blkcipher_type, | |
317 | .cra_module = THIS_MODULE, | |
318 | .cra_blkcipher = { | |
319 | .min_keysize = AES_MIN_KEY_SIZE, | |
320 | .max_keysize = AES_MAX_KEY_SIZE, | |
321 | .ivsize = AES_BLOCK_SIZE, | |
12ac3efe | 322 | .setkey = aes_setkey, |
49788fe2 AB |
323 | .encrypt = cbc_encrypt, |
324 | .decrypt = cbc_decrypt, | |
325 | }, | |
326 | }, { | |
327 | .cra_name = "__ctr-aes-" MODE, | |
328 | .cra_driver_name = "__driver-ctr-aes-" MODE, | |
329 | .cra_priority = 0, | |
cd98411c SM |
330 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
331 | CRYPTO_ALG_INTERNAL, | |
49788fe2 AB |
332 | .cra_blocksize = 1, |
333 | .cra_ctxsize = sizeof(struct crypto_aes_ctx), | |
334 | .cra_alignmask = 7, | |
335 | .cra_type = &crypto_blkcipher_type, | |
336 | .cra_module = THIS_MODULE, | |
337 | .cra_blkcipher = { | |
338 | .min_keysize = AES_MIN_KEY_SIZE, | |
339 | .max_keysize = AES_MAX_KEY_SIZE, | |
340 | .ivsize = AES_BLOCK_SIZE, | |
12ac3efe | 341 | .setkey = aes_setkey, |
49788fe2 AB |
342 | .encrypt = ctr_encrypt, |
343 | .decrypt = ctr_encrypt, | |
344 | }, | |
345 | }, { | |
346 | .cra_name = "__xts-aes-" MODE, | |
347 | .cra_driver_name = "__driver-xts-aes-" MODE, | |
348 | .cra_priority = 0, | |
cd98411c SM |
349 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
350 | CRYPTO_ALG_INTERNAL, | |
49788fe2 AB |
351 | .cra_blocksize = AES_BLOCK_SIZE, |
352 | .cra_ctxsize = sizeof(struct crypto_aes_xts_ctx), | |
353 | .cra_alignmask = 7, | |
354 | .cra_type = &crypto_blkcipher_type, | |
355 | .cra_module = THIS_MODULE, | |
356 | .cra_blkcipher = { | |
357 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
358 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
359 | .ivsize = AES_BLOCK_SIZE, | |
360 | .setkey = xts_set_key, | |
361 | .encrypt = xts_encrypt, | |
362 | .decrypt = xts_decrypt, | |
363 | }, | |
364 | }, { | |
365 | .cra_name = "ecb(aes)", | |
366 | .cra_driver_name = "ecb-aes-" MODE, | |
367 | .cra_priority = PRIO, | |
368 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, | |
369 | .cra_blocksize = AES_BLOCK_SIZE, | |
370 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
371 | .cra_alignmask = 7, | |
372 | .cra_type = &crypto_ablkcipher_type, | |
373 | .cra_module = THIS_MODULE, | |
374 | .cra_init = ablk_init, | |
375 | .cra_exit = ablk_exit, | |
376 | .cra_ablkcipher = { | |
377 | .min_keysize = AES_MIN_KEY_SIZE, | |
378 | .max_keysize = AES_MAX_KEY_SIZE, | |
bee038a4 | 379 | .ivsize = 0, |
49788fe2 AB |
380 | .setkey = ablk_set_key, |
381 | .encrypt = ablk_encrypt, | |
382 | .decrypt = ablk_decrypt, | |
383 | } | |
384 | }, { | |
385 | .cra_name = "cbc(aes)", | |
386 | .cra_driver_name = "cbc-aes-" MODE, | |
387 | .cra_priority = PRIO, | |
388 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, | |
389 | .cra_blocksize = AES_BLOCK_SIZE, | |
390 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
391 | .cra_alignmask = 7, | |
392 | .cra_type = &crypto_ablkcipher_type, | |
393 | .cra_module = THIS_MODULE, | |
394 | .cra_init = ablk_init, | |
395 | .cra_exit = ablk_exit, | |
396 | .cra_ablkcipher = { | |
397 | .min_keysize = AES_MIN_KEY_SIZE, | |
398 | .max_keysize = AES_MAX_KEY_SIZE, | |
399 | .ivsize = AES_BLOCK_SIZE, | |
400 | .setkey = ablk_set_key, | |
401 | .encrypt = ablk_encrypt, | |
402 | .decrypt = ablk_decrypt, | |
403 | } | |
404 | }, { | |
405 | .cra_name = "ctr(aes)", | |
406 | .cra_driver_name = "ctr-aes-" MODE, | |
407 | .cra_priority = PRIO, | |
408 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, | |
409 | .cra_blocksize = 1, | |
410 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
411 | .cra_alignmask = 7, | |
412 | .cra_type = &crypto_ablkcipher_type, | |
413 | .cra_module = THIS_MODULE, | |
414 | .cra_init = ablk_init, | |
415 | .cra_exit = ablk_exit, | |
416 | .cra_ablkcipher = { | |
417 | .min_keysize = AES_MIN_KEY_SIZE, | |
418 | .max_keysize = AES_MAX_KEY_SIZE, | |
419 | .ivsize = AES_BLOCK_SIZE, | |
420 | .setkey = ablk_set_key, | |
421 | .encrypt = ablk_encrypt, | |
422 | .decrypt = ablk_decrypt, | |
423 | } | |
424 | }, { | |
425 | .cra_name = "xts(aes)", | |
426 | .cra_driver_name = "xts-aes-" MODE, | |
427 | .cra_priority = PRIO, | |
428 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER|CRYPTO_ALG_ASYNC, | |
429 | .cra_blocksize = AES_BLOCK_SIZE, | |
430 | .cra_ctxsize = sizeof(struct async_helper_ctx), | |
431 | .cra_alignmask = 7, | |
432 | .cra_type = &crypto_ablkcipher_type, | |
433 | .cra_module = THIS_MODULE, | |
434 | .cra_init = ablk_init, | |
435 | .cra_exit = ablk_exit, | |
436 | .cra_ablkcipher = { | |
437 | .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
438 | .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
439 | .ivsize = AES_BLOCK_SIZE, | |
440 | .setkey = ablk_set_key, | |
441 | .encrypt = ablk_encrypt, | |
442 | .decrypt = ablk_decrypt, | |
443 | } | |
444 | } }; | |
445 | ||
446 | static int __init aes_init(void) | |
447 | { | |
448 | return crypto_register_algs(aes_algs, ARRAY_SIZE(aes_algs)); | |
449 | } | |
450 | ||
451 | static void __exit aes_exit(void) | |
452 | { | |
453 | crypto_unregister_algs(aes_algs, ARRAY_SIZE(aes_algs)); | |
454 | } | |
455 | ||
456 | #ifdef USE_V8_CRYPTO_EXTENSIONS | |
457 | module_cpu_feature_match(AES, aes_init); | |
458 | #else | |
459 | module_init(aes_init); | |
460 | #endif | |
461 | module_exit(aes_exit); |