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Linux 4.13.16
[linux/fpc-iii.git] / arch / arm64 / crypto / aes-glue.c
blobbcf596b0197ef31cfffa60e04c69cd652f5eac09
1 /*
2 * linux/arch/arm64/crypto/aes-glue.c - wrapper code for ARMv8 AES
3 *
4 * Copyright (C) 2013 - 2017 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/internal/hash.h>
15 #include <crypto/internal/simd.h>
16 #include <crypto/internal/skcipher.h>
17 #include <linux/module.h>
18 #include <linux/cpufeature.h>
19 #include <crypto/xts.h>
20
21 #include "aes-ce-setkey.h"
22
23 #ifdef USE_V8_CRYPTO_EXTENSIONS
24 #define MODE "ce"
25 #define PRIO 300
26 #define aes_setkey ce_aes_setkey
27 #define aes_expandkey ce_aes_expandkey
28 #define aes_ecb_encrypt ce_aes_ecb_encrypt
29 #define aes_ecb_decrypt ce_aes_ecb_decrypt
30 #define aes_cbc_encrypt ce_aes_cbc_encrypt
31 #define aes_cbc_decrypt ce_aes_cbc_decrypt
32 #define aes_ctr_encrypt ce_aes_ctr_encrypt
33 #define aes_xts_encrypt ce_aes_xts_encrypt
34 #define aes_xts_decrypt ce_aes_xts_decrypt
35 #define aes_mac_update ce_aes_mac_update
36 MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 Crypto Extensions");
37 #else
38 #define MODE "neon"
39 #define PRIO 200
40 #define aes_setkey crypto_aes_set_key
41 #define aes_expandkey crypto_aes_expand_key
42 #define aes_ecb_encrypt neon_aes_ecb_encrypt
43 #define aes_ecb_decrypt neon_aes_ecb_decrypt
44 #define aes_cbc_encrypt neon_aes_cbc_encrypt
45 #define aes_cbc_decrypt neon_aes_cbc_decrypt
46 #define aes_ctr_encrypt neon_aes_ctr_encrypt
47 #define aes_xts_encrypt neon_aes_xts_encrypt
48 #define aes_xts_decrypt neon_aes_xts_decrypt
49 #define aes_mac_update neon_aes_mac_update
50 MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS using ARMv8 NEON");
51 MODULE_ALIAS_CRYPTO("ecb(aes)");
52 MODULE_ALIAS_CRYPTO("cbc(aes)");
53 MODULE_ALIAS_CRYPTO("ctr(aes)");
54 MODULE_ALIAS_CRYPTO("xts(aes)");
55 MODULE_ALIAS_CRYPTO("cmac(aes)");
56 MODULE_ALIAS_CRYPTO("xcbc(aes)");
57 MODULE_ALIAS_CRYPTO("cbcmac(aes)");
58 #endif
59
60 MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
61 MODULE_LICENSE("GPL v2");
62
63 /* defined in aes-modes.S */
64 asmlinkage void aes_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[],
65 int rounds, int blocks, int first);
66 asmlinkage void aes_ecb_decrypt(u8 out[], u8 const in[], u8 const rk[],
67 int rounds, int blocks, int first);
68
69 asmlinkage void aes_cbc_encrypt(u8 out[], u8 const in[], u8 const rk[],
70 int rounds, int blocks, u8 iv[], int first);
71 asmlinkage void aes_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[],
72 int rounds, int blocks, u8 iv[], int first);
73
74 asmlinkage void aes_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[],
75 int rounds, int blocks, u8 ctr[], int first);
76
77 asmlinkage void aes_xts_encrypt(u8 out[], u8 const in[], u8 const rk1[],
78 int rounds, int blocks, u8 const rk2[], u8 iv[],
79 int first);
80 asmlinkage void aes_xts_decrypt(u8 out[], u8 const in[], u8 const rk1[],
81 int rounds, int blocks, u8 const rk2[], u8 iv[],
82 int first);
83
84 asmlinkage void aes_mac_update(u8 const in[], u32 const rk[], int rounds,
85 int blocks, u8 dg[], int enc_before,
86 int enc_after);
87
88 struct crypto_aes_xts_ctx {
89 struct crypto_aes_ctx key1;
90 struct crypto_aes_ctx __aligned(8) key2;
91 };
92
93 struct mac_tfm_ctx {
94 struct crypto_aes_ctx key;
95 u8 __aligned(8) consts[];
96 };
97
98 struct mac_desc_ctx {
99 unsigned int len;
100 u8 dg[AES_BLOCK_SIZE];
101 };
102
103 static int skcipher_aes_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
104 unsigned int key_len)
105 {
106 return aes_setkey(crypto_skcipher_tfm(tfm), in_key, key_len);
107 }
108
109 static int xts_set_key(struct crypto_skcipher *tfm, const u8 *in_key,
110 unsigned int key_len)
111 {
112 struct crypto_aes_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
113 int ret;
114
115 ret = xts_verify_key(tfm, in_key, key_len);
116 if (ret)
117 return ret;
118
119 ret = aes_expandkey(&ctx->key1, in_key, key_len / 2);
120 if (!ret)
121 ret = aes_expandkey(&ctx->key2, &in_key[key_len / 2],
122 key_len / 2);
123 if (!ret)
124 return 0;
125
126 crypto_skcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
127 return -EINVAL;
128 }
129
130 static int ecb_encrypt(struct skcipher_request *req)
131 {
132 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
133 struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
134 int err, first, rounds = 6 + ctx->key_length / 4;
135 struct skcipher_walk walk;
136 unsigned int blocks;
137
138 err = skcipher_walk_virt(&walk, req, true);
139
140 kernel_neon_begin();
141 for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) {
142 aes_ecb_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
143 (u8 *)ctx->key_enc, rounds, blocks, first);
144 err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
145 }
146 kernel_neon_end();
147 return err;
148 }
149
150 static int ecb_decrypt(struct skcipher_request *req)
151 {
152 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
153 struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
154 int err, first, rounds = 6 + ctx->key_length / 4;
155 struct skcipher_walk walk;
156 unsigned int blocks;
157
158 err = skcipher_walk_virt(&walk, req, true);
159
160 kernel_neon_begin();
161 for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) {
162 aes_ecb_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
163 (u8 *)ctx->key_dec, rounds, blocks, first);
164 err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
165 }
166 kernel_neon_end();
167 return err;
168 }
169
170 static int cbc_encrypt(struct skcipher_request *req)
171 {
172 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
173 struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
174 int err, first, rounds = 6 + ctx->key_length / 4;
175 struct skcipher_walk walk;
176 unsigned int blocks;
177
178 err = skcipher_walk_virt(&walk, req, true);
179
180 kernel_neon_begin();
181 for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) {
182 aes_cbc_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
183 (u8 *)ctx->key_enc, rounds, blocks, walk.iv,
184 first);
185 err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
186 }
187 kernel_neon_end();
188 return err;
189 }
190
191 static int cbc_decrypt(struct skcipher_request *req)
192 {
193 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
194 struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
195 int err, first, rounds = 6 + ctx->key_length / 4;
196 struct skcipher_walk walk;
197 unsigned int blocks;
198
199 err = skcipher_walk_virt(&walk, req, true);
200
201 kernel_neon_begin();
202 for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) {
203 aes_cbc_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
204 (u8 *)ctx->key_dec, rounds, blocks, walk.iv,
205 first);
206 err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
207 }
208 kernel_neon_end();
209 return err;
210 }
211
212 static int ctr_encrypt(struct skcipher_request *req)
213 {
214 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
215 struct crypto_aes_ctx *ctx = crypto_skcipher_ctx(tfm);
216 int err, first, rounds = 6 + ctx->key_length / 4;
217 struct skcipher_walk walk;
218 int blocks;
219
220 err = skcipher_walk_virt(&walk, req, true);
221
222 first = 1;
223 kernel_neon_begin();
224 while ((blocks = (walk.nbytes / AES_BLOCK_SIZE))) {
225 aes_ctr_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
226 (u8 *)ctx->key_enc, rounds, blocks, walk.iv,
227 first);
228 err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
229 first = 0;
230 }
231 if (walk.nbytes) {
232 u8 __aligned(8) tail[AES_BLOCK_SIZE];
233 unsigned int nbytes = walk.nbytes;
234 u8 *tdst = walk.dst.virt.addr;
235 u8 *tsrc = walk.src.virt.addr;
236
237 /*
238 * Tell aes_ctr_encrypt() to process a tail block.
239 */
240 blocks = -1;
241
242 aes_ctr_encrypt(tail, NULL, (u8 *)ctx->key_enc, rounds,
243 blocks, walk.iv, first);
244 if (tdst != tsrc)
245 memcpy(tdst, tsrc, nbytes);
246 crypto_xor(tdst, tail, nbytes);
247 err = skcipher_walk_done(&walk, 0);
248 }
249 kernel_neon_end();
250
251 return err;
252 }
253
254 static int xts_encrypt(struct skcipher_request *req)
255 {
256 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
257 struct crypto_aes_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
258 int err, first, rounds = 6 + ctx->key1.key_length / 4;
259 struct skcipher_walk walk;
260 unsigned int blocks;
261
262 err = skcipher_walk_virt(&walk, req, true);
263
264 kernel_neon_begin();
265 for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) {
266 aes_xts_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
267 (u8 *)ctx->key1.key_enc, rounds, blocks,
268 (u8 *)ctx->key2.key_enc, walk.iv, first);
269 err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
270 }
271 kernel_neon_end();
272
273 return err;
274 }
275
276 static int xts_decrypt(struct skcipher_request *req)
277 {
278 struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
279 struct crypto_aes_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
280 int err, first, rounds = 6 + ctx->key1.key_length / 4;
281 struct skcipher_walk walk;
282 unsigned int blocks;
283
284 err = skcipher_walk_virt(&walk, req, true);
285
286 kernel_neon_begin();
287 for (first = 1; (blocks = (walk.nbytes / AES_BLOCK_SIZE)); first = 0) {
288 aes_xts_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
289 (u8 *)ctx->key1.key_dec, rounds, blocks,
290 (u8 *)ctx->key2.key_enc, walk.iv, first);
291 err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
292 }
293 kernel_neon_end();
294
295 return err;
296 }
297
298 static struct skcipher_alg aes_algs[] = { {
299 .base = {
300 .cra_name = "__ecb(aes)",
301 .cra_driver_name = "__ecb-aes-" MODE,
302 .cra_priority = PRIO,
303 .cra_flags = CRYPTO_ALG_INTERNAL,
304 .cra_blocksize = AES_BLOCK_SIZE,
305 .cra_ctxsize = sizeof(struct crypto_aes_ctx),
306 .cra_module = THIS_MODULE,
307 },
308 .min_keysize = AES_MIN_KEY_SIZE,
309 .max_keysize = AES_MAX_KEY_SIZE,
310 .setkey = skcipher_aes_setkey,
311 .encrypt = ecb_encrypt,
312 .decrypt = ecb_decrypt,
313 }, {
314 .base = {
315 .cra_name = "__cbc(aes)",
316 .cra_driver_name = "__cbc-aes-" MODE,
317 .cra_priority = PRIO,
318 .cra_flags = CRYPTO_ALG_INTERNAL,
319 .cra_blocksize = AES_BLOCK_SIZE,
320 .cra_ctxsize = sizeof(struct crypto_aes_ctx),
321 .cra_module = THIS_MODULE,
322 },
323 .min_keysize = AES_MIN_KEY_SIZE,
324 .max_keysize = AES_MAX_KEY_SIZE,
325 .ivsize = AES_BLOCK_SIZE,
326 .setkey = skcipher_aes_setkey,
327 .encrypt = cbc_encrypt,
328 .decrypt = cbc_decrypt,
329 }, {
330 .base = {
331 .cra_name = "__ctr(aes)",
332 .cra_driver_name = "__ctr-aes-" MODE,
333 .cra_priority = PRIO,
334 .cra_flags = CRYPTO_ALG_INTERNAL,
335 .cra_blocksize = 1,
336 .cra_ctxsize = sizeof(struct crypto_aes_ctx),
337 .cra_module = THIS_MODULE,
338 },
339 .min_keysize = AES_MIN_KEY_SIZE,
340 .max_keysize = AES_MAX_KEY_SIZE,
341 .ivsize = AES_BLOCK_SIZE,
342 .chunksize = AES_BLOCK_SIZE,
343 .setkey = skcipher_aes_setkey,
344 .encrypt = ctr_encrypt,
345 .decrypt = ctr_encrypt,
346 }, {
347 .base = {
348 .cra_name = "ctr(aes)",
349 .cra_driver_name = "ctr-aes-" MODE,
350 .cra_priority = PRIO - 1,
351 .cra_blocksize = 1,
352 .cra_ctxsize = sizeof(struct crypto_aes_ctx),
353 .cra_module = THIS_MODULE,
354 },
355 .min_keysize = AES_MIN_KEY_SIZE,
356 .max_keysize = AES_MAX_KEY_SIZE,
357 .ivsize = AES_BLOCK_SIZE,
358 .chunksize = AES_BLOCK_SIZE,
359 .setkey = skcipher_aes_setkey,
360 .encrypt = ctr_encrypt,
361 .decrypt = ctr_encrypt,
362 }, {
363 .base = {
364 .cra_name = "__xts(aes)",
365 .cra_driver_name = "__xts-aes-" MODE,
366 .cra_priority = PRIO,
367 .cra_flags = CRYPTO_ALG_INTERNAL,
368 .cra_blocksize = AES_BLOCK_SIZE,
369 .cra_ctxsize = sizeof(struct crypto_aes_xts_ctx),
370 .cra_module = THIS_MODULE,
371 },
372 .min_keysize = 2 * AES_MIN_KEY_SIZE,
373 .max_keysize = 2 * AES_MAX_KEY_SIZE,
374 .ivsize = AES_BLOCK_SIZE,
375 .setkey = xts_set_key,
376 .encrypt = xts_encrypt,
377 .decrypt = xts_decrypt,
378 } };
379
380 static int cbcmac_setkey(struct crypto_shash *tfm, const u8 *in_key,
381 unsigned int key_len)
382 {
383 struct mac_tfm_ctx *ctx = crypto_shash_ctx(tfm);
384 int err;
385
386 err = aes_expandkey(&ctx->key, in_key, key_len);
387 if (err)
388 crypto_shash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
389
390 return err;
391 }
392
393 static void cmac_gf128_mul_by_x(be128 *y, const be128 *x)
394 {
395 u64 a = be64_to_cpu(x->a);
396 u64 b = be64_to_cpu(x->b);
397
398 y->a = cpu_to_be64((a << 1) | (b >> 63));
399 y->b = cpu_to_be64((b << 1) ^ ((a >> 63) ? 0x87 : 0));
400 }
401
402 static int cmac_setkey(struct crypto_shash *tfm, const u8 *in_key,
403 unsigned int key_len)
404 {
405 struct mac_tfm_ctx *ctx = crypto_shash_ctx(tfm);
406 be128 *consts = (be128 *)ctx->consts;
407 u8 *rk = (u8 *)ctx->key.key_enc;
408 int rounds = 6 + key_len / 4;
409 int err;
410
411 err = cbcmac_setkey(tfm, in_key, key_len);
412 if (err)
413 return err;
414
415 /* encrypt the zero vector */
416 kernel_neon_begin();
417 aes_ecb_encrypt(ctx->consts, (u8[AES_BLOCK_SIZE]){}, rk, rounds, 1, 1);
418 kernel_neon_end();
419
420 cmac_gf128_mul_by_x(consts, consts);
421 cmac_gf128_mul_by_x(consts + 1, consts);
422
423 return 0;
424 }
425
426 static int xcbc_setkey(struct crypto_shash *tfm, const u8 *in_key,
427 unsigned int key_len)
428 {
429 static u8 const ks[3][AES_BLOCK_SIZE] = {
430 { [0 ... AES_BLOCK_SIZE - 1] = 0x1 },
431 { [0 ... AES_BLOCK_SIZE - 1] = 0x2 },
432 { [0 ... AES_BLOCK_SIZE - 1] = 0x3 },
433 };
434
435 struct mac_tfm_ctx *ctx = crypto_shash_ctx(tfm);
436 u8 *rk = (u8 *)ctx->key.key_enc;
437 int rounds = 6 + key_len / 4;
438 u8 key[AES_BLOCK_SIZE];
439 int err;
440
441 err = cbcmac_setkey(tfm, in_key, key_len);
442 if (err)
443 return err;
444
445 kernel_neon_begin();
446 aes_ecb_encrypt(key, ks[0], rk, rounds, 1, 1);
447 aes_ecb_encrypt(ctx->consts, ks[1], rk, rounds, 2, 0);
448 kernel_neon_end();
449
450 return cbcmac_setkey(tfm, key, sizeof(key));
451 }
452
453 static int mac_init(struct shash_desc *desc)
454 {
455 struct mac_desc_ctx *ctx = shash_desc_ctx(desc);
456
457 memset(ctx->dg, 0, AES_BLOCK_SIZE);
458 ctx->len = 0;
459
460 return 0;
461 }
462
463 static int mac_update(struct shash_desc *desc, const u8 *p, unsigned int len)
464 {
465 struct mac_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm);
466 struct mac_desc_ctx *ctx = shash_desc_ctx(desc);
467 int rounds = 6 + tctx->key.key_length / 4;
468
469 while (len > 0) {
470 unsigned int l;
471
472 if ((ctx->len % AES_BLOCK_SIZE) == 0 &&
473 (ctx->len + len) > AES_BLOCK_SIZE) {
474
475 int blocks = len / AES_BLOCK_SIZE;
476
477 len %= AES_BLOCK_SIZE;
478
479 kernel_neon_begin();
480 aes_mac_update(p, tctx->key.key_enc, rounds, blocks,
481 ctx->dg, (ctx->len != 0), (len != 0));
482 kernel_neon_end();
483
484 p += blocks * AES_BLOCK_SIZE;
485
486 if (!len) {
487 ctx->len = AES_BLOCK_SIZE;
488 break;
489 }
490 ctx->len = 0;
491 }
492
493 l = min(len, AES_BLOCK_SIZE - ctx->len);
494
495 if (l <= AES_BLOCK_SIZE) {
496 crypto_xor(ctx->dg + ctx->len, p, l);
497 ctx->len += l;
498 len -= l;
499 p += l;
500 }
501 }
502
503 return 0;
504 }
505
506 static int cbcmac_final(struct shash_desc *desc, u8 *out)
507 {
508 struct mac_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm);
509 struct mac_desc_ctx *ctx = shash_desc_ctx(desc);
510 int rounds = 6 + tctx->key.key_length / 4;
511
512 kernel_neon_begin();
513 aes_mac_update(NULL, tctx->key.key_enc, rounds, 0, ctx->dg, 1, 0);
514 kernel_neon_end();
515
516 memcpy(out, ctx->dg, AES_BLOCK_SIZE);
517
518 return 0;
519 }
520
521 static int cmac_final(struct shash_desc *desc, u8 *out)
522 {
523 struct mac_tfm_ctx *tctx = crypto_shash_ctx(desc->tfm);
524 struct mac_desc_ctx *ctx = shash_desc_ctx(desc);
525 int rounds = 6 + tctx->key.key_length / 4;
526 u8 *consts = tctx->consts;
527
528 if (ctx->len != AES_BLOCK_SIZE) {
529 ctx->dg[ctx->len] ^= 0x80;
530 consts += AES_BLOCK_SIZE;
531 }
532
533 kernel_neon_begin();
534 aes_mac_update(consts, tctx->key.key_enc, rounds, 1, ctx->dg, 0, 1);
535 kernel_neon_end();
536
537 memcpy(out, ctx->dg, AES_BLOCK_SIZE);
538
539 return 0;
540 }
541
542 static struct shash_alg mac_algs[] = { {
543 .base.cra_name = "cmac(aes)",
544 .base.cra_driver_name = "cmac-aes-" MODE,
545 .base.cra_priority = PRIO,
546 .base.cra_flags = CRYPTO_ALG_TYPE_SHASH,
547 .base.cra_blocksize = AES_BLOCK_SIZE,
548 .base.cra_ctxsize = sizeof(struct mac_tfm_ctx) +
549 2 * AES_BLOCK_SIZE,
550 .base.cra_module = THIS_MODULE,
551
552 .digestsize = AES_BLOCK_SIZE,
553 .init = mac_init,
554 .update = mac_update,
555 .final = cmac_final,
556 .setkey = cmac_setkey,
557 .descsize = sizeof(struct mac_desc_ctx),
558 }, {
559 .base.cra_name = "xcbc(aes)",
560 .base.cra_driver_name = "xcbc-aes-" MODE,
561 .base.cra_priority = PRIO,
562 .base.cra_flags = CRYPTO_ALG_TYPE_SHASH,
563 .base.cra_blocksize = AES_BLOCK_SIZE,
564 .base.cra_ctxsize = sizeof(struct mac_tfm_ctx) +
565 2 * AES_BLOCK_SIZE,
566 .base.cra_module = THIS_MODULE,
567
568 .digestsize = AES_BLOCK_SIZE,
569 .init = mac_init,
570 .update = mac_update,
571 .final = cmac_final,
572 .setkey = xcbc_setkey,
573 .descsize = sizeof(struct mac_desc_ctx),
574 }, {
575 .base.cra_name = "cbcmac(aes)",
576 .base.cra_driver_name = "cbcmac-aes-" MODE,
577 .base.cra_priority = PRIO,
578 .base.cra_flags = CRYPTO_ALG_TYPE_SHASH,
579 .base.cra_blocksize = 1,
580 .base.cra_ctxsize = sizeof(struct mac_tfm_ctx),
581 .base.cra_module = THIS_MODULE,
582
583 .digestsize = AES_BLOCK_SIZE,
584 .init = mac_init,
585 .update = mac_update,
586 .final = cbcmac_final,
587 .setkey = cbcmac_setkey,
588 .descsize = sizeof(struct mac_desc_ctx),
589 } };
590
591 static struct simd_skcipher_alg *aes_simd_algs[ARRAY_SIZE(aes_algs)];
592
593 static void aes_exit(void)
594 {
595 int i;
596
597 for (i = 0; i < ARRAY_SIZE(aes_simd_algs); i++)
598 if (aes_simd_algs[i])
599 simd_skcipher_free(aes_simd_algs[i]);
600
601 crypto_unregister_shashes(mac_algs, ARRAY_SIZE(mac_algs));
602 crypto_unregister_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
603 }
604
605 static int __init aes_init(void)
606 {
607 struct simd_skcipher_alg *simd;
608 const char *basename;
609 const char *algname;
610 const char *drvname;
611 int err;
612 int i;
613
614 err = crypto_register_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
615 if (err)
616 return err;
617
618 err = crypto_register_shashes(mac_algs, ARRAY_SIZE(mac_algs));
619 if (err)
620 goto unregister_ciphers;
621
622 for (i = 0; i < ARRAY_SIZE(aes_algs); i++) {
623 if (!(aes_algs[i].base.cra_flags & CRYPTO_ALG_INTERNAL))
624 continue;
625
626 algname = aes_algs[i].base.cra_name + 2;
627 drvname = aes_algs[i].base.cra_driver_name + 2;
628 basename = aes_algs[i].base.cra_driver_name;
629 simd = simd_skcipher_create_compat(algname, drvname, basename);
630 err = PTR_ERR(simd);
631 if (IS_ERR(simd))
632 goto unregister_simds;
633
634 aes_simd_algs[i] = simd;
635 }
636
637 return 0;
638
639 unregister_simds:
640 aes_exit();
641 unregister_ciphers:
642 crypto_unregister_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
643 return err;
644 }
645
646 #ifdef USE_V8_CRYPTO_EXTENSIONS
647 module_cpu_feature_match(AES, aes_init);
648 #else
649 module_init(aes_init);
650 EXPORT_SYMBOL(neon_aes_ecb_encrypt);
651 EXPORT_SYMBOL(neon_aes_cbc_encrypt);
652 #endif
653 module_exit(aes_exit);
Linux with added FPC-III support