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937c30d7 JK |
1 | /* |
2 | * Glue Code for SSE2 assembler versions of Serpent Cipher | |
3 | * | |
4 | * Copyright (c) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | |
5 | * | |
6 | * Glue code based on aesni-intel_glue.c by: | |
7 | * Copyright (C) 2008, Intel Corp. | |
8 | * Author: Huang Ying <ying.huang@intel.com> | |
9 | * | |
10 | * CBC & ECB parts based on code (crypto/cbc.c,ecb.c) by: | |
11 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> | |
12 | * CTR part based on code (crypto/ctr.c) by: | |
13 | * (C) Copyright IBM Corp. 2007 - Joy Latten <latten@us.ibm.com> | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
28 | * USA | |
29 | * | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/hardirq.h> | |
34 | #include <linux/types.h> | |
35 | #include <linux/crypto.h> | |
36 | #include <linux/err.h> | |
37 | #include <crypto/algapi.h> | |
38 | #include <crypto/serpent.h> | |
39 | #include <crypto/cryptd.h> | |
40 | #include <crypto/b128ops.h> | |
41 | #include <crypto/ctr.h> | |
18482053 | 42 | #include <crypto/lrw.h> |
5962f8b6 | 43 | #include <crypto/xts.h> |
937c30d7 JK |
44 | #include <asm/i387.h> |
45 | #include <asm/serpent.h> | |
46 | #include <crypto/scatterwalk.h> | |
47 | #include <linux/workqueue.h> | |
48 | #include <linux/spinlock.h> | |
49 | ||
50 | struct async_serpent_ctx { | |
51 | struct cryptd_ablkcipher *cryptd_tfm; | |
52 | }; | |
53 | ||
54 | static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes) | |
55 | { | |
56 | if (fpu_enabled) | |
57 | return true; | |
58 | ||
59 | /* SSE2 is only used when chunk to be processed is large enough, so | |
60 | * do not enable FPU until it is necessary. | |
61 | */ | |
62 | if (nbytes < SERPENT_BLOCK_SIZE * SERPENT_PARALLEL_BLOCKS) | |
63 | return false; | |
64 | ||
65 | kernel_fpu_begin(); | |
66 | return true; | |
67 | } | |
68 | ||
69 | static inline void serpent_fpu_end(bool fpu_enabled) | |
70 | { | |
71 | if (fpu_enabled) | |
72 | kernel_fpu_end(); | |
73 | } | |
74 | ||
75 | static int ecb_crypt(struct blkcipher_desc *desc, struct blkcipher_walk *walk, | |
76 | bool enc) | |
77 | { | |
78 | bool fpu_enabled = false; | |
79 | struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
80 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
81 | unsigned int nbytes; | |
82 | int err; | |
83 | ||
84 | err = blkcipher_walk_virt(desc, walk); | |
85 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
86 | ||
87 | while ((nbytes = walk->nbytes)) { | |
88 | u8 *wsrc = walk->src.virt.addr; | |
89 | u8 *wdst = walk->dst.virt.addr; | |
90 | ||
91 | fpu_enabled = serpent_fpu_begin(fpu_enabled, nbytes); | |
92 | ||
93 | /* Process multi-block batch */ | |
94 | if (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS) { | |
95 | do { | |
96 | if (enc) | |
97 | serpent_enc_blk_xway(ctx, wdst, wsrc); | |
98 | else | |
99 | serpent_dec_blk_xway(ctx, wdst, wsrc); | |
100 | ||
101 | wsrc += bsize * SERPENT_PARALLEL_BLOCKS; | |
102 | wdst += bsize * SERPENT_PARALLEL_BLOCKS; | |
103 | nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; | |
104 | } while (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS); | |
105 | ||
106 | if (nbytes < bsize) | |
107 | goto done; | |
108 | } | |
109 | ||
110 | /* Handle leftovers */ | |
111 | do { | |
112 | if (enc) | |
113 | __serpent_encrypt(ctx, wdst, wsrc); | |
114 | else | |
115 | __serpent_decrypt(ctx, wdst, wsrc); | |
116 | ||
117 | wsrc += bsize; | |
118 | wdst += bsize; | |
119 | nbytes -= bsize; | |
120 | } while (nbytes >= bsize); | |
121 | ||
122 | done: | |
123 | err = blkcipher_walk_done(desc, walk, nbytes); | |
124 | } | |
125 | ||
126 | serpent_fpu_end(fpu_enabled); | |
127 | return err; | |
128 | } | |
129 | ||
130 | static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
131 | struct scatterlist *src, unsigned int nbytes) | |
132 | { | |
133 | struct blkcipher_walk walk; | |
134 | ||
135 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
136 | return ecb_crypt(desc, &walk, true); | |
137 | } | |
138 | ||
139 | static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
140 | struct scatterlist *src, unsigned int nbytes) | |
141 | { | |
142 | struct blkcipher_walk walk; | |
143 | ||
144 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
145 | return ecb_crypt(desc, &walk, false); | |
146 | } | |
147 | ||
148 | static struct crypto_alg blk_ecb_alg = { | |
149 | .cra_name = "__ecb-serpent-sse2", | |
150 | .cra_driver_name = "__driver-ecb-serpent-sse2", | |
151 | .cra_priority = 0, | |
152 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
153 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
154 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
155 | .cra_alignmask = 0, | |
156 | .cra_type = &crypto_blkcipher_type, | |
157 | .cra_module = THIS_MODULE, | |
158 | .cra_list = LIST_HEAD_INIT(blk_ecb_alg.cra_list), | |
159 | .cra_u = { | |
160 | .blkcipher = { | |
161 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
162 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
163 | .setkey = serpent_setkey, | |
164 | .encrypt = ecb_encrypt, | |
165 | .decrypt = ecb_decrypt, | |
166 | }, | |
167 | }, | |
168 | }; | |
169 | ||
170 | static unsigned int __cbc_encrypt(struct blkcipher_desc *desc, | |
171 | struct blkcipher_walk *walk) | |
172 | { | |
173 | struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
174 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
175 | unsigned int nbytes = walk->nbytes; | |
176 | u128 *src = (u128 *)walk->src.virt.addr; | |
177 | u128 *dst = (u128 *)walk->dst.virt.addr; | |
178 | u128 *iv = (u128 *)walk->iv; | |
179 | ||
180 | do { | |
181 | u128_xor(dst, src, iv); | |
182 | __serpent_encrypt(ctx, (u8 *)dst, (u8 *)dst); | |
183 | iv = dst; | |
184 | ||
185 | src += 1; | |
186 | dst += 1; | |
187 | nbytes -= bsize; | |
188 | } while (nbytes >= bsize); | |
189 | ||
190 | u128_xor((u128 *)walk->iv, (u128 *)walk->iv, iv); | |
191 | return nbytes; | |
192 | } | |
193 | ||
194 | static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
195 | struct scatterlist *src, unsigned int nbytes) | |
196 | { | |
197 | struct blkcipher_walk walk; | |
198 | int err; | |
199 | ||
200 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
201 | err = blkcipher_walk_virt(desc, &walk); | |
202 | ||
203 | while ((nbytes = walk.nbytes)) { | |
204 | nbytes = __cbc_encrypt(desc, &walk); | |
205 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
206 | } | |
207 | ||
208 | return err; | |
209 | } | |
210 | ||
211 | static unsigned int __cbc_decrypt(struct blkcipher_desc *desc, | |
212 | struct blkcipher_walk *walk) | |
213 | { | |
214 | struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
215 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
216 | unsigned int nbytes = walk->nbytes; | |
217 | u128 *src = (u128 *)walk->src.virt.addr; | |
218 | u128 *dst = (u128 *)walk->dst.virt.addr; | |
219 | u128 ivs[SERPENT_PARALLEL_BLOCKS - 1]; | |
220 | u128 last_iv; | |
221 | int i; | |
222 | ||
223 | /* Start of the last block. */ | |
224 | src += nbytes / bsize - 1; | |
225 | dst += nbytes / bsize - 1; | |
226 | ||
227 | last_iv = *src; | |
228 | ||
229 | /* Process multi-block batch */ | |
230 | if (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS) { | |
231 | do { | |
232 | nbytes -= bsize * (SERPENT_PARALLEL_BLOCKS - 1); | |
233 | src -= SERPENT_PARALLEL_BLOCKS - 1; | |
234 | dst -= SERPENT_PARALLEL_BLOCKS - 1; | |
235 | ||
236 | for (i = 0; i < SERPENT_PARALLEL_BLOCKS - 1; i++) | |
237 | ivs[i] = src[i]; | |
238 | ||
239 | serpent_dec_blk_xway(ctx, (u8 *)dst, (u8 *)src); | |
240 | ||
241 | for (i = 0; i < SERPENT_PARALLEL_BLOCKS - 1; i++) | |
242 | u128_xor(dst + (i + 1), dst + (i + 1), ivs + i); | |
243 | ||
244 | nbytes -= bsize; | |
245 | if (nbytes < bsize) | |
246 | goto done; | |
247 | ||
248 | u128_xor(dst, dst, src - 1); | |
249 | src -= 1; | |
250 | dst -= 1; | |
251 | } while (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS); | |
252 | ||
253 | if (nbytes < bsize) | |
254 | goto done; | |
255 | } | |
256 | ||
257 | /* Handle leftovers */ | |
258 | for (;;) { | |
259 | __serpent_decrypt(ctx, (u8 *)dst, (u8 *)src); | |
260 | ||
261 | nbytes -= bsize; | |
262 | if (nbytes < bsize) | |
263 | break; | |
264 | ||
265 | u128_xor(dst, dst, src - 1); | |
266 | src -= 1; | |
267 | dst -= 1; | |
268 | } | |
269 | ||
270 | done: | |
271 | u128_xor(dst, dst, (u128 *)walk->iv); | |
272 | *(u128 *)walk->iv = last_iv; | |
273 | ||
274 | return nbytes; | |
275 | } | |
276 | ||
277 | static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
278 | struct scatterlist *src, unsigned int nbytes) | |
279 | { | |
280 | bool fpu_enabled = false; | |
281 | struct blkcipher_walk walk; | |
282 | int err; | |
283 | ||
284 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
285 | err = blkcipher_walk_virt(desc, &walk); | |
286 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
287 | ||
288 | while ((nbytes = walk.nbytes)) { | |
289 | fpu_enabled = serpent_fpu_begin(fpu_enabled, nbytes); | |
290 | nbytes = __cbc_decrypt(desc, &walk); | |
291 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
292 | } | |
293 | ||
294 | serpent_fpu_end(fpu_enabled); | |
295 | return err; | |
296 | } | |
297 | ||
298 | static struct crypto_alg blk_cbc_alg = { | |
299 | .cra_name = "__cbc-serpent-sse2", | |
300 | .cra_driver_name = "__driver-cbc-serpent-sse2", | |
301 | .cra_priority = 0, | |
302 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
303 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
304 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
305 | .cra_alignmask = 0, | |
306 | .cra_type = &crypto_blkcipher_type, | |
307 | .cra_module = THIS_MODULE, | |
308 | .cra_list = LIST_HEAD_INIT(blk_cbc_alg.cra_list), | |
309 | .cra_u = { | |
310 | .blkcipher = { | |
311 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
312 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
313 | .setkey = serpent_setkey, | |
314 | .encrypt = cbc_encrypt, | |
315 | .decrypt = cbc_decrypt, | |
316 | }, | |
317 | }, | |
318 | }; | |
319 | ||
320 | static inline void u128_to_be128(be128 *dst, const u128 *src) | |
321 | { | |
322 | dst->a = cpu_to_be64(src->a); | |
323 | dst->b = cpu_to_be64(src->b); | |
324 | } | |
325 | ||
326 | static inline void be128_to_u128(u128 *dst, const be128 *src) | |
327 | { | |
328 | dst->a = be64_to_cpu(src->a); | |
329 | dst->b = be64_to_cpu(src->b); | |
330 | } | |
331 | ||
332 | static inline void u128_inc(u128 *i) | |
333 | { | |
334 | i->b++; | |
335 | if (!i->b) | |
336 | i->a++; | |
337 | } | |
338 | ||
339 | static void ctr_crypt_final(struct blkcipher_desc *desc, | |
340 | struct blkcipher_walk *walk) | |
341 | { | |
342 | struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
343 | u8 *ctrblk = walk->iv; | |
344 | u8 keystream[SERPENT_BLOCK_SIZE]; | |
345 | u8 *src = walk->src.virt.addr; | |
346 | u8 *dst = walk->dst.virt.addr; | |
347 | unsigned int nbytes = walk->nbytes; | |
348 | ||
349 | __serpent_encrypt(ctx, keystream, ctrblk); | |
350 | crypto_xor(keystream, src, nbytes); | |
351 | memcpy(dst, keystream, nbytes); | |
352 | ||
353 | crypto_inc(ctrblk, SERPENT_BLOCK_SIZE); | |
354 | } | |
355 | ||
356 | static unsigned int __ctr_crypt(struct blkcipher_desc *desc, | |
357 | struct blkcipher_walk *walk) | |
358 | { | |
359 | struct serpent_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
360 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
361 | unsigned int nbytes = walk->nbytes; | |
362 | u128 *src = (u128 *)walk->src.virt.addr; | |
363 | u128 *dst = (u128 *)walk->dst.virt.addr; | |
364 | u128 ctrblk; | |
365 | be128 ctrblocks[SERPENT_PARALLEL_BLOCKS]; | |
366 | int i; | |
367 | ||
368 | be128_to_u128(&ctrblk, (be128 *)walk->iv); | |
369 | ||
370 | /* Process multi-block batch */ | |
371 | if (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS) { | |
372 | do { | |
373 | /* create ctrblks for parallel encrypt */ | |
374 | for (i = 0; i < SERPENT_PARALLEL_BLOCKS; i++) { | |
375 | if (dst != src) | |
376 | dst[i] = src[i]; | |
377 | ||
378 | u128_to_be128(&ctrblocks[i], &ctrblk); | |
379 | u128_inc(&ctrblk); | |
380 | } | |
381 | ||
382 | serpent_enc_blk_xway_xor(ctx, (u8 *)dst, | |
383 | (u8 *)ctrblocks); | |
384 | ||
385 | src += SERPENT_PARALLEL_BLOCKS; | |
386 | dst += SERPENT_PARALLEL_BLOCKS; | |
387 | nbytes -= bsize * SERPENT_PARALLEL_BLOCKS; | |
388 | } while (nbytes >= bsize * SERPENT_PARALLEL_BLOCKS); | |
389 | ||
390 | if (nbytes < bsize) | |
391 | goto done; | |
392 | } | |
393 | ||
394 | /* Handle leftovers */ | |
395 | do { | |
396 | if (dst != src) | |
397 | *dst = *src; | |
398 | ||
399 | u128_to_be128(&ctrblocks[0], &ctrblk); | |
400 | u128_inc(&ctrblk); | |
401 | ||
402 | __serpent_encrypt(ctx, (u8 *)ctrblocks, (u8 *)ctrblocks); | |
403 | u128_xor(dst, dst, (u128 *)ctrblocks); | |
404 | ||
405 | src += 1; | |
406 | dst += 1; | |
407 | nbytes -= bsize; | |
408 | } while (nbytes >= bsize); | |
409 | ||
410 | done: | |
411 | u128_to_be128((be128 *)walk->iv, &ctrblk); | |
412 | return nbytes; | |
413 | } | |
414 | ||
415 | static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
416 | struct scatterlist *src, unsigned int nbytes) | |
417 | { | |
418 | bool fpu_enabled = false; | |
419 | struct blkcipher_walk walk; | |
420 | int err; | |
421 | ||
422 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
423 | err = blkcipher_walk_virt_block(desc, &walk, SERPENT_BLOCK_SIZE); | |
424 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
425 | ||
426 | while ((nbytes = walk.nbytes) >= SERPENT_BLOCK_SIZE) { | |
427 | fpu_enabled = serpent_fpu_begin(fpu_enabled, nbytes); | |
428 | nbytes = __ctr_crypt(desc, &walk); | |
429 | err = blkcipher_walk_done(desc, &walk, nbytes); | |
430 | } | |
431 | ||
432 | serpent_fpu_end(fpu_enabled); | |
433 | ||
434 | if (walk.nbytes) { | |
435 | ctr_crypt_final(desc, &walk); | |
436 | err = blkcipher_walk_done(desc, &walk, 0); | |
437 | } | |
438 | ||
439 | return err; | |
440 | } | |
441 | ||
442 | static struct crypto_alg blk_ctr_alg = { | |
443 | .cra_name = "__ctr-serpent-sse2", | |
444 | .cra_driver_name = "__driver-ctr-serpent-sse2", | |
445 | .cra_priority = 0, | |
446 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
447 | .cra_blocksize = 1, | |
448 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
449 | .cra_alignmask = 0, | |
450 | .cra_type = &crypto_blkcipher_type, | |
451 | .cra_module = THIS_MODULE, | |
452 | .cra_list = LIST_HEAD_INIT(blk_ctr_alg.cra_list), | |
453 | .cra_u = { | |
454 | .blkcipher = { | |
455 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
456 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
457 | .ivsize = SERPENT_BLOCK_SIZE, | |
458 | .setkey = serpent_setkey, | |
459 | .encrypt = ctr_crypt, | |
460 | .decrypt = ctr_crypt, | |
461 | }, | |
462 | }, | |
463 | }; | |
464 | ||
18482053 JK |
465 | struct crypt_priv { |
466 | struct serpent_ctx *ctx; | |
467 | bool fpu_enabled; | |
468 | }; | |
469 | ||
470 | static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
471 | { | |
472 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
473 | struct crypt_priv *ctx = priv; | |
474 | int i; | |
475 | ||
476 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
477 | ||
478 | if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { | |
479 | serpent_enc_blk_xway(ctx->ctx, srcdst, srcdst); | |
480 | return; | |
481 | } | |
482 | ||
483 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
484 | __serpent_encrypt(ctx->ctx, srcdst, srcdst); | |
485 | } | |
486 | ||
487 | static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
488 | { | |
489 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
490 | struct crypt_priv *ctx = priv; | |
491 | int i; | |
492 | ||
493 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
494 | ||
495 | if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { | |
496 | serpent_dec_blk_xway(ctx->ctx, srcdst, srcdst); | |
497 | return; | |
498 | } | |
499 | ||
500 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
501 | __serpent_decrypt(ctx->ctx, srcdst, srcdst); | |
502 | } | |
503 | ||
504 | struct serpent_lrw_ctx { | |
505 | struct lrw_table_ctx lrw_table; | |
506 | struct serpent_ctx serpent_ctx; | |
507 | }; | |
508 | ||
509 | static int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, | |
510 | unsigned int keylen) | |
511 | { | |
512 | struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
513 | int err; | |
514 | ||
515 | err = __serpent_setkey(&ctx->serpent_ctx, key, keylen - | |
516 | SERPENT_BLOCK_SIZE); | |
517 | if (err) | |
518 | return err; | |
519 | ||
520 | return lrw_init_table(&ctx->lrw_table, key + keylen - | |
521 | SERPENT_BLOCK_SIZE); | |
522 | } | |
523 | ||
524 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
525 | struct scatterlist *src, unsigned int nbytes) | |
526 | { | |
527 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
528 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
529 | struct crypt_priv crypt_ctx = { | |
530 | .ctx = &ctx->serpent_ctx, | |
531 | .fpu_enabled = false, | |
532 | }; | |
533 | struct lrw_crypt_req req = { | |
534 | .tbuf = buf, | |
535 | .tbuflen = sizeof(buf), | |
536 | ||
537 | .table_ctx = &ctx->lrw_table, | |
538 | .crypt_ctx = &crypt_ctx, | |
539 | .crypt_fn = encrypt_callback, | |
540 | }; | |
541 | int ret; | |
542 | ||
d3564338 | 543 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
18482053 JK |
544 | ret = lrw_crypt(desc, dst, src, nbytes, &req); |
545 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
546 | ||
547 | return ret; | |
548 | } | |
549 | ||
550 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
551 | struct scatterlist *src, unsigned int nbytes) | |
552 | { | |
553 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
554 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
555 | struct crypt_priv crypt_ctx = { | |
556 | .ctx = &ctx->serpent_ctx, | |
557 | .fpu_enabled = false, | |
558 | }; | |
559 | struct lrw_crypt_req req = { | |
560 | .tbuf = buf, | |
561 | .tbuflen = sizeof(buf), | |
562 | ||
563 | .table_ctx = &ctx->lrw_table, | |
564 | .crypt_ctx = &crypt_ctx, | |
565 | .crypt_fn = decrypt_callback, | |
566 | }; | |
567 | int ret; | |
568 | ||
d3564338 | 569 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
18482053 JK |
570 | ret = lrw_crypt(desc, dst, src, nbytes, &req); |
571 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
572 | ||
573 | return ret; | |
574 | } | |
575 | ||
576 | static void lrw_exit_tfm(struct crypto_tfm *tfm) | |
577 | { | |
578 | struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
579 | ||
580 | lrw_free_table(&ctx->lrw_table); | |
581 | } | |
582 | ||
583 | static struct crypto_alg blk_lrw_alg = { | |
584 | .cra_name = "__lrw-serpent-sse2", | |
585 | .cra_driver_name = "__driver-lrw-serpent-sse2", | |
586 | .cra_priority = 0, | |
587 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
588 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
589 | .cra_ctxsize = sizeof(struct serpent_lrw_ctx), | |
590 | .cra_alignmask = 0, | |
591 | .cra_type = &crypto_blkcipher_type, | |
592 | .cra_module = THIS_MODULE, | |
593 | .cra_list = LIST_HEAD_INIT(blk_lrw_alg.cra_list), | |
594 | .cra_exit = lrw_exit_tfm, | |
595 | .cra_u = { | |
596 | .blkcipher = { | |
597 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
598 | SERPENT_BLOCK_SIZE, | |
599 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
600 | SERPENT_BLOCK_SIZE, | |
601 | .ivsize = SERPENT_BLOCK_SIZE, | |
602 | .setkey = lrw_serpent_setkey, | |
603 | .encrypt = lrw_encrypt, | |
604 | .decrypt = lrw_decrypt, | |
605 | }, | |
606 | }, | |
607 | }; | |
608 | ||
5962f8b6 JK |
609 | struct serpent_xts_ctx { |
610 | struct serpent_ctx tweak_ctx; | |
611 | struct serpent_ctx crypt_ctx; | |
612 | }; | |
613 | ||
614 | static int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, | |
615 | unsigned int keylen) | |
616 | { | |
617 | struct serpent_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
618 | u32 *flags = &tfm->crt_flags; | |
619 | int err; | |
620 | ||
621 | /* key consists of keys of equal size concatenated, therefore | |
622 | * the length must be even | |
623 | */ | |
624 | if (keylen % 2) { | |
625 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
626 | return -EINVAL; | |
627 | } | |
628 | ||
629 | /* first half of xts-key is for crypt */ | |
630 | err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2); | |
631 | if (err) | |
632 | return err; | |
633 | ||
634 | /* second half of xts-key is for tweak */ | |
635 | return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2); | |
636 | } | |
637 | ||
638 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
639 | struct scatterlist *src, unsigned int nbytes) | |
640 | { | |
641 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
642 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
643 | struct crypt_priv crypt_ctx = { | |
644 | .ctx = &ctx->crypt_ctx, | |
645 | .fpu_enabled = false, | |
646 | }; | |
647 | struct xts_crypt_req req = { | |
648 | .tbuf = buf, | |
649 | .tbuflen = sizeof(buf), | |
650 | ||
651 | .tweak_ctx = &ctx->tweak_ctx, | |
652 | .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt), | |
653 | .crypt_ctx = &crypt_ctx, | |
654 | .crypt_fn = encrypt_callback, | |
655 | }; | |
656 | int ret; | |
657 | ||
d3564338 | 658 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
5962f8b6 JK |
659 | ret = xts_crypt(desc, dst, src, nbytes, &req); |
660 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
661 | ||
662 | return ret; | |
663 | } | |
664 | ||
665 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
666 | struct scatterlist *src, unsigned int nbytes) | |
667 | { | |
668 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
669 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
670 | struct crypt_priv crypt_ctx = { | |
671 | .ctx = &ctx->crypt_ctx, | |
672 | .fpu_enabled = false, | |
673 | }; | |
674 | struct xts_crypt_req req = { | |
675 | .tbuf = buf, | |
676 | .tbuflen = sizeof(buf), | |
677 | ||
678 | .tweak_ctx = &ctx->tweak_ctx, | |
679 | .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt), | |
680 | .crypt_ctx = &crypt_ctx, | |
681 | .crypt_fn = decrypt_callback, | |
682 | }; | |
683 | int ret; | |
684 | ||
d3564338 | 685 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
5962f8b6 JK |
686 | ret = xts_crypt(desc, dst, src, nbytes, &req); |
687 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
688 | ||
689 | return ret; | |
690 | } | |
691 | ||
692 | static struct crypto_alg blk_xts_alg = { | |
693 | .cra_name = "__xts-serpent-sse2", | |
694 | .cra_driver_name = "__driver-xts-serpent-sse2", | |
695 | .cra_priority = 0, | |
696 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
697 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
698 | .cra_ctxsize = sizeof(struct serpent_xts_ctx), | |
699 | .cra_alignmask = 0, | |
700 | .cra_type = &crypto_blkcipher_type, | |
701 | .cra_module = THIS_MODULE, | |
702 | .cra_list = LIST_HEAD_INIT(blk_xts_alg.cra_list), | |
703 | .cra_u = { | |
704 | .blkcipher = { | |
705 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
706 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
707 | .ivsize = SERPENT_BLOCK_SIZE, | |
708 | .setkey = xts_serpent_setkey, | |
709 | .encrypt = xts_encrypt, | |
710 | .decrypt = xts_decrypt, | |
711 | }, | |
712 | }, | |
713 | }; | |
714 | ||
937c30d7 JK |
715 | static int ablk_set_key(struct crypto_ablkcipher *tfm, const u8 *key, |
716 | unsigned int key_len) | |
717 | { | |
718 | struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
719 | struct crypto_ablkcipher *child = &ctx->cryptd_tfm->base; | |
720 | int err; | |
721 | ||
722 | crypto_ablkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); | |
723 | crypto_ablkcipher_set_flags(child, crypto_ablkcipher_get_flags(tfm) | |
724 | & CRYPTO_TFM_REQ_MASK); | |
725 | err = crypto_ablkcipher_setkey(child, key, key_len); | |
726 | crypto_ablkcipher_set_flags(tfm, crypto_ablkcipher_get_flags(child) | |
727 | & CRYPTO_TFM_RES_MASK); | |
728 | return err; | |
729 | } | |
730 | ||
731 | static int __ablk_encrypt(struct ablkcipher_request *req) | |
732 | { | |
733 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); | |
734 | struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
735 | struct blkcipher_desc desc; | |
736 | ||
737 | desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm); | |
738 | desc.info = req->info; | |
739 | desc.flags = 0; | |
740 | ||
741 | return crypto_blkcipher_crt(desc.tfm)->encrypt( | |
742 | &desc, req->dst, req->src, req->nbytes); | |
743 | } | |
744 | ||
745 | static int ablk_encrypt(struct ablkcipher_request *req) | |
746 | { | |
747 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); | |
748 | struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
749 | ||
750 | if (!irq_fpu_usable()) { | |
751 | struct ablkcipher_request *cryptd_req = | |
752 | ablkcipher_request_ctx(req); | |
753 | ||
754 | memcpy(cryptd_req, req, sizeof(*req)); | |
755 | ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
756 | ||
757 | return crypto_ablkcipher_encrypt(cryptd_req); | |
758 | } else { | |
759 | return __ablk_encrypt(req); | |
760 | } | |
761 | } | |
762 | ||
763 | static int ablk_decrypt(struct ablkcipher_request *req) | |
764 | { | |
765 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); | |
766 | struct async_serpent_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
767 | ||
768 | if (!irq_fpu_usable()) { | |
769 | struct ablkcipher_request *cryptd_req = | |
770 | ablkcipher_request_ctx(req); | |
771 | ||
772 | memcpy(cryptd_req, req, sizeof(*req)); | |
773 | ablkcipher_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base); | |
774 | ||
775 | return crypto_ablkcipher_decrypt(cryptd_req); | |
776 | } else { | |
777 | struct blkcipher_desc desc; | |
778 | ||
779 | desc.tfm = cryptd_ablkcipher_child(ctx->cryptd_tfm); | |
780 | desc.info = req->info; | |
781 | desc.flags = 0; | |
782 | ||
783 | return crypto_blkcipher_crt(desc.tfm)->decrypt( | |
784 | &desc, req->dst, req->src, req->nbytes); | |
785 | } | |
786 | } | |
787 | ||
788 | static void ablk_exit(struct crypto_tfm *tfm) | |
789 | { | |
790 | struct async_serpent_ctx *ctx = crypto_tfm_ctx(tfm); | |
791 | ||
792 | cryptd_free_ablkcipher(ctx->cryptd_tfm); | |
793 | } | |
794 | ||
795 | static void ablk_init_common(struct crypto_tfm *tfm, | |
796 | struct cryptd_ablkcipher *cryptd_tfm) | |
797 | { | |
798 | struct async_serpent_ctx *ctx = crypto_tfm_ctx(tfm); | |
799 | ||
800 | ctx->cryptd_tfm = cryptd_tfm; | |
801 | tfm->crt_ablkcipher.reqsize = sizeof(struct ablkcipher_request) + | |
802 | crypto_ablkcipher_reqsize(&cryptd_tfm->base); | |
803 | } | |
804 | ||
805 | static int ablk_ecb_init(struct crypto_tfm *tfm) | |
806 | { | |
807 | struct cryptd_ablkcipher *cryptd_tfm; | |
808 | ||
809 | cryptd_tfm = cryptd_alloc_ablkcipher("__driver-ecb-serpent-sse2", 0, 0); | |
810 | if (IS_ERR(cryptd_tfm)) | |
811 | return PTR_ERR(cryptd_tfm); | |
812 | ablk_init_common(tfm, cryptd_tfm); | |
813 | return 0; | |
814 | } | |
815 | ||
816 | static struct crypto_alg ablk_ecb_alg = { | |
817 | .cra_name = "ecb(serpent)", | |
818 | .cra_driver_name = "ecb-serpent-sse2", | |
819 | .cra_priority = 400, | |
820 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
821 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
822 | .cra_ctxsize = sizeof(struct async_serpent_ctx), | |
823 | .cra_alignmask = 0, | |
824 | .cra_type = &crypto_ablkcipher_type, | |
825 | .cra_module = THIS_MODULE, | |
826 | .cra_list = LIST_HEAD_INIT(ablk_ecb_alg.cra_list), | |
827 | .cra_init = ablk_ecb_init, | |
828 | .cra_exit = ablk_exit, | |
829 | .cra_u = { | |
830 | .ablkcipher = { | |
831 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
832 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
833 | .setkey = ablk_set_key, | |
834 | .encrypt = ablk_encrypt, | |
835 | .decrypt = ablk_decrypt, | |
836 | }, | |
837 | }, | |
838 | }; | |
839 | ||
840 | static int ablk_cbc_init(struct crypto_tfm *tfm) | |
841 | { | |
842 | struct cryptd_ablkcipher *cryptd_tfm; | |
843 | ||
844 | cryptd_tfm = cryptd_alloc_ablkcipher("__driver-cbc-serpent-sse2", 0, 0); | |
845 | if (IS_ERR(cryptd_tfm)) | |
846 | return PTR_ERR(cryptd_tfm); | |
847 | ablk_init_common(tfm, cryptd_tfm); | |
848 | return 0; | |
849 | } | |
850 | ||
851 | static struct crypto_alg ablk_cbc_alg = { | |
852 | .cra_name = "cbc(serpent)", | |
853 | .cra_driver_name = "cbc-serpent-sse2", | |
854 | .cra_priority = 400, | |
855 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
856 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
857 | .cra_ctxsize = sizeof(struct async_serpent_ctx), | |
858 | .cra_alignmask = 0, | |
859 | .cra_type = &crypto_ablkcipher_type, | |
860 | .cra_module = THIS_MODULE, | |
861 | .cra_list = LIST_HEAD_INIT(ablk_cbc_alg.cra_list), | |
862 | .cra_init = ablk_cbc_init, | |
863 | .cra_exit = ablk_exit, | |
864 | .cra_u = { | |
865 | .ablkcipher = { | |
866 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
867 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
868 | .ivsize = SERPENT_BLOCK_SIZE, | |
869 | .setkey = ablk_set_key, | |
870 | .encrypt = __ablk_encrypt, | |
871 | .decrypt = ablk_decrypt, | |
872 | }, | |
873 | }, | |
874 | }; | |
875 | ||
876 | static int ablk_ctr_init(struct crypto_tfm *tfm) | |
877 | { | |
878 | struct cryptd_ablkcipher *cryptd_tfm; | |
879 | ||
880 | cryptd_tfm = cryptd_alloc_ablkcipher("__driver-ctr-serpent-sse2", 0, 0); | |
881 | if (IS_ERR(cryptd_tfm)) | |
882 | return PTR_ERR(cryptd_tfm); | |
883 | ablk_init_common(tfm, cryptd_tfm); | |
884 | return 0; | |
885 | } | |
886 | ||
887 | static struct crypto_alg ablk_ctr_alg = { | |
888 | .cra_name = "ctr(serpent)", | |
889 | .cra_driver_name = "ctr-serpent-sse2", | |
890 | .cra_priority = 400, | |
891 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
892 | .cra_blocksize = 1, | |
893 | .cra_ctxsize = sizeof(struct async_serpent_ctx), | |
894 | .cra_alignmask = 0, | |
895 | .cra_type = &crypto_ablkcipher_type, | |
896 | .cra_module = THIS_MODULE, | |
897 | .cra_list = LIST_HEAD_INIT(ablk_ctr_alg.cra_list), | |
898 | .cra_init = ablk_ctr_init, | |
899 | .cra_exit = ablk_exit, | |
900 | .cra_u = { | |
901 | .ablkcipher = { | |
902 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
903 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
904 | .ivsize = SERPENT_BLOCK_SIZE, | |
905 | .setkey = ablk_set_key, | |
906 | .encrypt = ablk_encrypt, | |
907 | .decrypt = ablk_encrypt, | |
908 | .geniv = "chainiv", | |
909 | }, | |
910 | }, | |
911 | }; | |
912 | ||
18482053 JK |
913 | static int ablk_lrw_init(struct crypto_tfm *tfm) |
914 | { | |
915 | struct cryptd_ablkcipher *cryptd_tfm; | |
916 | ||
917 | cryptd_tfm = cryptd_alloc_ablkcipher("__driver-lrw-serpent-sse2", 0, 0); | |
918 | if (IS_ERR(cryptd_tfm)) | |
919 | return PTR_ERR(cryptd_tfm); | |
920 | ablk_init_common(tfm, cryptd_tfm); | |
921 | return 0; | |
922 | } | |
923 | ||
924 | static struct crypto_alg ablk_lrw_alg = { | |
925 | .cra_name = "lrw(serpent)", | |
926 | .cra_driver_name = "lrw-serpent-sse2", | |
927 | .cra_priority = 400, | |
928 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
929 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
930 | .cra_ctxsize = sizeof(struct async_serpent_ctx), | |
931 | .cra_alignmask = 0, | |
932 | .cra_type = &crypto_ablkcipher_type, | |
933 | .cra_module = THIS_MODULE, | |
934 | .cra_list = LIST_HEAD_INIT(ablk_lrw_alg.cra_list), | |
935 | .cra_init = ablk_lrw_init, | |
936 | .cra_exit = ablk_exit, | |
937 | .cra_u = { | |
938 | .ablkcipher = { | |
939 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
940 | SERPENT_BLOCK_SIZE, | |
941 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
942 | SERPENT_BLOCK_SIZE, | |
943 | .ivsize = SERPENT_BLOCK_SIZE, | |
944 | .setkey = ablk_set_key, | |
945 | .encrypt = ablk_encrypt, | |
946 | .decrypt = ablk_decrypt, | |
947 | }, | |
948 | }, | |
949 | }; | |
950 | ||
5962f8b6 JK |
951 | static int ablk_xts_init(struct crypto_tfm *tfm) |
952 | { | |
953 | struct cryptd_ablkcipher *cryptd_tfm; | |
954 | ||
955 | cryptd_tfm = cryptd_alloc_ablkcipher("__driver-xts-serpent-sse2", 0, 0); | |
956 | if (IS_ERR(cryptd_tfm)) | |
957 | return PTR_ERR(cryptd_tfm); | |
958 | ablk_init_common(tfm, cryptd_tfm); | |
959 | return 0; | |
960 | } | |
961 | ||
962 | static struct crypto_alg ablk_xts_alg = { | |
963 | .cra_name = "xts(serpent)", | |
964 | .cra_driver_name = "xts-serpent-sse2", | |
965 | .cra_priority = 400, | |
966 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
967 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
968 | .cra_ctxsize = sizeof(struct async_serpent_ctx), | |
969 | .cra_alignmask = 0, | |
970 | .cra_type = &crypto_ablkcipher_type, | |
971 | .cra_module = THIS_MODULE, | |
972 | .cra_list = LIST_HEAD_INIT(ablk_xts_alg.cra_list), | |
973 | .cra_init = ablk_xts_init, | |
974 | .cra_exit = ablk_exit, | |
975 | .cra_u = { | |
976 | .ablkcipher = { | |
977 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
978 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
979 | .ivsize = SERPENT_BLOCK_SIZE, | |
980 | .setkey = ablk_set_key, | |
981 | .encrypt = ablk_encrypt, | |
982 | .decrypt = ablk_decrypt, | |
983 | }, | |
984 | }, | |
985 | }; | |
986 | ||
937c30d7 JK |
987 | static int __init serpent_sse2_init(void) |
988 | { | |
989 | int err; | |
990 | ||
991 | if (!cpu_has_xmm2) { | |
992 | printk(KERN_INFO "SSE2 instructions are not detected.\n"); | |
993 | return -ENODEV; | |
994 | } | |
995 | ||
996 | err = crypto_register_alg(&blk_ecb_alg); | |
997 | if (err) | |
998 | goto blk_ecb_err; | |
999 | err = crypto_register_alg(&blk_cbc_alg); | |
1000 | if (err) | |
1001 | goto blk_cbc_err; | |
1002 | err = crypto_register_alg(&blk_ctr_alg); | |
1003 | if (err) | |
1004 | goto blk_ctr_err; | |
1005 | err = crypto_register_alg(&ablk_ecb_alg); | |
1006 | if (err) | |
1007 | goto ablk_ecb_err; | |
1008 | err = crypto_register_alg(&ablk_cbc_alg); | |
1009 | if (err) | |
1010 | goto ablk_cbc_err; | |
1011 | err = crypto_register_alg(&ablk_ctr_alg); | |
1012 | if (err) | |
1013 | goto ablk_ctr_err; | |
18482053 JK |
1014 | err = crypto_register_alg(&blk_lrw_alg); |
1015 | if (err) | |
1016 | goto blk_lrw_err; | |
1017 | err = crypto_register_alg(&ablk_lrw_alg); | |
1018 | if (err) | |
1019 | goto ablk_lrw_err; | |
5962f8b6 JK |
1020 | err = crypto_register_alg(&blk_xts_alg); |
1021 | if (err) | |
1022 | goto blk_xts_err; | |
1023 | err = crypto_register_alg(&ablk_xts_alg); | |
1024 | if (err) | |
1025 | goto ablk_xts_err; | |
937c30d7 JK |
1026 | return err; |
1027 | ||
5962f8b6 JK |
1028 | ablk_xts_err: |
1029 | crypto_unregister_alg(&blk_xts_alg); | |
1030 | blk_xts_err: | |
5962f8b6 | 1031 | crypto_unregister_alg(&ablk_lrw_alg); |
18482053 JK |
1032 | ablk_lrw_err: |
1033 | crypto_unregister_alg(&blk_lrw_alg); | |
1034 | blk_lrw_err: | |
5962f8b6 | 1035 | crypto_unregister_alg(&ablk_ctr_alg); |
937c30d7 JK |
1036 | ablk_ctr_err: |
1037 | crypto_unregister_alg(&ablk_cbc_alg); | |
1038 | ablk_cbc_err: | |
1039 | crypto_unregister_alg(&ablk_ecb_alg); | |
1040 | ablk_ecb_err: | |
1041 | crypto_unregister_alg(&blk_ctr_alg); | |
1042 | blk_ctr_err: | |
1043 | crypto_unregister_alg(&blk_cbc_alg); | |
1044 | blk_cbc_err: | |
1045 | crypto_unregister_alg(&blk_ecb_alg); | |
1046 | blk_ecb_err: | |
1047 | return err; | |
1048 | } | |
1049 | ||
1050 | static void __exit serpent_sse2_exit(void) | |
1051 | { | |
5962f8b6 JK |
1052 | crypto_unregister_alg(&ablk_xts_alg); |
1053 | crypto_unregister_alg(&blk_xts_alg); | |
18482053 JK |
1054 | crypto_unregister_alg(&ablk_lrw_alg); |
1055 | crypto_unregister_alg(&blk_lrw_alg); | |
937c30d7 JK |
1056 | crypto_unregister_alg(&ablk_ctr_alg); |
1057 | crypto_unregister_alg(&ablk_cbc_alg); | |
1058 | crypto_unregister_alg(&ablk_ecb_alg); | |
1059 | crypto_unregister_alg(&blk_ctr_alg); | |
1060 | crypto_unregister_alg(&blk_cbc_alg); | |
1061 | crypto_unregister_alg(&blk_ecb_alg); | |
1062 | } | |
1063 | ||
1064 | module_init(serpent_sse2_init); | |
1065 | module_exit(serpent_sse2_exit); | |
1066 | ||
1067 | MODULE_DESCRIPTION("Serpent Cipher Algorithm, SSE2 optimized"); | |
1068 | MODULE_LICENSE("GPL"); | |
1069 | MODULE_ALIAS("serpent"); |