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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> | |
801201aa | 37 | #include <crypto/ablk_helper.h> |
937c30d7 JK |
38 | #include <crypto/algapi.h> |
39 | #include <crypto/serpent.h> | |
40 | #include <crypto/cryptd.h> | |
41 | #include <crypto/b128ops.h> | |
42 | #include <crypto/ctr.h> | |
18482053 | 43 | #include <crypto/lrw.h> |
5962f8b6 | 44 | #include <crypto/xts.h> |
d4af0e9d | 45 | #include <asm/crypto/serpent-sse2.h> |
596d8750 | 46 | #include <asm/crypto/glue_helper.h> |
937c30d7 | 47 | |
e81792fb JK |
48 | static void serpent_decrypt_cbc_xway(void *ctx, u128 *dst, const u128 *src) |
49 | { | |
50 | u128 ivs[SERPENT_PARALLEL_BLOCKS - 1]; | |
51 | unsigned int j; | |
52 | ||
53 | for (j = 0; j < SERPENT_PARALLEL_BLOCKS - 1; j++) | |
54 | ivs[j] = src[j]; | |
55 | ||
56 | serpent_dec_blk_xway(ctx, (u8 *)dst, (u8 *)src); | |
57 | ||
58 | for (j = 0; j < SERPENT_PARALLEL_BLOCKS - 1; j++) | |
59 | u128_xor(dst + (j + 1), dst + (j + 1), ivs + j); | |
60 | } | |
61 | ||
58990986 | 62 | static void serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv) |
e81792fb JK |
63 | { |
64 | be128 ctrblk; | |
65 | ||
58990986 JK |
66 | le128_to_be128(&ctrblk, iv); |
67 | le128_inc(iv); | |
e81792fb JK |
68 | |
69 | __serpent_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk); | |
70 | u128_xor(dst, src, (u128 *)&ctrblk); | |
71 | } | |
72 | ||
73 | static void serpent_crypt_ctr_xway(void *ctx, u128 *dst, const u128 *src, | |
58990986 | 74 | le128 *iv) |
e81792fb JK |
75 | { |
76 | be128 ctrblks[SERPENT_PARALLEL_BLOCKS]; | |
77 | unsigned int i; | |
78 | ||
79 | for (i = 0; i < SERPENT_PARALLEL_BLOCKS; i++) { | |
80 | if (dst != src) | |
81 | dst[i] = src[i]; | |
82 | ||
58990986 JK |
83 | le128_to_be128(&ctrblks[i], iv); |
84 | le128_inc(iv); | |
e81792fb JK |
85 | } |
86 | ||
87 | serpent_enc_blk_xway_xor(ctx, (u8 *)dst, (u8 *)ctrblks); | |
88 | } | |
89 | ||
90 | static const struct common_glue_ctx serpent_enc = { | |
91 | .num_funcs = 2, | |
92 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
93 | ||
94 | .funcs = { { | |
95 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
96 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_enc_blk_xway) } | |
97 | }, { | |
98 | .num_blocks = 1, | |
99 | .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) } | |
100 | } } | |
101 | }; | |
102 | ||
103 | static const struct common_glue_ctx serpent_ctr = { | |
104 | .num_funcs = 2, | |
105 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
106 | ||
107 | .funcs = { { | |
108 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
109 | .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_crypt_ctr_xway) } | |
110 | }, { | |
111 | .num_blocks = 1, | |
112 | .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_crypt_ctr) } | |
113 | } } | |
114 | }; | |
115 | ||
116 | static const struct common_glue_ctx serpent_dec = { | |
117 | .num_funcs = 2, | |
118 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
119 | ||
120 | .funcs = { { | |
121 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
122 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_dec_blk_xway) } | |
123 | }, { | |
124 | .num_blocks = 1, | |
125 | .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) } | |
126 | } } | |
127 | }; | |
128 | ||
129 | static const struct common_glue_ctx serpent_dec_cbc = { | |
130 | .num_funcs = 2, | |
131 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
132 | ||
133 | .funcs = { { | |
134 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
135 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_decrypt_cbc_xway) } | |
136 | }, { | |
137 | .num_blocks = 1, | |
138 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) } | |
139 | } } | |
140 | }; | |
141 | ||
142 | static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
143 | struct scatterlist *src, unsigned int nbytes) | |
144 | { | |
145 | return glue_ecb_crypt_128bit(&serpent_enc, desc, dst, src, nbytes); | |
146 | } | |
147 | ||
148 | static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
149 | struct scatterlist *src, unsigned int nbytes) | |
150 | { | |
151 | return glue_ecb_crypt_128bit(&serpent_dec, desc, dst, src, nbytes); | |
152 | } | |
153 | ||
154 | static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
155 | struct scatterlist *src, unsigned int nbytes) | |
156 | { | |
157 | return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(__serpent_encrypt), desc, | |
158 | dst, src, nbytes); | |
159 | } | |
160 | ||
161 | static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
162 | struct scatterlist *src, unsigned int nbytes) | |
163 | { | |
164 | return glue_cbc_decrypt_128bit(&serpent_dec_cbc, desc, dst, src, | |
165 | nbytes); | |
166 | } | |
167 | ||
168 | static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
169 | struct scatterlist *src, unsigned int nbytes) | |
170 | { | |
171 | return glue_ctr_crypt_128bit(&serpent_ctr, desc, dst, src, nbytes); | |
172 | } | |
173 | ||
174 | static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes) | |
175 | { | |
176 | return glue_fpu_begin(SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS, | |
177 | NULL, fpu_enabled, nbytes); | |
178 | } | |
179 | ||
180 | static inline void serpent_fpu_end(bool fpu_enabled) | |
181 | { | |
182 | glue_fpu_end(fpu_enabled); | |
183 | } | |
184 | ||
18482053 JK |
185 | struct crypt_priv { |
186 | struct serpent_ctx *ctx; | |
187 | bool fpu_enabled; | |
188 | }; | |
189 | ||
190 | static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
191 | { | |
192 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
193 | struct crypt_priv *ctx = priv; | |
194 | int i; | |
195 | ||
196 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
197 | ||
198 | if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { | |
199 | serpent_enc_blk_xway(ctx->ctx, srcdst, srcdst); | |
200 | return; | |
201 | } | |
202 | ||
203 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
204 | __serpent_encrypt(ctx->ctx, srcdst, srcdst); | |
205 | } | |
206 | ||
207 | static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
208 | { | |
209 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
210 | struct crypt_priv *ctx = priv; | |
211 | int i; | |
212 | ||
213 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
214 | ||
215 | if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { | |
216 | serpent_dec_blk_xway(ctx->ctx, srcdst, srcdst); | |
217 | return; | |
218 | } | |
219 | ||
220 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
221 | __serpent_decrypt(ctx->ctx, srcdst, srcdst); | |
222 | } | |
223 | ||
224 | struct serpent_lrw_ctx { | |
225 | struct lrw_table_ctx lrw_table; | |
226 | struct serpent_ctx serpent_ctx; | |
227 | }; | |
228 | ||
229 | static int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, | |
230 | unsigned int keylen) | |
231 | { | |
232 | struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
233 | int err; | |
234 | ||
235 | err = __serpent_setkey(&ctx->serpent_ctx, key, keylen - | |
236 | SERPENT_BLOCK_SIZE); | |
237 | if (err) | |
238 | return err; | |
239 | ||
240 | return lrw_init_table(&ctx->lrw_table, key + keylen - | |
241 | SERPENT_BLOCK_SIZE); | |
242 | } | |
243 | ||
244 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
245 | struct scatterlist *src, unsigned int nbytes) | |
246 | { | |
247 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
248 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
249 | struct crypt_priv crypt_ctx = { | |
250 | .ctx = &ctx->serpent_ctx, | |
251 | .fpu_enabled = false, | |
252 | }; | |
253 | struct lrw_crypt_req req = { | |
254 | .tbuf = buf, | |
255 | .tbuflen = sizeof(buf), | |
256 | ||
257 | .table_ctx = &ctx->lrw_table, | |
258 | .crypt_ctx = &crypt_ctx, | |
259 | .crypt_fn = encrypt_callback, | |
260 | }; | |
261 | int ret; | |
262 | ||
d3564338 | 263 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
18482053 JK |
264 | ret = lrw_crypt(desc, dst, src, nbytes, &req); |
265 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
266 | ||
267 | return ret; | |
268 | } | |
269 | ||
270 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
271 | struct scatterlist *src, unsigned int nbytes) | |
272 | { | |
273 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
274 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
275 | struct crypt_priv crypt_ctx = { | |
276 | .ctx = &ctx->serpent_ctx, | |
277 | .fpu_enabled = false, | |
278 | }; | |
279 | struct lrw_crypt_req req = { | |
280 | .tbuf = buf, | |
281 | .tbuflen = sizeof(buf), | |
282 | ||
283 | .table_ctx = &ctx->lrw_table, | |
284 | .crypt_ctx = &crypt_ctx, | |
285 | .crypt_fn = decrypt_callback, | |
286 | }; | |
287 | int ret; | |
288 | ||
d3564338 | 289 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
18482053 JK |
290 | ret = lrw_crypt(desc, dst, src, nbytes, &req); |
291 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
292 | ||
293 | return ret; | |
294 | } | |
295 | ||
296 | static void lrw_exit_tfm(struct crypto_tfm *tfm) | |
297 | { | |
298 | struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
299 | ||
300 | lrw_free_table(&ctx->lrw_table); | |
301 | } | |
302 | ||
5962f8b6 JK |
303 | struct serpent_xts_ctx { |
304 | struct serpent_ctx tweak_ctx; | |
305 | struct serpent_ctx crypt_ctx; | |
306 | }; | |
307 | ||
308 | static int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, | |
309 | unsigned int keylen) | |
310 | { | |
311 | struct serpent_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
312 | u32 *flags = &tfm->crt_flags; | |
313 | int err; | |
314 | ||
315 | /* key consists of keys of equal size concatenated, therefore | |
316 | * the length must be even | |
317 | */ | |
318 | if (keylen % 2) { | |
319 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
320 | return -EINVAL; | |
321 | } | |
322 | ||
323 | /* first half of xts-key is for crypt */ | |
324 | err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2); | |
325 | if (err) | |
326 | return err; | |
327 | ||
328 | /* second half of xts-key is for tweak */ | |
329 | return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2); | |
330 | } | |
331 | ||
332 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
333 | struct scatterlist *src, unsigned int nbytes) | |
334 | { | |
335 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
336 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
337 | struct crypt_priv crypt_ctx = { | |
338 | .ctx = &ctx->crypt_ctx, | |
339 | .fpu_enabled = false, | |
340 | }; | |
341 | struct xts_crypt_req req = { | |
342 | .tbuf = buf, | |
343 | .tbuflen = sizeof(buf), | |
344 | ||
345 | .tweak_ctx = &ctx->tweak_ctx, | |
346 | .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt), | |
347 | .crypt_ctx = &crypt_ctx, | |
348 | .crypt_fn = encrypt_callback, | |
349 | }; | |
350 | int ret; | |
351 | ||
d3564338 | 352 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
5962f8b6 JK |
353 | ret = xts_crypt(desc, dst, src, nbytes, &req); |
354 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
355 | ||
356 | return ret; | |
357 | } | |
358 | ||
359 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
360 | struct scatterlist *src, unsigned int nbytes) | |
361 | { | |
362 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
363 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
364 | struct crypt_priv crypt_ctx = { | |
365 | .ctx = &ctx->crypt_ctx, | |
366 | .fpu_enabled = false, | |
367 | }; | |
368 | struct xts_crypt_req req = { | |
369 | .tbuf = buf, | |
370 | .tbuflen = sizeof(buf), | |
371 | ||
372 | .tweak_ctx = &ctx->tweak_ctx, | |
373 | .tweak_fn = XTS_TWEAK_CAST(__serpent_encrypt), | |
374 | .crypt_ctx = &crypt_ctx, | |
375 | .crypt_fn = decrypt_callback, | |
376 | }; | |
377 | int ret; | |
378 | ||
d3564338 | 379 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; |
5962f8b6 JK |
380 | ret = xts_crypt(desc, dst, src, nbytes, &req); |
381 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
382 | ||
383 | return ret; | |
384 | } | |
385 | ||
35474c3b JK |
386 | static struct crypto_alg serpent_algs[10] = { { |
387 | .cra_name = "__ecb-serpent-sse2", | |
388 | .cra_driver_name = "__driver-ecb-serpent-sse2", | |
389 | .cra_priority = 0, | |
748be1f1 SM |
390 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
391 | CRYPTO_ALG_INTERNAL, | |
35474c3b JK |
392 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
393 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
394 | .cra_alignmask = 0, | |
395 | .cra_type = &crypto_blkcipher_type, | |
396 | .cra_module = THIS_MODULE, | |
35474c3b JK |
397 | .cra_u = { |
398 | .blkcipher = { | |
399 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
400 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
401 | .setkey = serpent_setkey, | |
402 | .encrypt = ecb_encrypt, | |
403 | .decrypt = ecb_decrypt, | |
404 | }, | |
405 | }, | |
406 | }, { | |
407 | .cra_name = "__cbc-serpent-sse2", | |
408 | .cra_driver_name = "__driver-cbc-serpent-sse2", | |
409 | .cra_priority = 0, | |
748be1f1 SM |
410 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
411 | CRYPTO_ALG_INTERNAL, | |
35474c3b JK |
412 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
413 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
414 | .cra_alignmask = 0, | |
415 | .cra_type = &crypto_blkcipher_type, | |
416 | .cra_module = THIS_MODULE, | |
35474c3b JK |
417 | .cra_u = { |
418 | .blkcipher = { | |
419 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
420 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
421 | .setkey = serpent_setkey, | |
422 | .encrypt = cbc_encrypt, | |
423 | .decrypt = cbc_decrypt, | |
424 | }, | |
425 | }, | |
426 | }, { | |
427 | .cra_name = "__ctr-serpent-sse2", | |
428 | .cra_driver_name = "__driver-ctr-serpent-sse2", | |
429 | .cra_priority = 0, | |
748be1f1 SM |
430 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
431 | CRYPTO_ALG_INTERNAL, | |
35474c3b JK |
432 | .cra_blocksize = 1, |
433 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
434 | .cra_alignmask = 0, | |
435 | .cra_type = &crypto_blkcipher_type, | |
436 | .cra_module = THIS_MODULE, | |
35474c3b JK |
437 | .cra_u = { |
438 | .blkcipher = { | |
439 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
440 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
441 | .ivsize = SERPENT_BLOCK_SIZE, | |
442 | .setkey = serpent_setkey, | |
443 | .encrypt = ctr_crypt, | |
444 | .decrypt = ctr_crypt, | |
445 | }, | |
446 | }, | |
447 | }, { | |
448 | .cra_name = "__lrw-serpent-sse2", | |
449 | .cra_driver_name = "__driver-lrw-serpent-sse2", | |
450 | .cra_priority = 0, | |
748be1f1 SM |
451 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
452 | CRYPTO_ALG_INTERNAL, | |
35474c3b JK |
453 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
454 | .cra_ctxsize = sizeof(struct serpent_lrw_ctx), | |
455 | .cra_alignmask = 0, | |
456 | .cra_type = &crypto_blkcipher_type, | |
457 | .cra_module = THIS_MODULE, | |
35474c3b JK |
458 | .cra_exit = lrw_exit_tfm, |
459 | .cra_u = { | |
460 | .blkcipher = { | |
461 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
462 | SERPENT_BLOCK_SIZE, | |
463 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
464 | SERPENT_BLOCK_SIZE, | |
465 | .ivsize = SERPENT_BLOCK_SIZE, | |
466 | .setkey = lrw_serpent_setkey, | |
467 | .encrypt = lrw_encrypt, | |
468 | .decrypt = lrw_decrypt, | |
469 | }, | |
470 | }, | |
471 | }, { | |
472 | .cra_name = "__xts-serpent-sse2", | |
473 | .cra_driver_name = "__driver-xts-serpent-sse2", | |
474 | .cra_priority = 0, | |
748be1f1 SM |
475 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
476 | CRYPTO_ALG_INTERNAL, | |
35474c3b JK |
477 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
478 | .cra_ctxsize = sizeof(struct serpent_xts_ctx), | |
479 | .cra_alignmask = 0, | |
480 | .cra_type = &crypto_blkcipher_type, | |
481 | .cra_module = THIS_MODULE, | |
35474c3b JK |
482 | .cra_u = { |
483 | .blkcipher = { | |
484 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
485 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
486 | .ivsize = SERPENT_BLOCK_SIZE, | |
487 | .setkey = xts_serpent_setkey, | |
488 | .encrypt = xts_encrypt, | |
489 | .decrypt = xts_decrypt, | |
490 | }, | |
491 | }, | |
492 | }, { | |
937c30d7 JK |
493 | .cra_name = "ecb(serpent)", |
494 | .cra_driver_name = "ecb-serpent-sse2", | |
495 | .cra_priority = 400, | |
496 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
497 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 498 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
937c30d7 JK |
499 | .cra_alignmask = 0, |
500 | .cra_type = &crypto_ablkcipher_type, | |
501 | .cra_module = THIS_MODULE, | |
435d3e51 | 502 | .cra_init = ablk_init, |
937c30d7 JK |
503 | .cra_exit = ablk_exit, |
504 | .cra_u = { | |
505 | .ablkcipher = { | |
506 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
507 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
508 | .setkey = ablk_set_key, | |
509 | .encrypt = ablk_encrypt, | |
510 | .decrypt = ablk_decrypt, | |
511 | }, | |
512 | }, | |
35474c3b | 513 | }, { |
937c30d7 JK |
514 | .cra_name = "cbc(serpent)", |
515 | .cra_driver_name = "cbc-serpent-sse2", | |
516 | .cra_priority = 400, | |
517 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
518 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 519 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
937c30d7 JK |
520 | .cra_alignmask = 0, |
521 | .cra_type = &crypto_ablkcipher_type, | |
522 | .cra_module = THIS_MODULE, | |
435d3e51 | 523 | .cra_init = ablk_init, |
937c30d7 JK |
524 | .cra_exit = ablk_exit, |
525 | .cra_u = { | |
526 | .ablkcipher = { | |
527 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
528 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
529 | .ivsize = SERPENT_BLOCK_SIZE, | |
530 | .setkey = ablk_set_key, | |
531 | .encrypt = __ablk_encrypt, | |
532 | .decrypt = ablk_decrypt, | |
533 | }, | |
534 | }, | |
35474c3b | 535 | }, { |
937c30d7 JK |
536 | .cra_name = "ctr(serpent)", |
537 | .cra_driver_name = "ctr-serpent-sse2", | |
538 | .cra_priority = 400, | |
539 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
540 | .cra_blocksize = 1, | |
ffaf9156 | 541 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
937c30d7 JK |
542 | .cra_alignmask = 0, |
543 | .cra_type = &crypto_ablkcipher_type, | |
544 | .cra_module = THIS_MODULE, | |
435d3e51 | 545 | .cra_init = ablk_init, |
937c30d7 JK |
546 | .cra_exit = ablk_exit, |
547 | .cra_u = { | |
548 | .ablkcipher = { | |
549 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
550 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
551 | .ivsize = SERPENT_BLOCK_SIZE, | |
552 | .setkey = ablk_set_key, | |
553 | .encrypt = ablk_encrypt, | |
554 | .decrypt = ablk_encrypt, | |
555 | .geniv = "chainiv", | |
556 | }, | |
557 | }, | |
35474c3b | 558 | }, { |
18482053 JK |
559 | .cra_name = "lrw(serpent)", |
560 | .cra_driver_name = "lrw-serpent-sse2", | |
561 | .cra_priority = 400, | |
562 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
563 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 564 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
18482053 JK |
565 | .cra_alignmask = 0, |
566 | .cra_type = &crypto_ablkcipher_type, | |
567 | .cra_module = THIS_MODULE, | |
435d3e51 | 568 | .cra_init = ablk_init, |
18482053 JK |
569 | .cra_exit = ablk_exit, |
570 | .cra_u = { | |
571 | .ablkcipher = { | |
572 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
573 | SERPENT_BLOCK_SIZE, | |
574 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
575 | SERPENT_BLOCK_SIZE, | |
576 | .ivsize = SERPENT_BLOCK_SIZE, | |
577 | .setkey = ablk_set_key, | |
578 | .encrypt = ablk_encrypt, | |
579 | .decrypt = ablk_decrypt, | |
580 | }, | |
581 | }, | |
35474c3b | 582 | }, { |
5962f8b6 JK |
583 | .cra_name = "xts(serpent)", |
584 | .cra_driver_name = "xts-serpent-sse2", | |
585 | .cra_priority = 400, | |
586 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
587 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 588 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
5962f8b6 JK |
589 | .cra_alignmask = 0, |
590 | .cra_type = &crypto_ablkcipher_type, | |
591 | .cra_module = THIS_MODULE, | |
435d3e51 | 592 | .cra_init = ablk_init, |
5962f8b6 JK |
593 | .cra_exit = ablk_exit, |
594 | .cra_u = { | |
595 | .ablkcipher = { | |
596 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
597 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
598 | .ivsize = SERPENT_BLOCK_SIZE, | |
599 | .setkey = ablk_set_key, | |
600 | .encrypt = ablk_encrypt, | |
601 | .decrypt = ablk_decrypt, | |
602 | }, | |
603 | }, | |
35474c3b | 604 | } }; |
5962f8b6 | 605 | |
937c30d7 JK |
606 | static int __init serpent_sse2_init(void) |
607 | { | |
937c30d7 JK |
608 | if (!cpu_has_xmm2) { |
609 | printk(KERN_INFO "SSE2 instructions are not detected.\n"); | |
610 | return -ENODEV; | |
611 | } | |
612 | ||
35474c3b | 613 | return crypto_register_algs(serpent_algs, ARRAY_SIZE(serpent_algs)); |
937c30d7 JK |
614 | } |
615 | ||
616 | static void __exit serpent_sse2_exit(void) | |
617 | { | |
35474c3b | 618 | crypto_unregister_algs(serpent_algs, ARRAY_SIZE(serpent_algs)); |
937c30d7 JK |
619 | } |
620 | ||
621 | module_init(serpent_sse2_init); | |
622 | module_exit(serpent_sse2_exit); | |
623 | ||
624 | MODULE_DESCRIPTION("Serpent Cipher Algorithm, SSE2 optimized"); | |
625 | MODULE_LICENSE("GPL"); | |
5d26a105 | 626 | MODULE_ALIAS_CRYPTO("serpent"); |