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7efe4076 JG |
1 | /* |
2 | * Glue Code for AVX assembler versions of Serpent Cipher | |
3 | * | |
4 | * Copyright (C) 2012 Johannes Goetzfried | |
5 | * <Johannes.Goetzfried@informatik.stud.uni-erlangen.de> | |
6 | * | |
a05248ed | 7 | * Copyright © 2011-2013 Jussi Kivilinna <jussi.kivilinna@iki.fi> |
7efe4076 JG |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/hardirq.h> | |
28 | #include <linux/types.h> | |
29 | #include <linux/crypto.h> | |
30 | #include <linux/err.h> | |
801201aa | 31 | #include <crypto/ablk_helper.h> |
7efe4076 JG |
32 | #include <crypto/algapi.h> |
33 | #include <crypto/serpent.h> | |
34 | #include <crypto/cryptd.h> | |
35 | #include <crypto/b128ops.h> | |
36 | #include <crypto/ctr.h> | |
37 | #include <crypto/lrw.h> | |
38 | #include <crypto/xts.h> | |
c1c23f7e | 39 | #include <asm/fpu/api.h> |
d4af0e9d | 40 | #include <asm/crypto/serpent-avx.h> |
1d0debbd | 41 | #include <asm/crypto/glue_helper.h> |
7efe4076 | 42 | |
56d76c96 JK |
43 | /* 8-way parallel cipher functions */ |
44 | asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst, | |
45 | const u8 *src); | |
46 | EXPORT_SYMBOL_GPL(serpent_ecb_enc_8way_avx); | |
47 | ||
48 | asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, | |
49 | const u8 *src); | |
50 | EXPORT_SYMBOL_GPL(serpent_ecb_dec_8way_avx); | |
51 | ||
52 | asmlinkage void serpent_cbc_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, | |
53 | const u8 *src); | |
54 | EXPORT_SYMBOL_GPL(serpent_cbc_dec_8way_avx); | |
55 | ||
56 | asmlinkage void serpent_ctr_8way_avx(struct serpent_ctx *ctx, u8 *dst, | |
57 | const u8 *src, le128 *iv); | |
58 | EXPORT_SYMBOL_GPL(serpent_ctr_8way_avx); | |
59 | ||
60 | asmlinkage void serpent_xts_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst, | |
61 | const u8 *src, le128 *iv); | |
62 | EXPORT_SYMBOL_GPL(serpent_xts_enc_8way_avx); | |
63 | ||
64 | asmlinkage void serpent_xts_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst, | |
65 | const u8 *src, le128 *iv); | |
66 | EXPORT_SYMBOL_GPL(serpent_xts_dec_8way_avx); | |
67 | ||
68 | void __serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
7efe4076 | 69 | { |
1d0debbd | 70 | be128 ctrblk; |
7efe4076 | 71 | |
58990986 JK |
72 | le128_to_be128(&ctrblk, iv); |
73 | le128_inc(iv); | |
7efe4076 | 74 | |
1d0debbd JK |
75 | __serpent_encrypt(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk); |
76 | u128_xor(dst, src, (u128 *)&ctrblk); | |
7efe4076 | 77 | } |
56d76c96 | 78 | EXPORT_SYMBOL_GPL(__serpent_crypt_ctr); |
7efe4076 | 79 | |
56d76c96 | 80 | void serpent_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) |
a05248ed JK |
81 | { |
82 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, | |
83 | GLUE_FUNC_CAST(__serpent_encrypt)); | |
84 | } | |
56d76c96 | 85 | EXPORT_SYMBOL_GPL(serpent_xts_enc); |
a05248ed | 86 | |
56d76c96 | 87 | void serpent_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) |
a05248ed JK |
88 | { |
89 | glue_xts_crypt_128bit_one(ctx, dst, src, iv, | |
90 | GLUE_FUNC_CAST(__serpent_decrypt)); | |
91 | } | |
56d76c96 JK |
92 | EXPORT_SYMBOL_GPL(serpent_xts_dec); |
93 | ||
a05248ed | 94 | |
1d0debbd JK |
95 | static const struct common_glue_ctx serpent_enc = { |
96 | .num_funcs = 2, | |
97 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
7efe4076 | 98 | |
1d0debbd JK |
99 | .funcs = { { |
100 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
facd416f | 101 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_8way_avx) } |
1d0debbd JK |
102 | }, { |
103 | .num_blocks = 1, | |
104 | .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) } | |
105 | } } | |
106 | }; | |
7efe4076 | 107 | |
1d0debbd JK |
108 | static const struct common_glue_ctx serpent_ctr = { |
109 | .num_funcs = 2, | |
110 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
111 | ||
112 | .funcs = { { | |
113 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
facd416f | 114 | .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) } |
1d0debbd JK |
115 | }, { |
116 | .num_blocks = 1, | |
56d76c96 | 117 | .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) } |
1d0debbd JK |
118 | } } |
119 | }; | |
7efe4076 | 120 | |
a05248ed JK |
121 | static const struct common_glue_ctx serpent_enc_xts = { |
122 | .num_funcs = 2, | |
123 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
124 | ||
125 | .funcs = { { | |
126 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
127 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) } | |
128 | }, { | |
129 | .num_blocks = 1, | |
130 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) } | |
131 | } } | |
132 | }; | |
133 | ||
1d0debbd JK |
134 | static const struct common_glue_ctx serpent_dec = { |
135 | .num_funcs = 2, | |
136 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
137 | ||
138 | .funcs = { { | |
139 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
facd416f | 140 | .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_8way_avx) } |
1d0debbd JK |
141 | }, { |
142 | .num_blocks = 1, | |
143 | .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) } | |
144 | } } | |
145 | }; | |
7efe4076 | 146 | |
1d0debbd JK |
147 | static const struct common_glue_ctx serpent_dec_cbc = { |
148 | .num_funcs = 2, | |
149 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
150 | ||
151 | .funcs = { { | |
152 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
facd416f | 153 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_8way_avx) } |
1d0debbd JK |
154 | }, { |
155 | .num_blocks = 1, | |
156 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) } | |
157 | } } | |
158 | }; | |
7efe4076 | 159 | |
a05248ed JK |
160 | static const struct common_glue_ctx serpent_dec_xts = { |
161 | .num_funcs = 2, | |
162 | .fpu_blocks_limit = SERPENT_PARALLEL_BLOCKS, | |
163 | ||
164 | .funcs = { { | |
165 | .num_blocks = SERPENT_PARALLEL_BLOCKS, | |
166 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) } | |
167 | }, { | |
168 | .num_blocks = 1, | |
169 | .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) } | |
170 | } } | |
171 | }; | |
172 | ||
1d0debbd | 173 | static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
7efe4076 JG |
174 | struct scatterlist *src, unsigned int nbytes) |
175 | { | |
1d0debbd | 176 | return glue_ecb_crypt_128bit(&serpent_enc, desc, dst, src, nbytes); |
7efe4076 JG |
177 | } |
178 | ||
1d0debbd JK |
179 | static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
180 | struct scatterlist *src, unsigned int nbytes) | |
7efe4076 | 181 | { |
1d0debbd | 182 | return glue_ecb_crypt_128bit(&serpent_dec, desc, dst, src, nbytes); |
7efe4076 JG |
183 | } |
184 | ||
1d0debbd JK |
185 | static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
186 | struct scatterlist *src, unsigned int nbytes) | |
7efe4076 | 187 | { |
1d0debbd JK |
188 | return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(__serpent_encrypt), desc, |
189 | dst, src, nbytes); | |
7efe4076 JG |
190 | } |
191 | ||
1d0debbd JK |
192 | static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
193 | struct scatterlist *src, unsigned int nbytes) | |
7efe4076 | 194 | { |
1d0debbd JK |
195 | return glue_cbc_decrypt_128bit(&serpent_dec_cbc, desc, dst, src, |
196 | nbytes); | |
7efe4076 JG |
197 | } |
198 | ||
1d0debbd JK |
199 | static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
200 | struct scatterlist *src, unsigned int nbytes) | |
7efe4076 | 201 | { |
1d0debbd | 202 | return glue_ctr_crypt_128bit(&serpent_ctr, desc, dst, src, nbytes); |
7efe4076 JG |
203 | } |
204 | ||
1d0debbd | 205 | static inline bool serpent_fpu_begin(bool fpu_enabled, unsigned int nbytes) |
7efe4076 | 206 | { |
1d0debbd JK |
207 | return glue_fpu_begin(SERPENT_BLOCK_SIZE, SERPENT_PARALLEL_BLOCKS, |
208 | NULL, fpu_enabled, nbytes); | |
7efe4076 JG |
209 | } |
210 | ||
1d0debbd | 211 | static inline void serpent_fpu_end(bool fpu_enabled) |
7efe4076 | 212 | { |
1d0debbd | 213 | glue_fpu_end(fpu_enabled); |
7efe4076 JG |
214 | } |
215 | ||
216 | struct crypt_priv { | |
217 | struct serpent_ctx *ctx; | |
218 | bool fpu_enabled; | |
219 | }; | |
220 | ||
221 | static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
222 | { | |
223 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
224 | struct crypt_priv *ctx = priv; | |
225 | int i; | |
226 | ||
227 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
228 | ||
229 | if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { | |
facd416f | 230 | serpent_ecb_enc_8way_avx(ctx->ctx, srcdst, srcdst); |
7efe4076 JG |
231 | return; |
232 | } | |
233 | ||
234 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
235 | __serpent_encrypt(ctx->ctx, srcdst, srcdst); | |
236 | } | |
237 | ||
238 | static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
239 | { | |
240 | const unsigned int bsize = SERPENT_BLOCK_SIZE; | |
241 | struct crypt_priv *ctx = priv; | |
242 | int i; | |
243 | ||
244 | ctx->fpu_enabled = serpent_fpu_begin(ctx->fpu_enabled, nbytes); | |
245 | ||
246 | if (nbytes == bsize * SERPENT_PARALLEL_BLOCKS) { | |
facd416f | 247 | serpent_ecb_dec_8way_avx(ctx->ctx, srcdst, srcdst); |
7efe4076 JG |
248 | return; |
249 | } | |
250 | ||
251 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
252 | __serpent_decrypt(ctx->ctx, srcdst, srcdst); | |
253 | } | |
254 | ||
56d76c96 JK |
255 | int lrw_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, |
256 | unsigned int keylen) | |
7efe4076 JG |
257 | { |
258 | struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
259 | int err; | |
260 | ||
261 | err = __serpent_setkey(&ctx->serpent_ctx, key, keylen - | |
262 | SERPENT_BLOCK_SIZE); | |
263 | if (err) | |
264 | return err; | |
265 | ||
266 | return lrw_init_table(&ctx->lrw_table, key + keylen - | |
267 | SERPENT_BLOCK_SIZE); | |
268 | } | |
56d76c96 | 269 | EXPORT_SYMBOL_GPL(lrw_serpent_setkey); |
7efe4076 JG |
270 | |
271 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
272 | struct scatterlist *src, unsigned int nbytes) | |
273 | { | |
274 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
275 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
276 | struct crypt_priv crypt_ctx = { | |
277 | .ctx = &ctx->serpent_ctx, | |
278 | .fpu_enabled = false, | |
279 | }; | |
280 | struct lrw_crypt_req req = { | |
281 | .tbuf = buf, | |
282 | .tbuflen = sizeof(buf), | |
283 | ||
284 | .table_ctx = &ctx->lrw_table, | |
285 | .crypt_ctx = &crypt_ctx, | |
286 | .crypt_fn = encrypt_callback, | |
287 | }; | |
288 | int ret; | |
289 | ||
290 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
291 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
292 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
293 | ||
294 | return ret; | |
295 | } | |
296 | ||
297 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
298 | struct scatterlist *src, unsigned int nbytes) | |
299 | { | |
300 | struct serpent_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
301 | be128 buf[SERPENT_PARALLEL_BLOCKS]; | |
302 | struct crypt_priv crypt_ctx = { | |
303 | .ctx = &ctx->serpent_ctx, | |
304 | .fpu_enabled = false, | |
305 | }; | |
306 | struct lrw_crypt_req req = { | |
307 | .tbuf = buf, | |
308 | .tbuflen = sizeof(buf), | |
309 | ||
310 | .table_ctx = &ctx->lrw_table, | |
311 | .crypt_ctx = &crypt_ctx, | |
312 | .crypt_fn = decrypt_callback, | |
313 | }; | |
314 | int ret; | |
315 | ||
316 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
317 | ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
318 | serpent_fpu_end(crypt_ctx.fpu_enabled); | |
319 | ||
320 | return ret; | |
321 | } | |
322 | ||
56d76c96 | 323 | void lrw_serpent_exit_tfm(struct crypto_tfm *tfm) |
7efe4076 JG |
324 | { |
325 | struct serpent_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
326 | ||
327 | lrw_free_table(&ctx->lrw_table); | |
328 | } | |
56d76c96 | 329 | EXPORT_SYMBOL_GPL(lrw_serpent_exit_tfm); |
7efe4076 | 330 | |
56d76c96 JK |
331 | int xts_serpent_setkey(struct crypto_tfm *tfm, const u8 *key, |
332 | unsigned int keylen) | |
7efe4076 JG |
333 | { |
334 | struct serpent_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
7efe4076 JG |
335 | int err; |
336 | ||
28856a9e SM |
337 | err = xts_check_key(tfm, key, keylen); |
338 | if (err) | |
339 | return err; | |
7efe4076 JG |
340 | |
341 | /* first half of xts-key is for crypt */ | |
342 | err = __serpent_setkey(&ctx->crypt_ctx, key, keylen / 2); | |
343 | if (err) | |
344 | return err; | |
345 | ||
346 | /* second half of xts-key is for tweak */ | |
347 | return __serpent_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2); | |
348 | } | |
56d76c96 | 349 | EXPORT_SYMBOL_GPL(xts_serpent_setkey); |
7efe4076 JG |
350 | |
351 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
352 | struct scatterlist *src, unsigned int nbytes) | |
353 | { | |
354 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
7efe4076 | 355 | |
a05248ed JK |
356 | return glue_xts_crypt_128bit(&serpent_enc_xts, desc, dst, src, nbytes, |
357 | XTS_TWEAK_CAST(__serpent_encrypt), | |
358 | &ctx->tweak_ctx, &ctx->crypt_ctx); | |
7efe4076 JG |
359 | } |
360 | ||
361 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
362 | struct scatterlist *src, unsigned int nbytes) | |
363 | { | |
364 | struct serpent_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
7efe4076 | 365 | |
a05248ed JK |
366 | return glue_xts_crypt_128bit(&serpent_dec_xts, desc, dst, src, nbytes, |
367 | XTS_TWEAK_CAST(__serpent_encrypt), | |
368 | &ctx->tweak_ctx, &ctx->crypt_ctx); | |
7efe4076 JG |
369 | } |
370 | ||
7efe4076 JG |
371 | static struct crypto_alg serpent_algs[10] = { { |
372 | .cra_name = "__ecb-serpent-avx", | |
373 | .cra_driver_name = "__driver-ecb-serpent-avx", | |
374 | .cra_priority = 0, | |
65aed539 SM |
375 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
376 | CRYPTO_ALG_INTERNAL, | |
7efe4076 JG |
377 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
378 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
379 | .cra_alignmask = 0, | |
380 | .cra_type = &crypto_blkcipher_type, | |
381 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
382 | .cra_u = { |
383 | .blkcipher = { | |
384 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
385 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
386 | .setkey = serpent_setkey, | |
387 | .encrypt = ecb_encrypt, | |
388 | .decrypt = ecb_decrypt, | |
389 | }, | |
390 | }, | |
391 | }, { | |
392 | .cra_name = "__cbc-serpent-avx", | |
393 | .cra_driver_name = "__driver-cbc-serpent-avx", | |
394 | .cra_priority = 0, | |
65aed539 SM |
395 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
396 | CRYPTO_ALG_INTERNAL, | |
7efe4076 JG |
397 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
398 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
399 | .cra_alignmask = 0, | |
400 | .cra_type = &crypto_blkcipher_type, | |
401 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
402 | .cra_u = { |
403 | .blkcipher = { | |
404 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
405 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
406 | .setkey = serpent_setkey, | |
407 | .encrypt = cbc_encrypt, | |
408 | .decrypt = cbc_decrypt, | |
409 | }, | |
410 | }, | |
411 | }, { | |
412 | .cra_name = "__ctr-serpent-avx", | |
413 | .cra_driver_name = "__driver-ctr-serpent-avx", | |
414 | .cra_priority = 0, | |
65aed539 SM |
415 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
416 | CRYPTO_ALG_INTERNAL, | |
7efe4076 JG |
417 | .cra_blocksize = 1, |
418 | .cra_ctxsize = sizeof(struct serpent_ctx), | |
419 | .cra_alignmask = 0, | |
420 | .cra_type = &crypto_blkcipher_type, | |
421 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
422 | .cra_u = { |
423 | .blkcipher = { | |
424 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
425 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
426 | .ivsize = SERPENT_BLOCK_SIZE, | |
427 | .setkey = serpent_setkey, | |
428 | .encrypt = ctr_crypt, | |
429 | .decrypt = ctr_crypt, | |
430 | }, | |
431 | }, | |
432 | }, { | |
433 | .cra_name = "__lrw-serpent-avx", | |
434 | .cra_driver_name = "__driver-lrw-serpent-avx", | |
435 | .cra_priority = 0, | |
65aed539 SM |
436 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
437 | CRYPTO_ALG_INTERNAL, | |
7efe4076 JG |
438 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
439 | .cra_ctxsize = sizeof(struct serpent_lrw_ctx), | |
440 | .cra_alignmask = 0, | |
441 | .cra_type = &crypto_blkcipher_type, | |
442 | .cra_module = THIS_MODULE, | |
56d76c96 | 443 | .cra_exit = lrw_serpent_exit_tfm, |
7efe4076 JG |
444 | .cra_u = { |
445 | .blkcipher = { | |
446 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
447 | SERPENT_BLOCK_SIZE, | |
448 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
449 | SERPENT_BLOCK_SIZE, | |
450 | .ivsize = SERPENT_BLOCK_SIZE, | |
451 | .setkey = lrw_serpent_setkey, | |
452 | .encrypt = lrw_encrypt, | |
453 | .decrypt = lrw_decrypt, | |
454 | }, | |
455 | }, | |
456 | }, { | |
457 | .cra_name = "__xts-serpent-avx", | |
458 | .cra_driver_name = "__driver-xts-serpent-avx", | |
459 | .cra_priority = 0, | |
65aed539 SM |
460 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | |
461 | CRYPTO_ALG_INTERNAL, | |
7efe4076 JG |
462 | .cra_blocksize = SERPENT_BLOCK_SIZE, |
463 | .cra_ctxsize = sizeof(struct serpent_xts_ctx), | |
464 | .cra_alignmask = 0, | |
465 | .cra_type = &crypto_blkcipher_type, | |
466 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
467 | .cra_u = { |
468 | .blkcipher = { | |
469 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
470 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
471 | .ivsize = SERPENT_BLOCK_SIZE, | |
472 | .setkey = xts_serpent_setkey, | |
473 | .encrypt = xts_encrypt, | |
474 | .decrypt = xts_decrypt, | |
475 | }, | |
476 | }, | |
477 | }, { | |
478 | .cra_name = "ecb(serpent)", | |
479 | .cra_driver_name = "ecb-serpent-avx", | |
480 | .cra_priority = 500, | |
481 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
482 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 483 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
7efe4076 JG |
484 | .cra_alignmask = 0, |
485 | .cra_type = &crypto_ablkcipher_type, | |
486 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
487 | .cra_init = ablk_init, |
488 | .cra_exit = ablk_exit, | |
489 | .cra_u = { | |
490 | .ablkcipher = { | |
491 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
492 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
493 | .setkey = ablk_set_key, | |
494 | .encrypt = ablk_encrypt, | |
495 | .decrypt = ablk_decrypt, | |
496 | }, | |
497 | }, | |
498 | }, { | |
499 | .cra_name = "cbc(serpent)", | |
500 | .cra_driver_name = "cbc-serpent-avx", | |
501 | .cra_priority = 500, | |
502 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
503 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 504 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
7efe4076 JG |
505 | .cra_alignmask = 0, |
506 | .cra_type = &crypto_ablkcipher_type, | |
507 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
508 | .cra_init = ablk_init, |
509 | .cra_exit = ablk_exit, | |
510 | .cra_u = { | |
511 | .ablkcipher = { | |
512 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
513 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
514 | .ivsize = SERPENT_BLOCK_SIZE, | |
515 | .setkey = ablk_set_key, | |
516 | .encrypt = __ablk_encrypt, | |
517 | .decrypt = ablk_decrypt, | |
518 | }, | |
519 | }, | |
520 | }, { | |
521 | .cra_name = "ctr(serpent)", | |
522 | .cra_driver_name = "ctr-serpent-avx", | |
523 | .cra_priority = 500, | |
524 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
525 | .cra_blocksize = 1, | |
ffaf9156 | 526 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
7efe4076 JG |
527 | .cra_alignmask = 0, |
528 | .cra_type = &crypto_ablkcipher_type, | |
529 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
530 | .cra_init = ablk_init, |
531 | .cra_exit = ablk_exit, | |
532 | .cra_u = { | |
533 | .ablkcipher = { | |
534 | .min_keysize = SERPENT_MIN_KEY_SIZE, | |
535 | .max_keysize = SERPENT_MAX_KEY_SIZE, | |
536 | .ivsize = SERPENT_BLOCK_SIZE, | |
537 | .setkey = ablk_set_key, | |
538 | .encrypt = ablk_encrypt, | |
539 | .decrypt = ablk_encrypt, | |
540 | .geniv = "chainiv", | |
541 | }, | |
542 | }, | |
543 | }, { | |
544 | .cra_name = "lrw(serpent)", | |
545 | .cra_driver_name = "lrw-serpent-avx", | |
546 | .cra_priority = 500, | |
547 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
548 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 549 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
7efe4076 JG |
550 | .cra_alignmask = 0, |
551 | .cra_type = &crypto_ablkcipher_type, | |
552 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
553 | .cra_init = ablk_init, |
554 | .cra_exit = ablk_exit, | |
555 | .cra_u = { | |
556 | .ablkcipher = { | |
557 | .min_keysize = SERPENT_MIN_KEY_SIZE + | |
558 | SERPENT_BLOCK_SIZE, | |
559 | .max_keysize = SERPENT_MAX_KEY_SIZE + | |
560 | SERPENT_BLOCK_SIZE, | |
561 | .ivsize = SERPENT_BLOCK_SIZE, | |
562 | .setkey = ablk_set_key, | |
563 | .encrypt = ablk_encrypt, | |
564 | .decrypt = ablk_decrypt, | |
565 | }, | |
566 | }, | |
567 | }, { | |
568 | .cra_name = "xts(serpent)", | |
569 | .cra_driver_name = "xts-serpent-avx", | |
570 | .cra_priority = 500, | |
571 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
572 | .cra_blocksize = SERPENT_BLOCK_SIZE, | |
ffaf9156 | 573 | .cra_ctxsize = sizeof(struct async_helper_ctx), |
7efe4076 JG |
574 | .cra_alignmask = 0, |
575 | .cra_type = &crypto_ablkcipher_type, | |
576 | .cra_module = THIS_MODULE, | |
7efe4076 JG |
577 | .cra_init = ablk_init, |
578 | .cra_exit = ablk_exit, | |
579 | .cra_u = { | |
580 | .ablkcipher = { | |
581 | .min_keysize = SERPENT_MIN_KEY_SIZE * 2, | |
582 | .max_keysize = SERPENT_MAX_KEY_SIZE * 2, | |
583 | .ivsize = SERPENT_BLOCK_SIZE, | |
584 | .setkey = ablk_set_key, | |
585 | .encrypt = ablk_encrypt, | |
586 | .decrypt = ablk_decrypt, | |
587 | }, | |
588 | }, | |
589 | } }; | |
590 | ||
591 | static int __init serpent_init(void) | |
592 | { | |
c1c23f7e | 593 | const char *feature_name; |
7efe4076 | 594 | |
d91cab78 DH |
595 | if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, |
596 | &feature_name)) { | |
c1c23f7e | 597 | pr_info("CPU feature '%s' is not supported.\n", feature_name); |
7efe4076 JG |
598 | return -ENODEV; |
599 | } | |
600 | ||
601 | return crypto_register_algs(serpent_algs, ARRAY_SIZE(serpent_algs)); | |
602 | } | |
603 | ||
604 | static void __exit serpent_exit(void) | |
605 | { | |
606 | crypto_unregister_algs(serpent_algs, ARRAY_SIZE(serpent_algs)); | |
607 | } | |
608 | ||
609 | module_init(serpent_init); | |
610 | module_exit(serpent_exit); | |
611 | ||
612 | MODULE_DESCRIPTION("Serpent Cipher Algorithm, AVX optimized"); | |
613 | MODULE_LICENSE("GPL"); | |
5d26a105 | 614 | MODULE_ALIAS_CRYPTO("serpent"); |