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8280daad JK |
1 | /* |
2 | * Glue Code for 3-way parallel assembler optimized version of Twofish | |
3 | * | |
4 | * Copyright (c) 2011 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | |
5 | * | |
8280daad JK |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
19 | * USA | |
20 | * | |
21 | */ | |
22 | ||
a522ee85 | 23 | #include <asm/processor.h> |
8280daad JK |
24 | #include <linux/crypto.h> |
25 | #include <linux/init.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/types.h> | |
28 | #include <crypto/algapi.h> | |
29 | #include <crypto/twofish.h> | |
30 | #include <crypto/b128ops.h> | |
a7378d4e | 31 | #include <asm/crypto/twofish.h> |
414cb5e7 | 32 | #include <asm/crypto/glue_helper.h> |
81559f9a | 33 | #include <crypto/lrw.h> |
bae6d303 | 34 | #include <crypto/xts.h> |
81559f9a | 35 | |
107778b5 | 36 | EXPORT_SYMBOL_GPL(__twofish_enc_blk_3way); |
107778b5 | 37 | EXPORT_SYMBOL_GPL(twofish_dec_blk_3way); |
8280daad JK |
38 | |
39 | static inline void twofish_enc_blk_3way(struct twofish_ctx *ctx, u8 *dst, | |
40 | const u8 *src) | |
41 | { | |
42 | __twofish_enc_blk_3way(ctx, dst, src, false); | |
43 | } | |
44 | ||
45 | static inline void twofish_enc_blk_xor_3way(struct twofish_ctx *ctx, u8 *dst, | |
46 | const u8 *src) | |
47 | { | |
48 | __twofish_enc_blk_3way(ctx, dst, src, true); | |
49 | } | |
50 | ||
a7378d4e | 51 | void twofish_dec_blk_cbc_3way(void *ctx, u128 *dst, const u128 *src) |
8280daad | 52 | { |
414cb5e7 | 53 | u128 ivs[2]; |
8280daad | 54 | |
414cb5e7 JK |
55 | ivs[0] = src[0]; |
56 | ivs[1] = src[1]; | |
8280daad | 57 | |
414cb5e7 | 58 | twofish_dec_blk_3way(ctx, (u8 *)dst, (u8 *)src); |
8280daad | 59 | |
414cb5e7 JK |
60 | u128_xor(&dst[1], &dst[1], &ivs[0]); |
61 | u128_xor(&dst[2], &dst[2], &ivs[1]); | |
8280daad | 62 | } |
a7378d4e | 63 | EXPORT_SYMBOL_GPL(twofish_dec_blk_cbc_3way); |
8280daad | 64 | |
58990986 | 65 | void twofish_enc_blk_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv) |
8280daad | 66 | { |
414cb5e7 | 67 | be128 ctrblk; |
8280daad | 68 | |
414cb5e7 JK |
69 | if (dst != src) |
70 | *dst = *src; | |
8280daad | 71 | |
58990986 JK |
72 | le128_to_be128(&ctrblk, iv); |
73 | le128_inc(iv); | |
8280daad | 74 | |
414cb5e7 JK |
75 | twofish_enc_blk(ctx, (u8 *)&ctrblk, (u8 *)&ctrblk); |
76 | u128_xor(dst, dst, (u128 *)&ctrblk); | |
8280daad | 77 | } |
a7378d4e | 78 | EXPORT_SYMBOL_GPL(twofish_enc_blk_ctr); |
8280daad | 79 | |
a7378d4e | 80 | void twofish_enc_blk_ctr_3way(void *ctx, u128 *dst, const u128 *src, |
58990986 | 81 | le128 *iv) |
8280daad | 82 | { |
414cb5e7 | 83 | be128 ctrblks[3]; |
8280daad | 84 | |
414cb5e7 JK |
85 | if (dst != src) { |
86 | dst[0] = src[0]; | |
87 | dst[1] = src[1]; | |
88 | dst[2] = src[2]; | |
8280daad JK |
89 | } |
90 | ||
58990986 JK |
91 | le128_to_be128(&ctrblks[0], iv); |
92 | le128_inc(iv); | |
93 | le128_to_be128(&ctrblks[1], iv); | |
94 | le128_inc(iv); | |
95 | le128_to_be128(&ctrblks[2], iv); | |
96 | le128_inc(iv); | |
414cb5e7 JK |
97 | |
98 | twofish_enc_blk_xor_3way(ctx, (u8 *)dst, (u8 *)ctrblks); | |
99 | } | |
a7378d4e | 100 | EXPORT_SYMBOL_GPL(twofish_enc_blk_ctr_3way); |
414cb5e7 JK |
101 | |
102 | static const struct common_glue_ctx twofish_enc = { | |
103 | .num_funcs = 2, | |
104 | .fpu_blocks_limit = -1, | |
105 | ||
106 | .funcs = { { | |
107 | .num_blocks = 3, | |
108 | .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk_3way) } | |
109 | }, { | |
110 | .num_blocks = 1, | |
111 | .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk) } | |
112 | } } | |
113 | }; | |
114 | ||
115 | static const struct common_glue_ctx twofish_ctr = { | |
116 | .num_funcs = 2, | |
117 | .fpu_blocks_limit = -1, | |
118 | ||
119 | .funcs = { { | |
120 | .num_blocks = 3, | |
121 | .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk_ctr_3way) } | |
122 | }, { | |
123 | .num_blocks = 1, | |
124 | .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_enc_blk_ctr) } | |
125 | } } | |
126 | }; | |
127 | ||
128 | static const struct common_glue_ctx twofish_dec = { | |
129 | .num_funcs = 2, | |
130 | .fpu_blocks_limit = -1, | |
131 | ||
132 | .funcs = { { | |
133 | .num_blocks = 3, | |
134 | .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk_3way) } | |
135 | }, { | |
136 | .num_blocks = 1, | |
137 | .fn_u = { .ecb = GLUE_FUNC_CAST(twofish_dec_blk) } | |
138 | } } | |
139 | }; | |
140 | ||
141 | static const struct common_glue_ctx twofish_dec_cbc = { | |
142 | .num_funcs = 2, | |
143 | .fpu_blocks_limit = -1, | |
144 | ||
145 | .funcs = { { | |
146 | .num_blocks = 3, | |
147 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk_cbc_3way) } | |
148 | }, { | |
149 | .num_blocks = 1, | |
150 | .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(twofish_dec_blk) } | |
151 | } } | |
152 | }; | |
8280daad | 153 | |
414cb5e7 | 154 | static int ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
8280daad JK |
155 | struct scatterlist *src, unsigned int nbytes) |
156 | { | |
414cb5e7 | 157 | return glue_ecb_crypt_128bit(&twofish_enc, desc, dst, src, nbytes); |
8280daad JK |
158 | } |
159 | ||
414cb5e7 JK |
160 | static int ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
161 | struct scatterlist *src, unsigned int nbytes) | |
8280daad | 162 | { |
414cb5e7 | 163 | return glue_ecb_crypt_128bit(&twofish_dec, desc, dst, src, nbytes); |
8280daad JK |
164 | } |
165 | ||
414cb5e7 JK |
166 | static int cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
167 | struct scatterlist *src, unsigned int nbytes) | |
8280daad | 168 | { |
414cb5e7 JK |
169 | return glue_cbc_encrypt_128bit(GLUE_FUNC_CAST(twofish_enc_blk), desc, |
170 | dst, src, nbytes); | |
8280daad JK |
171 | } |
172 | ||
414cb5e7 JK |
173 | static int cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, |
174 | struct scatterlist *src, unsigned int nbytes) | |
8280daad | 175 | { |
414cb5e7 JK |
176 | return glue_cbc_decrypt_128bit(&twofish_dec_cbc, desc, dst, src, |
177 | nbytes); | |
8280daad JK |
178 | } |
179 | ||
180 | static int ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
181 | struct scatterlist *src, unsigned int nbytes) | |
182 | { | |
414cb5e7 | 183 | return glue_ctr_crypt_128bit(&twofish_ctr, desc, dst, src, nbytes); |
8280daad JK |
184 | } |
185 | ||
81559f9a JK |
186 | static void encrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) |
187 | { | |
188 | const unsigned int bsize = TF_BLOCK_SIZE; | |
189 | struct twofish_ctx *ctx = priv; | |
190 | int i; | |
191 | ||
192 | if (nbytes == 3 * bsize) { | |
193 | twofish_enc_blk_3way(ctx, srcdst, srcdst); | |
194 | return; | |
195 | } | |
196 | ||
197 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
198 | twofish_enc_blk(ctx, srcdst, srcdst); | |
199 | } | |
200 | ||
201 | static void decrypt_callback(void *priv, u8 *srcdst, unsigned int nbytes) | |
202 | { | |
203 | const unsigned int bsize = TF_BLOCK_SIZE; | |
204 | struct twofish_ctx *ctx = priv; | |
205 | int i; | |
206 | ||
207 | if (nbytes == 3 * bsize) { | |
208 | twofish_dec_blk_3way(ctx, srcdst, srcdst); | |
209 | return; | |
210 | } | |
211 | ||
212 | for (i = 0; i < nbytes / bsize; i++, srcdst += bsize) | |
213 | twofish_dec_blk(ctx, srcdst, srcdst); | |
214 | } | |
215 | ||
a7378d4e JK |
216 | int lrw_twofish_setkey(struct crypto_tfm *tfm, const u8 *key, |
217 | unsigned int keylen) | |
81559f9a JK |
218 | { |
219 | struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
220 | int err; | |
221 | ||
222 | err = __twofish_setkey(&ctx->twofish_ctx, key, keylen - TF_BLOCK_SIZE, | |
223 | &tfm->crt_flags); | |
224 | if (err) | |
225 | return err; | |
226 | ||
227 | return lrw_init_table(&ctx->lrw_table, key + keylen - TF_BLOCK_SIZE); | |
228 | } | |
a7378d4e | 229 | EXPORT_SYMBOL_GPL(lrw_twofish_setkey); |
81559f9a JK |
230 | |
231 | static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
232 | struct scatterlist *src, unsigned int nbytes) | |
233 | { | |
234 | struct twofish_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
235 | be128 buf[3]; | |
236 | struct lrw_crypt_req req = { | |
237 | .tbuf = buf, | |
238 | .tbuflen = sizeof(buf), | |
239 | ||
240 | .table_ctx = &ctx->lrw_table, | |
241 | .crypt_ctx = &ctx->twofish_ctx, | |
242 | .crypt_fn = encrypt_callback, | |
243 | }; | |
244 | ||
245 | return lrw_crypt(desc, dst, src, nbytes, &req); | |
246 | } | |
247 | ||
248 | static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
249 | struct scatterlist *src, unsigned int nbytes) | |
250 | { | |
251 | struct twofish_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
252 | be128 buf[3]; | |
253 | struct lrw_crypt_req req = { | |
254 | .tbuf = buf, | |
255 | .tbuflen = sizeof(buf), | |
256 | ||
257 | .table_ctx = &ctx->lrw_table, | |
258 | .crypt_ctx = &ctx->twofish_ctx, | |
259 | .crypt_fn = decrypt_callback, | |
260 | }; | |
261 | ||
262 | return lrw_crypt(desc, dst, src, nbytes, &req); | |
263 | } | |
264 | ||
a7378d4e | 265 | void lrw_twofish_exit_tfm(struct crypto_tfm *tfm) |
81559f9a JK |
266 | { |
267 | struct twofish_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
268 | ||
269 | lrw_free_table(&ctx->lrw_table); | |
270 | } | |
a7378d4e | 271 | EXPORT_SYMBOL_GPL(lrw_twofish_exit_tfm); |
81559f9a | 272 | |
a7378d4e JK |
273 | int xts_twofish_setkey(struct crypto_tfm *tfm, const u8 *key, |
274 | unsigned int keylen) | |
bae6d303 JK |
275 | { |
276 | struct twofish_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
277 | u32 *flags = &tfm->crt_flags; | |
278 | int err; | |
279 | ||
280 | /* key consists of keys of equal size concatenated, therefore | |
281 | * the length must be even | |
282 | */ | |
283 | if (keylen % 2) { | |
284 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
285 | return -EINVAL; | |
286 | } | |
287 | ||
288 | /* first half of xts-key is for crypt */ | |
289 | err = __twofish_setkey(&ctx->crypt_ctx, key, keylen / 2, flags); | |
290 | if (err) | |
291 | return err; | |
292 | ||
293 | /* second half of xts-key is for tweak */ | |
294 | return __twofish_setkey(&ctx->tweak_ctx, key + keylen / 2, keylen / 2, | |
295 | flags); | |
296 | } | |
a7378d4e | 297 | EXPORT_SYMBOL_GPL(xts_twofish_setkey); |
bae6d303 JK |
298 | |
299 | static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
300 | struct scatterlist *src, unsigned int nbytes) | |
301 | { | |
302 | struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
303 | be128 buf[3]; | |
304 | struct xts_crypt_req req = { | |
305 | .tbuf = buf, | |
306 | .tbuflen = sizeof(buf), | |
307 | ||
308 | .tweak_ctx = &ctx->tweak_ctx, | |
309 | .tweak_fn = XTS_TWEAK_CAST(twofish_enc_blk), | |
310 | .crypt_ctx = &ctx->crypt_ctx, | |
311 | .crypt_fn = encrypt_callback, | |
312 | }; | |
313 | ||
314 | return xts_crypt(desc, dst, src, nbytes, &req); | |
315 | } | |
316 | ||
317 | static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
318 | struct scatterlist *src, unsigned int nbytes) | |
319 | { | |
320 | struct twofish_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
321 | be128 buf[3]; | |
322 | struct xts_crypt_req req = { | |
323 | .tbuf = buf, | |
324 | .tbuflen = sizeof(buf), | |
325 | ||
326 | .tweak_ctx = &ctx->tweak_ctx, | |
327 | .tweak_fn = XTS_TWEAK_CAST(twofish_enc_blk), | |
328 | .crypt_ctx = &ctx->crypt_ctx, | |
329 | .crypt_fn = decrypt_callback, | |
330 | }; | |
331 | ||
332 | return xts_crypt(desc, dst, src, nbytes, &req); | |
333 | } | |
334 | ||
53709dde JK |
335 | static struct crypto_alg tf_algs[5] = { { |
336 | .cra_name = "ecb(twofish)", | |
337 | .cra_driver_name = "ecb-twofish-3way", | |
338 | .cra_priority = 300, | |
339 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
340 | .cra_blocksize = TF_BLOCK_SIZE, | |
341 | .cra_ctxsize = sizeof(struct twofish_ctx), | |
342 | .cra_alignmask = 0, | |
343 | .cra_type = &crypto_blkcipher_type, | |
344 | .cra_module = THIS_MODULE, | |
53709dde JK |
345 | .cra_u = { |
346 | .blkcipher = { | |
347 | .min_keysize = TF_MIN_KEY_SIZE, | |
348 | .max_keysize = TF_MAX_KEY_SIZE, | |
349 | .setkey = twofish_setkey, | |
350 | .encrypt = ecb_encrypt, | |
351 | .decrypt = ecb_decrypt, | |
352 | }, | |
353 | }, | |
354 | }, { | |
355 | .cra_name = "cbc(twofish)", | |
356 | .cra_driver_name = "cbc-twofish-3way", | |
357 | .cra_priority = 300, | |
358 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
359 | .cra_blocksize = TF_BLOCK_SIZE, | |
360 | .cra_ctxsize = sizeof(struct twofish_ctx), | |
361 | .cra_alignmask = 0, | |
362 | .cra_type = &crypto_blkcipher_type, | |
363 | .cra_module = THIS_MODULE, | |
53709dde JK |
364 | .cra_u = { |
365 | .blkcipher = { | |
366 | .min_keysize = TF_MIN_KEY_SIZE, | |
367 | .max_keysize = TF_MAX_KEY_SIZE, | |
368 | .ivsize = TF_BLOCK_SIZE, | |
369 | .setkey = twofish_setkey, | |
370 | .encrypt = cbc_encrypt, | |
371 | .decrypt = cbc_decrypt, | |
372 | }, | |
373 | }, | |
374 | }, { | |
375 | .cra_name = "ctr(twofish)", | |
376 | .cra_driver_name = "ctr-twofish-3way", | |
377 | .cra_priority = 300, | |
378 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
379 | .cra_blocksize = 1, | |
380 | .cra_ctxsize = sizeof(struct twofish_ctx), | |
381 | .cra_alignmask = 0, | |
382 | .cra_type = &crypto_blkcipher_type, | |
383 | .cra_module = THIS_MODULE, | |
53709dde JK |
384 | .cra_u = { |
385 | .blkcipher = { | |
386 | .min_keysize = TF_MIN_KEY_SIZE, | |
387 | .max_keysize = TF_MAX_KEY_SIZE, | |
388 | .ivsize = TF_BLOCK_SIZE, | |
389 | .setkey = twofish_setkey, | |
390 | .encrypt = ctr_crypt, | |
391 | .decrypt = ctr_crypt, | |
392 | }, | |
393 | }, | |
394 | }, { | |
395 | .cra_name = "lrw(twofish)", | |
396 | .cra_driver_name = "lrw-twofish-3way", | |
397 | .cra_priority = 300, | |
398 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
399 | .cra_blocksize = TF_BLOCK_SIZE, | |
400 | .cra_ctxsize = sizeof(struct twofish_lrw_ctx), | |
401 | .cra_alignmask = 0, | |
402 | .cra_type = &crypto_blkcipher_type, | |
403 | .cra_module = THIS_MODULE, | |
a7378d4e | 404 | .cra_exit = lrw_twofish_exit_tfm, |
53709dde JK |
405 | .cra_u = { |
406 | .blkcipher = { | |
407 | .min_keysize = TF_MIN_KEY_SIZE + TF_BLOCK_SIZE, | |
408 | .max_keysize = TF_MAX_KEY_SIZE + TF_BLOCK_SIZE, | |
409 | .ivsize = TF_BLOCK_SIZE, | |
410 | .setkey = lrw_twofish_setkey, | |
411 | .encrypt = lrw_encrypt, | |
412 | .decrypt = lrw_decrypt, | |
413 | }, | |
414 | }, | |
415 | }, { | |
bae6d303 JK |
416 | .cra_name = "xts(twofish)", |
417 | .cra_driver_name = "xts-twofish-3way", | |
418 | .cra_priority = 300, | |
419 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
420 | .cra_blocksize = TF_BLOCK_SIZE, | |
421 | .cra_ctxsize = sizeof(struct twofish_xts_ctx), | |
422 | .cra_alignmask = 0, | |
423 | .cra_type = &crypto_blkcipher_type, | |
424 | .cra_module = THIS_MODULE, | |
bae6d303 JK |
425 | .cra_u = { |
426 | .blkcipher = { | |
427 | .min_keysize = TF_MIN_KEY_SIZE * 2, | |
428 | .max_keysize = TF_MAX_KEY_SIZE * 2, | |
429 | .ivsize = TF_BLOCK_SIZE, | |
430 | .setkey = xts_twofish_setkey, | |
431 | .encrypt = xts_encrypt, | |
432 | .decrypt = xts_decrypt, | |
433 | }, | |
434 | }, | |
53709dde | 435 | } }; |
bae6d303 | 436 | |
a522ee85 JK |
437 | static bool is_blacklisted_cpu(void) |
438 | { | |
439 | if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) | |
440 | return false; | |
441 | ||
442 | if (boot_cpu_data.x86 == 0x06 && | |
443 | (boot_cpu_data.x86_model == 0x1c || | |
444 | boot_cpu_data.x86_model == 0x26 || | |
445 | boot_cpu_data.x86_model == 0x36)) { | |
446 | /* | |
447 | * On Atom, twofish-3way is slower than original assembler | |
448 | * implementation. Twofish-3way trades off some performance in | |
449 | * storing blocks in 64bit registers to allow three blocks to | |
450 | * be processed parallel. Parallel operation then allows gaining | |
451 | * more performance than was trade off, on out-of-order CPUs. | |
452 | * However Atom does not benefit from this parallellism and | |
453 | * should be blacklisted. | |
454 | */ | |
455 | return true; | |
456 | } | |
457 | ||
458 | if (boot_cpu_data.x86 == 0x0f) { | |
459 | /* | |
460 | * On Pentium 4, twofish-3way is slower than original assembler | |
461 | * implementation because excessive uses of 64bit rotate and | |
462 | * left-shifts (which are really slow on P4) needed to store and | |
463 | * handle 128bit block in two 64bit registers. | |
464 | */ | |
465 | return true; | |
466 | } | |
467 | ||
468 | return false; | |
469 | } | |
470 | ||
471 | static int force; | |
472 | module_param(force, int, 0); | |
473 | MODULE_PARM_DESC(force, "Force module load, ignore CPU blacklist"); | |
474 | ||
ff0a70fe | 475 | static int __init init(void) |
8280daad | 476 | { |
a522ee85 JK |
477 | if (!force && is_blacklisted_cpu()) { |
478 | printk(KERN_INFO | |
479 | "twofish-x86_64-3way: performance on this CPU " | |
480 | "would be suboptimal: disabling " | |
481 | "twofish-x86_64-3way.\n"); | |
482 | return -ENODEV; | |
483 | } | |
484 | ||
53709dde | 485 | return crypto_register_algs(tf_algs, ARRAY_SIZE(tf_algs)); |
8280daad JK |
486 | } |
487 | ||
ff0a70fe | 488 | static void __exit fini(void) |
8280daad | 489 | { |
53709dde | 490 | crypto_unregister_algs(tf_algs, ARRAY_SIZE(tf_algs)); |
8280daad JK |
491 | } |
492 | ||
493 | module_init(init); | |
494 | module_exit(fini); | |
495 | ||
496 | MODULE_LICENSE("GPL"); | |
497 | MODULE_DESCRIPTION("Twofish Cipher Algorithm, 3-way parallel asm optimized"); | |
5d26a105 KC |
498 | MODULE_ALIAS_CRYPTO("twofish"); |
499 | MODULE_ALIAS_CRYPTO("twofish-asm"); |