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8a28a1a8 MS |
1 | /* |
2 | * Glue code for AES implementation for SPE instructions (PPC) | |
3 | * | |
4 | * Based on generic implementation. The assembler module takes care | |
5 | * about the SPE registers so it can run from interrupt context. | |
6 | * | |
7 | * Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public License as published by the Free | |
11 | * Software Foundation; either version 2 of the License, or (at your option) | |
12 | * any later version. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <crypto/aes.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/types.h> | |
20 | #include <linux/errno.h> | |
21 | #include <linux/crypto.h> | |
22 | #include <asm/byteorder.h> | |
23 | #include <asm/switch_to.h> | |
24 | #include <crypto/algapi.h> | |
49abc0d2 | 25 | #include <crypto/xts.h> |
8a28a1a8 MS |
26 | |
27 | /* | |
28 | * MAX_BYTES defines the number of bytes that are allowed to be processed | |
29 | * between preempt_disable() and preempt_enable(). e500 cores can issue two | |
30 | * instructions per clock cycle using one 32/64 bit unit (SU1) and one 32 | |
31 | * bit unit (SU2). One of these can be a memory access that is executed via | |
32 | * a single load and store unit (LSU). XTS-AES-256 takes ~780 operations per | |
33 | * 16 byte block block or 25 cycles per byte. Thus 768 bytes of input data | |
34 | * will need an estimated maximum of 20,000 cycles. Headroom for cache misses | |
35 | * included. Even with the low end model clocked at 667 MHz this equals to a | |
446957ba | 36 | * critical time window of less than 30us. The value has been chosen to |
8a28a1a8 MS |
37 | * process a 512 byte disk block in one or a large 1400 bytes IPsec network |
38 | * packet in two runs. | |
39 | * | |
40 | */ | |
41 | #define MAX_BYTES 768 | |
42 | ||
43 | struct ppc_aes_ctx { | |
44 | u32 key_enc[AES_MAX_KEYLENGTH_U32]; | |
45 | u32 key_dec[AES_MAX_KEYLENGTH_U32]; | |
46 | u32 rounds; | |
47 | }; | |
48 | ||
49 | struct ppc_xts_ctx { | |
50 | u32 key_enc[AES_MAX_KEYLENGTH_U32]; | |
51 | u32 key_dec[AES_MAX_KEYLENGTH_U32]; | |
52 | u32 key_twk[AES_MAX_KEYLENGTH_U32]; | |
53 | u32 rounds; | |
54 | }; | |
55 | ||
56 | extern void ppc_encrypt_aes(u8 *out, const u8 *in, u32 *key_enc, u32 rounds); | |
57 | extern void ppc_decrypt_aes(u8 *out, const u8 *in, u32 *key_dec, u32 rounds); | |
58 | extern void ppc_encrypt_ecb(u8 *out, const u8 *in, u32 *key_enc, u32 rounds, | |
59 | u32 bytes); | |
60 | extern void ppc_decrypt_ecb(u8 *out, const u8 *in, u32 *key_dec, u32 rounds, | |
61 | u32 bytes); | |
62 | extern void ppc_encrypt_cbc(u8 *out, const u8 *in, u32 *key_enc, u32 rounds, | |
63 | u32 bytes, u8 *iv); | |
64 | extern void ppc_decrypt_cbc(u8 *out, const u8 *in, u32 *key_dec, u32 rounds, | |
65 | u32 bytes, u8 *iv); | |
66 | extern void ppc_crypt_ctr (u8 *out, const u8 *in, u32 *key_enc, u32 rounds, | |
67 | u32 bytes, u8 *iv); | |
68 | extern void ppc_encrypt_xts(u8 *out, const u8 *in, u32 *key_enc, u32 rounds, | |
69 | u32 bytes, u8 *iv, u32 *key_twk); | |
70 | extern void ppc_decrypt_xts(u8 *out, const u8 *in, u32 *key_dec, u32 rounds, | |
71 | u32 bytes, u8 *iv, u32 *key_twk); | |
72 | ||
73 | extern void ppc_expand_key_128(u32 *key_enc, const u8 *key); | |
74 | extern void ppc_expand_key_192(u32 *key_enc, const u8 *key); | |
75 | extern void ppc_expand_key_256(u32 *key_enc, const u8 *key); | |
76 | ||
77 | extern void ppc_generate_decrypt_key(u32 *key_dec,u32 *key_enc, | |
78 | unsigned int key_len); | |
79 | ||
80 | static void spe_begin(void) | |
81 | { | |
82 | /* disable preemption and save users SPE registers if required */ | |
83 | preempt_disable(); | |
84 | enable_kernel_spe(); | |
85 | } | |
86 | ||
87 | static void spe_end(void) | |
88 | { | |
dc4fbba1 | 89 | disable_kernel_spe(); |
8a28a1a8 MS |
90 | /* reenable preemption */ |
91 | preempt_enable(); | |
92 | } | |
93 | ||
94 | static int ppc_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key, | |
95 | unsigned int key_len) | |
96 | { | |
97 | struct ppc_aes_ctx *ctx = crypto_tfm_ctx(tfm); | |
98 | ||
99 | if (key_len != AES_KEYSIZE_128 && | |
100 | key_len != AES_KEYSIZE_192 && | |
101 | key_len != AES_KEYSIZE_256) { | |
102 | tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
103 | return -EINVAL; | |
104 | } | |
105 | ||
106 | switch (key_len) { | |
107 | case AES_KEYSIZE_128: | |
108 | ctx->rounds = 4; | |
109 | ppc_expand_key_128(ctx->key_enc, in_key); | |
110 | break; | |
111 | case AES_KEYSIZE_192: | |
112 | ctx->rounds = 5; | |
113 | ppc_expand_key_192(ctx->key_enc, in_key); | |
114 | break; | |
115 | case AES_KEYSIZE_256: | |
116 | ctx->rounds = 6; | |
117 | ppc_expand_key_256(ctx->key_enc, in_key); | |
118 | break; | |
119 | } | |
120 | ||
121 | ppc_generate_decrypt_key(ctx->key_dec, ctx->key_enc, key_len); | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | static int ppc_xts_setkey(struct crypto_tfm *tfm, const u8 *in_key, | |
127 | unsigned int key_len) | |
128 | { | |
129 | struct ppc_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
28856a9e SM |
130 | int err; |
131 | ||
132 | err = xts_check_key(tfm, in_key, key_len); | |
133 | if (err) | |
134 | return err; | |
8a28a1a8 MS |
135 | |
136 | key_len >>= 1; | |
137 | ||
138 | if (key_len != AES_KEYSIZE_128 && | |
139 | key_len != AES_KEYSIZE_192 && | |
140 | key_len != AES_KEYSIZE_256) { | |
141 | tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
142 | return -EINVAL; | |
143 | } | |
144 | ||
145 | switch (key_len) { | |
146 | case AES_KEYSIZE_128: | |
147 | ctx->rounds = 4; | |
148 | ppc_expand_key_128(ctx->key_enc, in_key); | |
149 | ppc_expand_key_128(ctx->key_twk, in_key + AES_KEYSIZE_128); | |
150 | break; | |
151 | case AES_KEYSIZE_192: | |
152 | ctx->rounds = 5; | |
153 | ppc_expand_key_192(ctx->key_enc, in_key); | |
154 | ppc_expand_key_192(ctx->key_twk, in_key + AES_KEYSIZE_192); | |
155 | break; | |
156 | case AES_KEYSIZE_256: | |
157 | ctx->rounds = 6; | |
158 | ppc_expand_key_256(ctx->key_enc, in_key); | |
159 | ppc_expand_key_256(ctx->key_twk, in_key + AES_KEYSIZE_256); | |
160 | break; | |
161 | } | |
162 | ||
163 | ppc_generate_decrypt_key(ctx->key_dec, ctx->key_enc, key_len); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | static void ppc_aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) | |
169 | { | |
170 | struct ppc_aes_ctx *ctx = crypto_tfm_ctx(tfm); | |
171 | ||
172 | spe_begin(); | |
173 | ppc_encrypt_aes(out, in, ctx->key_enc, ctx->rounds); | |
174 | spe_end(); | |
175 | } | |
176 | ||
177 | static void ppc_aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) | |
178 | { | |
179 | struct ppc_aes_ctx *ctx = crypto_tfm_ctx(tfm); | |
180 | ||
181 | spe_begin(); | |
182 | ppc_decrypt_aes(out, in, ctx->key_dec, ctx->rounds); | |
183 | spe_end(); | |
184 | } | |
185 | ||
186 | static int ppc_ecb_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
187 | struct scatterlist *src, unsigned int nbytes) | |
188 | { | |
189 | struct ppc_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
190 | struct blkcipher_walk walk; | |
191 | unsigned int ubytes; | |
192 | int err; | |
193 | ||
194 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
195 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
196 | err = blkcipher_walk_virt(desc, &walk); | |
197 | ||
198 | while ((nbytes = walk.nbytes)) { | |
199 | ubytes = nbytes > MAX_BYTES ? | |
200 | nbytes - MAX_BYTES : nbytes & (AES_BLOCK_SIZE - 1); | |
201 | nbytes -= ubytes; | |
202 | ||
203 | spe_begin(); | |
204 | ppc_encrypt_ecb(walk.dst.virt.addr, walk.src.virt.addr, | |
205 | ctx->key_enc, ctx->rounds, nbytes); | |
206 | spe_end(); | |
207 | ||
208 | err = blkcipher_walk_done(desc, &walk, ubytes); | |
209 | } | |
210 | ||
211 | return err; | |
212 | } | |
213 | ||
214 | static int ppc_ecb_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
215 | struct scatterlist *src, unsigned int nbytes) | |
216 | { | |
217 | struct ppc_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
218 | struct blkcipher_walk walk; | |
219 | unsigned int ubytes; | |
220 | int err; | |
221 | ||
222 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
223 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
224 | err = blkcipher_walk_virt(desc, &walk); | |
225 | ||
226 | while ((nbytes = walk.nbytes)) { | |
227 | ubytes = nbytes > MAX_BYTES ? | |
228 | nbytes - MAX_BYTES : nbytes & (AES_BLOCK_SIZE - 1); | |
229 | nbytes -= ubytes; | |
230 | ||
231 | spe_begin(); | |
232 | ppc_decrypt_ecb(walk.dst.virt.addr, walk.src.virt.addr, | |
233 | ctx->key_dec, ctx->rounds, nbytes); | |
234 | spe_end(); | |
235 | ||
236 | err = blkcipher_walk_done(desc, &walk, ubytes); | |
237 | } | |
238 | ||
239 | return err; | |
240 | } | |
241 | ||
242 | static int ppc_cbc_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
243 | struct scatterlist *src, unsigned int nbytes) | |
244 | { | |
245 | struct ppc_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
246 | struct blkcipher_walk walk; | |
247 | unsigned int ubytes; | |
248 | int err; | |
249 | ||
250 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
251 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
252 | err = blkcipher_walk_virt(desc, &walk); | |
253 | ||
254 | while ((nbytes = walk.nbytes)) { | |
255 | ubytes = nbytes > MAX_BYTES ? | |
256 | nbytes - MAX_BYTES : nbytes & (AES_BLOCK_SIZE - 1); | |
257 | nbytes -= ubytes; | |
258 | ||
259 | spe_begin(); | |
260 | ppc_encrypt_cbc(walk.dst.virt.addr, walk.src.virt.addr, | |
261 | ctx->key_enc, ctx->rounds, nbytes, walk.iv); | |
262 | spe_end(); | |
263 | ||
264 | err = blkcipher_walk_done(desc, &walk, ubytes); | |
265 | } | |
266 | ||
267 | return err; | |
268 | } | |
269 | ||
270 | static int ppc_cbc_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
271 | struct scatterlist *src, unsigned int nbytes) | |
272 | { | |
273 | struct ppc_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
274 | struct blkcipher_walk walk; | |
275 | unsigned int ubytes; | |
276 | int err; | |
277 | ||
278 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
279 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
280 | err = blkcipher_walk_virt(desc, &walk); | |
281 | ||
282 | while ((nbytes = walk.nbytes)) { | |
283 | ubytes = nbytes > MAX_BYTES ? | |
284 | nbytes - MAX_BYTES : nbytes & (AES_BLOCK_SIZE - 1); | |
285 | nbytes -= ubytes; | |
286 | ||
287 | spe_begin(); | |
288 | ppc_decrypt_cbc(walk.dst.virt.addr, walk.src.virt.addr, | |
289 | ctx->key_dec, ctx->rounds, nbytes, walk.iv); | |
290 | spe_end(); | |
291 | ||
292 | err = blkcipher_walk_done(desc, &walk, ubytes); | |
293 | } | |
294 | ||
295 | return err; | |
296 | } | |
297 | ||
298 | static int ppc_ctr_crypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
299 | struct scatterlist *src, unsigned int nbytes) | |
300 | { | |
301 | struct ppc_aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
302 | struct blkcipher_walk walk; | |
303 | unsigned int pbytes, ubytes; | |
304 | int err; | |
305 | ||
306 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
307 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
308 | err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); | |
309 | ||
310 | while ((pbytes = walk.nbytes)) { | |
311 | pbytes = pbytes > MAX_BYTES ? MAX_BYTES : pbytes; | |
312 | pbytes = pbytes == nbytes ? | |
313 | nbytes : pbytes & ~(AES_BLOCK_SIZE - 1); | |
314 | ubytes = walk.nbytes - pbytes; | |
315 | ||
316 | spe_begin(); | |
317 | ppc_crypt_ctr(walk.dst.virt.addr, walk.src.virt.addr, | |
318 | ctx->key_enc, ctx->rounds, pbytes , walk.iv); | |
319 | spe_end(); | |
320 | ||
321 | nbytes -= pbytes; | |
322 | err = blkcipher_walk_done(desc, &walk, ubytes); | |
323 | } | |
324 | ||
325 | return err; | |
326 | } | |
327 | ||
328 | static int ppc_xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
329 | struct scatterlist *src, unsigned int nbytes) | |
330 | { | |
331 | struct ppc_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
332 | struct blkcipher_walk walk; | |
333 | unsigned int ubytes; | |
334 | int err; | |
335 | u32 *twk; | |
336 | ||
337 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
338 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
339 | err = blkcipher_walk_virt(desc, &walk); | |
340 | twk = ctx->key_twk; | |
341 | ||
342 | while ((nbytes = walk.nbytes)) { | |
343 | ubytes = nbytes > MAX_BYTES ? | |
344 | nbytes - MAX_BYTES : nbytes & (AES_BLOCK_SIZE - 1); | |
345 | nbytes -= ubytes; | |
346 | ||
347 | spe_begin(); | |
348 | ppc_encrypt_xts(walk.dst.virt.addr, walk.src.virt.addr, | |
349 | ctx->key_enc, ctx->rounds, nbytes, walk.iv, twk); | |
350 | spe_end(); | |
351 | ||
352 | twk = NULL; | |
353 | err = blkcipher_walk_done(desc, &walk, ubytes); | |
354 | } | |
355 | ||
356 | return err; | |
357 | } | |
358 | ||
359 | static int ppc_xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
360 | struct scatterlist *src, unsigned int nbytes) | |
361 | { | |
362 | struct ppc_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
363 | struct blkcipher_walk walk; | |
364 | unsigned int ubytes; | |
365 | int err; | |
366 | u32 *twk; | |
367 | ||
368 | desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
369 | blkcipher_walk_init(&walk, dst, src, nbytes); | |
370 | err = blkcipher_walk_virt(desc, &walk); | |
371 | twk = ctx->key_twk; | |
372 | ||
373 | while ((nbytes = walk.nbytes)) { | |
374 | ubytes = nbytes > MAX_BYTES ? | |
375 | nbytes - MAX_BYTES : nbytes & (AES_BLOCK_SIZE - 1); | |
376 | nbytes -= ubytes; | |
377 | ||
378 | spe_begin(); | |
379 | ppc_decrypt_xts(walk.dst.virt.addr, walk.src.virt.addr, | |
380 | ctx->key_dec, ctx->rounds, nbytes, walk.iv, twk); | |
381 | spe_end(); | |
382 | ||
383 | twk = NULL; | |
384 | err = blkcipher_walk_done(desc, &walk, ubytes); | |
385 | } | |
386 | ||
387 | return err; | |
388 | } | |
389 | ||
390 | /* | |
391 | * Algorithm definitions. Disabling alignment (cra_alignmask=0) was chosen | |
392 | * because the e500 platform can handle unaligned reads/writes very efficently. | |
393 | * This improves IPsec thoughput by another few percent. Additionally we assume | |
394 | * that AES context is always aligned to at least 8 bytes because it is created | |
395 | * with kmalloc() in the crypto infrastructure | |
396 | * | |
397 | */ | |
398 | static struct crypto_alg aes_algs[] = { { | |
399 | .cra_name = "aes", | |
400 | .cra_driver_name = "aes-ppc-spe", | |
401 | .cra_priority = 300, | |
402 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
403 | .cra_blocksize = AES_BLOCK_SIZE, | |
404 | .cra_ctxsize = sizeof(struct ppc_aes_ctx), | |
405 | .cra_alignmask = 0, | |
406 | .cra_module = THIS_MODULE, | |
407 | .cra_u = { | |
408 | .cipher = { | |
409 | .cia_min_keysize = AES_MIN_KEY_SIZE, | |
410 | .cia_max_keysize = AES_MAX_KEY_SIZE, | |
411 | .cia_setkey = ppc_aes_setkey, | |
412 | .cia_encrypt = ppc_aes_encrypt, | |
413 | .cia_decrypt = ppc_aes_decrypt | |
414 | } | |
415 | } | |
416 | }, { | |
417 | .cra_name = "ecb(aes)", | |
418 | .cra_driver_name = "ecb-ppc-spe", | |
419 | .cra_priority = 300, | |
420 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
421 | .cra_blocksize = AES_BLOCK_SIZE, | |
422 | .cra_ctxsize = sizeof(struct ppc_aes_ctx), | |
423 | .cra_alignmask = 0, | |
424 | .cra_type = &crypto_blkcipher_type, | |
425 | .cra_module = THIS_MODULE, | |
426 | .cra_u = { | |
427 | .blkcipher = { | |
428 | .min_keysize = AES_MIN_KEY_SIZE, | |
429 | .max_keysize = AES_MAX_KEY_SIZE, | |
430 | .ivsize = AES_BLOCK_SIZE, | |
431 | .setkey = ppc_aes_setkey, | |
432 | .encrypt = ppc_ecb_encrypt, | |
433 | .decrypt = ppc_ecb_decrypt, | |
434 | } | |
435 | } | |
436 | }, { | |
437 | .cra_name = "cbc(aes)", | |
438 | .cra_driver_name = "cbc-ppc-spe", | |
439 | .cra_priority = 300, | |
440 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
441 | .cra_blocksize = AES_BLOCK_SIZE, | |
442 | .cra_ctxsize = sizeof(struct ppc_aes_ctx), | |
443 | .cra_alignmask = 0, | |
444 | .cra_type = &crypto_blkcipher_type, | |
445 | .cra_module = THIS_MODULE, | |
446 | .cra_u = { | |
447 | .blkcipher = { | |
448 | .min_keysize = AES_MIN_KEY_SIZE, | |
449 | .max_keysize = AES_MAX_KEY_SIZE, | |
450 | .ivsize = AES_BLOCK_SIZE, | |
451 | .setkey = ppc_aes_setkey, | |
452 | .encrypt = ppc_cbc_encrypt, | |
453 | .decrypt = ppc_cbc_decrypt, | |
454 | } | |
455 | } | |
456 | }, { | |
457 | .cra_name = "ctr(aes)", | |
458 | .cra_driver_name = "ctr-ppc-spe", | |
459 | .cra_priority = 300, | |
460 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
461 | .cra_blocksize = 1, | |
462 | .cra_ctxsize = sizeof(struct ppc_aes_ctx), | |
463 | .cra_alignmask = 0, | |
464 | .cra_type = &crypto_blkcipher_type, | |
465 | .cra_module = THIS_MODULE, | |
466 | .cra_u = { | |
467 | .blkcipher = { | |
468 | .min_keysize = AES_MIN_KEY_SIZE, | |
469 | .max_keysize = AES_MAX_KEY_SIZE, | |
470 | .ivsize = AES_BLOCK_SIZE, | |
471 | .setkey = ppc_aes_setkey, | |
472 | .encrypt = ppc_ctr_crypt, | |
473 | .decrypt = ppc_ctr_crypt, | |
474 | } | |
475 | } | |
476 | }, { | |
477 | .cra_name = "xts(aes)", | |
478 | .cra_driver_name = "xts-ppc-spe", | |
479 | .cra_priority = 300, | |
480 | .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, | |
481 | .cra_blocksize = AES_BLOCK_SIZE, | |
482 | .cra_ctxsize = sizeof(struct ppc_xts_ctx), | |
483 | .cra_alignmask = 0, | |
484 | .cra_type = &crypto_blkcipher_type, | |
485 | .cra_module = THIS_MODULE, | |
486 | .cra_u = { | |
487 | .blkcipher = { | |
488 | .min_keysize = AES_MIN_KEY_SIZE * 2, | |
489 | .max_keysize = AES_MAX_KEY_SIZE * 2, | |
490 | .ivsize = AES_BLOCK_SIZE, | |
491 | .setkey = ppc_xts_setkey, | |
492 | .encrypt = ppc_xts_encrypt, | |
493 | .decrypt = ppc_xts_decrypt, | |
494 | } | |
495 | } | |
496 | } }; | |
497 | ||
498 | static int __init ppc_aes_mod_init(void) | |
499 | { | |
500 | return crypto_register_algs(aes_algs, ARRAY_SIZE(aes_algs)); | |
501 | } | |
502 | ||
503 | static void __exit ppc_aes_mod_fini(void) | |
504 | { | |
505 | crypto_unregister_algs(aes_algs, ARRAY_SIZE(aes_algs)); | |
506 | } | |
507 | ||
508 | module_init(ppc_aes_mod_init); | |
509 | module_exit(ppc_aes_mod_fini); | |
510 | ||
511 | MODULE_LICENSE("GPL"); | |
512 | MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS, SPE optimized"); | |
513 | ||
514 | MODULE_ALIAS_CRYPTO("aes"); | |
515 | MODULE_ALIAS_CRYPTO("ecb(aes)"); | |
516 | MODULE_ALIAS_CRYPTO("cbc(aes)"); | |
517 | MODULE_ALIAS_CRYPTO("ctr(aes)"); | |
518 | MODULE_ALIAS_CRYPTO("xts(aes)"); | |
519 | MODULE_ALIAS_CRYPTO("aes-ppc-spe"); |