1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Glue code for AES implementation for SPE instructions (PPC) |
4 | * |
5 | * Based on generic implementation. The assembler module takes care |
6 | * about the SPE registers so it can run from interrupt context. |
7 | * |
8 | * Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de> |
9 | */ |
10 | |
11 | #include <crypto/aes.h> |
12 | #include <linux/module.h> |
13 | #include <linux/init.h> |
14 | #include <linux/types.h> |
15 | #include <linux/errno.h> |
16 | #include <linux/crypto.h> |
17 | #include <asm/byteorder.h> |
18 | #include <asm/switch_to.h> |
19 | #include <crypto/algapi.h> |
20 | #include <crypto/internal/skcipher.h> |
21 | #include <crypto/xts.h> |
22 | #include <crypto/gf128mul.h> |
23 | #include <crypto/scatterwalk.h> |
24 | |
25 | /* |
26 | * MAX_BYTES defines the number of bytes that are allowed to be processed |
27 | * between preempt_disable() and preempt_enable(). e500 cores can issue two |
28 | * instructions per clock cycle using one 32/64 bit unit (SU1) and one 32 |
29 | * bit unit (SU2). One of these can be a memory access that is executed via |
30 | * a single load and store unit (LSU). XTS-AES-256 takes ~780 operations per |
31 | * 16 byte block or 25 cycles per byte. Thus 768 bytes of input data |
32 | * will need an estimated maximum of 20,000 cycles. Headroom for cache misses |
33 | * included. Even with the low end model clocked at 667 MHz this equals to a |
34 | * critical time window of less than 30us. The value has been chosen to |
35 | * process a 512 byte disk block in one or a large 1400 bytes IPsec network |
36 | * packet in two runs. |
37 | * |
38 | */ |
39 | #define MAX_BYTES 768 |
40 | |
41 | struct ppc_aes_ctx { |
42 | u32 key_enc[AES_MAX_KEYLENGTH_U32]; |
43 | u32 key_dec[AES_MAX_KEYLENGTH_U32]; |
44 | u32 rounds; |
45 | }; |
46 | |
47 | struct ppc_xts_ctx { |
48 | u32 key_enc[AES_MAX_KEYLENGTH_U32]; |
49 | u32 key_dec[AES_MAX_KEYLENGTH_U32]; |
50 | u32 key_twk[AES_MAX_KEYLENGTH_U32]; |
51 | u32 rounds; |
52 | }; |
53 | |
54 | extern void ppc_encrypt_aes(u8 *out, const u8 *in, u32 *key_enc, u32 rounds); |
55 | extern void ppc_decrypt_aes(u8 *out, const u8 *in, u32 *key_dec, u32 rounds); |
56 | extern void ppc_encrypt_ecb(u8 *out, const u8 *in, u32 *key_enc, u32 rounds, |
57 | u32 bytes); |
58 | extern void ppc_decrypt_ecb(u8 *out, const u8 *in, u32 *key_dec, u32 rounds, |
59 | u32 bytes); |
60 | extern void ppc_encrypt_cbc(u8 *out, const u8 *in, u32 *key_enc, u32 rounds, |
61 | u32 bytes, u8 *iv); |
62 | extern void ppc_decrypt_cbc(u8 *out, const u8 *in, u32 *key_dec, u32 rounds, |
63 | u32 bytes, u8 *iv); |
64 | extern void ppc_crypt_ctr (u8 *out, const u8 *in, u32 *key_enc, u32 rounds, |
65 | u32 bytes, u8 *iv); |
66 | extern void ppc_encrypt_xts(u8 *out, const u8 *in, u32 *key_enc, u32 rounds, |
67 | u32 bytes, u8 *iv, u32 *key_twk); |
68 | extern void ppc_decrypt_xts(u8 *out, const u8 *in, u32 *key_dec, u32 rounds, |
69 | u32 bytes, u8 *iv, u32 *key_twk); |
70 | |
71 | extern void ppc_expand_key_128(u32 *key_enc, const u8 *key); |
72 | extern void ppc_expand_key_192(u32 *key_enc, const u8 *key); |
73 | extern void ppc_expand_key_256(u32 *key_enc, const u8 *key); |
74 | |
75 | extern void ppc_generate_decrypt_key(u32 *key_dec,u32 *key_enc, |
76 | unsigned int key_len); |
77 | |
78 | static void spe_begin(void) |
79 | { |
80 | /* disable preemption and save users SPE registers if required */ |
81 | preempt_disable(); |
82 | enable_kernel_spe(); |
83 | } |
84 | |
85 | static void spe_end(void) |
86 | { |
87 | disable_kernel_spe(); |
88 | /* reenable preemption */ |
89 | preempt_enable(); |
90 | } |
91 | |
92 | static int ppc_aes_setkey(struct crypto_tfm *tfm, const u8 *in_key, |
93 | unsigned int key_len) |
94 | { |
95 | struct ppc_aes_ctx *ctx = crypto_tfm_ctx(tfm); |
96 | |
97 | switch (key_len) { |
98 | case AES_KEYSIZE_128: |
99 | ctx->rounds = 4; |
100 | ppc_expand_key_128(key_enc: ctx->key_enc, key: in_key); |
101 | break; |
102 | case AES_KEYSIZE_192: |
103 | ctx->rounds = 5; |
104 | ppc_expand_key_192(key_enc: ctx->key_enc, key: in_key); |
105 | break; |
106 | case AES_KEYSIZE_256: |
107 | ctx->rounds = 6; |
108 | ppc_expand_key_256(key_enc: ctx->key_enc, key: in_key); |
109 | break; |
110 | default: |
111 | return -EINVAL; |
112 | } |
113 | |
114 | ppc_generate_decrypt_key(key_dec: ctx->key_dec, key_enc: ctx->key_enc, key_len); |
115 | |
116 | return 0; |
117 | } |
118 | |
119 | static int ppc_aes_setkey_skcipher(struct crypto_skcipher *tfm, |
120 | const u8 *in_key, unsigned int key_len) |
121 | { |
122 | return ppc_aes_setkey(tfm: crypto_skcipher_tfm(tfm), in_key, key_len); |
123 | } |
124 | |
125 | static int ppc_xts_setkey(struct crypto_skcipher *tfm, const u8 *in_key, |
126 | unsigned int key_len) |
127 | { |
128 | struct ppc_xts_ctx *ctx = crypto_skcipher_ctx(tfm); |
129 | int err; |
130 | |
131 | err = xts_verify_key(tfm, key: in_key, keylen: key_len); |
132 | if (err) |
133 | return err; |
134 | |
135 | key_len >>= 1; |
136 | |
137 | switch (key_len) { |
138 | case AES_KEYSIZE_128: |
139 | ctx->rounds = 4; |
140 | ppc_expand_key_128(key_enc: ctx->key_enc, key: in_key); |
141 | ppc_expand_key_128(key_enc: ctx->key_twk, key: in_key + AES_KEYSIZE_128); |
142 | break; |
143 | case AES_KEYSIZE_192: |
144 | ctx->rounds = 5; |
145 | ppc_expand_key_192(key_enc: ctx->key_enc, key: in_key); |
146 | ppc_expand_key_192(key_enc: ctx->key_twk, key: in_key + AES_KEYSIZE_192); |
147 | break; |
148 | case AES_KEYSIZE_256: |
149 | ctx->rounds = 6; |
150 | ppc_expand_key_256(key_enc: ctx->key_enc, key: in_key); |
151 | ppc_expand_key_256(key_enc: ctx->key_twk, key: in_key + AES_KEYSIZE_256); |
152 | break; |
153 | default: |
154 | return -EINVAL; |
155 | } |
156 | |
157 | ppc_generate_decrypt_key(key_dec: ctx->key_dec, key_enc: ctx->key_enc, key_len); |
158 | |
159 | return 0; |
160 | } |
161 | |
162 | static void ppc_aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) |
163 | { |
164 | struct ppc_aes_ctx *ctx = crypto_tfm_ctx(tfm); |
165 | |
166 | spe_begin(); |
167 | ppc_encrypt_aes(out, in, key_enc: ctx->key_enc, rounds: ctx->rounds); |
168 | spe_end(); |
169 | } |
170 | |
171 | static void ppc_aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in) |
172 | { |
173 | struct ppc_aes_ctx *ctx = crypto_tfm_ctx(tfm); |
174 | |
175 | spe_begin(); |
176 | ppc_decrypt_aes(out, in, key_dec: ctx->key_dec, rounds: ctx->rounds); |
177 | spe_end(); |
178 | } |
179 | |
180 | static int ppc_ecb_crypt(struct skcipher_request *req, bool enc) |
181 | { |
182 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
183 | struct ppc_aes_ctx *ctx = crypto_skcipher_ctx(tfm); |
184 | struct skcipher_walk walk; |
185 | unsigned int nbytes; |
186 | int err; |
187 | |
188 | err = skcipher_walk_virt(walk: &walk, req, atomic: false); |
189 | |
190 | while ((nbytes = walk.nbytes) != 0) { |
191 | nbytes = min_t(unsigned int, nbytes, MAX_BYTES); |
192 | nbytes = round_down(nbytes, AES_BLOCK_SIZE); |
193 | |
194 | spe_begin(); |
195 | if (enc) |
196 | ppc_encrypt_ecb(out: walk.dst.virt.addr, in: walk.src.virt.addr, |
197 | key_enc: ctx->key_enc, rounds: ctx->rounds, bytes: nbytes); |
198 | else |
199 | ppc_decrypt_ecb(out: walk.dst.virt.addr, in: walk.src.virt.addr, |
200 | key_dec: ctx->key_dec, rounds: ctx->rounds, bytes: nbytes); |
201 | spe_end(); |
202 | |
203 | err = skcipher_walk_done(walk: &walk, err: walk.nbytes - nbytes); |
204 | } |
205 | |
206 | return err; |
207 | } |
208 | |
209 | static int ppc_ecb_encrypt(struct skcipher_request *req) |
210 | { |
211 | return ppc_ecb_crypt(req, enc: true); |
212 | } |
213 | |
214 | static int ppc_ecb_decrypt(struct skcipher_request *req) |
215 | { |
216 | return ppc_ecb_crypt(req, enc: false); |
217 | } |
218 | |
219 | static int ppc_cbc_crypt(struct skcipher_request *req, bool enc) |
220 | { |
221 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
222 | struct ppc_aes_ctx *ctx = crypto_skcipher_ctx(tfm); |
223 | struct skcipher_walk walk; |
224 | unsigned int nbytes; |
225 | int err; |
226 | |
227 | err = skcipher_walk_virt(walk: &walk, req, atomic: false); |
228 | |
229 | while ((nbytes = walk.nbytes) != 0) { |
230 | nbytes = min_t(unsigned int, nbytes, MAX_BYTES); |
231 | nbytes = round_down(nbytes, AES_BLOCK_SIZE); |
232 | |
233 | spe_begin(); |
234 | if (enc) |
235 | ppc_encrypt_cbc(out: walk.dst.virt.addr, in: walk.src.virt.addr, |
236 | key_enc: ctx->key_enc, rounds: ctx->rounds, bytes: nbytes, |
237 | iv: walk.iv); |
238 | else |
239 | ppc_decrypt_cbc(out: walk.dst.virt.addr, in: walk.src.virt.addr, |
240 | key_dec: ctx->key_dec, rounds: ctx->rounds, bytes: nbytes, |
241 | iv: walk.iv); |
242 | spe_end(); |
243 | |
244 | err = skcipher_walk_done(walk: &walk, err: walk.nbytes - nbytes); |
245 | } |
246 | |
247 | return err; |
248 | } |
249 | |
250 | static int ppc_cbc_encrypt(struct skcipher_request *req) |
251 | { |
252 | return ppc_cbc_crypt(req, enc: true); |
253 | } |
254 | |
255 | static int ppc_cbc_decrypt(struct skcipher_request *req) |
256 | { |
257 | return ppc_cbc_crypt(req, enc: false); |
258 | } |
259 | |
260 | static int ppc_ctr_crypt(struct skcipher_request *req) |
261 | { |
262 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
263 | struct ppc_aes_ctx *ctx = crypto_skcipher_ctx(tfm); |
264 | struct skcipher_walk walk; |
265 | unsigned int nbytes; |
266 | int err; |
267 | |
268 | err = skcipher_walk_virt(walk: &walk, req, atomic: false); |
269 | |
270 | while ((nbytes = walk.nbytes) != 0) { |
271 | nbytes = min_t(unsigned int, nbytes, MAX_BYTES); |
272 | if (nbytes < walk.total) |
273 | nbytes = round_down(nbytes, AES_BLOCK_SIZE); |
274 | |
275 | spe_begin(); |
276 | ppc_crypt_ctr(out: walk.dst.virt.addr, in: walk.src.virt.addr, |
277 | key_enc: ctx->key_enc, rounds: ctx->rounds, bytes: nbytes, iv: walk.iv); |
278 | spe_end(); |
279 | |
280 | err = skcipher_walk_done(walk: &walk, err: walk.nbytes - nbytes); |
281 | } |
282 | |
283 | return err; |
284 | } |
285 | |
286 | static int ppc_xts_crypt(struct skcipher_request *req, bool enc) |
287 | { |
288 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
289 | struct ppc_xts_ctx *ctx = crypto_skcipher_ctx(tfm); |
290 | struct skcipher_walk walk; |
291 | unsigned int nbytes; |
292 | int err; |
293 | u32 *twk; |
294 | |
295 | err = skcipher_walk_virt(walk: &walk, req, atomic: false); |
296 | twk = ctx->key_twk; |
297 | |
298 | while ((nbytes = walk.nbytes) != 0) { |
299 | nbytes = min_t(unsigned int, nbytes, MAX_BYTES); |
300 | nbytes = round_down(nbytes, AES_BLOCK_SIZE); |
301 | |
302 | spe_begin(); |
303 | if (enc) |
304 | ppc_encrypt_xts(out: walk.dst.virt.addr, in: walk.src.virt.addr, |
305 | key_enc: ctx->key_enc, rounds: ctx->rounds, bytes: nbytes, |
306 | iv: walk.iv, key_twk: twk); |
307 | else |
308 | ppc_decrypt_xts(out: walk.dst.virt.addr, in: walk.src.virt.addr, |
309 | key_dec: ctx->key_dec, rounds: ctx->rounds, bytes: nbytes, |
310 | iv: walk.iv, key_twk: twk); |
311 | spe_end(); |
312 | |
313 | twk = NULL; |
314 | err = skcipher_walk_done(walk: &walk, err: walk.nbytes - nbytes); |
315 | } |
316 | |
317 | return err; |
318 | } |
319 | |
320 | static int ppc_xts_encrypt(struct skcipher_request *req) |
321 | { |
322 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
323 | struct ppc_xts_ctx *ctx = crypto_skcipher_ctx(tfm); |
324 | int tail = req->cryptlen % AES_BLOCK_SIZE; |
325 | int offset = req->cryptlen - tail - AES_BLOCK_SIZE; |
326 | struct skcipher_request subreq; |
327 | u8 b[2][AES_BLOCK_SIZE]; |
328 | int err; |
329 | |
330 | if (req->cryptlen < AES_BLOCK_SIZE) |
331 | return -EINVAL; |
332 | |
333 | if (tail) { |
334 | subreq = *req; |
335 | skcipher_request_set_crypt(req: &subreq, src: req->src, dst: req->dst, |
336 | cryptlen: req->cryptlen - tail, iv: req->iv); |
337 | req = &subreq; |
338 | } |
339 | |
340 | err = ppc_xts_crypt(req, enc: true); |
341 | if (err || !tail) |
342 | return err; |
343 | |
344 | scatterwalk_map_and_copy(buf: b[0], sg: req->dst, start: offset, AES_BLOCK_SIZE, out: 0); |
345 | memcpy(b[1], b[0], tail); |
346 | scatterwalk_map_and_copy(buf: b[0], sg: req->src, start: offset + AES_BLOCK_SIZE, nbytes: tail, out: 0); |
347 | |
348 | spe_begin(); |
349 | ppc_encrypt_xts(out: b[0], in: b[0], key_enc: ctx->key_enc, rounds: ctx->rounds, AES_BLOCK_SIZE, |
350 | iv: req->iv, NULL); |
351 | spe_end(); |
352 | |
353 | scatterwalk_map_and_copy(buf: b[0], sg: req->dst, start: offset, AES_BLOCK_SIZE + tail, out: 1); |
354 | |
355 | return 0; |
356 | } |
357 | |
358 | static int ppc_xts_decrypt(struct skcipher_request *req) |
359 | { |
360 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
361 | struct ppc_xts_ctx *ctx = crypto_skcipher_ctx(tfm); |
362 | int tail = req->cryptlen % AES_BLOCK_SIZE; |
363 | int offset = req->cryptlen - tail - AES_BLOCK_SIZE; |
364 | struct skcipher_request subreq; |
365 | u8 b[3][AES_BLOCK_SIZE]; |
366 | le128 twk; |
367 | int err; |
368 | |
369 | if (req->cryptlen < AES_BLOCK_SIZE) |
370 | return -EINVAL; |
371 | |
372 | if (tail) { |
373 | subreq = *req; |
374 | skcipher_request_set_crypt(req: &subreq, src: req->src, dst: req->dst, |
375 | cryptlen: offset, iv: req->iv); |
376 | req = &subreq; |
377 | } |
378 | |
379 | err = ppc_xts_crypt(req, enc: false); |
380 | if (err || !tail) |
381 | return err; |
382 | |
383 | scatterwalk_map_and_copy(buf: b[1], sg: req->src, start: offset, AES_BLOCK_SIZE + tail, out: 0); |
384 | |
385 | spe_begin(); |
386 | if (!offset) |
387 | ppc_encrypt_ecb(out: req->iv, in: req->iv, key_enc: ctx->key_twk, rounds: ctx->rounds, |
388 | AES_BLOCK_SIZE); |
389 | |
390 | gf128mul_x_ble(r: &twk, x: (le128 *)req->iv); |
391 | |
392 | ppc_decrypt_xts(out: b[1], in: b[1], key_dec: ctx->key_dec, rounds: ctx->rounds, AES_BLOCK_SIZE, |
393 | iv: (u8 *)&twk, NULL); |
394 | memcpy(b[0], b[2], tail); |
395 | memcpy(b[0] + tail, b[1] + tail, AES_BLOCK_SIZE - tail); |
396 | ppc_decrypt_xts(out: b[0], in: b[0], key_dec: ctx->key_dec, rounds: ctx->rounds, AES_BLOCK_SIZE, |
397 | iv: req->iv, NULL); |
398 | spe_end(); |
399 | |
400 | scatterwalk_map_and_copy(buf: b[0], sg: req->dst, start: offset, AES_BLOCK_SIZE + tail, out: 1); |
401 | |
402 | return 0; |
403 | } |
404 | |
405 | /* |
406 | * Algorithm definitions. Disabling alignment (cra_alignmask=0) was chosen |
407 | * because the e500 platform can handle unaligned reads/writes very efficiently. |
408 | * This improves IPsec thoughput by another few percent. Additionally we assume |
409 | * that AES context is always aligned to at least 8 bytes because it is created |
410 | * with kmalloc() in the crypto infrastructure |
411 | */ |
412 | |
413 | static struct crypto_alg aes_cipher_alg = { |
414 | .cra_name = "aes" , |
415 | .cra_driver_name = "aes-ppc-spe" , |
416 | .cra_priority = 300, |
417 | .cra_flags = CRYPTO_ALG_TYPE_CIPHER, |
418 | .cra_blocksize = AES_BLOCK_SIZE, |
419 | .cra_ctxsize = sizeof(struct ppc_aes_ctx), |
420 | .cra_alignmask = 0, |
421 | .cra_module = THIS_MODULE, |
422 | .cra_u = { |
423 | .cipher = { |
424 | .cia_min_keysize = AES_MIN_KEY_SIZE, |
425 | .cia_max_keysize = AES_MAX_KEY_SIZE, |
426 | .cia_setkey = ppc_aes_setkey, |
427 | .cia_encrypt = ppc_aes_encrypt, |
428 | .cia_decrypt = ppc_aes_decrypt |
429 | } |
430 | } |
431 | }; |
432 | |
433 | static struct skcipher_alg aes_skcipher_algs[] = { |
434 | { |
435 | .base.cra_name = "ecb(aes)" , |
436 | .base.cra_driver_name = "ecb-ppc-spe" , |
437 | .base.cra_priority = 300, |
438 | .base.cra_blocksize = AES_BLOCK_SIZE, |
439 | .base.cra_ctxsize = sizeof(struct ppc_aes_ctx), |
440 | .base.cra_module = THIS_MODULE, |
441 | .min_keysize = AES_MIN_KEY_SIZE, |
442 | .max_keysize = AES_MAX_KEY_SIZE, |
443 | .setkey = ppc_aes_setkey_skcipher, |
444 | .encrypt = ppc_ecb_encrypt, |
445 | .decrypt = ppc_ecb_decrypt, |
446 | }, { |
447 | .base.cra_name = "cbc(aes)" , |
448 | .base.cra_driver_name = "cbc-ppc-spe" , |
449 | .base.cra_priority = 300, |
450 | .base.cra_blocksize = AES_BLOCK_SIZE, |
451 | .base.cra_ctxsize = sizeof(struct ppc_aes_ctx), |
452 | .base.cra_module = THIS_MODULE, |
453 | .min_keysize = AES_MIN_KEY_SIZE, |
454 | .max_keysize = AES_MAX_KEY_SIZE, |
455 | .ivsize = AES_BLOCK_SIZE, |
456 | .setkey = ppc_aes_setkey_skcipher, |
457 | .encrypt = ppc_cbc_encrypt, |
458 | .decrypt = ppc_cbc_decrypt, |
459 | }, { |
460 | .base.cra_name = "ctr(aes)" , |
461 | .base.cra_driver_name = "ctr-ppc-spe" , |
462 | .base.cra_priority = 300, |
463 | .base.cra_blocksize = 1, |
464 | .base.cra_ctxsize = sizeof(struct ppc_aes_ctx), |
465 | .base.cra_module = THIS_MODULE, |
466 | .min_keysize = AES_MIN_KEY_SIZE, |
467 | .max_keysize = AES_MAX_KEY_SIZE, |
468 | .ivsize = AES_BLOCK_SIZE, |
469 | .setkey = ppc_aes_setkey_skcipher, |
470 | .encrypt = ppc_ctr_crypt, |
471 | .decrypt = ppc_ctr_crypt, |
472 | .chunksize = AES_BLOCK_SIZE, |
473 | }, { |
474 | .base.cra_name = "xts(aes)" , |
475 | .base.cra_driver_name = "xts-ppc-spe" , |
476 | .base.cra_priority = 300, |
477 | .base.cra_blocksize = AES_BLOCK_SIZE, |
478 | .base.cra_ctxsize = sizeof(struct ppc_xts_ctx), |
479 | .base.cra_module = THIS_MODULE, |
480 | .min_keysize = AES_MIN_KEY_SIZE * 2, |
481 | .max_keysize = AES_MAX_KEY_SIZE * 2, |
482 | .ivsize = AES_BLOCK_SIZE, |
483 | .setkey = ppc_xts_setkey, |
484 | .encrypt = ppc_xts_encrypt, |
485 | .decrypt = ppc_xts_decrypt, |
486 | } |
487 | }; |
488 | |
489 | static int __init ppc_aes_mod_init(void) |
490 | { |
491 | int err; |
492 | |
493 | err = crypto_register_alg(alg: &aes_cipher_alg); |
494 | if (err) |
495 | return err; |
496 | |
497 | err = crypto_register_skciphers(algs: aes_skcipher_algs, |
498 | ARRAY_SIZE(aes_skcipher_algs)); |
499 | if (err) |
500 | crypto_unregister_alg(alg: &aes_cipher_alg); |
501 | return err; |
502 | } |
503 | |
504 | static void __exit ppc_aes_mod_fini(void) |
505 | { |
506 | crypto_unregister_alg(alg: &aes_cipher_alg); |
507 | crypto_unregister_skciphers(algs: aes_skcipher_algs, |
508 | ARRAY_SIZE(aes_skcipher_algs)); |
509 | } |
510 | |
511 | module_init(ppc_aes_mod_init); |
512 | module_exit(ppc_aes_mod_fini); |
513 | |
514 | MODULE_LICENSE("GPL" ); |
515 | MODULE_DESCRIPTION("AES-ECB/CBC/CTR/XTS, SPE optimized" ); |
516 | |
517 | MODULE_ALIAS_CRYPTO("aes" ); |
518 | MODULE_ALIAS_CRYPTO("ecb(aes)" ); |
519 | MODULE_ALIAS_CRYPTO("cbc(aes)" ); |
520 | MODULE_ALIAS_CRYPTO("ctr(aes)" ); |
521 | MODULE_ALIAS_CRYPTO("xts(aes)" ); |
522 | MODULE_ALIAS_CRYPTO("aes-ppc-spe" ); |
523 | |