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1b44c5a6 AT |
1 | /* |
2 | * Copyright (C) 2017 Marvell | |
3 | * | |
4 | * Antoine Tenart <antoine.tenart@free-electrons.com> | |
5 | * | |
6 | * This file is licensed under the terms of the GNU General Public | |
7 | * License version 2. This program is licensed "as is" without any | |
8 | * warranty of any kind, whether express or implied. | |
9 | */ | |
10 | ||
11 | #include <linux/device.h> | |
12 | #include <linux/dma-mapping.h> | |
13 | #include <linux/dmapool.h> | |
14 | ||
15 | #include <crypto/aes.h> | |
16 | #include <crypto/skcipher.h> | |
17 | ||
18 | #include "safexcel.h" | |
19 | ||
20 | enum safexcel_cipher_direction { | |
21 | SAFEXCEL_ENCRYPT, | |
22 | SAFEXCEL_DECRYPT, | |
23 | }; | |
24 | ||
25 | struct safexcel_cipher_ctx { | |
26 | struct safexcel_context base; | |
27 | struct safexcel_crypto_priv *priv; | |
28 | ||
29 | enum safexcel_cipher_direction direction; | |
30 | u32 mode; | |
31 | ||
32 | __le32 key[8]; | |
33 | unsigned int key_len; | |
34 | }; | |
35 | ||
36 | static void safexcel_cipher_token(struct safexcel_cipher_ctx *ctx, | |
37 | struct crypto_async_request *async, | |
38 | struct safexcel_command_desc *cdesc, | |
39 | u32 length) | |
40 | { | |
41 | struct skcipher_request *req = skcipher_request_cast(async); | |
42 | struct safexcel_token *token; | |
43 | unsigned offset = 0; | |
44 | ||
45 | if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) { | |
46 | offset = AES_BLOCK_SIZE / sizeof(u32); | |
47 | memcpy(cdesc->control_data.token, req->iv, AES_BLOCK_SIZE); | |
48 | ||
49 | cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD; | |
50 | } | |
51 | ||
52 | token = (struct safexcel_token *)(cdesc->control_data.token + offset); | |
53 | ||
54 | token[0].opcode = EIP197_TOKEN_OPCODE_DIRECTION; | |
55 | token[0].packet_length = length; | |
56 | token[0].stat = EIP197_TOKEN_STAT_LAST_PACKET; | |
57 | token[0].instructions = EIP197_TOKEN_INS_LAST | | |
58 | EIP197_TOKEN_INS_TYPE_CRYTO | | |
59 | EIP197_TOKEN_INS_TYPE_OUTPUT; | |
60 | } | |
61 | ||
62 | static int safexcel_aes_setkey(struct crypto_skcipher *ctfm, const u8 *key, | |
63 | unsigned int len) | |
64 | { | |
65 | struct crypto_tfm *tfm = crypto_skcipher_tfm(ctfm); | |
66 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); | |
67 | struct crypto_aes_ctx aes; | |
68 | int ret, i; | |
69 | ||
70 | ret = crypto_aes_expand_key(&aes, key, len); | |
71 | if (ret) { | |
72 | crypto_skcipher_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
73 | return ret; | |
74 | } | |
75 | ||
76 | for (i = 0; i < len / sizeof(u32); i++) { | |
77 | if (ctx->key[i] != cpu_to_le32(aes.key_enc[i])) { | |
78 | ctx->base.needs_inv = true; | |
79 | break; | |
80 | } | |
81 | } | |
82 | ||
83 | for (i = 0; i < len / sizeof(u32); i++) | |
84 | ctx->key[i] = cpu_to_le32(aes.key_enc[i]); | |
85 | ||
86 | ctx->key_len = len; | |
87 | ||
88 | memzero_explicit(&aes, sizeof(aes)); | |
89 | return 0; | |
90 | } | |
91 | ||
92 | static int safexcel_context_control(struct safexcel_cipher_ctx *ctx, | |
93 | struct safexcel_command_desc *cdesc) | |
94 | { | |
95 | struct safexcel_crypto_priv *priv = ctx->priv; | |
96 | int ctrl_size; | |
97 | ||
98 | if (ctx->direction == SAFEXCEL_ENCRYPT) | |
99 | cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_CRYPTO_OUT; | |
100 | else | |
101 | cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_CRYPTO_IN; | |
102 | ||
103 | cdesc->control_data.control0 |= CONTEXT_CONTROL_KEY_EN; | |
104 | cdesc->control_data.control1 |= ctx->mode; | |
105 | ||
106 | switch (ctx->key_len) { | |
107 | case AES_KEYSIZE_128: | |
108 | cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES128; | |
109 | ctrl_size = 4; | |
110 | break; | |
111 | case AES_KEYSIZE_192: | |
112 | cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES192; | |
113 | ctrl_size = 6; | |
114 | break; | |
115 | case AES_KEYSIZE_256: | |
116 | cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES256; | |
117 | ctrl_size = 8; | |
118 | break; | |
119 | default: | |
120 | dev_err(priv->dev, "aes keysize not supported: %u\n", | |
121 | ctx->key_len); | |
122 | return -EINVAL; | |
123 | } | |
124 | cdesc->control_data.control0 |= CONTEXT_CONTROL_SIZE(ctrl_size); | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring, | |
130 | struct crypto_async_request *async, | |
131 | bool *should_complete, int *ret) | |
132 | { | |
133 | struct skcipher_request *req = skcipher_request_cast(async); | |
134 | struct safexcel_result_desc *rdesc; | |
135 | int ndesc = 0; | |
136 | ||
137 | *ret = 0; | |
138 | ||
139 | spin_lock_bh(&priv->ring[ring].egress_lock); | |
140 | do { | |
141 | rdesc = safexcel_ring_next_rptr(priv, &priv->ring[ring].rdr); | |
142 | if (IS_ERR(rdesc)) { | |
143 | dev_err(priv->dev, | |
144 | "cipher: result: could not retrieve the result descriptor\n"); | |
145 | *ret = PTR_ERR(rdesc); | |
146 | break; | |
147 | } | |
148 | ||
149 | if (rdesc->result_data.error_code) { | |
150 | dev_err(priv->dev, | |
151 | "cipher: result: result descriptor error (%d)\n", | |
152 | rdesc->result_data.error_code); | |
153 | *ret = -EIO; | |
154 | } | |
155 | ||
156 | ndesc++; | |
157 | } while (!rdesc->last_seg); | |
158 | ||
159 | safexcel_complete(priv, ring); | |
160 | spin_unlock_bh(&priv->ring[ring].egress_lock); | |
161 | ||
162 | if (req->src == req->dst) { | |
163 | dma_unmap_sg(priv->dev, req->src, | |
164 | sg_nents_for_len(req->src, req->cryptlen), | |
165 | DMA_BIDIRECTIONAL); | |
166 | } else { | |
167 | dma_unmap_sg(priv->dev, req->src, | |
168 | sg_nents_for_len(req->src, req->cryptlen), | |
169 | DMA_TO_DEVICE); | |
170 | dma_unmap_sg(priv->dev, req->dst, | |
171 | sg_nents_for_len(req->dst, req->cryptlen), | |
172 | DMA_FROM_DEVICE); | |
173 | } | |
174 | ||
175 | *should_complete = true; | |
176 | ||
177 | return ndesc; | |
178 | } | |
179 | ||
180 | static int safexcel_aes_send(struct crypto_async_request *async, | |
181 | int ring, struct safexcel_request *request, | |
182 | int *commands, int *results) | |
183 | { | |
184 | struct skcipher_request *req = skcipher_request_cast(async); | |
185 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm); | |
186 | struct safexcel_crypto_priv *priv = ctx->priv; | |
187 | struct safexcel_command_desc *cdesc; | |
188 | struct safexcel_result_desc *rdesc; | |
189 | struct scatterlist *sg; | |
190 | int nr_src, nr_dst, n_cdesc = 0, n_rdesc = 0, queued = req->cryptlen; | |
191 | int i, ret = 0; | |
192 | ||
1b44c5a6 AT |
193 | if (req->src == req->dst) { |
194 | nr_src = dma_map_sg(priv->dev, req->src, | |
195 | sg_nents_for_len(req->src, req->cryptlen), | |
196 | DMA_BIDIRECTIONAL); | |
197 | nr_dst = nr_src; | |
198 | if (!nr_src) | |
199 | return -EINVAL; | |
200 | } else { | |
201 | nr_src = dma_map_sg(priv->dev, req->src, | |
202 | sg_nents_for_len(req->src, req->cryptlen), | |
203 | DMA_TO_DEVICE); | |
204 | if (!nr_src) | |
205 | return -EINVAL; | |
206 | ||
207 | nr_dst = dma_map_sg(priv->dev, req->dst, | |
208 | sg_nents_for_len(req->dst, req->cryptlen), | |
209 | DMA_FROM_DEVICE); | |
210 | if (!nr_dst) { | |
211 | dma_unmap_sg(priv->dev, req->src, | |
212 | sg_nents_for_len(req->src, req->cryptlen), | |
213 | DMA_TO_DEVICE); | |
214 | return -EINVAL; | |
215 | } | |
216 | } | |
217 | ||
218 | memcpy(ctx->base.ctxr->data, ctx->key, ctx->key_len); | |
219 | ||
220 | spin_lock_bh(&priv->ring[ring].egress_lock); | |
221 | ||
222 | /* command descriptors */ | |
223 | for_each_sg(req->src, sg, nr_src, i) { | |
224 | int len = sg_dma_len(sg); | |
225 | ||
226 | /* Do not overflow the request */ | |
227 | if (queued - len < 0) | |
228 | len = queued; | |
229 | ||
230 | cdesc = safexcel_add_cdesc(priv, ring, !n_cdesc, !(queued - len), | |
231 | sg_dma_address(sg), len, req->cryptlen, | |
232 | ctx->base.ctxr_dma); | |
233 | if (IS_ERR(cdesc)) { | |
234 | /* No space left in the command descriptor ring */ | |
235 | ret = PTR_ERR(cdesc); | |
236 | goto cdesc_rollback; | |
237 | } | |
238 | n_cdesc++; | |
239 | ||
240 | if (n_cdesc == 1) { | |
241 | safexcel_context_control(ctx, cdesc); | |
242 | safexcel_cipher_token(ctx, async, cdesc, req->cryptlen); | |
243 | } | |
244 | ||
245 | queued -= len; | |
246 | if (!queued) | |
247 | break; | |
248 | } | |
249 | ||
250 | /* result descriptors */ | |
251 | for_each_sg(req->dst, sg, nr_dst, i) { | |
252 | bool first = !i, last = (i == nr_dst - 1); | |
253 | u32 len = sg_dma_len(sg); | |
254 | ||
255 | rdesc = safexcel_add_rdesc(priv, ring, first, last, | |
256 | sg_dma_address(sg), len); | |
257 | if (IS_ERR(rdesc)) { | |
258 | /* No space left in the result descriptor ring */ | |
259 | ret = PTR_ERR(rdesc); | |
260 | goto rdesc_rollback; | |
261 | } | |
262 | n_rdesc++; | |
263 | } | |
264 | ||
1b44c5a6 AT |
265 | spin_unlock_bh(&priv->ring[ring].egress_lock); |
266 | ||
97858434 AT |
267 | request->req = &req->base; |
268 | ctx->base.handle_result = safexcel_handle_result; | |
269 | ||
1b44c5a6 | 270 | *commands = n_cdesc; |
152bdf4c | 271 | *results = n_rdesc; |
1b44c5a6 AT |
272 | return 0; |
273 | ||
274 | rdesc_rollback: | |
275 | for (i = 0; i < n_rdesc; i++) | |
276 | safexcel_ring_rollback_wptr(priv, &priv->ring[ring].rdr); | |
277 | cdesc_rollback: | |
278 | for (i = 0; i < n_cdesc; i++) | |
279 | safexcel_ring_rollback_wptr(priv, &priv->ring[ring].cdr); | |
280 | ||
281 | spin_unlock_bh(&priv->ring[ring].egress_lock); | |
282 | ||
283 | if (req->src == req->dst) { | |
284 | dma_unmap_sg(priv->dev, req->src, | |
285 | sg_nents_for_len(req->src, req->cryptlen), | |
286 | DMA_BIDIRECTIONAL); | |
287 | } else { | |
288 | dma_unmap_sg(priv->dev, req->src, | |
289 | sg_nents_for_len(req->src, req->cryptlen), | |
290 | DMA_TO_DEVICE); | |
291 | dma_unmap_sg(priv->dev, req->dst, | |
292 | sg_nents_for_len(req->dst, req->cryptlen), | |
293 | DMA_FROM_DEVICE); | |
294 | } | |
295 | ||
296 | return ret; | |
297 | } | |
298 | ||
299 | static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv, | |
300 | int ring, | |
301 | struct crypto_async_request *async, | |
302 | bool *should_complete, int *ret) | |
303 | { | |
304 | struct skcipher_request *req = skcipher_request_cast(async); | |
305 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm); | |
306 | struct safexcel_result_desc *rdesc; | |
307 | int ndesc = 0, enq_ret; | |
308 | ||
309 | *ret = 0; | |
310 | ||
311 | spin_lock_bh(&priv->ring[ring].egress_lock); | |
312 | do { | |
313 | rdesc = safexcel_ring_next_rptr(priv, &priv->ring[ring].rdr); | |
314 | if (IS_ERR(rdesc)) { | |
315 | dev_err(priv->dev, | |
316 | "cipher: invalidate: could not retrieve the result descriptor\n"); | |
317 | *ret = PTR_ERR(rdesc); | |
318 | break; | |
319 | } | |
320 | ||
321 | if (rdesc->result_data.error_code) { | |
322 | dev_err(priv->dev, "cipher: invalidate: result descriptor error (%d)\n", | |
323 | rdesc->result_data.error_code); | |
324 | *ret = -EIO; | |
325 | } | |
326 | ||
327 | ndesc++; | |
328 | } while (!rdesc->last_seg); | |
329 | ||
330 | safexcel_complete(priv, ring); | |
331 | spin_unlock_bh(&priv->ring[ring].egress_lock); | |
332 | ||
333 | if (ctx->base.exit_inv) { | |
334 | dma_pool_free(priv->context_pool, ctx->base.ctxr, | |
335 | ctx->base.ctxr_dma); | |
336 | ||
337 | *should_complete = true; | |
338 | ||
339 | return ndesc; | |
340 | } | |
341 | ||
86671abb AT |
342 | ring = safexcel_select_ring(priv); |
343 | ctx->base.ring = ring; | |
1b44c5a6 | 344 | ctx->base.needs_inv = false; |
1b44c5a6 AT |
345 | ctx->base.send = safexcel_aes_send; |
346 | ||
86671abb AT |
347 | spin_lock_bh(&priv->ring[ring].queue_lock); |
348 | enq_ret = crypto_enqueue_request(&priv->ring[ring].queue, async); | |
349 | spin_unlock_bh(&priv->ring[ring].queue_lock); | |
1b44c5a6 AT |
350 | |
351 | if (enq_ret != -EINPROGRESS) | |
352 | *ret = enq_ret; | |
353 | ||
86671abb AT |
354 | if (!priv->ring[ring].need_dequeue) |
355 | safexcel_dequeue(priv, ring); | |
356 | ||
1b44c5a6 AT |
357 | *should_complete = false; |
358 | ||
359 | return ndesc; | |
360 | } | |
361 | ||
362 | static int safexcel_cipher_send_inv(struct crypto_async_request *async, | |
363 | int ring, struct safexcel_request *request, | |
364 | int *commands, int *results) | |
365 | { | |
366 | struct skcipher_request *req = skcipher_request_cast(async); | |
367 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm); | |
368 | struct safexcel_crypto_priv *priv = ctx->priv; | |
369 | int ret; | |
370 | ||
371 | ctx->base.handle_result = safexcel_handle_inv_result; | |
372 | ||
373 | ret = safexcel_invalidate_cache(async, &ctx->base, priv, | |
374 | ctx->base.ctxr_dma, ring, request); | |
375 | if (unlikely(ret)) | |
376 | return ret; | |
377 | ||
378 | *commands = 1; | |
379 | *results = 1; | |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
384 | static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm) | |
385 | { | |
386 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); | |
387 | struct safexcel_crypto_priv *priv = ctx->priv; | |
388 | struct skcipher_request req; | |
389 | struct safexcel_inv_result result = { 0 }; | |
86671abb | 390 | int ring = ctx->base.ring; |
1b44c5a6 AT |
391 | |
392 | memset(&req, 0, sizeof(struct skcipher_request)); | |
393 | ||
394 | /* create invalidation request */ | |
395 | init_completion(&result.completion); | |
396 | skcipher_request_set_callback(&req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
397 | safexcel_inv_complete, &result); | |
398 | ||
399 | skcipher_request_set_tfm(&req, __crypto_skcipher_cast(tfm)); | |
400 | ctx = crypto_tfm_ctx(req.base.tfm); | |
401 | ctx->base.exit_inv = true; | |
402 | ctx->base.send = safexcel_cipher_send_inv; | |
403 | ||
86671abb AT |
404 | spin_lock_bh(&priv->ring[ring].queue_lock); |
405 | crypto_enqueue_request(&priv->ring[ring].queue, &req.base); | |
406 | spin_unlock_bh(&priv->ring[ring].queue_lock); | |
1b44c5a6 | 407 | |
86671abb AT |
408 | if (!priv->ring[ring].need_dequeue) |
409 | safexcel_dequeue(priv, ring); | |
1b44c5a6 AT |
410 | |
411 | wait_for_completion_interruptible(&result.completion); | |
412 | ||
413 | if (result.error) { | |
414 | dev_warn(priv->dev, | |
415 | "cipher: sync: invalidate: completion error %d\n", | |
416 | result.error); | |
417 | return result.error; | |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
423 | static int safexcel_aes(struct skcipher_request *req, | |
424 | enum safexcel_cipher_direction dir, u32 mode) | |
425 | { | |
426 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm); | |
427 | struct safexcel_crypto_priv *priv = ctx->priv; | |
86671abb | 428 | int ret, ring; |
1b44c5a6 AT |
429 | |
430 | ctx->direction = dir; | |
431 | ctx->mode = mode; | |
432 | ||
433 | if (ctx->base.ctxr) { | |
434 | if (ctx->base.needs_inv) | |
435 | ctx->base.send = safexcel_cipher_send_inv; | |
436 | } else { | |
437 | ctx->base.ring = safexcel_select_ring(priv); | |
438 | ctx->base.send = safexcel_aes_send; | |
439 | ||
440 | ctx->base.ctxr = dma_pool_zalloc(priv->context_pool, | |
441 | EIP197_GFP_FLAGS(req->base), | |
442 | &ctx->base.ctxr_dma); | |
443 | if (!ctx->base.ctxr) | |
444 | return -ENOMEM; | |
445 | } | |
446 | ||
86671abb AT |
447 | ring = ctx->base.ring; |
448 | ||
449 | spin_lock_bh(&priv->ring[ring].queue_lock); | |
450 | ret = crypto_enqueue_request(&priv->ring[ring].queue, &req->base); | |
451 | spin_unlock_bh(&priv->ring[ring].queue_lock); | |
1b44c5a6 | 452 | |
86671abb AT |
453 | if (!priv->ring[ring].need_dequeue) |
454 | safexcel_dequeue(priv, ring); | |
1b44c5a6 AT |
455 | |
456 | return ret; | |
457 | } | |
458 | ||
459 | static int safexcel_ecb_aes_encrypt(struct skcipher_request *req) | |
460 | { | |
461 | return safexcel_aes(req, SAFEXCEL_ENCRYPT, | |
462 | CONTEXT_CONTROL_CRYPTO_MODE_ECB); | |
463 | } | |
464 | ||
465 | static int safexcel_ecb_aes_decrypt(struct skcipher_request *req) | |
466 | { | |
467 | return safexcel_aes(req, SAFEXCEL_DECRYPT, | |
468 | CONTEXT_CONTROL_CRYPTO_MODE_ECB); | |
469 | } | |
470 | ||
471 | static int safexcel_skcipher_cra_init(struct crypto_tfm *tfm) | |
472 | { | |
473 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); | |
474 | struct safexcel_alg_template *tmpl = | |
475 | container_of(tfm->__crt_alg, struct safexcel_alg_template, | |
476 | alg.skcipher.base); | |
477 | ||
478 | ctx->priv = tmpl->priv; | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | static void safexcel_skcipher_cra_exit(struct crypto_tfm *tfm) | |
484 | { | |
485 | struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); | |
486 | struct safexcel_crypto_priv *priv = ctx->priv; | |
487 | int ret; | |
488 | ||
489 | memzero_explicit(ctx->key, 8 * sizeof(u32)); | |
490 | ||
491 | /* context not allocated, skip invalidation */ | |
492 | if (!ctx->base.ctxr) | |
493 | return; | |
494 | ||
495 | memzero_explicit(ctx->base.ctxr->data, 8 * sizeof(u32)); | |
496 | ||
497 | ret = safexcel_cipher_exit_inv(tfm); | |
498 | if (ret) | |
499 | dev_warn(priv->dev, "cipher: invalidation error %d\n", ret); | |
500 | } | |
501 | ||
502 | struct safexcel_alg_template safexcel_alg_ecb_aes = { | |
503 | .type = SAFEXCEL_ALG_TYPE_SKCIPHER, | |
504 | .alg.skcipher = { | |
505 | .setkey = safexcel_aes_setkey, | |
506 | .encrypt = safexcel_ecb_aes_encrypt, | |
507 | .decrypt = safexcel_ecb_aes_decrypt, | |
508 | .min_keysize = AES_MIN_KEY_SIZE, | |
509 | .max_keysize = AES_MAX_KEY_SIZE, | |
510 | .base = { | |
511 | .cra_name = "ecb(aes)", | |
512 | .cra_driver_name = "safexcel-ecb-aes", | |
513 | .cra_priority = 300, | |
514 | .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC | | |
515 | CRYPTO_ALG_KERN_DRIVER_ONLY, | |
516 | .cra_blocksize = AES_BLOCK_SIZE, | |
517 | .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), | |
518 | .cra_alignmask = 0, | |
519 | .cra_init = safexcel_skcipher_cra_init, | |
520 | .cra_exit = safexcel_skcipher_cra_exit, | |
521 | .cra_module = THIS_MODULE, | |
522 | }, | |
523 | }, | |
524 | }; | |
525 | ||
526 | static int safexcel_cbc_aes_encrypt(struct skcipher_request *req) | |
527 | { | |
528 | return safexcel_aes(req, SAFEXCEL_ENCRYPT, | |
529 | CONTEXT_CONTROL_CRYPTO_MODE_CBC); | |
530 | } | |
531 | ||
532 | static int safexcel_cbc_aes_decrypt(struct skcipher_request *req) | |
533 | { | |
534 | return safexcel_aes(req, SAFEXCEL_DECRYPT, | |
535 | CONTEXT_CONTROL_CRYPTO_MODE_CBC); | |
536 | } | |
537 | ||
538 | struct safexcel_alg_template safexcel_alg_cbc_aes = { | |
539 | .type = SAFEXCEL_ALG_TYPE_SKCIPHER, | |
540 | .alg.skcipher = { | |
541 | .setkey = safexcel_aes_setkey, | |
542 | .encrypt = safexcel_cbc_aes_encrypt, | |
543 | .decrypt = safexcel_cbc_aes_decrypt, | |
544 | .min_keysize = AES_MIN_KEY_SIZE, | |
545 | .max_keysize = AES_MAX_KEY_SIZE, | |
546 | .ivsize = AES_BLOCK_SIZE, | |
547 | .base = { | |
548 | .cra_name = "cbc(aes)", | |
549 | .cra_driver_name = "safexcel-cbc-aes", | |
550 | .cra_priority = 300, | |
551 | .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC | | |
552 | CRYPTO_ALG_KERN_DRIVER_ONLY, | |
553 | .cra_blocksize = AES_BLOCK_SIZE, | |
554 | .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), | |
555 | .cra_alignmask = 0, | |
556 | .cra_init = safexcel_skcipher_cra_init, | |
557 | .cra_exit = safexcel_skcipher_cra_exit, | |
558 | .cra_module = THIS_MODULE, | |
559 | }, | |
560 | }, | |
561 | }; |