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20#include <linux/kernel.h>
21#include <linux/interrupt.h>
22#include <linux/spinlock_types.h>
23#include <linux/scatterlist.h>
24#include <linux/crypto.h>
25#include <linux/hash.h>
26#include <crypto/internal/hash.h>
27#include <linux/dma-mapping.h>
28#include <crypto/algapi.h>
29#include <crypto/aead.h>
30#include <crypto/aes.h>
31#include <crypto/gcm.h>
32#include <crypto/sha.h>
33#include <crypto/ctr.h>
34#include "crypto4xx_reg_def.h"
35#include "crypto4xx_core.h"
36#include "crypto4xx_sa.h"
37
38static void set_dynamic_sa_command_0(struct dynamic_sa_ctl *sa, u32 save_h,
39 u32 save_iv, u32 ld_h, u32 ld_iv,
40 u32 hdr_proc, u32 h, u32 c, u32 pad_type,
41 u32 op_grp, u32 op, u32 dir)
42{
43 sa->sa_command_0.w = 0;
44 sa->sa_command_0.bf.save_hash_state = save_h;
45 sa->sa_command_0.bf.save_iv = save_iv;
46 sa->sa_command_0.bf.load_hash_state = ld_h;
47 sa->sa_command_0.bf.load_iv = ld_iv;
48 sa->sa_command_0.bf.hdr_proc = hdr_proc;
49 sa->sa_command_0.bf.hash_alg = h;
50 sa->sa_command_0.bf.cipher_alg = c;
51 sa->sa_command_0.bf.pad_type = pad_type & 3;
52 sa->sa_command_0.bf.extend_pad = pad_type >> 2;
53 sa->sa_command_0.bf.op_group = op_grp;
54 sa->sa_command_0.bf.opcode = op;
55 sa->sa_command_0.bf.dir = dir;
56}
57
58static void set_dynamic_sa_command_1(struct dynamic_sa_ctl *sa, u32 cm,
59 u32 hmac_mc, u32 cfb, u32 esn,
60 u32 sn_mask, u32 mute, u32 cp_pad,
61 u32 cp_pay, u32 cp_hdr)
62{
63 sa->sa_command_1.w = 0;
64 sa->sa_command_1.bf.crypto_mode31 = (cm & 4) >> 2;
65 sa->sa_command_1.bf.crypto_mode9_8 = cm & 3;
66 sa->sa_command_1.bf.feedback_mode = cfb,
67 sa->sa_command_1.bf.sa_rev = 1;
68 sa->sa_command_1.bf.hmac_muting = hmac_mc;
69 sa->sa_command_1.bf.extended_seq_num = esn;
70 sa->sa_command_1.bf.seq_num_mask = sn_mask;
71 sa->sa_command_1.bf.mutable_bit_proc = mute;
72 sa->sa_command_1.bf.copy_pad = cp_pad;
73 sa->sa_command_1.bf.copy_payload = cp_pay;
74 sa->sa_command_1.bf.copy_hdr = cp_hdr;
75}
76
77int crypto4xx_encrypt(struct ablkcipher_request *req)
78{
79 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
80 unsigned int ivlen = crypto_ablkcipher_ivsize(
81 crypto_ablkcipher_reqtfm(req));
82 __le32 iv[ivlen];
83
84 if (ivlen)
85 crypto4xx_memcpy_to_le32(iv, req->info, ivlen);
86
87 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
88 req->nbytes, iv, ivlen, ctx->sa_out, ctx->sa_len, 0);
89}
90
91int crypto4xx_decrypt(struct ablkcipher_request *req)
92{
93 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
94 unsigned int ivlen = crypto_ablkcipher_ivsize(
95 crypto_ablkcipher_reqtfm(req));
96 __le32 iv[ivlen];
97
98 if (ivlen)
99 crypto4xx_memcpy_to_le32(iv, req->info, ivlen);
100
101 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
102 req->nbytes, iv, ivlen, ctx->sa_in, ctx->sa_len, 0);
103}
104
105
106
107
108static int crypto4xx_setkey_aes(struct crypto_ablkcipher *cipher,
109 const u8 *key,
110 unsigned int keylen,
111 unsigned char cm,
112 u8 fb)
113{
114 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
115 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
116 struct dynamic_sa_ctl *sa;
117 int rc;
118
119 if (keylen != AES_KEYSIZE_256 &&
120 keylen != AES_KEYSIZE_192 && keylen != AES_KEYSIZE_128) {
121 crypto_ablkcipher_set_flags(cipher,
122 CRYPTO_TFM_RES_BAD_KEY_LEN);
123 return -EINVAL;
124 }
125
126
127 if (ctx->sa_in || ctx->sa_out)
128 crypto4xx_free_sa(ctx);
129
130 rc = crypto4xx_alloc_sa(ctx, SA_AES128_LEN + (keylen-16) / 4);
131 if (rc)
132 return rc;
133
134
135 sa = ctx->sa_in;
136
137 set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, SA_NOT_SAVE_IV,
138 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
139 SA_NO_HEADER_PROC, SA_HASH_ALG_NULL,
140 SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
141 SA_OP_GROUP_BASIC, SA_OPCODE_DECRYPT,
142 DIR_INBOUND);
143
144 set_dynamic_sa_command_1(sa, cm, SA_HASH_MODE_HASH,
145 fb, SA_EXTENDED_SN_OFF,
146 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
147 SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
148 SA_NOT_COPY_HDR);
149 crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa),
150 key, keylen);
151 sa->sa_contents.w = SA_AES_CONTENTS | (keylen << 2);
152 sa->sa_command_1.bf.key_len = keylen >> 3;
153
154 memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
155 sa = ctx->sa_out;
156 sa->sa_command_0.bf.dir = DIR_OUTBOUND;
157
158 return 0;
159}
160
161int crypto4xx_setkey_aes_cbc(struct crypto_ablkcipher *cipher,
162 const u8 *key, unsigned int keylen)
163{
164 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_CBC,
165 CRYPTO_FEEDBACK_MODE_NO_FB);
166}
167
168int crypto4xx_setkey_aes_cfb(struct crypto_ablkcipher *cipher,
169 const u8 *key, unsigned int keylen)
170{
171 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_CFB,
172 CRYPTO_FEEDBACK_MODE_128BIT_CFB);
173}
174
175int crypto4xx_setkey_aes_ecb(struct crypto_ablkcipher *cipher,
176 const u8 *key, unsigned int keylen)
177{
178 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_ECB,
179 CRYPTO_FEEDBACK_MODE_NO_FB);
180}
181
182int crypto4xx_setkey_aes_ofb(struct crypto_ablkcipher *cipher,
183 const u8 *key, unsigned int keylen)
184{
185 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_OFB,
186 CRYPTO_FEEDBACK_MODE_64BIT_OFB);
187}
188
189int crypto4xx_setkey_rfc3686(struct crypto_ablkcipher *cipher,
190 const u8 *key, unsigned int keylen)
191{
192 struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
193 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
194 int rc;
195
196 rc = crypto4xx_setkey_aes(cipher, key, keylen - CTR_RFC3686_NONCE_SIZE,
197 CRYPTO_MODE_CTR, CRYPTO_FEEDBACK_MODE_NO_FB);
198 if (rc)
199 return rc;
200
201 ctx->iv_nonce = cpu_to_le32p((u32 *)&key[keylen -
202 CTR_RFC3686_NONCE_SIZE]);
203
204 return 0;
205}
206
207int crypto4xx_rfc3686_encrypt(struct ablkcipher_request *req)
208{
209 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
210 __le32 iv[AES_IV_SIZE / 4] = {
211 ctx->iv_nonce,
212 cpu_to_le32p((u32 *) req->info),
213 cpu_to_le32p((u32 *) (req->info + 4)),
214 cpu_to_le32(1) };
215
216 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
217 req->nbytes, iv, AES_IV_SIZE,
218 ctx->sa_out, ctx->sa_len, 0);
219}
220
221int crypto4xx_rfc3686_decrypt(struct ablkcipher_request *req)
222{
223 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
224 __le32 iv[AES_IV_SIZE / 4] = {
225 ctx->iv_nonce,
226 cpu_to_le32p((u32 *) req->info),
227 cpu_to_le32p((u32 *) (req->info + 4)),
228 cpu_to_le32(1) };
229
230 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
231 req->nbytes, iv, AES_IV_SIZE,
232 ctx->sa_out, ctx->sa_len, 0);
233}
234
235static inline bool crypto4xx_aead_need_fallback(struct aead_request *req,
236 bool is_ccm, bool decrypt)
237{
238 struct crypto_aead *aead = crypto_aead_reqtfm(req);
239
240
241 if (aead->authsize & 3)
242 return true;
243
244
245
246
247
248 if (req->cryptlen < AES_BLOCK_SIZE)
249 return true;
250
251
252 if (req->assoclen & 0x3)
253 return true;
254
255
256 if (is_ccm && !(req->iv[0] == 1 || req->iv[0] == 3))
257 return true;
258
259
260 if (is_ccm && decrypt && !req->assoclen)
261 return true;
262
263 return false;
264}
265
266static int crypto4xx_aead_fallback(struct aead_request *req,
267 struct crypto4xx_ctx *ctx, bool do_decrypt)
268{
269 char aead_req_data[sizeof(struct aead_request) +
270 crypto_aead_reqsize(ctx->sw_cipher.aead)]
271 __aligned(__alignof__(struct aead_request));
272
273 struct aead_request *subreq = (void *) aead_req_data;
274
275 memset(subreq, 0, sizeof(aead_req_data));
276
277 aead_request_set_tfm(subreq, ctx->sw_cipher.aead);
278 aead_request_set_callback(subreq, req->base.flags,
279 req->base.complete, req->base.data);
280 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
281 req->iv);
282 aead_request_set_ad(subreq, req->assoclen);
283 return do_decrypt ? crypto_aead_decrypt(subreq) :
284 crypto_aead_encrypt(subreq);
285}
286
287static int crypto4xx_setup_fallback(struct crypto4xx_ctx *ctx,
288 struct crypto_aead *cipher,
289 const u8 *key,
290 unsigned int keylen)
291{
292 int rc;
293
294 crypto_aead_clear_flags(ctx->sw_cipher.aead, CRYPTO_TFM_REQ_MASK);
295 crypto_aead_set_flags(ctx->sw_cipher.aead,
296 crypto_aead_get_flags(cipher) & CRYPTO_TFM_REQ_MASK);
297 rc = crypto_aead_setkey(ctx->sw_cipher.aead, key, keylen);
298 crypto_aead_clear_flags(cipher, CRYPTO_TFM_RES_MASK);
299 crypto_aead_set_flags(cipher,
300 crypto_aead_get_flags(ctx->sw_cipher.aead) &
301 CRYPTO_TFM_RES_MASK);
302
303 return rc;
304}
305
306
307
308
309
310int crypto4xx_setkey_aes_ccm(struct crypto_aead *cipher, const u8 *key,
311 unsigned int keylen)
312{
313 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
314 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
315 struct dynamic_sa_ctl *sa;
316 int rc = 0;
317
318 rc = crypto4xx_setup_fallback(ctx, cipher, key, keylen);
319 if (rc)
320 return rc;
321
322 if (ctx->sa_in || ctx->sa_out)
323 crypto4xx_free_sa(ctx);
324
325 rc = crypto4xx_alloc_sa(ctx, SA_AES128_CCM_LEN + (keylen - 16) / 4);
326 if (rc)
327 return rc;
328
329
330 sa = (struct dynamic_sa_ctl *) ctx->sa_in;
331 sa->sa_contents.w = SA_AES_CCM_CONTENTS | (keylen << 2);
332
333 set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, SA_NOT_SAVE_IV,
334 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
335 SA_NO_HEADER_PROC, SA_HASH_ALG_CBC_MAC,
336 SA_CIPHER_ALG_AES,
337 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
338 SA_OPCODE_HASH_DECRYPT, DIR_INBOUND);
339
340 set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
341 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
342 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
343 SA_NOT_COPY_PAD, SA_COPY_PAYLOAD,
344 SA_NOT_COPY_HDR);
345
346 sa->sa_command_1.bf.key_len = keylen >> 3;
347
348 crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa), key, keylen);
349
350 memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
351 sa = (struct dynamic_sa_ctl *) ctx->sa_out;
352
353 set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
354 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
355 SA_NO_HEADER_PROC, SA_HASH_ALG_CBC_MAC,
356 SA_CIPHER_ALG_AES,
357 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
358 SA_OPCODE_ENCRYPT_HASH, DIR_OUTBOUND);
359
360 set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
361 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
362 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
363 SA_COPY_PAD, SA_COPY_PAYLOAD,
364 SA_NOT_COPY_HDR);
365
366 sa->sa_command_1.bf.key_len = keylen >> 3;
367 return 0;
368}
369
370static int crypto4xx_crypt_aes_ccm(struct aead_request *req, bool decrypt)
371{
372 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
373 struct crypto_aead *aead = crypto_aead_reqtfm(req);
374 unsigned int len = req->cryptlen;
375 __le32 iv[16];
376 u32 tmp_sa[ctx->sa_len * 4];
377 struct dynamic_sa_ctl *sa = (struct dynamic_sa_ctl *)tmp_sa;
378
379 if (crypto4xx_aead_need_fallback(req, true, decrypt))
380 return crypto4xx_aead_fallback(req, ctx, decrypt);
381
382 if (decrypt)
383 len -= crypto_aead_authsize(aead);
384
385 memcpy(tmp_sa, decrypt ? ctx->sa_in : ctx->sa_out, sizeof(tmp_sa));
386 sa->sa_command_0.bf.digest_len = crypto_aead_authsize(aead) >> 2;
387
388 if (req->iv[0] == 1) {
389
390 sa->sa_command_1.bf.crypto_mode9_8 = 1;
391 }
392
393 iv[3] = cpu_to_le32(0);
394 crypto4xx_memcpy_to_le32(iv, req->iv, 16 - (req->iv[0] + 1));
395
396 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
397 len, iv, sizeof(iv),
398 sa, ctx->sa_len, req->assoclen);
399}
400
401int crypto4xx_encrypt_aes_ccm(struct aead_request *req)
402{
403 return crypto4xx_crypt_aes_ccm(req, false);
404}
405
406int crypto4xx_decrypt_aes_ccm(struct aead_request *req)
407{
408 return crypto4xx_crypt_aes_ccm(req, true);
409}
410
411int crypto4xx_setauthsize_aead(struct crypto_aead *cipher,
412 unsigned int authsize)
413{
414 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
415 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
416
417 return crypto_aead_setauthsize(ctx->sw_cipher.aead, authsize);
418}
419
420
421
422
423
424static int crypto4xx_aes_gcm_validate_keylen(unsigned int keylen)
425{
426 switch (keylen) {
427 case 16:
428 case 24:
429 case 32:
430 return 0;
431 default:
432 return -EINVAL;
433 }
434}
435
436static int crypto4xx_compute_gcm_hash_key_sw(__le32 *hash_start, const u8 *key,
437 unsigned int keylen)
438{
439 struct crypto_cipher *aes_tfm = NULL;
440 uint8_t src[16] = { 0 };
441 int rc = 0;
442
443 aes_tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC |
444 CRYPTO_ALG_NEED_FALLBACK);
445 if (IS_ERR(aes_tfm)) {
446 rc = PTR_ERR(aes_tfm);
447 pr_warn("could not load aes cipher driver: %d\n", rc);
448 return rc;
449 }
450
451 rc = crypto_cipher_setkey(aes_tfm, key, keylen);
452 if (rc) {
453 pr_err("setkey() failed: %d\n", rc);
454 goto out;
455 }
456
457 crypto_cipher_encrypt_one(aes_tfm, src, src);
458 crypto4xx_memcpy_to_le32(hash_start, src, 16);
459out:
460 crypto_free_cipher(aes_tfm);
461 return rc;
462}
463
464int crypto4xx_setkey_aes_gcm(struct crypto_aead *cipher,
465 const u8 *key, unsigned int keylen)
466{
467 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
468 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
469 struct dynamic_sa_ctl *sa;
470 int rc = 0;
471
472 if (crypto4xx_aes_gcm_validate_keylen(keylen) != 0) {
473 crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
474 return -EINVAL;
475 }
476
477 rc = crypto4xx_setup_fallback(ctx, cipher, key, keylen);
478 if (rc)
479 return rc;
480
481 if (ctx->sa_in || ctx->sa_out)
482 crypto4xx_free_sa(ctx);
483
484 rc = crypto4xx_alloc_sa(ctx, SA_AES128_GCM_LEN + (keylen - 16) / 4);
485 if (rc)
486 return rc;
487
488 sa = (struct dynamic_sa_ctl *) ctx->sa_in;
489
490 sa->sa_contents.w = SA_AES_GCM_CONTENTS | (keylen << 2);
491 set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
492 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
493 SA_NO_HEADER_PROC, SA_HASH_ALG_GHASH,
494 SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
495 SA_OP_GROUP_BASIC, SA_OPCODE_HASH_DECRYPT,
496 DIR_INBOUND);
497 set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
498 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
499 SA_SEQ_MASK_ON, SA_MC_DISABLE,
500 SA_NOT_COPY_PAD, SA_COPY_PAYLOAD,
501 SA_NOT_COPY_HDR);
502
503 sa->sa_command_1.bf.key_len = keylen >> 3;
504
505 crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa),
506 key, keylen);
507
508 rc = crypto4xx_compute_gcm_hash_key_sw(get_dynamic_sa_inner_digest(sa),
509 key, keylen);
510 if (rc) {
511 pr_err("GCM hash key setting failed = %d\n", rc);
512 goto err;
513 }
514
515 memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
516 sa = (struct dynamic_sa_ctl *) ctx->sa_out;
517 sa->sa_command_0.bf.dir = DIR_OUTBOUND;
518 sa->sa_command_0.bf.opcode = SA_OPCODE_ENCRYPT_HASH;
519
520 return 0;
521err:
522 crypto4xx_free_sa(ctx);
523 return rc;
524}
525
526static inline int crypto4xx_crypt_aes_gcm(struct aead_request *req,
527 bool decrypt)
528{
529 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
530 unsigned int len = req->cryptlen;
531 __le32 iv[4];
532
533 if (crypto4xx_aead_need_fallback(req, false, decrypt))
534 return crypto4xx_aead_fallback(req, ctx, decrypt);
535
536 crypto4xx_memcpy_to_le32(iv, req->iv, GCM_AES_IV_SIZE);
537 iv[3] = cpu_to_le32(1);
538
539 if (decrypt)
540 len -= crypto_aead_authsize(crypto_aead_reqtfm(req));
541
542 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
543 len, iv, sizeof(iv),
544 decrypt ? ctx->sa_in : ctx->sa_out,
545 ctx->sa_len, req->assoclen);
546}
547
548int crypto4xx_encrypt_aes_gcm(struct aead_request *req)
549{
550 return crypto4xx_crypt_aes_gcm(req, false);
551}
552
553int crypto4xx_decrypt_aes_gcm(struct aead_request *req)
554{
555 return crypto4xx_crypt_aes_gcm(req, true);
556}
557
558
559
560
561static int crypto4xx_hash_alg_init(struct crypto_tfm *tfm,
562 unsigned int sa_len,
563 unsigned char ha,
564 unsigned char hm)
565{
566 struct crypto_alg *alg = tfm->__crt_alg;
567 struct crypto4xx_alg *my_alg;
568 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
569 struct dynamic_sa_hash160 *sa;
570 int rc;
571
572 my_alg = container_of(__crypto_ahash_alg(alg), struct crypto4xx_alg,
573 alg.u.hash);
574 ctx->dev = my_alg->dev;
575
576
577 if (ctx->sa_in || ctx->sa_out)
578 crypto4xx_free_sa(ctx);
579
580 rc = crypto4xx_alloc_sa(ctx, sa_len);
581 if (rc)
582 return rc;
583
584 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
585 sizeof(struct crypto4xx_ctx));
586 sa = (struct dynamic_sa_hash160 *)ctx->sa_in;
587 set_dynamic_sa_command_0(&sa->ctrl, SA_SAVE_HASH, SA_NOT_SAVE_IV,
588 SA_NOT_LOAD_HASH, SA_LOAD_IV_FROM_SA,
589 SA_NO_HEADER_PROC, ha, SA_CIPHER_ALG_NULL,
590 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
591 SA_OPCODE_HASH, DIR_INBOUND);
592 set_dynamic_sa_command_1(&sa->ctrl, 0, SA_HASH_MODE_HASH,
593 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
594 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
595 SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
596 SA_NOT_COPY_HDR);
597
598 memset(sa->inner_digest, 0, sizeof(sa->inner_digest));
599 memset(sa->outer_digest, 0, sizeof(sa->outer_digest));
600
601 return 0;
602}
603
604int crypto4xx_hash_init(struct ahash_request *req)
605{
606 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
607 int ds;
608 struct dynamic_sa_ctl *sa;
609
610 sa = ctx->sa_in;
611 ds = crypto_ahash_digestsize(
612 __crypto_ahash_cast(req->base.tfm));
613 sa->sa_command_0.bf.digest_len = ds >> 2;
614 sa->sa_command_0.bf.load_hash_state = SA_LOAD_HASH_FROM_SA;
615
616 return 0;
617}
618
619int crypto4xx_hash_update(struct ahash_request *req)
620{
621 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
622 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
623 struct scatterlist dst;
624 unsigned int ds = crypto_ahash_digestsize(ahash);
625
626 sg_init_one(&dst, req->result, ds);
627
628 return crypto4xx_build_pd(&req->base, ctx, req->src, &dst,
629 req->nbytes, NULL, 0, ctx->sa_in,
630 ctx->sa_len, 0);
631}
632
633int crypto4xx_hash_final(struct ahash_request *req)
634{
635 return 0;
636}
637
638int crypto4xx_hash_digest(struct ahash_request *req)
639{
640 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
641 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
642 struct scatterlist dst;
643 unsigned int ds = crypto_ahash_digestsize(ahash);
644
645 sg_init_one(&dst, req->result, ds);
646
647 return crypto4xx_build_pd(&req->base, ctx, req->src, &dst,
648 req->nbytes, NULL, 0, ctx->sa_in,
649 ctx->sa_len, 0);
650}
651
652
653
654
655int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm)
656{
657 return crypto4xx_hash_alg_init(tfm, SA_HASH160_LEN, SA_HASH_ALG_SHA1,
658 SA_HASH_MODE_HASH);
659}
660
