2 * AMCC SoC PPC4xx Crypto Driver
4 * Copyright (c) 2008 Applied Micro Circuits Corporation.
5 * All rights reserved. James Hsiao <jhsiao@amcc.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * This file implements the Linux crypto algorithms.
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 <crypto/skcipher.h>
35 #include "crypto4xx_reg_def.h"
36 #include "crypto4xx_core.h"
37 #include "crypto4xx_sa.h"
39 static void set_dynamic_sa_command_0(struct dynamic_sa_ctl *sa, u32 save_h,
40 u32 save_iv, u32 ld_h, u32 ld_iv,
41 u32 hdr_proc, u32 h, u32 c, u32 pad_type,
42 u32 op_grp, u32 op, u32 dir)
44 sa->sa_command_0.w = 0;
45 sa->sa_command_0.bf.save_hash_state = save_h;
46 sa->sa_command_0.bf.save_iv = save_iv;
47 sa->sa_command_0.bf.load_hash_state = ld_h;
48 sa->sa_command_0.bf.load_iv = ld_iv;
49 sa->sa_command_0.bf.hdr_proc = hdr_proc;
50 sa->sa_command_0.bf.hash_alg = h;
51 sa->sa_command_0.bf.cipher_alg = c;
52 sa->sa_command_0.bf.pad_type = pad_type & 3;
53 sa->sa_command_0.bf.extend_pad = pad_type >> 2;
54 sa->sa_command_0.bf.op_group = op_grp;
55 sa->sa_command_0.bf.opcode = op;
56 sa->sa_command_0.bf.dir = dir;
59 static void set_dynamic_sa_command_1(struct dynamic_sa_ctl *sa, u32 cm,
60 u32 hmac_mc, u32 cfb, u32 esn,
61 u32 sn_mask, u32 mute, u32 cp_pad,
62 u32 cp_pay, u32 cp_hdr)
64 sa->sa_command_1.w = 0;
65 sa->sa_command_1.bf.crypto_mode31 = (cm & 4) >> 2;
66 sa->sa_command_1.bf.crypto_mode9_8 = cm & 3;
67 sa->sa_command_1.bf.feedback_mode = cfb,
68 sa->sa_command_1.bf.sa_rev = 1;
69 sa->sa_command_1.bf.hmac_muting = hmac_mc;
70 sa->sa_command_1.bf.extended_seq_num = esn;
71 sa->sa_command_1.bf.seq_num_mask = sn_mask;
72 sa->sa_command_1.bf.mutable_bit_proc = mute;
73 sa->sa_command_1.bf.copy_pad = cp_pad;
74 sa->sa_command_1.bf.copy_payload = cp_pay;
75 sa->sa_command_1.bf.copy_hdr = cp_hdr;
78 static inline int crypto4xx_crypt(struct skcipher_request *req,
79 const unsigned int ivlen, bool decrypt)
81 struct crypto_skcipher *cipher = crypto_skcipher_reqtfm(req);
82 struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
83 __le32 iv[AES_IV_SIZE];
86 crypto4xx_memcpy_to_le32(iv, req->iv, ivlen);
88 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
89 req->cryptlen, iv, ivlen, decrypt ? ctx->sa_in : ctx->sa_out,
90 ctx->sa_len, 0, NULL);
93 int crypto4xx_encrypt_noiv(struct skcipher_request *req)
95 return crypto4xx_crypt(req, 0, false);
98 int crypto4xx_encrypt_iv(struct skcipher_request *req)
100 return crypto4xx_crypt(req, AES_IV_SIZE, false);
103 int crypto4xx_decrypt_noiv(struct skcipher_request *req)
105 return crypto4xx_crypt(req, 0, true);
108 int crypto4xx_decrypt_iv(struct skcipher_request *req)
110 return crypto4xx_crypt(req, AES_IV_SIZE, true);
116 static int crypto4xx_setkey_aes(struct crypto_skcipher *cipher,
122 struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
123 struct dynamic_sa_ctl *sa;
126 if (keylen != AES_KEYSIZE_256 &&
127 keylen != AES_KEYSIZE_192 && keylen != AES_KEYSIZE_128) {
128 crypto_skcipher_set_flags(cipher,
129 CRYPTO_TFM_RES_BAD_KEY_LEN);
134 if (ctx->sa_in || ctx->sa_out)
135 crypto4xx_free_sa(ctx);
137 rc = crypto4xx_alloc_sa(ctx, SA_AES128_LEN + (keylen-16) / 4);
144 set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, (cm == CRYPTO_MODE_ECB ?
145 SA_NOT_SAVE_IV : SA_SAVE_IV),
146 SA_NOT_LOAD_HASH, (cm == CRYPTO_MODE_ECB ?
147 SA_LOAD_IV_FROM_SA : SA_LOAD_IV_FROM_STATE),
148 SA_NO_HEADER_PROC, SA_HASH_ALG_NULL,
149 SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
150 SA_OP_GROUP_BASIC, SA_OPCODE_DECRYPT,
153 set_dynamic_sa_command_1(sa, cm, SA_HASH_MODE_HASH,
154 fb, SA_EXTENDED_SN_OFF,
155 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
156 SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
158 crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa),
160 sa->sa_contents.w = SA_AES_CONTENTS | (keylen << 2);
161 sa->sa_command_1.bf.key_len = keylen >> 3;
163 memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
165 sa->sa_command_0.bf.dir = DIR_OUTBOUND;
167 * SA_OPCODE_ENCRYPT is the same value as SA_OPCODE_DECRYPT.
168 * it's the DIR_(IN|OUT)BOUND that matters
170 sa->sa_command_0.bf.opcode = SA_OPCODE_ENCRYPT;
175 int crypto4xx_setkey_aes_cbc(struct crypto_skcipher *cipher,
176 const u8 *key, unsigned int keylen)
178 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_CBC,
179 CRYPTO_FEEDBACK_MODE_NO_FB);
182 int crypto4xx_setkey_aes_cfb(struct crypto_skcipher *cipher,
183 const u8 *key, unsigned int keylen)
185 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_CFB,
186 CRYPTO_FEEDBACK_MODE_128BIT_CFB);
189 int crypto4xx_setkey_aes_ecb(struct crypto_skcipher *cipher,
190 const u8 *key, unsigned int keylen)
192 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_ECB,
193 CRYPTO_FEEDBACK_MODE_NO_FB);
196 int crypto4xx_setkey_aes_ofb(struct crypto_skcipher *cipher,
197 const u8 *key, unsigned int keylen)
199 return crypto4xx_setkey_aes(cipher, key, keylen, CRYPTO_MODE_OFB,
200 CRYPTO_FEEDBACK_MODE_64BIT_OFB);
203 int crypto4xx_setkey_rfc3686(struct crypto_skcipher *cipher,
204 const u8 *key, unsigned int keylen)
206 struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
209 rc = crypto4xx_setkey_aes(cipher, key, keylen - CTR_RFC3686_NONCE_SIZE,
210 CRYPTO_MODE_CTR, CRYPTO_FEEDBACK_MODE_NO_FB);
214 ctx->iv_nonce = cpu_to_le32p((u32 *)&key[keylen -
215 CTR_RFC3686_NONCE_SIZE]);
220 int crypto4xx_rfc3686_encrypt(struct skcipher_request *req)
222 struct crypto_skcipher *cipher = crypto_skcipher_reqtfm(req);
223 struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
224 __le32 iv[AES_IV_SIZE / 4] = {
226 cpu_to_le32p((u32 *) req->iv),
227 cpu_to_le32p((u32 *) (req->iv + 4)),
230 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
231 req->cryptlen, iv, AES_IV_SIZE,
232 ctx->sa_out, ctx->sa_len, 0, NULL);
235 int crypto4xx_rfc3686_decrypt(struct skcipher_request *req)
237 struct crypto_skcipher *cipher = crypto_skcipher_reqtfm(req);
238 struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
239 __le32 iv[AES_IV_SIZE / 4] = {
241 cpu_to_le32p((u32 *) req->iv),
242 cpu_to_le32p((u32 *) (req->iv + 4)),
245 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
246 req->cryptlen, iv, AES_IV_SIZE,
247 ctx->sa_out, ctx->sa_len, 0, NULL);
251 crypto4xx_ctr_crypt(struct skcipher_request *req, bool encrypt)
253 struct crypto_skcipher *cipher = crypto_skcipher_reqtfm(req);
254 struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
255 size_t iv_len = crypto_skcipher_ivsize(cipher);
256 unsigned int counter = be32_to_cpup((__be32 *)(req->iv + iv_len - 4));
257 unsigned int nblks = ALIGN(req->cryptlen, AES_BLOCK_SIZE) /
261 * The hardware uses only the last 32-bits as the counter while the
262 * kernel tests (aes_ctr_enc_tv_template[4] for example) expect that
263 * the whole IV is a counter. So fallback if the counter is going to
266 if (counter + nblks < counter) {
267 struct skcipher_request *subreq = skcipher_request_ctx(req);
270 skcipher_request_set_tfm(subreq, ctx->sw_cipher.cipher);
271 skcipher_request_set_callback(subreq, req->base.flags,
273 skcipher_request_set_crypt(subreq, req->src, req->dst,
274 req->cryptlen, req->iv);
275 ret = encrypt ? crypto_skcipher_encrypt(subreq)
276 : crypto_skcipher_decrypt(subreq);
277 skcipher_request_zero(subreq);
281 return encrypt ? crypto4xx_encrypt_iv(req)
282 : crypto4xx_decrypt_iv(req);
285 static int crypto4xx_sk_setup_fallback(struct crypto4xx_ctx *ctx,
286 struct crypto_skcipher *cipher,
292 crypto_skcipher_clear_flags(ctx->sw_cipher.cipher,
293 CRYPTO_TFM_REQ_MASK);
294 crypto_skcipher_set_flags(ctx->sw_cipher.cipher,
295 crypto_skcipher_get_flags(cipher) & CRYPTO_TFM_REQ_MASK);
296 rc = crypto_skcipher_setkey(ctx->sw_cipher.cipher, key, keylen);
297 crypto_skcipher_clear_flags(cipher, CRYPTO_TFM_RES_MASK);
298 crypto_skcipher_set_flags(cipher,
299 crypto_skcipher_get_flags(ctx->sw_cipher.cipher) &
300 CRYPTO_TFM_RES_MASK);
305 int crypto4xx_setkey_aes_ctr(struct crypto_skcipher *cipher,
306 const u8 *key, unsigned int keylen)
308 struct crypto4xx_ctx *ctx = crypto_skcipher_ctx(cipher);
311 rc = crypto4xx_sk_setup_fallback(ctx, cipher, key, keylen);
315 return crypto4xx_setkey_aes(cipher, key, keylen,
316 CRYPTO_MODE_CTR, CRYPTO_FEEDBACK_MODE_NO_FB);
319 int crypto4xx_encrypt_ctr(struct skcipher_request *req)
321 return crypto4xx_ctr_crypt(req, true);
324 int crypto4xx_decrypt_ctr(struct skcipher_request *req)
326 return crypto4xx_ctr_crypt(req, false);
329 static inline bool crypto4xx_aead_need_fallback(struct aead_request *req,
331 bool is_ccm, bool decrypt)
333 struct crypto_aead *aead = crypto_aead_reqtfm(req);
335 /* authsize has to be a multiple of 4 */
336 if (aead->authsize & 3)
340 * hardware does not handle cases where plaintext
341 * is less than a block.
343 if (len < AES_BLOCK_SIZE)
346 /* assoc len needs to be a multiple of 4 and <= 1020 */
347 if (req->assoclen & 0x3 || req->assoclen > 1020)
350 /* CCM supports only counter field length of 2 and 4 bytes */
351 if (is_ccm && !(req->iv[0] == 1 || req->iv[0] == 3))
357 static int crypto4xx_aead_fallback(struct aead_request *req,
358 struct crypto4xx_ctx *ctx, bool do_decrypt)
360 struct aead_request *subreq = aead_request_ctx(req);
362 aead_request_set_tfm(subreq, ctx->sw_cipher.aead);
363 aead_request_set_callback(subreq, req->base.flags,
364 req->base.complete, req->base.data);
365 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,
367 aead_request_set_ad(subreq, req->assoclen);
368 return do_decrypt ? crypto_aead_decrypt(subreq) :
369 crypto_aead_encrypt(subreq);
372 static int crypto4xx_aead_setup_fallback(struct crypto4xx_ctx *ctx,
373 struct crypto_aead *cipher,
379 crypto_aead_clear_flags(ctx->sw_cipher.aead, CRYPTO_TFM_REQ_MASK);
380 crypto_aead_set_flags(ctx->sw_cipher.aead,
381 crypto_aead_get_flags(cipher) & CRYPTO_TFM_REQ_MASK);
382 rc = crypto_aead_setkey(ctx->sw_cipher.aead, key, keylen);
383 crypto_aead_clear_flags(cipher, CRYPTO_TFM_RES_MASK);
384 crypto_aead_set_flags(cipher,
385 crypto_aead_get_flags(ctx->sw_cipher.aead) &
386 CRYPTO_TFM_RES_MASK);
395 int crypto4xx_setkey_aes_ccm(struct crypto_aead *cipher, const u8 *key,
398 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
399 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
400 struct dynamic_sa_ctl *sa;
403 rc = crypto4xx_aead_setup_fallback(ctx, cipher, key, keylen);
407 if (ctx->sa_in || ctx->sa_out)
408 crypto4xx_free_sa(ctx);
410 rc = crypto4xx_alloc_sa(ctx, SA_AES128_CCM_LEN + (keylen - 16) / 4);
415 sa = (struct dynamic_sa_ctl *) ctx->sa_in;
416 sa->sa_contents.w = SA_AES_CCM_CONTENTS | (keylen << 2);
418 set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
419 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
420 SA_NO_HEADER_PROC, SA_HASH_ALG_CBC_MAC,
422 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
423 SA_OPCODE_HASH_DECRYPT, DIR_INBOUND);
425 set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
426 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
427 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
428 SA_NOT_COPY_PAD, SA_COPY_PAYLOAD,
431 sa->sa_command_1.bf.key_len = keylen >> 3;
433 crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa), key, keylen);
435 memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
436 sa = (struct dynamic_sa_ctl *) ctx->sa_out;
438 set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
439 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
440 SA_NO_HEADER_PROC, SA_HASH_ALG_CBC_MAC,
442 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
443 SA_OPCODE_ENCRYPT_HASH, DIR_OUTBOUND);
445 set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
446 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
447 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
448 SA_COPY_PAD, SA_COPY_PAYLOAD,
451 sa->sa_command_1.bf.key_len = keylen >> 3;
455 static int crypto4xx_crypt_aes_ccm(struct aead_request *req, bool decrypt)
457 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
458 struct crypto4xx_aead_reqctx *rctx = aead_request_ctx(req);
459 struct crypto_aead *aead = crypto_aead_reqtfm(req);
461 u32 tmp_sa[SA_AES128_CCM_LEN + 4];
462 struct dynamic_sa_ctl *sa = (struct dynamic_sa_ctl *)tmp_sa;
463 unsigned int len = req->cryptlen;
466 len -= crypto_aead_authsize(aead);
468 if (crypto4xx_aead_need_fallback(req, len, true, decrypt))
469 return crypto4xx_aead_fallback(req, ctx, decrypt);
471 memcpy(tmp_sa, decrypt ? ctx->sa_in : ctx->sa_out, ctx->sa_len * 4);
472 sa->sa_command_0.bf.digest_len = crypto_aead_authsize(aead) >> 2;
474 if (req->iv[0] == 1) {
475 /* CRYPTO_MODE_AES_ICM */
476 sa->sa_command_1.bf.crypto_mode9_8 = 1;
479 iv[3] = cpu_to_le32(0);
480 crypto4xx_memcpy_to_le32(iv, req->iv, 16 - (req->iv[0] + 1));
482 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
484 sa, ctx->sa_len, req->assoclen, rctx->dst);
487 int crypto4xx_encrypt_aes_ccm(struct aead_request *req)
489 return crypto4xx_crypt_aes_ccm(req, false);
492 int crypto4xx_decrypt_aes_ccm(struct aead_request *req)
494 return crypto4xx_crypt_aes_ccm(req, true);
497 int crypto4xx_setauthsize_aead(struct crypto_aead *cipher,
498 unsigned int authsize)
500 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
501 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
503 return crypto_aead_setauthsize(ctx->sw_cipher.aead, authsize);
510 static int crypto4xx_aes_gcm_validate_keylen(unsigned int keylen)
522 static int crypto4xx_compute_gcm_hash_key_sw(__le32 *hash_start, const u8 *key,
525 struct crypto_cipher *aes_tfm = NULL;
526 uint8_t src[16] = { 0 };
529 aes_tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_NEED_FALLBACK);
530 if (IS_ERR(aes_tfm)) {
531 rc = PTR_ERR(aes_tfm);
532 pr_warn("could not load aes cipher driver: %d\n", rc);
536 rc = crypto_cipher_setkey(aes_tfm, key, keylen);
538 pr_err("setkey() failed: %d\n", rc);
542 crypto_cipher_encrypt_one(aes_tfm, src, src);
543 crypto4xx_memcpy_to_le32(hash_start, src, 16);
545 crypto_free_cipher(aes_tfm);
549 int crypto4xx_setkey_aes_gcm(struct crypto_aead *cipher,
550 const u8 *key, unsigned int keylen)
552 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
553 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
554 struct dynamic_sa_ctl *sa;
557 if (crypto4xx_aes_gcm_validate_keylen(keylen) != 0) {
558 crypto_aead_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
562 rc = crypto4xx_aead_setup_fallback(ctx, cipher, key, keylen);
566 if (ctx->sa_in || ctx->sa_out)
567 crypto4xx_free_sa(ctx);
569 rc = crypto4xx_alloc_sa(ctx, SA_AES128_GCM_LEN + (keylen - 16) / 4);
573 sa = (struct dynamic_sa_ctl *) ctx->sa_in;
575 sa->sa_contents.w = SA_AES_GCM_CONTENTS | (keylen << 2);
576 set_dynamic_sa_command_0(sa, SA_SAVE_HASH, SA_NOT_SAVE_IV,
577 SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
578 SA_NO_HEADER_PROC, SA_HASH_ALG_GHASH,
579 SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
580 SA_OP_GROUP_BASIC, SA_OPCODE_HASH_DECRYPT,
582 set_dynamic_sa_command_1(sa, CRYPTO_MODE_CTR, SA_HASH_MODE_HASH,
583 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
584 SA_SEQ_MASK_ON, SA_MC_DISABLE,
585 SA_NOT_COPY_PAD, SA_COPY_PAYLOAD,
588 sa->sa_command_1.bf.key_len = keylen >> 3;
590 crypto4xx_memcpy_to_le32(get_dynamic_sa_key_field(sa),
593 rc = crypto4xx_compute_gcm_hash_key_sw(get_dynamic_sa_inner_digest(sa),
596 pr_err("GCM hash key setting failed = %d\n", rc);
600 memcpy(ctx->sa_out, ctx->sa_in, ctx->sa_len * 4);
601 sa = (struct dynamic_sa_ctl *) ctx->sa_out;
602 sa->sa_command_0.bf.dir = DIR_OUTBOUND;
603 sa->sa_command_0.bf.opcode = SA_OPCODE_ENCRYPT_HASH;
607 crypto4xx_free_sa(ctx);
611 static inline int crypto4xx_crypt_aes_gcm(struct aead_request *req,
614 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
615 struct crypto4xx_aead_reqctx *rctx = aead_request_ctx(req);
617 unsigned int len = req->cryptlen;
620 len -= crypto_aead_authsize(crypto_aead_reqtfm(req));
622 if (crypto4xx_aead_need_fallback(req, len, false, decrypt))
623 return crypto4xx_aead_fallback(req, ctx, decrypt);
625 crypto4xx_memcpy_to_le32(iv, req->iv, GCM_AES_IV_SIZE);
626 iv[3] = cpu_to_le32(1);
628 return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst,
630 decrypt ? ctx->sa_in : ctx->sa_out,
631 ctx->sa_len, req->assoclen, rctx->dst);
634 int crypto4xx_encrypt_aes_gcm(struct aead_request *req)
636 return crypto4xx_crypt_aes_gcm(req, false);
639 int crypto4xx_decrypt_aes_gcm(struct aead_request *req)
641 return crypto4xx_crypt_aes_gcm(req, true);
645 * HASH SHA1 Functions
647 static int crypto4xx_hash_alg_init(struct crypto_tfm *tfm,
652 struct crypto_alg *alg = tfm->__crt_alg;
653 struct crypto4xx_alg *my_alg;
654 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
655 struct dynamic_sa_hash160 *sa;
658 my_alg = container_of(__crypto_ahash_alg(alg), struct crypto4xx_alg,
660 ctx->dev = my_alg->dev;
663 if (ctx->sa_in || ctx->sa_out)
664 crypto4xx_free_sa(ctx);
666 rc = crypto4xx_alloc_sa(ctx, sa_len);
670 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
671 sizeof(struct crypto4xx_ctx));
672 sa = (struct dynamic_sa_hash160 *)ctx->sa_in;
673 set_dynamic_sa_command_0(&sa->ctrl, SA_SAVE_HASH, SA_NOT_SAVE_IV,
674 SA_NOT_LOAD_HASH, SA_LOAD_IV_FROM_SA,
675 SA_NO_HEADER_PROC, ha, SA_CIPHER_ALG_NULL,
676 SA_PAD_TYPE_ZERO, SA_OP_GROUP_BASIC,
677 SA_OPCODE_HASH, DIR_INBOUND);
678 set_dynamic_sa_command_1(&sa->ctrl, 0, SA_HASH_MODE_HASH,
679 CRYPTO_FEEDBACK_MODE_NO_FB, SA_EXTENDED_SN_OFF,
680 SA_SEQ_MASK_OFF, SA_MC_ENABLE,
681 SA_NOT_COPY_PAD, SA_NOT_COPY_PAYLOAD,
683 /* Need to zero hash digest in SA */
684 memset(sa->inner_digest, 0, sizeof(sa->inner_digest));
685 memset(sa->outer_digest, 0, sizeof(sa->outer_digest));
690 int crypto4xx_hash_init(struct ahash_request *req)
692 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
694 struct dynamic_sa_ctl *sa;
697 ds = crypto_ahash_digestsize(
698 __crypto_ahash_cast(req->base.tfm));
699 sa->sa_command_0.bf.digest_len = ds >> 2;
700 sa->sa_command_0.bf.load_hash_state = SA_LOAD_HASH_FROM_SA;
705 int crypto4xx_hash_update(struct ahash_request *req)
707 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
708 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
709 struct scatterlist dst;
710 unsigned int ds = crypto_ahash_digestsize(ahash);
712 sg_init_one(&dst, req->result, ds);
714 return crypto4xx_build_pd(&req->base, ctx, req->src, &dst,
715 req->nbytes, NULL, 0, ctx->sa_in,
716 ctx->sa_len, 0, NULL);
719 int crypto4xx_hash_final(struct ahash_request *req)
724 int crypto4xx_hash_digest(struct ahash_request *req)
726 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
727 struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
728 struct scatterlist dst;
729 unsigned int ds = crypto_ahash_digestsize(ahash);
731 sg_init_one(&dst, req->result, ds);
733 return crypto4xx_build_pd(&req->base, ctx, req->src, &dst,
734 req->nbytes, NULL, 0, ctx->sa_in,
735 ctx->sa_len, 0, NULL);
741 int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm)
743 return crypto4xx_hash_alg_init(tfm, SA_HASH160_LEN, SA_HASH_ALG_SHA1,