+/* hmac-sha256.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2008 Daniel Otte (daniel.otte@rub.de)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
#ifndef HMACSHA256_H_
#define HMACSHA256_H_
#include "sha256.h"
-#define HMAC_BITS SHA256_HASH_BITS
-#define HMAC_BYTES ((HMAC_BITS+7)/8)
+#define HMAC_SHA256_BITS SHA256_HASH_BITS
+#define HMAC_SHA256_BYTES SHA256_HASH_BYTES
+#define HMAC_SHA256_BLOCK_BITS SHA256_BLOCK_BITS
+#define HMAC_SHA256_BLOCK_BYTES SHA256_BLOCK_BYTES
+
+
+typedef struct {
+ sha256_ctx_t a,b;
+} hmac_sha256_ctx_t;
-typedef sha256_ctx_t hmac_sha256_ctx_t;
+void hmac_sha256_init(hmac_sha256_ctx_t *s, const void* key, uint16_t keylength_b);
+void hmac_sha256_nextBlock(hmac_sha256_ctx_t *s, const void* block);
+void hmac_sha256_lastBlock(hmac_sha256_ctx_t *s, const void* block, uint16_t length_b);
+void hmac_sha256_final(void* dest, hmac_sha256_ctx_t *s);
-void hmac_sha256_init(hmac_sha256_ctx_t *s, void* key, uint16_t kl);
-void hmac_sha256_final(hmac_sha256_ctx_t *s, void* key, uint16_t kl);
-void hmac_sha256(void* dest, void* key, uint16_t kl, void* msg, uint64_t ml);
+void hmac_sha256(void* dest, const void* key, uint16_t keylength_b, const void* msg, uint32_t msglength_b);
#endif /*HMACSHA256_H_*/