--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hmac-sha1.h	Sat Jun 01 01:38:42 2013 +0800
@@ -0,0 +1,41 @@
+/* hmac-sha1.h */
+/*
+    This file is part of the AVR-Crypto-Lib.
+    Copyright (C) 2008  Daniel Otte ([email protected])
+
+    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 HMACSHA1_H_
+#define HMACSHA1_H_
+
+#include "sha1.h"
+
+#define HMAC_SHA1_BITS        SHA1_HASH_BITS
+#define HMAC_SHA1_BYTES       SHA1_HASH_BYTES
+#define HMAC_SHA1_BLOCK_BITS  SHA1_BLOCK_BITS
+#define HMAC_SHA1_BLOCK_BYTES SHA1_BLOCK_BYTES
+
+typedef struct{
+	 sha1_ctx_t a, b;
+} hmac_sha1_ctx_t;
+
+
+void hmac_sha1_init(hmac_sha1_ctx_t *s, const void* key, uint16_t keylength_b);
+void hmac_sha1_nextBlock(hmac_sha1_ctx_t *s, const void* block);
+void hmac_sha1_lastBlock(hmac_sha1_ctx_t *s, const void* block, uint16_t length_b);
+void hmac_sha1_final(void* dest, hmac_sha1_ctx_t *s);
+
+void hmac_sha1(void* dest, const void* key, uint16_t keylength_b, const void* msg, uint32_t msglength_b);
+
+#endif /*HMACSHA1_H_*/