--- /dev/null
+/* sha512.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2011 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 SHA512_H_
+#define SHA512_H_
+
+#include <stdint.h>
+#include "sha2_large_common.h"
+
+#define SHA512_HASH_BITS 512
+#define SHA512_HASH_BYTES (SHA512_HASH_BITS/8)
+#define SHA512_BLOCK_BITS 1024
+#define SHA5122_BLOCK_BYTES (SHA512_BLOCK_BITS/8)
+
+typedef sha2_large_common_ctx_t sha512_ctx_t;
+
+
+void sha512_init(sha512_ctx_t *ctx);
+void sha512_nextBlock (sha512_ctx_t* ctx, const void* block);
+void sha512_lastBlock(sha512_ctx_t* ctx, const void* block, uint16_t length_b);
+void sha512_ctx2hash(void* dest, const sha512_ctx_t* ctx);
+void sha512(void* dest, const void* msg, uint32_t length_b);
+
+
+#endif /* SHA512_H_ */