--- /dev/null
+/* skein.h */
+/*
+ This file is part of the AVR-Crypto-Lib.
+ Copyright (C) 2009 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/>.
+*/
+/*
+ * \file skein.c
+ * \author Daniel Otte
+ * \email daniel.otte@rub.de
+ * \date 2009-03-12
+ * \license GPLv3 or later
+ *
+ */
+
+#ifndef SKEIN_H_
+#define SKEIN_H_
+
+#include <stdint.h>
+#include "ubi.h"
+
+#define SKEIN256_BLOCKSIZE UBI256_BLOCKSIZE
+#define SKEIN256_BLOCKSIZE_B UBI256_BLOCKSIZE_B
+
+#define SKEIN512_BLOCKSIZE UBI512_BLOCKSIZE
+#define SKEIN512_BLOCKSIZE_B UBI512_BLOCKSIZE_B
+
+#define SKEIN1024_BLOCKSIZE UBI1024_BLOCKSIZE
+#define SKEIN1024_BLOCKSIZE_B UBI1024_BLOCKSIZE_B
+
+typedef struct{
+ uint16_t outsize_b;
+ ubi256_ctx_t ubictx;
+}skein256_ctx_t;
+
+void skein256_init(skein256_ctx_t* ctx, uint16_t outsize_b);
+void skein256_nextBlock(skein256_ctx_t* ctx, const void* block);
+void skein256_lastBlock(skein256_ctx_t* ctx, const void* block, uint16_t length_b);
+void skein256_ctx2hash(void* dest, skein256_ctx_t* ctx);
+void skein256(void* dest, uint16_t outlength_b, const void* msg, uint32_t length_b);
+
+typedef struct{
+ uint16_t outsize_b;
+ ubi512_ctx_t ubictx;
+}skein512_ctx_t;
+
+void skein512_init(skein512_ctx_t* ctx, uint16_t outsize_b);
+void skein512_nextBlock(skein512_ctx_t* ctx, const void* block);
+void skein512_lastBlock(skein512_ctx_t* ctx, const void* block, uint16_t length_b);
+void skein512_ctx2hash(void* dest, skein512_ctx_t* ctx);
+void skein512(void* dest, uint16_t outlength_b, const void* msg, uint32_t length_b);
+
+typedef struct{
+ uint16_t outsize_b;
+ ubi1024_ctx_t ubictx;
+}skein1024_ctx_t;
+
+void skein1024_init(skein1024_ctx_t* ctx, uint16_t outsize_b);
+void skein1024_nextBlock(skein1024_ctx_t* ctx, const void* block);
+void skein1024_lastBlock(skein1024_ctx_t* ctx, const void* block, uint16_t length_b);
+void skein1024_ctx2hash(void* dest, skein1024_ctx_t* ctx);
+void skein1024(void* dest, uint16_t outlength_b, const void* msg, uint32_t length_b);
+
+#endif /* SKEIN_H_ */