--- /dev/null
+/***********************************************************************
+**
+** Implementation of the Skein hash function.
+**
+** Source code author: Doug Whiting, 2008.
+**
+** This algorithm and source code is released to the public domain.
+**
+************************************************************************/
+#ifndef _SKEIN_BLOCK_H_
+#define _SKEIN_BLOCK_H_
+
+#include "skein_base.h" /* get the Skein API definitions */
+
+void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr,
+ size_t blk_cnt, size_t byte_cnt_add);
+void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr,
+ size_t blk_cnt, size_t byte_cnt_add);
+void skein_1024_process_block(struct skein_1024_ctx *ctx, const u8 *blk_ptr,
+ size_t blk_cnt, size_t byte_cnt_add);
+
+#endif