1 files changed, 48 insertions, 0 deletions
diff --git a/src/sha1.h b/src/sha1.h
new file mode 100644
index 00000000..a3b86395
--- /dev/null
+++ b/src/sha1.h
@@ -0,0 +1,48 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 2012 Simon Howard
+//
+// 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 2
+// 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+//     SHA-1 digest.
+//
+//-----------------------------------------------------------------------------
+
+#ifndef __SHA1_H__
+#define __SHA1_H__
+
+#include "doomtype.h"
+
+typedef struct sha1_context_s sha1_context_t;
+typedef byte sha1_digest_t[20];
+
+struct sha1_context_s {
+    uint32_t h0,h1,h2,h3,h4;
+    uint32_t nblocks;
+    byte buf[64];
+    int count;
+};
+
+void SHA1_Init(sha1_context_t *context);
+void SHA1_Update(sha1_context_t *context, byte *buf, size_t len);
+void SHA1_Final(sha1_digest_t digest, sha1_context_t *context);
+void SHA1_UpdateInt32(sha1_context_t *context, unsigned int val);
+void SHA1_UpdateString(sha1_context_t *context, char *str);
+
+#endif /* #ifndef __SHA1_H__ */
+