fix legal problems with md4

source/net_com.c

@@ -0,0 +1,50 @@
+/*
+	net_com.c
+	
+	MD4-based checksum utility functions
+
+	Copyright (C) 1999,2000  contributors of the QuakeForge project
+	Please see the file "AUTHORS" for a list of contributors
+
+	Author: Jeff Teunissen	<d2deek@pmail.net>
+	Date: 01 Jan 2000
+
+	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:
+
+		Free Software Foundation, Inc.
+		59 Temple Place - Suite 330
+		Boston, MA  02111-1307, USA
+
+	$Id$
+*/
+
+#include <mdfour.h>
+
+unsigned Com_BlockChecksum (void *buffer, int length)
+{
+	int				digest[4];
+	unsigned 		val;
+
+	mdfour ( (unsigned char *) digest, (unsigned char *) buffer, length );
+
+	val = digest[0] ^ digest[1] ^ digest[2] ^ digest[3];
+
+	return val;
+}
+
+void Com_BlockFullChecksum (void *buffer, int len, unsigned char *outbuf)
+{
+	mdfour ( outbuf, (unsigned char *) buffer, len );
+}