quakeforge-old/common/net_com.c

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/*
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.
2000-01-06 13:48:07 +00:00
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.
2000-01-06 13:48:07 +00:00
See the GNU General Public License for more details.
2000-01-06 13:48:07 +00:00
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 );
}