newtree/source/net_com.c

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/*
net_com.c
MD4-based checksum utility functions
Copyright (C) 2000 Jeff Teunissen <d2deek@pmail.net>
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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
$Id$
*/
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#ifdef HAVE_CONFIG_H
# include "config.h"
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#endif
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#include <mdfour.h>
unsigned int
Com_BlockChecksum (void *buffer, int length)
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{
int digest[4];
unsigned int val;
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mdfour ((unsigned char *) digest, (unsigned char *) buffer, length);
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val = digest[0] ^ digest[1] ^ digest[2] ^ digest[3];
return val;
}
void
Com_BlockFullChecksum (void *buffer, int len, unsigned char *outbuf)
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{
mdfour (outbuf, (unsigned char *) buffer, len);
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}