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https://git.code.sf.net/p/quake/quake2forge
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64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
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/*
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checksum.c
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MD4-based checksum utility functions
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Copyright (C) 2000 Jeff Teunissen <d2deek@pmail.net>
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Author: Jeff Teunissen <d2deek@pmail.net>
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Date: 01 Jan 2000
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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static const char rcsid[] =
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"$Id$";
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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unsigned int
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Com_BlockChecksum (const void *buffer, int length)
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{
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int digest[4];
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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];
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return val;
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}
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void
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Com_BlockFullChecksum (const void *buffer, int len, unsigned char *outbuf)
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{
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mdfour (outbuf, (unsigned char *) buffer, len);
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}
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