mirror of
https://github.com/FWGS/xash3d-fwgs
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70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/*
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crclib.c - generate crc stuff
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Copyright (C) 2007 Uncle Mike
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Copyright (C) 2019 a1batross
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(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. See the
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GNU General Public License for more details.
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*/
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#pragma once
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#ifndef CRCLIB_H
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#define CRCLIB_H
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#include "xash3d_types.h"
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typedef struct
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{
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uint buf[4];
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uint bits[2];
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uint in[16];
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} MD5Context_t;
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#define CRC32_INIT_VALUE 0xFFFFFFFFUL
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#define CRC32_XOR_VALUE 0xFFFFFFFFUL
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static inline void CRC32_Init( uint32_t *pulCRC )
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{
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*pulCRC = CRC32_INIT_VALUE;
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}
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static inline uint32_t CRC32_Final( uint32_t pulCRC )
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{
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return pulCRC ^ CRC32_XOR_VALUE;
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}
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byte CRC32_BlockSequence( byte *base, int length, int sequence );
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void CRC32_ProcessBuffer( uint32_t *pulCRC, const void *pBuffer, int nBuffer );
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void CRC32_ProcessByte( uint32_t *pulCRC, byte ch );
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/*
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==================
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MD5Init
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Start MD5 accumulation. Set bit count to 0 and buffer to mysterious initialization constants.
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==================
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*/
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static inline void MD5Init( MD5Context_t *ctx )
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{
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ctx->buf[0] = 0x67452301;
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ctx->buf[1] = 0xefcdab89;
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ctx->buf[2] = 0x98badcfe;
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ctx->buf[3] = 0x10325476;
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ctx->bits[0] = 0;
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ctx->bits[1] = 0;
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}
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void MD5Update( MD5Context_t *ctx, const byte *buf, uint len );
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void MD5Final( byte digest[16], MD5Context_t *ctx );
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uint COM_HashKey( const char *string, uint hashSize );
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char *MD5_Print( byte hash[16] );
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#endif // CRCLIB_H
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