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53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
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/***
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*
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* Copyright (c) 1999, 2000, Valve LLC. All rights reserved.
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*
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* This product contains software technology licensed from Id
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* Software, Inc. ("Id Technology"). Id Technology (c) 1996 Id Software, Inc.
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* All Rights Reserved.
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*
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* Use, distribution, and modification of this source code and/or resulting
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* object code is restricted to non-commercial enhancements to products from
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* Valve LLC. All other use, distribution, or modification is prohibited
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* without written permission from Valve LLC.
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*
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****/
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/* crc.h */
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#ifndef CRC_H
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#define CRC_H
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#ifdef _WIN32
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#pragma once
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#endif
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// MD5 Hash
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typedef struct
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{
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unsigned int buf[4];
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unsigned int bits[2];
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unsigned char in[64];
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} MD5Context_t;
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typedef unsigned long CRC32_t;
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void CRC32_Init(CRC32_t *pulCRC);
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CRC32_t CRC32_Final(CRC32_t pulCRC);
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void CRC32_ProcessBuffer(CRC32_t *pulCRC, void *p, int len);
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void CRC32_ProcessByte(CRC32_t *pulCRC, unsigned char ch);
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int CRC_File(CRC32_t *crcvalue, char *pszFileName);
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unsigned char COM_BlockSequenceCRCByte (unsigned char *base, int length, int sequence);
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void MD5Init(MD5Context_t *context);
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void MD5Update(MD5Context_t *context, unsigned char const *buf,
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unsigned int len);
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void MD5Final(unsigned char digest[16], MD5Context_t *context);
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void Transform(unsigned int buf[4], unsigned int const in[16]);
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int MD5_Hash_File(unsigned char digest[16], char *pszFileName, int bUsefopen, int bSeed, unsigned int seed[4]);
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char *MD5_Print(unsigned char hash[16]);
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int MD5_Hash_CachedFile(unsigned char digest[16], unsigned char *pCache, int nFileSize, int bSeed, unsigned int seed[4]);
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int CRC_MapFile(CRC32_t *crcvalue, char *pszFileName);
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#endif
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