32 lines
629 B
C
32 lines
629 B
C
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// Common/CRC.h
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// #pragma once
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#ifndef __COMMON_CRC_H
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#define __COMMON_CRC_H
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#include "Types.h"
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class CCRC
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{
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UINT32 _value;
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public:
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static UINT32 Table[256];
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CCRC(): _value(0xFFFFFFFF){};
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void Init() { _value = 0xFFFFFFFF; }
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void Update(const void *data, UINT32 size);
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UINT32 GetDigest() const { return _value ^ 0xFFFFFFFF; }
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static UINT32 CalculateDigest(const void *data, UINT32 size)
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{
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CCRC crc;
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crc.Update(data, size);
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return crc.GetDigest();
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}
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static bool VerifyDigest(UINT32 digest, const void *data, UINT32 size)
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{
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return (CalculateDigest(data, size) == digest);
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}
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};
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#endif
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