CRC32算法C#实现.pdf

CRC32 算法 C#实现

代码如下：

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

namespace GetCRC32

{

class CRC32Cls

Crc32Table = new ulong[256];

int i,j;

for(i = 0;i < 256; i++)

{

Crc = (ulong)i;

for (j = 8; j > 0; j--)

{

if ((Crc & 1) == 1)

Crc = (Crc >> 1) ^ 0xEDB88320;

else

public ulong GetCRC32Str(string sInputString)

{

//生成码表

GetCRC32Table();

byte[] buffer = System.Text.ASCIIEncoding.ASCII.GetBytes(sInputString);

ulong value = 0xffffffff;

int len = buffer.Length;

for (int i = 0; i < len; i++)

{

value = (value >> 8) ^ Crc32Table[(value & 0xFF)^ buffer[i]];