C#实现所有CRC8,CRC16,CRC32校验算法
说明：
CRC8与串口大傻计算结果不一致
CRC16与串口大傻计算结果一致
CRC32与串口大傻计算结果一致，但4.5版本大傻计算结果最高字节始终为0
同时对16进制字符串11 22 33 进行校验计算结果如下
本算法结果如下：
using System;
using System.Collections.Generic;
using System.Text;
namespace PortMananger
{
class CRCAlgorithms
{
public static string GenCheckCode(string CheckType, string msg)
{
msg = msg.Replace("\r", "").Replace("\r", "").Replace("\t", "");
byte[] bytes = strToHexByte(msg);
string checkRlt = "";
当字符串进行计算
//var c = CalCRC16.ToCRC16("你好，我们测试一下CRC16算法", true); //结果为：
if (CheckType == "CRC16 L->H")
{
//按照16进制数组计算CRC16
//L->H
byte[] buff = CRC16.CRC(bytes, true); //结果为：
checkRlt = ByteToOctString(buff);
}
else if (CheckType == "CRC16 H->L")
{
byte[] buff = CRC16.CRC(bytes, false); //结果为：
checkRlt = ByteToOctString(buff);
}
else if (CheckType == "CRC32 H->L")
{
int crc = CRC32.CRC(bytes);
byte b1 = (byte)((crc & 0xFF000000) >> 24); //高位置
byte b2 = (byte)((crc & 0xFF0000) >> 16); //低位置
byte b3 = (byte)((crc & 0xFF00) >> 8); //高位置
byte b4 = (byte)(crc & 0xFF); //低位置
byte[] buff = new byte[4] { b1, b2, b3, b4 };
//H->L
checkRlt = ByteToOctString(buff);
}
else if (CheckType == "CRC32 L->H")
{
int crc = CRC32.CRC(bytes);
byte b1 = (byte)((crc & 0xFF000000) >> 24); //高位置
byte b2 = (byte)((crc & 0xFF0000) >> 16); //低位置
byte b3 = (byte)((crc & 0xFF00) >> 8); //高位置
byte b4 = (byte)(crc & 0xFF); //低位置
byte[] buff = new byte[4] { b4, b3, b2, b1 };
//H->L
checkRlt = ByteToOctString(buff);
}
else if (CheckType == "Check Sum")
{
byte checkSum = 0;
//总加和
for (int i = 0; i < bytes.Length; i++)
{
checkSum += bytes[i];
}
checkRlt = checkSum.ToString("X2");
}
else if (CheckType == "Check Xor")
{
//总加异或
byte checkSum = 0;
for (int i = 0; i < bytes.Length; i++)
{
checkSum ^= bytes[i];
}
checkRlt = checkSum.ToString("X2");
}
else
{
int c8 = CRC8.CRC(bytes);
checkRlt = c8.ToString("X2");
}
//rtb_send.Text += c32.ToString("X8");
//int c8_2 = CRC8.CRC_8(bytes);
//int c8_3 = CalCRC8.CRC_8(bytes);
//int c8_4 = CalCRC8.crc8(bytes);
return checkRlt;
}
public static byte[] strToHexByte(string hex)
{
hex = hex.Replace(" ", "").Replace("\r", "").Replace("\n", "").Replace("\t", "");
byte[] bytes = new byte[(hex.Length + 1) / 2];
string h = "";
for (int i = 0; i < bytes.Length; i++)
{
try
{
try
{
h = hex.Substring(i * 2, 2);
}
catch
{
h = hex.Substring(i * 2);
}
// 每两个字符是一个 byte。
bytes[i] = byte.Parse(h,
System.Globalization.NumberStyles.HexNumber);
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
// Rethrow an exception with custom message.
//MessageBox.Show(Lang.Get("16进制数输入格式不正确!"), h);
}
}
return bytes;
}
static string ByteToOctString(byte[] buff, bool AddSpace = true)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < buff.Length; i++)
{
sb.Append(buff[i].ToString("X2"));
if (AddSpace)
sb.Append(' ');
}
return sb.ToString();
}
///
/// 查表和下面的算法一致
///
public class CRC8
{
///
/// CRC8位校验表
///
private static byte[] CRC8Table = new byte[] {
0,94,188,226,97,63,221,131,194,156,126,32,163,253,31,65,
157,195,33,127,252,162,64,30, 95,1,227,189,62,96,130,220,
35,125,159,193,66,28,254,160,225,191,93,3,128,222,60,98,
190,224,2,92,223,129,99,61,124,34,192,158,29,67,161,255,
70,24,250,164,39,121,155,197,132,218,56,102,229,187,89,7,
219,133,103,57,186,228,6,88,25,71,165,251,120,38,196,154,
101,59,217,135,4,90,184,230,167,249,27,69,198,152,122,36,
248,166,68,26,153,199,37,123,58,100,134,216,91,5,231,185,
140,210,48,110,237,179,81,15,78,16,242,172,47,113,147,205,
17,79,173,243,112,46,204,146,211,141,111,49,178,236,14,80,
175,241,19,77,206,144,114,44,109,51,209,143,12,82,176,238,
50,108,142,208,83,13,239,177,240,174,76,18,145,207,45,115,
202,148,118,40,171,245,23,73,8,86,180,234,105,55,213,139,
87,9,235,181,54,104,138,212,149,203, 41,119,244,170,72,22,
233,183,85,11,136,214,52,106,43,117,151,201,74,20,246,168,
116,42,200,150,21,75,169,247,182,232,10,84,215,137,107,53 };
public static byte CRC(byte[] buffer)
{
return CRC(buffer, 0, buffer.Length);
}
public static byte CRC(byte[] buffer, int off, int len)
{
byte crc = 0;
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (off < 0 || len < 0 || off + len > buffer.Length)
{
throw new ArgumentOutOfRangeException();
}
for (int i = off; i < len; i++)
{
crc = CRC8Table[crc ^ buffer[i]];
}
return crc;
}
///
/// 和上面的查表算法一致
///
public static byte CRC_8(byte[] buffer)
{
byte crc = 0;
for (int j = 0; j < buffer.Length; j++)
{
crc ^= buffer[j];
for (int i = 0; i < 8; i++)
{
if ((crc & 0x01) != 0)
{
crc >>= 1;
crc ^= 0x8c;
}
else
{
crc >>= 1;
}
}
}
return crc;
}
}
public class CRC16
{
public static byte[] CRC(byte[] data, bool Reverse = false)
{
int len = data.Length;
if (len > 0)
{
ushort crc = 0xFFFF;
for (int i = 0; i < len; i++)
{
crc = (ushort)(crc ^ (data[i]));
for (int j = 0; j < 8; j++)
{
crc = (crc & 1) != 0 ? (ushort)((crc >> 1) ^ 0xA001) : (ushort)(crc >> 1);
}
}
byte hi = (byte)((crc & 0xFF00) >> 8); //高位置
byte lo = (byte)(crc & 0x00FF); //低位置
if (Reverse)
return new byte[] { lo, hi };
else
return new byte[] { hi, lo };
}
return new byte[] { 0, 0 };
}
}
///
/// CRC 效验
/// 快速检测算法
///
public class CRC32
{
static UInt32[] crcTable = {
0x0, 0x77073096, 0xee0e612c, 0x990951ba, 0x76dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0xedb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x9b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x1db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x6b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0xf00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x86d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x3b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x4db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0xd6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0xa00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x26d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x5005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0xcb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0xbdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
};
public static int CRC(byte[] bytes)
{
int iCount = bytes.Length;
UInt32 crc = 0xFFFFFFFF;
for (int i = 0; i < iCount; i++)
{
crc = ((crc >> 8) & 0x00FFFFFF) ^ crcTable[(crc ^ bytes[i]) & 0xFF];
}
UInt32 temp = crc ^ 0xFFFFFFFF;
int t = (int)temp;
return (t);
}
}
}
}