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->Hbyte[] 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->LcheckRlt = 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->LcheckRlt = 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();}/// <summary>/// 查表和下面的算法一致/// </summary>public class CRC8{/// <summary> /// CRC8位校验表 /// </summary> 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;}/// <summary>/// 和上面的查表算法一致/// </summary>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 };elsereturn new byte[] { hi, lo };}return new byte[] { 0, 0 };}}/// <summary>/// CRC 效验/// 快速检测算法/// </summary>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);}}}
}