8,16,32 crc校验
#region CRC8
/// <summary>
/// CRC8 µŕªҪ˵ķ¡£
/// </summary>
public class CRC8 : ICRC
{
#region CRC 8 λУҩ±닊
/// <summary>
/// CRC 8 λУҩ±닊 /// </summary>
public byte[] CRC8_Table = 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
};
#endregion
uint crc = 0;
/// <summary>
///·µ»֠CRC8Уҩ½ẻ;
/// </summary>
public long Value
{
get
{
return crc;
}
set
{
crc = (uint)value;
}
}
/// <summary>
/// CRCУҩǰʨ׃Уҩֵ
/// </summary>
public void Reset()
{
crc = 0;
}
/// <summary>
/// 8 λ CRC Уҩ ²�ҩë ѨҪ±»Уҩëºΐ£ҩë
/// </summary>
/// <param name="CRC"></param>
/// <param name="OldCRC"> ³�ª 0 ,Ӕº·µ»ٖµ ret </param>
/// <returns> ²�ҩëʱ ret¡¡ΪУҩë</returns>
public void Crc(byte CRC, byte OldCRC)
{
crc = CRC8_Table[OldCRC ^ CRC];
}
/// <summary>
/// 8 λ CRC Уҩ ²�ҩë ֻҪ±»Уҩë
/// </summary>
/// <param name="bval"></param>
public void Crc(int bval)
{
crc = CRC8_Table[crc ^ bval];
}
/// <summary>
/// 8 λ CRC Уҩ ²�ҩë ֻҪ±»Уҩµŗֽۊ� /// </summary>
/// <param name="buffer"></param>
public void Crc(byte[] buffer)
{
Crc(buffer, 0, buffer.Length);
}
/// <summary>
/// 8 λ CRC Уҩ ²�ҩë Ҫ±»Уҩµŗֽۊ�ẻλ׃ºΗֽڳ¤¶ƍ
/// </summary>
/// <param name="buf"></param>
/// <param name="off"></param>
/// <param name="len"></param>
public void Crc(byte[] buf, int off, int len)
{
if (buf == null)
{
throw new ArgumentNullException("buf");
}
if (off < 0 || len < 0 || off + len > buf.Length)
{
throw new ArgumentOutOfRangeException();
}
for (int i = off; i < len; i++)
{
Crc(buf[i]);
}
}
}
#endregion
#region CRC16
/// <summary>
/// CRC16 µŕªҪ˵ķ¡£
/// </summary>
public class CRC16 : ICRC
{
#region CRC 16 λУҩ±닊
/// <summary>
/// 16 λУҩ±럕pper ±닊 /// </summary>
public ushort[] uppercrctab = new ushort[]
{
0x0000,0x1231,0x2462,0x3653,0x48c4,0x5af5,0x6ca6,0x7e97,
0x9188,0x83b9,0xb5ea,0xa7db,0xd94c,0xcb7d,0xfd2e,0xef1f
};
/// <summary>
/// 16 λУҩ±럌ower ±닊 /// </summary>
public ushort[] lowercrctab = new ushort[]
{
0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,
0x8108,0x9129,0xa14a,0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef
};
#endregion
ushort crc = 0;
/// <summary>
/// Уҩºẻ
/// </summary>
public long Value
{
get
{
return crc;
}
set
{
crc = (ushort)value;
}
}
/// <summary>
/// ʨ׃crc ³�µ
/// </summary>
public void Reset()
{
crc = 0;
}
/// <summary>
/// Crc16
/// </summary>
/// <param name="ucrc"></param>
/// <param name="buf"></param>
public void Crc(ushort ucrc, byte[] buf)
{
crc = ucrc;
Crc(buf);
}
/// <summary>
/// Crc16
/// </summary>
/// <param name="bval"></param>
public void Crc(int bval)
{
ushort h = (ushort)((crc >> 12) & 0x0f);
ushort l = (ushort)((crc >> 8) & 0x0f);
ushort temp = crc;
temp = (ushort)(((temp & 0x00ff) << 8) | bval);
temp = (ushort)(temp ^ (uppercrctab[(h - 1) + 1] ^ lowercrctab[(l - 1) + 1]));
crc = temp;
}
/// <summary>
/// Crc16
/// </summary>
/// <param name="buffer"></param>
public void Crc(byte[] buffer)
{
Crc(buffer, 0, buffer.Length);
}
/// <summary>
/// Crc16
/// </summary>
/// <param name="buf"></param>
/// <param name="off"></param>
/// <param name="len"></param>
public void Crc(byte[] buf, int off, int len)
{
if (buf == null)
{
throw new ArgumentNullException("buf");
}
if (off < 0 || len < 0 || off + len > buf.Length)
{
throw new ArgumentOutOfRangeException();
}
for (int i = off; i < len; i++)
{
Crc(buf[i]);
}
}
}
#endregion
#region CRC32
public sealed class Crc32 : ICRC
{
readonly static uint CrcSeed = 0xFFFFFFFF;
readonly static uint[] CrcTable = new uint[] {
0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA, 0x076DC419,
0x706AF48F, 0xE963A535, 0x9E6495A3, 0x0EDB8832, 0x79DCB8A4,
0xE0D5E91E, 0x97D2D988, 0x09B64C2B, 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,
0x01DB7106, 0x98D220BC, 0xEFD5102A, 0x71B18589, 0x06B6B51F,
0x9FBFE4A5, 0xE8B8D433, 0x7807C9A2, 0x0F00F934, 0x9609A88E,
0xE10E9818, 0x7F6A0DBB, 0x086D3D2D, 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,
0x03B6E20C, 0x74B1D29A, 0xEAD54739, 0x9DD277AF, 0x04DB2615,
0x73DC1683, 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,
0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 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,
0x026D930A, 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,
0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38, 0x92D28E9B,
0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21, 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
};
internal static uint ComputeCrc32(uint oldCrc, byte bval)
{
return (uint)(Crc32.CrcTable[(oldCrc ^ bval) & 0xFF] ^ (oldCrc >> 8));
}
uint crc = 0;
public long Value
{
get
{
return (long)crc;
}
set
{
crc = (uint)value;
}
}
public void Reset()
{
crc = 0;
}
public void Crc(int bval)
{
crc ^= CrcSeed;
crc = CrcTable[(crc ^ bval) & 0xFF] ^ (crc >> 8);
crc ^= CrcSeed;
}
public void Crc(byte[] buffer)
{
Crc(buffer, 0, buffer.Length);
}
public void Crc(byte[] buf, int off, int len)
{
if (buf == null)
{
throw new ArgumentNullException("buf");
}
if (off < 0 || len < 0 || off + len > buf.Length)
{
throw new ArgumentOutOfRangeException();
}
crc ^= CrcSeed;
while (--len >= 0)
{
crc = CrcTable[(crc ^ buf[off++]) & 0xFF] ^ (crc >> 8);
}
crc ^= CrcSeed;
}
}
#endregion