C# CRC8实现

 1         byte crc8(byte[] buffer, int len)
 2         {
 3             byte crc, i, j;
 4             crc = 0;
 5 
 6             for (j = 0; j < len; j++)
 7             {
 8                 for (i = 0x01; i != 0; i <<= 1)
 9                 {
10                     if (((crc & 0x01) ^ (buffer[j] & i)) == 1)
11                     {
12                         crc ^= 0x18;
13                         crc >>= 1;
14                         crc |= 0x80;
15                     }
16                     else
17                         crc = (byte)(crc >> 1);
18                 }
19             }
20             return crc;
21         }
22         byte crc8(byte[] buffer)
23         {
24             return crc8(buffer, buffer.Length);
25         }

这里有一个查表实现的算法
http://www.cnblogs.com/canny/archive/2004/12/27/82468.aspx