将CRC算法移植到C#上

public class CRC
{
    private int[] crcTable;
    private int polynomial;

    public CRC(int polynomial)
    {
        this.polynomial = polynomial;
        GenerateCRCTable();
    }

    private void GenerateCRCTable()
    {
        crcTable = new int[256];
        for (int i = 0; i < 256; i++)
        {
            int crc = i;
            for (int j = 0; j < 8; j++)
            {
                if ((crc & 1) == 1)
                {
                    crc = (crc >> 1) ^ polynomial;
                }
                else
                {
                    crc >>= 1;
                }
            }
            crcTable[i] = crc;
        }
    }

    public int CalculateCRC(byte[] data)
    {
        int crc = 0;
        for (int i = 0; i < data.Length; i++)
        {
            crc = (crc >> 8) ^ crcTable[(crc ^ data[i]) & 0xFF];
        }
        return crc;
    }
}

public class Program
{
    public static void Main(string[] args)
    {
        byte[] data = { 0x01, 0x02, 0x03, 0x04, 0x05 };
        CRC crc = new CRC(0x1021);
        int checksum = crc.CalculateCRC(data);
        Console.WriteLine("Checksum: 0x" + checksum.ToString("X"));
    }
}