mode_s parity112 in cs

        private uint modeS_Parity112bit(byte[] src)
        {
            if (src.Length != 11)
            {
                throw new Exception("length of data is not correct");
            }

            UInt32 poly = 0xfffa0480;
            UInt32 data = (UInt32)((src[0] << 24) | (src[1] << 16) | (src[2] << 8) | (src[3]));
            UInt32 data1 = (UInt32)((src[4] << 24) | (src[5] << 16) | (src[6] << 8) | (src[7]));
            UInt32 data2 = (UInt32)((src[8] << 24) | (src[9] << 16) | (src[10] << 8));



            int i = 0;

            while (i < 88)
            {

                if ((data & 0x80000000) != 0)
                {
                    data = data ^ poly;
                }
                data = data << 1;
                if ((data1 & 0x80000000) != 0)
                {
                    data = data | 1;
                }
                data1 = data1 << 1;
                if ((data2 & 0x80000000) != 0)
                {
                    data1 = data1 | 1;
                }

                data2 = data2 << 1;
                i++;
            }

            return Convert.ToUInt32((data & 0xffffff00) >> 8);
        }