patchDevLauncher.py 文件源码

def init_crc16(self):
        """The algorithm uses tables with precalculated values"""
        for i in range(0, 256):
            crc = c_ushort(i).value
            for j in range(0, 8):
                if crc & 0x0001:
                    crc = c_ushort(crc >> 1).value ^ self.crc16_constant
                else:
                    crc = c_ushort(crc >> 1).value
            self.crc16_tab.append(crc)