mifareauth.py 文件源码

def _authenticate(self, block, uid, key = "\xff\xff\xff\xff\xff\xff", use_b_key = False):
        """Authenticates to a particular block using a specified key"""
        if nfc.nfc_device_set_property_bool(self.__device, nfc.NP_EASY_FRAMING, True) < 0:
            raise Exception("Error setting Easy Framing property")
        abttx = (ctypes.c_uint8 * 12)()
        abttx[0] = self.MC_AUTH_A if not use_b_key else self.MC_AUTH_B
        abttx[1] = block
        for i in range(6):
            abttx[i + 2] = ord(key[i])
        for i in range(4):
            abttx[i + 8] = ord(uid[i])
        abtrx = (ctypes.c_uint8 * 250)()
        return nfc.nfc_initiator_transceive_bytes(self.__device, ctypes.pointer(abttx), len(abttx),
                                                  ctypes.pointer(abtrx), len(abtrx), 0)