Date Added: Jun 2012
One of the key problems in Radio Frequency IDentification(RFID) is security and privacy. Many RFID authentication protocols have been proposed to preserve security and privacy of the system. Nevertheless, most of these protocols are analyzed and it is shown that they cannot provide security against some RFID attacks. RAPP is a new ultra-lightweight authentication protocol with permutation. In RAPP, only three operations are involved: bitwise XOR, left rotation and permutation. In this paper, the authors give an active attack on RAPP.