An Ultra-lightweight RFID Distance Bounding Protocol

Security and privacy of RFID systems have become very important issues along with their increasing applications. Recently, Jeon and Yoon proposed a new ultra-lightweight RFID authentication protocol(RAPLT) using merge and separation operations. Since their protocol uses very lightweight bitwise operations: XOR, merge, and separation operations, it will be suitable for the applications using low-cost RFID tags. However, in wireless communications, it is very important for RFID authentication protocols to resist the relay attacks which are performed by an adversary possessing a proxy reader and a proxy tag. Using the proxy equipment, the adversary simply relays the communication messages between a genuine reader and a genuine tag, and is authenticated by the reader. Since RAPLT is insecure from the relay attacks, in this paper, we propose an ultra-lightweight RFID distance bounding protocol that can resist the relay attacks.