An Efficient Improvement on Safkhani et al.’s Hash-Based Mutual Authentication Protocol for RFID Systems

Nowadays, plenty of radio frequency identification (RFID) systems have been proposed and used in the real world for convenience. An RFID system requires advanced properties of confidentiality, indistinguishability, forward security and mutual authentication to provide a higher security level. Safkhani et al. proposed a hash-based authentication protocol for RFID systems. Though their protocol possesses the above properties, the server’s computational load is heavy. In this paper, we propose an authentication protocol for RFID systems to improve the computational efficiency with a long-term secure value and provide the same security level.