A Mutual Anonymity Private Authentication Protocol to Use in Radio-Frequency Identification Systems

Radio frequency identification (RFID) has many advantages in the field of large-scale identification, including speed increase and cost reduction.For this reason, this system has many applications in the   modern world and can be used as an essential tool for improving human life. Since this technology faces serious challenges in the field of security and privacy, its applications has been limited due to security   concerns and delays in standardization. Given the widespread use of RFID technology in large-scale systems, and importance of privacy in these systems, this article introduces a mutual anonymous private authentication protocol (MAPAP); a protocol which adds privacy and scalability features to a mutual    authentication protocol. In this new protocol the privacy is measured using the information leakage criterion and it is seen that the amount of information disclosed by this protocol when compromised is significantly less than group-based authentication. In a system with 220 tags, with the increase in the number of compromised tags, the difference in information leakage between this protocol and the group-based authentication protocol increases, such that, when the number of compromised tags in this system reaches 150, information disclosed by the proposed protocol is about 65 percent less than group-based authentication and this difference increases with increasing system size.