An Approach to Solve Tracking and Message Blocking Problems in RFID

The popularity of Radio Frequency Identification (RFID) in various applications is due to its low cost. The low cost comes with the compromise in hardware used in its implementation. Therefore, the standard authentication and cryptographic methods cannot be used for implementation of any security related application. Various lightweight authentication schemes have been proposed till date. In this paper, we have tried to solve the tracking problem between two successful sessions that exists in various existing authentication schemes. Our algorithm can be appended with an authentication scheme to overcome the tracking problem between two successful sessions. We also found a message blocking problem in the authentication scheme proposed by Khor et al. And suggest a solution to that.