RFID security authentication protocol based on key update mechanism

This paper first finds the flaw of RFID authentication protocol proposed in Ref. [1] and points out which cannot resist replay attack on the reader. Then, combined with the demand of RFID security and the key update mechanism, this paper proposes an improved RFID security authentication protocol. Finally, we analyze the security and performance of the protocol. The results show that the protocol can achieve the mutual authentication of the identity, prevent from illegal reader, interception, and location tracking, resist against counterfeiting attack, replay attack, denial-of-service attack, and man-in-the-middle attack, meanwhile having forward security.