Security of RFID Protocols – A Case Study

In the context of Dolev-Yao style analysis of security protocols, we investigate the security claims of a recently proposed RFID authentication protocol. We exhibit a flaw which has gone unnoticed in RFID protocol literature and present the resulting attacks on authentication, untraceability, and desynchronization resistance. We analyze and discuss the authors' proofs of security. References to other vulnerable protocols are given.