Cryptology ePrint Archive: Report 2008/406

An asymptotically optimal RFID protocol against relay attacks

Gildas Avoine and Aslan Tchamkerten

Abstract: Relay attacks are a major concern for RFID systems: during an authentication process an adversary transparently relays messages between a verifier and a remote legitimate prover.

We present an authentication protocol suited for RFID systems. Our solution is the first that prevents relay attacks without degrading the authentication security level: it minimizes the probability that the verifier accepts a fake proof of identity, whether or not a relay attack occurs.

Category / Keywords: secret-key cryptography / authentication, proximity check, relay attack, RFID

Date: received 23 Sep 2008

Contact author: tcham at mit edu

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Version: 20080924:041239 (All versions of this report)

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