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RSA Laboratories

Defining Strong Privacy for RFID

Citation: A. Juels and S. Weis. Defining Strong Privacy for RFID. 2006.

Abstract: In this work, we consider privacy in Radio Frequency IDentification (RFID) systems. Our contribution is threefold: (1) We propose a simple, formal definition of strong privacy useful for basic analysis of RFID systems, as well as a different (weaker) definition applicable to multi-verifier systems; (2) We apply our definition to reveal vulnerabilities in several proposed privacy-enhancing RFID protocols; and (3) We formally analyze and suggest improvements to "Hash-Locks", one of the first privacy-enhancing RFID protocols in the literature.

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