Defining strong privacy for RFID

  • Juels A
  • Weis S
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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.

Author-supplied keywords

  • EPC
  • Privacy
  • Proximity cards
  • RFID
  • Security

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Authors

  • Ari Juels

  • Stephen A. Weis

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