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On RFID Privacy with Mutual Authentication and Tag Corruption

  • Frederik Armknecht
  • Ahmad-Reza Sadeghi
  • Ivan Visconti
  • Christian Wachsmann
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6123)

Abstract

RFID systems have become increasingly popular and are already used in many real-life applications. Although very useful, RFIDs also introduce privacy risks since they carry identifying information that can be traced. Hence, several RFID privacy models have been proposed. However, they are often incomparable and in part do not reflect the capabilities of real-world adversaries. Recently, Paise and Vaudenay presented a general RFID security and privacy model that abstracts and unifies most previous approaches. This model defines mutual authentication (between the RFID tag and reader) and several privacy notions that capture adversaries with different tag corruption behavior and capabilities.

In this paper, we revisit the model proposed by Paise and Vaudenay and investigate some subtle issues such as tag corruption aspects. We show that in their formal definitions tag corruption discloses the temporary memory of tags and leads to the impossibility of achieving both mutual authentication and any reasonable notion of RFID privacy in their model. Moreover, we show that the strongest privacy notion (narrow-strong privacy) cannot be achieved simultaneously with reader authentication even if the adversary is not capable of corrupting a tag during the protocol execution.

Although our results are shown on the privacy definition by Paise and Vaudenay, they give insight to the difficulties of setting up a mature security and privacy model for RFID systems that aims at fulfilling the sophisticated requirements of real-life applications.

Keywords

RFID Security Model Privacy Mutual Authentication 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Frederik Armknecht
    • 1
  • Ahmad-Reza Sadeghi
    • 2
  • Ivan Visconti
    • 3
  • Christian Wachsmann
    • 2
  1. 1.University of MannheimGermany
  2. 2.Horst Görtz Institute for IT-Security (HGI)Ruhr-University BochumGermany
  3. 3.Dipartimento di Informatica ed ApplicazioniUniversity of SalernoItaly

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