Hash-based Enhancement of Location Privacy for Radio-Frequency Identification Devices using Varying Identifiers

  • Authors:
  • Dirk Henrici;Paul Müller

  • Affiliations:
  • -;-

  • Venue:
  • PERCOMW '04 Proceedings of the Second IEEE Annual Conference on Pervasive Computing and Communications Workshops
  • Year:
  • 2004

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Abstract

Radio-Frequency Identification Devices (RFID) mayemerge as one of the most pervasive computingtechnologies in history. On the one hand, with tagsaffixed to consumer items as well as letters, packets orvehicles costs in the supply chain can be greatlyreduced and new applications introduced. On the otherhand, unique means of identification in each tag likeserial numbers enable effortless traceability of personsand goods. But data protection and privacy areworthwhile civil liberties.This paper introduces a simple scheme relying on one-wayhash-functions that greatly enhances locationprivacy by changing traceable identifiers on every readgetting by with only a single, unreliable messageexchange. Thereby the scheme is safe from manythreats like eavesdropping, message interception,spoofing, and replay attacks.