Lightweight anonymous authentication with TLS and DAA for embedded mobile devices

  • Authors:
  • Christian Wachsmann;Liqun Chen;Kurt Dietrich;Hans Löhr;Ahmad-Reza Sadeghi;Johannes Winter

  • Affiliations:
  • Horst Görtz Institute for IT-Security, Ruhr-University Bochum, Germany;Hewlett Packard Labs, Bristol, UK;Institute for Applied Information Processing and Communication, Graz University of Technology, Austria;Horst Görtz Institute for IT-Security, Ruhr-University Bochum, Germany;Horst Görtz Institute for IT-Security, Ruhr-University Bochum, Germany;Institute for Applied Information Processing and Communication, Graz University of Technology, Austria

  • Venue:
  • ISC'10 Proceedings of the 13th international conference on Information security
  • Year:
  • 2010

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Abstract

Although anonymous authentication has been extensively studied, so far no scheme has been widely adopted in practice. A particular issue with fully anonymous authentication schemes is that users cannot easily be prevented from copying and sharing credentials. In this paper, we propose an anonymous authentication scheme for mobile devices that prevents copying and sharing of credentials based on hardware security features. Our system is an optimized adaptation of an existing direct anonymous attestation (DAA) scheme, specifically designed for resource-constrained mobile devices. Our solution provides (i) anonymity and untraceability of mobile embedded devices against service providers, (ii) secure device authentication even against collusions of malicious service providers, and (iii) allows for revocation of authentication credentials. We present a new cryptographic scheme with a proof of security, as well as an implementation on ARM TrustZone. Moreover, we evaluate the efficiency of our approach and demonstrate its suitability for mobile devices.