Unclonable Lightweight Authentication Scheme

  • Authors:
  • Ghaith Hammouri;Erdinç Öztürk;Berk Birand;Berk Sunar

  • Affiliations:
  • Worcester Polytechnic Institute, Worcester, MA 01609-2280;Worcester Polytechnic Institute, Worcester, MA 01609-2280;Worcester Polytechnic Institute, Worcester, MA 01609-2280;Worcester Polytechnic Institute, Worcester, MA 01609-2280

  • Venue:
  • ICICS '08 Proceedings of the 10th International Conference on Information and Communications Security
  • Year:
  • 2008

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Abstract

We propose a lightweight, tamper-resilient challenge-response authentication scheme. The scheme that we propose (HB+PUF) is a variant of the PUF-HB protocol [1] which utilizes Physically Unclonable Functions (PUFs). We reduce the security of (HB+PUF) in the active attacker model to solving the LPN problem. The proposed scheme enjoys strong tamper-resilience due to the PUF properties. We present a proof of concept implementation for the proposed protocol. To generate the random bits needed for the protocol, we reuse the PUF circuit as a Random Number Generator (RNG). This construction shows to be cost-effective since we will be using the same hardware for authentication as well as random number generation without incuring any significant overhead. The overall scheme including storage, tamper-resilience and RNG can be achieved with less than 1000 gates. The small footprint should be ideal for constrained environments such as RFID's, smart cards, and sensor networks.