Unclonable group identification

  • Authors:
  • Ivan Damgård;Kasper Dupont;Michael Østergaard Pedersen

  • Affiliations:
  • Aarhus University, BRICS;Aarhus University, BRICS;Aarhus University, BRICS

  • Venue:
  • EUROCRYPT'06 Proceedings of the 24th annual international conference on The Theory and Applications of Cryptographic Techniques
  • Year:
  • 2006

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Abstract

We introduce and motivate the concept of unclonable group identification, that provides maximal protection against sharing of identities while still protecting the anonymity of users. We prove that the notion can be realized from any one-way function and suggest a more efficient implementation based on specific assumptions.