A New Identification Scheme Based on the Bilinear Diffie-Hellman Problem

  • Authors:
  • Myungsun Kim;Kwangjo Kim

  • Affiliations:
  • -;-

  • Venue:
  • ACISP '02 Proceedings of the 7th Australian Conference on Information Security and Privacy
  • Year:
  • 2002

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Abstract

We construct an interactive identification scheme based on the bilinear Diffie-Hellman problem and analyze its security. This scheme is practical in terms of key size, communication complexity, and availability of identity-variance provided that an algorithm of computing the Weil-pairing is feasible. We prove that this scheme is secure against active attacks as well as passive attacks if the bilinear Diffie-Hellman problem is intractable. Our proof is based on the fact that the computational Diffie-Hellman problem is hard in the additive group of points of an elliptic curve over a finite field, on the other hand, the decisional Diffie-Hellman problem is easy in the multiplicative group of the finite field mapped by a bilinear map. Finally, this scheme is compared with other identification schemes.