An identity-based proxy signature scheme from pairings

  • Authors:
  • Kyung-Ah Shim

  • Affiliations:
  • Department of Mathematics, Ewha Womans University, Seoul, Korea

  • Venue:
  • ICICS'06 Proceedings of the 8th international conference on Information and Communications Security
  • Year:
  • 2006

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Abstract

A proxy signature enables an original signer to delegate her signing capability to a proxy signer and then the proxy signer can sign a message on behalf of the original signer. In this paper we propose an ID-based proxy signature scheme from bilinear pairings. We provide exact security proof of the proposed ID-based proxy signature scheme in the random oracle model under the Computational Diffie-Hellman assumption without using Forking Lemma.