A ring signature scheme using bilinear pairings

  • Authors:
  • Jing Xu;Zhenfeng Zhang;Dengguo Feng

  • Affiliations:
  • State Key Laboratory of Information Security, P.R. China;State Key Laboratory of Information Security, P.R. China;State Key Laboratory of Information Security, P.R. China

  • Venue:
  • WISA'04 Proceedings of the 5th international conference on Information Security Applications
  • Year:
  • 2004

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Abstract

The bilinear pairings such as Weil pairing or Tate pairing over elliptic curves and hyperelliptic curves have been found various applications in cryptography very recently. Ring signature is a very useful tool to provide the user's anonymity and the signer's privacy. In this paper, we propose a ring signature scheme based on the bilinear pairings, which is secure against chosen message attacks without random oracles. Moreover, we use this ring signature scheme to construct a concurrent signature scheme for fair exchange of signatures.