Publicly verifiable secret sharing

  • Authors:
  • Markus Stadler

  • Affiliations:
  • Institute for Theoretical Computer Science, ETH Zurich, Zurich, Switzerland

  • Venue:
  • EUROCRYPT'96 Proceedings of the 15th annual international conference on Theory and application of cryptographic techniques
  • Year:
  • 1996

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Abstract

A secret sharing scheme allows to share a secret among several participants such that only certain groups of them can recover it. Verifiable secret sharing has been proposed to achieve security against cheating participants. Its first realization had the special property that everybody not only the participants, can verify that Ihe shares are correctly distributed. We will call such schemes publicly verifiable secret sharing schemes, we discuss new applications to escrow cryptosystems and to payment systems with revocable anonymity, and we present two new realizations based on ElGamal's cryptosystem.