Efficient Non-malleable Commitment Schemes

  • Authors:
  • Marc Fischlin;Roger Fischlin

  • Affiliations:
  • -;-

  • Venue:
  • CRYPTO '00 Proceedings of the 20th Annual International Cryptology Conference on Advances in Cryptology
  • Year:
  • 2000

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Abstract

We present efficient non-malleable commitment schemes based on standard assumptions such as RSA and Discrete-Log, and under the condition that the network provides publicly available RSA or Discrete-Log parameters generated by a trusted party. Our protocols require only three rounds and a few modular exponentiations. We also discuss the difference between the notion of non-malleable commitment schemes used by Dolev, Dwork and Naor and the one given by Di Crescenzo, Ishai and Ostrovsky.