An Efficient On-Line/Off-Line Signature Scheme without Random Oracles

  • Authors:
  • Marc Joye

  • Affiliations:
  • Thomson R&D France Technology Group, Corporate Research, Security Laboratory, Cesson-Sééévigné Cedex, France 35576

  • Venue:
  • CANS '08 Proceedings of the 7th International Conference on Cryptology and Network Security
  • Year:
  • 2008

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Abstract

On-line/off-line signature schemes allow one to quickly compute a digital signature from a pre-computed coupon. One of the most efficient schemes to date is the GPS scheme, due to Girault, Poupard and Stern. Its security stands in the random oracle model. This paper presents a novel on-line/off-line signature featuring the same on-line efficiency (only a single small integer multiplication has to be computed) but without relying on random oracles.