A provably secure short signature scheme based on discrete logarithms

  • Authors:
  • Zuhua Shao

  • Affiliations:
  • Department of Computer and Electronic Engineering, Zhejiang University of Science and Technology, No. 318, LiuHe Road, Hangzhou, Zhejiang 310023, PR China

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2007

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Abstract

We propose a short signature scheme whose security is closely related to the discrete logarithm assumption in the random oracle model. The new scheme offers a better security guarantee than existing discrete-logarithm-based signature schemes. The main advantage of this scheme over the DSA signature scheme is that it has a one-fourth reduction in both the signature length and the verification computation; the level of security is preserved. The new short signatures are needed to low-bandwidth communication, low-storage and low-computation environments, and particularly applicable to smart cards and wireless devices.