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Subliminal channels for signature transfer and their application to signature distribution schemes

  • Kouichi Sakurai
  • Toshiya Itoh
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 718)

Abstract

In this paper, we consider the subliminal channel, hidden in an identification scheme, for signature transfer. We point out that the direct parallelization of the Fiat-Shamir identification scheme has a subliminal channel for the transmission of the digital signature, which does not exist in the serial (zero-knowledge) version. We apply this subliminal channel to a multi-verifier interactive protocol and propose a distributed verification signature that cannot be verified without all verifiers' corporation. Our proposed protocol is the first implementation of the distributed verification signature without secure channels, and the basic idea of our construction suggests the novel primitive with which a signature transfer secure against adversary can be constructed using only one-way function (without trapdoor).

Keywords

Signature Scheme Secret Message Parallel Version Secret Share Scheme Signature Transfer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • Kouichi Sakurai
    • 1
  • Toshiya Itoh
    • 2
  1. 1.Computer & Information Systems LaboratoryMitsubishi Electric CorporationKamakuraJapan
  2. 2.Dept. of Information ProcessingTokyo Institute of TechnologyYokohamaJapan

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