On the Sequentiality of Three Optimal Structured Multisignature Schemes

  • Zuhua Shao
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4464)

Abstract

A structured multisignature scheme is an order-sensitive multisignature scheme that allows participating signers to sign the same messages in compliance with a specified signing order. In this paper, we find that three optimal structured multisignature schemes cannot keep sequentiality since they cannot prevent partial signers producing a valid partial multisignature in a signing order different from the specified one. Hence, verifies cannot identify the real signing order only by checking verification equations. We guess that it is impossible to design any optimal structured multisignature scheme.

Keywords

Cryptanalysis structured multisignature sequentiality  order forge attack 
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Copyright information

© Springer Berlin Heidelberg 2007

Authors and Affiliations

  • Zuhua Shao
    • 1
  1. 1.Department of Computer and Electronic Engineering, Zhejiang University of Science and Technology, No. 85, XueYuan Road, Hangzhou, Zhejiang, 310012, P.R. ofChina

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