Annual International Cryptology Conference

CRYPTO 1999: Advances in Cryptology — CRYPTO’ 99 pp 148-164

A Simple Publicly Verifiable Secret Sharing Scheme and Its Application to Electronic Voting

  • Berry Schoenmakers
Conference paper

DOI: 10.1007/3-540-48405-1_10

Volume 1666 of the book series Lecture Notes in Computer Science (LNCS)

Abstract

A publicly verifiable secret sharing (PVSS) scheme is a verifiable secret sharing scheme with the property that the validity of the shares distributed by the dealer can be verified by any party; hence verification is not limited to the respective participants receiving the shares. We present a new construction for PVSS schemes, which compared to previous solutions by Stadler and later by Fujisaki and Okamoto, achieves improvements both in efficiency and in the type of intractability assumptions. The running time is O(nk), where k is a security parameter, and n is the number of participants, hence essentially optimal. The intractability assumptions are the standard Diffie-Hellman assumption and its decisional variant. We present several applications of our PVSS scheme, among which is a new type of universally verifiable election scheme based on PVSS. The election scheme becomes quite practical and combines several advantages of related electronic voting schemes, which makes it of interest in its own right.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Berry Schoenmakers
    • 1
  1. 1.Department of Mathematics and Computing ScienceEindhoven University of TechnologyMB EindhovenThe Netherlands