A suite of non-pairing ID-based threshold ring signature schemes with different levels of anonymity (extended abstract)

Patrick P. Tsang, Man Ho Allen Au, Joseph K. Liu, Willy Susilo, Duncan S. Wong

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

36 Citations (Scopus)


Since the introduction of Identity-based (ID-based) cryptography by Shamir in 1984, numerous ID-based signature schemes have been proposed. In 2001, Rivest et al. introduced ring signature that provides irrevocable signer anonymity and spontaneous group formation. In recent years, ID-based ring signature schemes have been proposed and almost all of them are based on bilinear pairings. In this paper, we propose the first ID-based threshold ring signature scheme that is not based on bilinear pairings. We also propose the first ID-based threshold 'linkable' ring signature scheme. We emphasize that the anonymity of the actual signers is maintained even against the private key generator (PKG) of the ID-based system. Finally we show how to add identity escrow to the two schemes. Due to the different levels of signer anonymity they support, the schemes proposed in this paper actually form a suite of ID-based threshold ring signature schemes which is applicable to many real-world applications with varied anonymity requirements.
Original languageEnglish
Title of host publicationProvable Security - 4th International Conference, ProvSec 2010, Proceedings
Number of pages18
Publication statusPublished - 23 Nov 2010
Externally publishedYes
Event4th International Conference on Provable Security, ProvSec 2010 - Malacca, Malaysia
Duration: 13 Oct 201015 Oct 2010

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume6402 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference4th International Conference on Provable Security, ProvSec 2010

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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