Group Signatures with Decentralized Tracing

  • Tingting Lu
  • , Jiangtao Li
  • , Lei Zhang*
  • , Kwok Yan Lam
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

Group signature is a useful cryptographic primitive that allows a message to be signed by a user on behalf of a group which is managed by some trusted authority, namely the group manager. However, group signature schemes typically place a disturbingly high level of trust on the group manager, which has become a major deployment issue in cyber applications where there is no centralized trust management. In this paper, we investigate mechanisms that aim to achieve a balance between anonymity and accountability in group signatures by decentralizing the operation of tracing the signer. We propose a practical group signature scheme with decentralized tracing. When comparing with a similar result by Benjumea et al. (FC 2008), our proposal has the advantage of a shorter signature size.

Original languageEnglish
Title of host publicationInformation Security and Cryptology - 15th International Conference, Inscrypt 2019, Revised Selected Papers
EditorsZhe Liu, Moti Yung
PublisherSpringer
Pages435-442
Number of pages8
ISBN (Print)9783030429201
DOIs
StatePublished - 2020
Event15th International Conference on Information Security and Cryptology, Inscrypt 2019 - Nanjing, China
Duration: 6 Dec 20198 Dec 2019

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume12020 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference15th International Conference on Information Security and Cryptology, Inscrypt 2019
Country/TerritoryChina
CityNanjing
Period6/12/198/12/19

Keywords

  • Accountability
  • Anonymity
  • Decentralization
  • Group signatures
  • Signature size

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