Analyzing Unlinkability of Some Group Signatures

Zhou Sujing; Lin Dongdai

Paper 2005/178 Original: eprint.iacr.org/2005/178 ↗

Analyzing Unlinkability of Some Group Signatures

Zhou Sujing

Lin Dongdai

Abstract

Miyaji et.al proposed a fully functional(i.e., satisfying unforgeability, exculpability,anonymity, traceability, unlinkability, and revocability.) group signature over only known-order groups, that is based only on Discrete logarithm related assumptions, specifically, multiple DLP they proposed in the same paper [MU04]. In this paper, we point out their scheme and an improved scheme [ZZW05] do not have unlinkability.

Metadata

Available format(s): PDF
Publication info: Preprint.
History: 2005-09-08: last updated; 2005-06-14: published
Short URL: https://ia.cr/2005/178
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2005/178,
      author = {Zhou Sujing and Lin Dongdai},
      title = {Analyzing Unlinkability of Some Group Signatures},
      howpublished = {Cryptology {ePrint} Archive, Paper 2005/178},
      year = {2005},
      url = {https://eprint.iacr.org/2005/178}
}