Analyzing Unlinkability of Some Group Signatures

Zhou Sujing; Lin Dongdai

Paper 2005/178

Analyzing Unlinkability of Some Group Signatures

Zhou Sujing and 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.

Note: Correct some errors and add in some new information.

Metadata

Available format(s): PDF
Publication info: Published elsewhere. Unknown where it was published
Keywords: Digital Signature Group Signature.
Contact author(s): zhousujing @ is iscas ac cn
History: 2005-09-08: revised; 2005-06-14: received; See all versions
Short URL: https://ia.cr/2005/178
License: CC BY

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},
      note = {\url{https://eprint.iacr.org/2005/178}},
      url = {https://eprint.iacr.org/2005/178}
}