Paper 2012/289

Ring Group Signatures

Liqun Chen

Abstract

In many applications of group signatures, not only a signer's identity but also which group the signer belongs to is sensitive information regarding signer privacy. In this paper, we study these applications and combine a group signature with a ring signature to create a ring group signature, which specifies a set of possible groups without revealing which member of which group produced the signature. The main contributions of this paper are a formal definition of a ring group signature scheme and its security model, a generic construction and a concrete example of such a scheme. Both the construction and concrete scheme are provably secure if the underlying group signature and ring signature schemes are secure.

Metadata
Available format(s)
PDF PS
Category
Public-key cryptography
Publication info
Published elsewhere. The 11th IEEE International Conference on Trust, Security and Privacy in Computing and Communications
Keywords
ring signaturesgroup signaturesring group signaturesgroup-ambiguity.
Contact author(s)
liqun chen @ hp com
History
2012-05-29: received
Short URL
https://ia.cr/2012/289
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2012/289,
      author = {Liqun Chen},
      title = {Ring Group Signatures},
      howpublished = {Cryptology ePrint Archive, Paper 2012/289},
      year = {2012},
      note = {\url{https://eprint.iacr.org/2012/289}},
      url = {https://eprint.iacr.org/2012/289}
}
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