Expressive Subgroup Signatures

By Xavier Boyen and Cécile Delerablée.

In Security and Cryptography for Networks (SCN 2008), volume 5229 of Lecture Notes in Computer Science, pages 185-200. Springer, 2008.


In this work, we propose a new generalization of the notion of group signatures, that allows signers to cover the entire spectrum from complete disclosure to complete anonymity. Previous group signature constructions did not provide any disclosure capability, or at best a very limited one (such as subset membership). Our scheme offers a very powerful language for disclosing exactly in what capacity a subgroup of signers is making a signature on behalf of the group.


- published paper (PS) (PDF) © Springer-Verlag
- expanded version (PS) (PDF)
- presentation slides (HTML)


  author = {Xavier Boyen and C\'ecile Delerabl\'ee},
  title = {Expressive Subgroup Signatures},
  booktitle = {Security and Cryptography in Networks---SCN 2008},
  series = {Lecture Notes in Computer Science},
  volume = {5229},
  pages = {185--200},
  publisher = {Berlin: Springer-Verlag},
  year = {2008},
  note = {Available at \url{}}

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