Expressive Subgroup Signatures

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.

• Type: Journal
• Year: 2008
• Where: SCN
• Authors: Xavier Boyen, Cécile Delerablée
• Keywords: Communications, Complete Disclosure, Group Signature Constructions, SCN 2008, Signature