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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Expressive Subgroup Signatures
verfasst von : Xavier Boyen, Cécile Delerablée
Erschienen in: Security and Cryptography for Networks
Verlag: Springer Berlin Heidelberg
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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.