Decentralized traceable attribute-based signatures

El Kaafarani, Ali; Ghadafi, Essam; Khader, Dalia

Abstract

We provide a formal security model for traceable attribute-based signatures. Our focus is on the more practical case where attribute management is distributed among different authorities rather than relying on a single central authority. By specializing our model to the single attribute authority setting, we overcome some of the shortcomings of the existing model for the same setting. Our second contribution is a generic construction for the primitive which achieves a strong notion of security. Namely, it achieves CCA anonymity and its security is w.r.t. adaptive adversaries. Moreover, our framework permits expressive signing polices. Finally, we provide some instantiations of the primitive whose security reduces to falsifiable intractability assumptions without relying on idealized assumptions. © 2014 Springer International Publishing.

• Presentation Conference Type: Conference Paper (published)
• Acceptance Date: Feb 24, 2014
• Publication Date: Jan 1, 2014
• Deposit Date: Mar 24, 2017
• Publicly Available Date: Mar 24, 2017
• Journal: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
• Print ISSN: 0302-9743
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 8366 LNCS
• Pages: 327-348
• Book Title: Topics in Cryptology – CT-RSA 2014
• DOI: https://doi.org/10.1007/978-3-319-04852-9_17
• Keywords: attribute-based signatures, security definitions, standard model
• Public URL: https://uwe-repository.worktribe.com/output/821042
• Publisher URL: http://dx.doi.org/10.1007/978-3-319-04852-9_17
• Contract Date: Mar 24, 2017