Welcome to the resource topic for 2020/1403
Title:
A q-SDH-based Graph Signature Scheme on Full-Domain Messages with Efficient Protocols
Authors: Syh-Yuan Tan, Ioannis Sfyrakis, Thomas Gross
Abstract:A graph signature scheme is a digital signature scheme that allows a recipient to obtain a signature on a graph and subsequently prove properties thereof in zero-knowledge proofs of knowledge. While known to be expressive enough to encode statements from NP languages, one main use of graph signatures is in topology certification and confidentiality-preserving security assurance. In this paper, we present an efficient and provably secure graph signature scheme in the standard model with tight reduction. Based on the MoniPoly attribute-based credential system, this new graph signature scheme offers zero-knowledge proofs of possession of the signature itself as well as confidentiality-preserving show proofs on logical statements such as the existence of vertices, graph connectivity or isolation.
ePrint: https://eprint.iacr.org/2020/1403
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