Welcome to the resource topic for 2004/267
Title:
Separable Linkable Threshold Ring Signatures
Authors: Patrick P. Tsang, Victor K. Wei, Tony K. Chan, Man Ho Au, Joseph K. Liu, Duncan S. Wong
Abstract:A ring signature scheme is a group signature scheme with no group
manager to setup a group or revoke a signer. A linkable ring
signature, introduced by Liu, et al. \cite{LWW04}, additionally
allows anyone to determine if two ring signatures are signed by
the same group member (a.k.a. they are \emph{linked}). In this
paper, we present the first separable linkable ring signature
scheme, which also supports an efficient thresholding option. We
also present the security model and reduce the security of our
scheme to well-known hardness assumptions. In particular, we
introduce the security notions of {\em accusatory linkability} and
{\em non-slanderability} to linkable ring signatures. Our scheme
supports ``event-oriented’’ linking. Applications to such linking
criterion is discussed.
ePrint: https://eprint.iacr.org/2004/267
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