## CryptoDB

### Paper: Separable Linkable Threshold Ring Signatures

Authors: Patrick P. Tsang Victor K. Wei Tony K. Chan Man Ho Au Joseph K. Liu Duncan S. Wong URL: http://eprint.iacr.org/2004/267 Search ePrint Search Google 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.
##### BibTeX
@misc{eprint-2004-12234,