Paper 2004/267
Separable Linkable Threshold Ring Signatures
Patrick P. Tsang, Victor K. Wei, Tony K. Chan, Man Ho Au, Joseph K. Liu, and 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.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. An extended abstract of this paper was in Indocrypt'04.
- Keywords
- ring signatureslinkabilityseparability
- Contact author(s)
- pktsang3 @ ie cuhk edu hk
- History
- 2004-11-18: revised
- 2004-10-21: received
- See all versions
- Short URL
- https://ia.cr/2004/267
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2004/267,
author = {Patrick P. Tsang and Victor K. Wei and Tony K. Chan and Man Ho Au and Joseph K. Liu and Duncan S. Wong},
title = {Separable Linkable Threshold Ring Signatures},
howpublished = {Cryptology {ePrint} Archive, Paper 2004/267},
year = {2004},
url = {https://eprint.iacr.org/2004/267}
}
