Paper 2004/027 Original: eprint.iacr.org/2004/027 ↗
Linkable Spontaneous Anonymous Group Signature for Ad Hoc Groups
Abstract
We present a linkable spontaneously anonymous group (LSAG) signature scheme (alternatively known as linkable ring signature scheme) satisfying the following three properties. (1) Anonymity, or signer indistinguishability. (2) Linkability: That two signatures by the same signer can be linked. (3) Spontaneity: No group secret, therefore no group manager or group secret sharing setup. We reduce the security of our scheme to well-known problems under the random oracle model. Using the scheme, we construct a new efficient one-round e-voting system which does not have a registration phase. We also present a new efficient reduction of famous rewind simulation lemma which only relies on elementary probability theory. Threshold extensions of our scheme are also presented.
Metadata
- Available format(s)
PDF- Publication info
- Preprint.
- History
- 2004-05-01: last updated
- 2004-02-02: published
- Short URL
- https://ia.cr/2004/027
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2004/027,
author = {Joseph K. Liu and Victor K. Wei and Duncan S. Wong},
title = {Linkable Spontaneous Anonymous Group Signature for Ad Hoc Groups},
howpublished = {Cryptology {ePrint} Archive, Paper 2004/027},
year = {2004},
url = {https://eprint.iacr.org/2004/027}
}