Paper 2009/146
Transferable Constant-Size Fair E-Cash
Georg Fuchsbauer, David Pointcheval, and Damien Vergnaud
Abstract
We propose an efficient blind certification protocol with interesting properties. It falls in the Groth-Sahai framework for witness-indistinguishable proofs, thus extended to a certified signature it immediately yields non-frameable group signatures. We use blind certification to build an efficient (offline) e-cash system that guarantees user anonymity and transferability of coins without increasing their size. As required for fair e-cash, in case of fraud, anonymity can be revoked by an authority, which is also crucial to deter from double spending.
Metadata
- Available format(s)
-
PDF
PS
- Publication info
- Published elsewhere. Appears in CANS 2009
- Keywords
- anonymityblind signaturesgroup signaturestransferable e-cashfair e-cash
- Contact author(s)
- fuchsbau @ di ens fr
- History
- 2009-11-26: last of 2 revisions
- 2009-03-31: received
- See all versions
- Short URL
- https://ia.cr/2009/146
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2009/146,
author = {Georg Fuchsbauer and David Pointcheval and Damien Vergnaud},
title = {Transferable Constant-Size Fair E-Cash},
howpublished = {Cryptology ePrint Archive, Paper 2009/146},
year = {2009},
note = {\url{https://eprint.iacr.org/2009/146}},
url = {https://eprint.iacr.org/2009/146}
}
