Transferable Constant-Size Fair E-Cash

10 years 8 months ago
Transferable Constant-Size Fair E-Cash
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.
Georg Fuchsbauer, David Pointcheval, Damien Vergna
Added 25 May 2010
Updated 25 May 2010
Type Conference
Year 2009
Where CANS
Authors Georg Fuchsbauer, David Pointcheval, Damien Vergnaud
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