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CSI
2007

Implementing regular cash with blind fixed-value electronic coins

13 years 7 months ago
Implementing regular cash with blind fixed-value electronic coins
We propose a generic framework for the development of an off-line peer-to-peer electronic payment system with fixed-value electronic coins. The proposed scheme simulates the issuance, circulation and characteristics of conventional cash and satisfies important security, privacy and usability requirements, offering a comparative advantage over other existing solutions. We exploit the strong security characteristics of a typical tamperproof device such as a smart card, and the trust services provided by a Public Key Infrastructure. The electronic coins are fixed, signed data structures that may be distributed, stored and processed by external applications only in their blind (encrypted) form. Non-divisibility is counterbalanced by the low complexity of the proposed solution, which enables the efficient exchange of multiple coins per transaction.
Dimitrios Lekkas, Diomidis Spinellis
Added 13 Dec 2010
Updated 13 Dec 2010
Type Journal
Year 2007
Where CSI
Authors Dimitrios Lekkas, Diomidis Spinellis
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