Abstract
Most electronic cash (e-cash) based payment systems that have been proposed do not possess the property of transferability. Transferability in an e-cash based system means that when a payee receives an electronic coin in a transaction he may spend it without depositing the coin first and getting a new coin issued from a bank. Usually electronic coins that are transferred in a transaction have a lifetime of the trans-action itself. In this paper, we propose a payment system where coins can be transferred over multiple hands, spread over various transactions, similar to physical cash. Detection or prevention of double spending of coins is a critical issue in online e-cash payment systems. In our system the verification is distributed across multiple entities as opposed to the case of a coin-issuing entity or a central bank alone being responsible for the verification. A resolution mechanism for handling disputes is also presented. The proposed system provides guarantees of anonymity, fairness and transferability.
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© 2000 Springer-Verlag Berlin Heidelberg
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Sai Anand, R., Madhavan, C. (2000). An Online, Transferable E-Cash Payment System. In: Roy, B., Okamoto, E. (eds) Progress in Cryptology —INDOCRYPT 2000. INDOCRYPT 2000. Lecture Notes in Computer Science, vol 1977. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44495-5_9
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DOI: https://doi.org/10.1007/3-540-44495-5_9
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