Master of Science (Hons.)
School of Information Technology and Computer Science
Nguyen, Van Khanh, Electronic cash: cryptography & distributed systems, Master of Science (Hons.) thesis, School of Information Technology and Computer Science, University of Wollongong, 1997. http://ro.uow.edu.au/theses/2904
Electronic Payment Systems that deal with daily shopping and payment over the Internet are one of the most important concerns of today's electronic commerce. There is a large body of research in this field, and in particular, on electronic cash (e-cash) systems. In e-cash systems, protecting customer's privacy has received much attention and many challenging problems relating to the trade-off between multi-party security and system efficiency are proposed. This thesis gives a brief survey of e-cash systems. We investigate various problems raised in building secure and efficient e-cash systems. This includes efficient off-line e-cash, perfect anonymity, revocable anonymity, combining the advantages of on-line and off-line approaches and wallet loss recovery.