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Australasian Computer Science Conference (ACSC '01)
Untraceable Off-line Electronic Cash Flow in E-Commerce
Gold Coast, Queensland, Australia
January 29-February 02
ISBN: 0-7695-0963-0
H. Wang, University of Southern Queensland
Y. Zhang, University of Southern Queensland
Electronic cash has been playing an important role in electronic-commerce. One of the desirable characteristics is its traceability, which can prevent money laundering and can find the destination of suspicious withdrawals. In this paper we develop a new scheme for untraceable electronic cash, in which the bank involvement in the payment transaction between a user and a receiver is eliminated. The user withdraws electronic "coins" from the bank and uses them to pay to a receiver. The receiver subsequently deposits the coins back to the bank. In the process the user remains anonymous, unless s/he spends a single coin more than once (double spend). The security of the system is based on DLA (Discrete Logarithm Assumption) and the cut-and-choose methodology.
Index Terms:
Electronic-cash, Hash function, Random oracle model, Cut-and-Choose technique, DLA.
Citation:
H. Wang, Y. Zhang, "Untraceable Off-line Electronic Cash Flow in E-Commerce," acsc, pp.191, Australasian Computer Science Conference (ACSC '01), 2001
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