A Novel Micropayment Scheme with Complete Anonymity

Authors:
Xin Zhao;Yuqin Lv;Wenxin He
Affiliations:
-;-;-
Venue:
IAS '09 Proceedings of the 2009 Fifth International Conference on Information Assurance and Security - Volume 01
Year:
2009

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Abstract

The customer’s privacy may be exposed in most existing micropayment schemes. To protect the privacy of a customer’s identity, according to the definitions of anonymity given in this paper, a novel micropayment scheme (called xPay) with security, efficiency and complete anonymity is proposed. The scheme, based on hash chain, introduces both the debit-based payment mode and the pseudonym mechanism using prepaid cards, with the purpose of complete anonymity. In addition, in order to control the operation cost, a lower bound of the requesting coin quantity during one exchange, redemption or transfer procedure is specially set, and this setting is employed in the xPay scheme.