An Anonymous Digital Cash and Fair Payment Protocol Utilizing Smart Card in Mobile Environments
Fair mobile payment protocols ensure that both participants can engage in the exchange without the risk of suffering a disadvantage (e.g., losing their money without receiving anything for it). In general,fair payment protocols require the continuous availability of an external trusted third party(TTP), a dedicated site which is trusted by both participants. In this paper we present solutions to the fair exchange problem in mobile environments, where customers frequently disconnect from the network and thus continuous availability of the external TTP is not given. Our approach utilizes smart card on the customers side partly taking over the duties of the TTP. A novel digital cash protocol is also proposed. In the protocol we implement a distributed anonymity provider agent with smart card on the customers side. Thus accountable anonymity is guaranteed. Compared with Chaums and Wangs schemes its communication cost and customers computation are more reduced. The proposed digital cash are proved to be unreusable, unexpandable, untraceable, and unforgeable.
Ling Zhang Jian ping Yin Yubin Zhan
School of Computer, National University of Defense Technology, Changsha, Hunan, 410073, China
国际会议
第五届网格与协同计算国际会议(The Fifth International Conference on Grid and Cooperative Computing GCC 2006)
长沙
英文
335-340
2006-10-21（万方平台首次上网日期，不代表论文的发表时间）