利用Smart卡的可撤销匿名性的电子支付系统

An Anonymity Revoking Electronic Payment System by Smart Card

本文对文［１］ 提出的利用Ｓｍａｒｔ 卡的电子支付系统进行了改进，提出了一种可撤销用户匿名性的支付系统．一方面，它能有效地保护用户的隐私．另一方面，在银行的协助下，一个可信第三方（ 委托人） 可撤销用户的匿名性，因此可有效地防止钱的伪造。

A payment system by smart card proposed by S.Brands is improved,and an anonymity revoking electronic payment system is presented.On the one hand,customer's privacy cannot be compromised by the bank or by the payee.On the other hand,the anonymity can be removed by a trusted third party (trustee) with the help of bank.In this case,the third party can link a payment with corresponding withdrawal and prevent money laundering and black mailing.