群签名在电子现金中的应用

The Applications of Group Signature in E-cash

随着电子商务的发展,选择一种合适的电子支付方式变得越来越重要。电子现金与其他支付方式相比有很多突出的优点,例如离线性,匿名性等。因此电子现金被认为是电子商务中最理想的支付方式。然而在应用电子现金得到广泛应用前有一个难题必须解决,那就是当发生二次支付或者是其他争议时,电子现金或者是使用电子现金的客户是可追踪的。文中提出了一个基于群签名的电子现金方案来解决电子现金系统中的可追踪性。在所提出的方案中,利用群签名的特性成功的解决了可追踪性这一难题。

With the development of e - commerce, a proper electronic payment method is becoming more and more important. Electronic cash has many advantages over other payment methods on the Intemet, such as anonymity and off- line payment. Therefore it is generally considered as an ideal electronic payment method. However, in case of double - spending or other disputes, the traceability of the customer or the cash is always a big problem. This paper proposes a new electronic cash model based on group signature which can solve this problem successfully.