基于代理签名的多银行电子现金系统

An Electronic Cash System with Multiple Banks Based on Proxy Signature Scheme

为了实现安全的电子支付,基于代理签名方案和Brands电子现金系统,设计了一种新的多银行电子现金系统.通过分析表明,由于引入了代理签名方案,新方案可以方便地取消发币银行的发币能力,克服了现有的基于群签名的多银行电子现金系统的群成员撤销困难、群成员合伙攻击等问题,是一个安全的电子现金系统.

To achieve secure electronic payment, based on proxy signature scheme and Brands' e-cash scheme, this paper presented a new e-cash system with multiple banks. The analysis shows that the new scheme is secure. By introducing the presented proxy signature scheme, the signing capability of issuing bank can be easily canceled and it avoids some bothersome problems such as member deletion complexity and coalition attacks in the existing e-cash system with multiple banks based on group signature scheme.