一种新的基于身份的公平离线电子现金方案

为了设计安全、高效的电子现金方案,基于受限部分盲签名提出了一种新的基于身份的公平离线电子现金方案。该方案使用知识证明签名有效地构造了重复花费检测协议,并实现了货币追踪协议和货币所有者追踪协议,给出了不可伪造性、匿名性、公平性和有效性证明。与已有方案相比,该方案能够有效地防止账户所有者进行重复消费,并且使用了较少的高耗时运算,提款协议和支付协议具有较高的计算效率。

New ID-based fair off-line electronic cash scheme

In order to design a secure and efficient electronic cash scheme, this paper proposed a new ID-based fair off-line electronic cash scheme based on restrictive partially blind signature. The scheme effectively constructed double-spending detection protocol by using signature of proof of knowledge and achieved coin tracing protocol and owner tracing protocol. The scheme was proved to be unforgeable, anonymous, fair and effective. Compared with the existing scheme, the proposed scheme can prevent the double-spending of account holder and has obvious advantages in withdrawal protocol and payment protocol by using less high time-consuming operation.