一个新的高效的基于身份的部分盲签名方案

Novel and efficient ID-based partially blind signature scheme

对最近提出的一种基于身份的部分盲签名方案进行了安全性分析,指出该方案不满足部分盲特性,敌人能在不被察觉的情况下篡改事先协商好的、嵌入到签名中的公共信息。提出了一个新的基于身份的部分盲签名方案,并对该方案的安全性和复杂性进行了分析。提出的方案不仅满足部分盲签名的各种安全性要求,而且能防止敌人篡改公共信息。同时,将提出的方案与其他的基于身份的部分盲签名方案进行了性能比较,结果显示,提出的方案效率更高。

The security of an ID-based partially blind signature scheme recently proposed by Zhang et al.is analyzed,and it is pointed out that Zhang et al.＇s scheme doesn＇t satisfy the partially blind property and the adversary can modify the pre-agreed and embedded common information.A novel ID-based partially blind signature scheme is proposed,and its security and performance are analyzed.The proposed scheme not only satisfies the various security properties of partially blind signature,but also can prevent from the adversary＇s attack of modifying common information.Moreover,the result of comparison the proposed scheme with other ID-based partially blind signature schemes show that the proposed scheme is more efficient.Therefore,the proposed scheme can be used to construct secure and efficient e-cash and e-votlng etc.