一种基于双线性对的门限签名方案

通过对现有门限签名方案的分析,发现很多门限签名方案存在安全上的缺陷,特别是在抵抗内部恶意成员的攻击方面.使用双线性映射工具,提出基于双线性对的门限签名方案.该方案通过可验证的方法来防止秘密分发者和秘密共享者的欺骗行为,利用可信中心参与和增加签名者的身份信息来阻止抵抗群体内部成员的合谋攻击,克服了门限签名方案上的弱点.同其他方法进行分析对比,结果表明,该方案还具有验证简单,个体密钥能重复使用,效率高,安全性强的特点.

A threshold signature scheme based on bilinear pairings

By means of analyzing the threshold schemes available,it was found that there were a lot of deficiency in connection with the safety in the threshold scheme,especially the protection from the attack of inner malicious members.A threshold signature scheme based on the bilinear mapping tool was proposed.The cheating behavior of crypto-scatterer and crypto-sharer could be prevented by using the verifiable method of this scheme.The scheme could also prevent conspiracy attack of inner members of a group by using...