若干部分盲签名方案的密码学分析和改进
胡小明;王见;杨寅春
【期刊名称】《计算机工程与设计》 【年(卷),期】2012(033)010
【摘要】对最近提出的若干部分盲签名方案进行了安全分析,指出这些方案不像宣称的那样是安全的,存在签名请求者非法篡改事先协商好的公共信息的攻击,并对出现这种篡改攻击的原因进行了分析.分别对这些存在安全缺陷的方案进行了改进,并对改进方案的正确性、安全性和有效性进行了分析.分析表明,改进的方案在不降低原方案效率的情况下是安全的.%Some partially blind signature schemes proposed recently are analyzed, and points out that these schemes are not secure as they claimed, and there exists an attack that a requester can change illegally pre-agree common information, and the reason why these schemes suffer from the attack is analyzed. Then, some improvement is proposed to overcome the security drawback of these schemes respectively, and correctness, security and efficiency of these improved schemes are analyzed. The analysis shows that these improved schemes are secure without decreasing efficiency of original schemes.
【总页数】6页(3757-3761,3766)
【关键词】盲签名;部分盲签名;无证书签名;安全分析;双线性对 【作者】胡小明;王见;杨寅春
【作者单位】上海第二工业大学计算机与信息学院,上海201209;上海第二工业
若干部分盲签名方案的密码学分析和改进
