Li-Yang多重签名方案的安全性分析及改进  

Security analysis of Li-Yang's multi-signature scheme and its improvement

作　　者：张骏[1] 

机构地区：[1]绍兴文理学院计算机系,浙江绍兴312000

出　　处：《计算机工程与应用》2009年第20期125-128,139,共5页Computer Engineering and Applications

摘　　要：Li-Yang提出的顺序多重签名方案由于执行效率高、实现相对简单、适应性强,因而有着广泛的应用。但是该方案容易受到伪造攻击与相邻成员的混乱签名,因此在安全性上有所欠缺。通过加入公钥验证机制,从而能够有效抵抗伪造攻击和联合攻击。并且该改进方案与其他方案相比,在安全性相当的情况下,运算效率更高。Li-Yang’s sequence multi-signature scheme was relatively safe and effective,so it was used comprehensively.But this scheme was not safe enough because the scheme was very easy aggressed by the forgery attack and the two neighbour users could exchange digital signature.This paper shows a new sequence multi-signature with checking pubic key which can resist the forgery attack and the ally attack,compared with other schemes,its operation is more effective.

关 键 词：数字签名 多重签名 公钥检验 伪造攻击 混乱签名 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]