一种改进的Elgamal有序多重签名方案  

AN IMPROVED SEQUENCE MULTI-SIGNATURE BASED ON ELGAMAL

作　　者：张骏[1] 陈力群[1] 

机构地区：[1]绍兴文理学院计算机系,浙江绍兴312000

出　　处：《计算机应用与软件》2009年第3期258-259,共2页Computer Applications and Software

摘　　要：Li-Yang提出了基于Elgamal有序多重签名方案,但是由于该方案在签名验证过程中没有对成员公钥进行验证,从而容易受到伪造攻击,因此在安全性上有所欠缺。分析上述方案的安全性,提出了一种新的有序多重签名方案。通过加入公钥验证机制,从而能够有效抵抗伪造攻击,并且该改进方案与其他方案相比,在安全性相当的情况下省去一次指数求幂的过程,从而使运算效率更高。The Elgamal-based sequence muhi-signature scheme presented by Li ＆ Yang is weak in security because of easily suffering forgery attack due to no examination upon user＇ s public key during the validating process of the signatures authentication. In this paper it proposes a new sequence multi-signature after analyzing the vulnerable weakness of Li-Yang＇ s scheme. With the mechanism of public key checking supplemented, this scheme can resist the forgery attack and allays attack effectively. In comparison with other schemes ,＇it omits one-order exponentiation operation under the condition of similar security so it is more effective in computation.

关 键 词：数字签名 多重签名 离散对数 伪造攻击 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术] TN918.1[自动化与计算机技术—计算机科学与技术]