一种新的基于Meta-ElGamal的多重签名方案  

A New Multisignature Scheme Based on Meta-ElGamal

作　　者：王建东[1] 邹惠[1] 李霞[1] 崔忠强[1] 

机构地区：[1]石家庄经济学院信息工程系,石家庄050031

出　　处：《计算机与数字工程》2006年第8期161-163,共3页Computer & Digital Engineering

摘　　要：提出了一种新的基于Meta-ElGamal的多重签名方案,该方案改进了基于Meta-ElGamal方案的多重签名方案中的密钥生成部分和签名生成部分,既弥补了原方案中存在的多个签名者如果生成自己的密钥时相互合作就能达到日后否认消息签名的漏洞,又避免了单个成员控制群体私钥,从而能以群体的名义伪造对任何消息多重签名的攻击。There are two attacks on Meta- ElGamal multisignature. In one attack, the attackers can deny that they have taken part in process of signing some messages with others, in the other attack, a single malicious group member can control the group secret key, and hence he can generate valid multisignature for any message on the behalf of the whole group without the help of other members. In this paper, the modifications are made for the key generation and signature generation of the scheme, which can efficiently avoid the two attacks.

关 键 词：Meta—ElGamal 多重签名 离散对数 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]