两个标准模型下门限签名方案的安全性分析  

Cryptanalysis of Two Threshold Signature Schemes in Standard Model

作　　者：黄梅娟[1] 

机构地区：[1]宝鸡文理学院数学系,宝鸡721013

出　　处：《计算机与数字工程》2013年第8期1318-1320,共3页Computer & Digital Engineering

摘　　要：为了提高门限签名方案的计算效率,石贤芝等(2013年)和张建中等(2012年)分别提出了标准模型下高效的门限签名方案。对两个方案构造了两个有效的伪造攻击:攻击者在不知道用户的私钥情况下,可以伪造用户对任何消息的有效门限签名。最后分析了方案不安全的原因。To improve the computational efficient in the threshold signature scheme, Shi Xian-zhi et al. proposed an efficient threshold signature scheme in standard model in 2013, and a similar scheme was proposed by Zhang Jianzhong et al. in 2012. Two algorithms were constructed to attack the two schemes. In these attacks, the attacker could forge a valid threshold signature on any message on behalf of the user without knowing the signing key of the user. The causes of attacks were further analyzed in the end.

关 键 词：门限签名 标准模型 伪造攻击 双线性映射 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]