摘要
针对徐静提出的门限签名方案,构造了一种合谋攻击.通过在部分签名中添加签名成员私有密钥的方法,基于Waters签名方案和Gennaro的分布式密钥生成协议,设计了一种新的无可信中心的门限签名方案。该方案能有效抵抗合谋攻击和伪造签名攻击.最后,对新方案进行了安全性和有效性分析。
A conspiracy attack is presented against the threshold signature scheme proposed by XU Jing.By the means of introducing each group member＇s private key in the partial signature,a new threshold signature without trusted party is proposed and is provably secure in the standard model.This scheme is based on Waters signature scheme and Gennaro＇s distributed key generation protocol.The scheme can successfully resist conspiracy attacks and forgery attacks.Finally,security and efficiency are also analyzed.
出处
《计算机工程与应用》
CSCD
北大核心
2010年第16期105-107,110,共4页
Computer Engineering and Applications
关键词
门限签名
无可信中心
合谋攻击
标准模型
threshold signature
without trusted party
conspiracy attack
standard model
