【摘要】 对一个改进的基于中国剩余定理的群签名方案进行安全性分析,指出方案不可抵御伪造攻击,群中心或群中成员即使不知道其他成员的签名密钥也可伪造其签名;同时指出验证者在验证签名有效性的同时也可以判断出签名者,不满足群签名的性质,因此不是一个真正意义上的群签名.更多还原

【Abstract】 This paper analyzes an improved group signature scheme based on Chinese remainder theorem,and pointed out that the scheme could not resist forgery attack,the group center or the group member could forge the others’ signature even if didn’t know their private key,Also the scheme isn’t a real sense of group signature because that the verifier could judge the signer when he verified the group signature,it didn’t satisfy the property of group signature.更多还原