摘要
在传统群签名方案中,群内所有的成员都拥有相同的权限,而门限权签名又只针对群中一定数量的用户一起签名才有效。文中利用这两种思想提出的一个新的类似群签名的方案解决了这一矛盾。和已有的群签名方案相比,该方法具有如下优点:(1)设置了群内用户的权限,并且安全性得到一定的保障;(2)群内用户进行签名时不会发生越级签名。
In the traditional group signature, all the members have the same rights to sign, and the threshold group signatme only effect on a certain of the members sign together. The paper gives a new group signature scheme based on the two ideas. Comparing with traditional group signature the new scheme has some advantages, （1） scheme allows the members in the group have the different rights, and can ensure security; （2） the members in this group can not sign with skipping a grade
出处
《计算机技术与发展》
2007年第1期177-178,182,共3页
Computer Technology and Development
关键词
群签名
离散对数
密钥
group signature
discrete logarithm
private key
