摘要
基于Golle和Juels的工作,提出了一种具有可撤销匿名性的DC-Net匿名通信方案。方案利用双线性对的密钥托管性质,使得用户广播的每个加密消息都以由n个执行成员组成的匿名回收部门作为一个潜在的接收者。当发现危害性匿名信息时,在至少t个回收执行成员的参与下对有关的协议消息进行联合门限解密,就可以追踪到发送者。在运行时几乎没有增加任何计算复杂度和通信复杂度,并且安全性与原方案相当。对DC-Net系统而言,这种方法比已有的利用群签名实现可回收匿名性高效得多。
A DC-Net anonymous communication scheme with revocable anonymity is proposed based on Golle and Juels＇s work. We employ the key escrow property of bilinear parings to make the anonymity revocation authority as an implicit receiver for every encrypted protocol message broadcasted by each user. When a vicious anonymous message being detected, at least t of the authority＇s total n enforcing participants can jointly decrypt some related protocol messages and trace the sender. Compared with the original scheme, our construction nearly adds no computation and communication complexity and has the same security. For DC-Net, it is much more efficient than the traditional method of providing revocable anonymity by utilizing group signatures.
出处
《计算机科学》
CSCD
北大核心
2007年第9期77-79,89,共4页
Computer Science
基金
国家自然科学基金面上项目(60473028)
