摘要： 信任关系管理是Peer-to-Peer信任模型的重要部分，在分布式环境中，如何安全存放和访问信任值是一个难以解决的问题。本协议采用可验证的、无可信中心的(k, n)门限密码系统产生系统的公/私密钥，征集k个管理者为系统中的用户生成证书，管理协议为用户提供信任值的匿名存储和访问服务。分析显示协议能极好地抵御各种攻击。

关键词: 信任管理, 对等网络, 门限密码系统, 匿名性

Abstract: Managing trust relationships are important part of trust model. An important challenge in managing such trust relationships is to design a protocol to secure the placement and access of these trust ratings. In this protocol, a verifiable threshold cryptosystem without a trusted center is applied to generate system public/private keys. K managers can generate certification for peer. The protocol provides an anonymous server for peer. The security analysis shows that the protocol has desirable features of anonymity, reliability, accountability and is secure in the presence of a variety of possible attacks.

Key words: trust management, Peer-to-Peer, threshold cryptosystem, anonymity

中图分类号: 

• TP393