基于信任值的P2P网络访问控制模型

对等网络（P2P）已成为一个非常受欢迎的信息交流的新模式。然而,P2P网络环境的分散的和匿名的特点使得对共享信息的控制变得更加困难,而这是无法通过传统的访问控制方法完成的。首先提出P2P网络环境中的访问控制需求,然后提出了一种基于信任值的P2P网络的访问控制模型。模型整合了信任和推荐模式、公平参与原则和访问控制模式,并将其应用于P2P文件共享系统。仿真分析表明,访问控制模型能够有效识别恶意节点,使P2P网络中合作节点具有较高的成功请求率。

A Trust based Access Control Model for P2P Networks

Peer-to-peer（P2P） have become popular as a new paradigm for information exchange.However,the decentralized and anonymous characteristics of P2P environments make the task of controlling access to sharing information more difficult,which cannot be done by traditional access control methods.In this paper,we identify access control requirements in such environments and propose a trust based access control model for P2P networks.The model integrates aspects of trust and recommendation models,fairness based participation schemes and access control schemes,and applies them to P2P file-sharing systems.The simulation and analyses show that the proposed access control model can distinguish good peers and make them happy with the high ratio of the success query.