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随着Internet的逐渐发展,P2P网络(Peer to Peer)以其独特的特点飞速发展,逐渐成为Internet中最为重要的应用系统之一。因为P2P网络有开放和匿名的特点,所以任何人在任何时间都可以通过加入网络查找、获取资料还可以为他人提供帮助、服务。但是,P2P的文件共享就像是人与人之间的关系,网络相互之间存在着各种各样的信任问题。由于相互各个节点之间缺乏信任,节点相互之间恶意结束服务(资源上传),使网络的利用率低下,节点之间的信任就显得尤为重要。而且,恶意节点即便因为恶意行为不能发出资源共享的请求,但是依然可以从其他节点处获得共享的资源文件。因此,本文根据P2P网络安全性现状分析和P2P信任和信誉机制面临的问题等方面对P2P网络双向信任机制进行了探究,希望能够提高网络的利用率,增强各个节点之间的信任度,使各个节点之间建立有效的互信关系。
With the gradual development of the Internet, Peer to Peer (P2P) has developed rapidly with its unique features and gradually becomes one of the most important application systems in the Internet. Because of the open and anonymous nature of P2P networks, anyone can access, search and access information anytime and anywhere. It also helps and services others. However, peer-to-peer file sharing is like the relationship between people, there are all kinds of trust between networks. Due to the lack of mutual trust between the various nodes, malicious termination of services between nodes (resource upload), the network utilization is low, the trust between nodes is particularly important. Moreover, a malicious node can still obtain shared resource files from other nodes even though it can not issue a resource sharing request because of malicious behavior. Therefore, this paper explores the two-way trust mechanism of P2P network based on the current situation of P2P network security and the problems that P2P trust and reputation mechanism face, and hopes to improve the utilization rate of network and enhance the trust between nodes The establishment of effective mutual trust between nodes.