P2P网络的信任评估安全模型研究

摘要

According to the requirement of P2P network security,propose a network security model based on the trust evaluation for P2P network,give a new calculation method of the trust evaluation,and the model's simulation experiment. In this paper,the proposed trust e-valuation model is a peer-to-peer trust model. The model is suitable for the distributed structure of the P2P network,but also adapts to the requirements of maintaining equal,independent,free and heterogeneous for the nodes. The experimental results show that,to build up trust evaluation model of peers in P2P network,the effect is obvious. A node in the P2P network can determine the visiting nodes by the model algorithm,screen and judge the visitor,reject the invasion of malicious nodes,effectively restraining the number of success attack of malicious nodes.%文中针对当前P2 P网络安全的需要，提出了一种信任评估网络安全模型，给出了新的信任评估计算方法和仿真实验。文中提出的信任评估模型是属于对等信任模型，该模型适合P2 P网络的分布式结构，也适应于P2 P网络对节点保持对等、独立、自由和异构的要求。实验结果表明，在P2 P网络中建立起对等的信任评估模型，其效果是明显的。 P2 P网络中的节点能通过模型算法来判断来访节点的情况，通过对来访者真实情况的甄别和判断，能拒绝恶意节点的入侵，有效地抑制了网络中恶意节点的攻击成功次数。