基于层次信任模型的P2P文件污染防治

P2P网络能够高效地共享文件,但是必须控制污染文件的传播以促使文件有效分发。在分析各类信任模型的特点和节点行为特征的基础上,提出了基于局部和全局的层次信任模型。该模型采用邻近原则,把具有相似信任值的结点分组,按照信任度划分节点域并加入了奖励因子。仿真实验证明,该模型可以有效地降低污染的成功率,从而在一定程度上缓解了P2P网络中严峻的文件污染问题。

The Defense of P2P File Pollution Based On Hierarchical Trust Model

P2P network can share files efficiency, but we must control transmission of the file polluted for promoting the file distribution availability. After analyzing the character of kinds of trusted models and nodes behavior, this paper provides the Hierarchical Trust Model based on the local and globe trust model. The model use the nearest principle to separate the node having the similar credit, divide node region according to the trusted degree and add into encouragement factor. Under the simulating experimen...