摘要： 对目前P2P网络中的信任模型进行研究，发现信任模型在考虑恶意节点方面存在欠缺。为此，分析恶意节点的恶意行为，综合已有模型的优点，根据信任值的“慢升快降”与直接信任度影响更大的原则，针对控制恶意节点提出一种新的信任度计算模型，该模型中信任度的改变值与每次交易的资源大小有关。仿真实验结果证明，该模型能提升交易成功率。

关键词: 对等网络, 信任模型, 直接信任度, 间接信任度, 恶意节点, 慢升快降

Abstract: Based on the research of the current trust models in P2P network, this paper finds the shortcoming of the malicious nodes in the current models, the malicious behavior of these malicious nodes is analyzed, the advantages of many other models are integrated, according to the principle of “slow raising and fast descending” and direct trust has greater impact, especially considering the control of some malicious nodes, one new trust model is put forward. In this model, the trust value is related to the size of the resource after each transaction. Simulation experimental result shows the validity and superiority of the new model, this model can make the transaction success rate enhance greatly.

Key words: P2P network, trust model, direct trust degree, indirect trust degree, malicious node, slow raising and fast descending

中图分类号: 

• TP309