摘要
针对P2P应用环境中系统安全问题突出和可用性低的问题,提出了模型MFDTrust。该模型引入多种因素来反映信任的动态性和准确性,在信任的计算中引入激励机制对恶意节点和诚实节点进行非对称的惩罚和奖励,同时引入风险的机制,并用信息熵来量化风险,有效防止协同作弊和诋毁的安全隐患。实验和分析结果表明,这种信任模型能更加精确地评估节点的信任度,能有效的提高系统的交互成功率。
In the P2P network, an important challenge is to how to cope with P2P system security problem and improve the availability. A model MFDTrust is presented. Our model considers many related factors and utilize them to reflect the dynamic and exact trust degree. We will publish the malicious peer and encourage the honest peer by introducing the inspiring mechanism and a definition of risk is presented and quantified using information entropy. By doing this, we can evaluate the trust relationships between peers more precisely. The proposed model can evidently enhance ratio of successful transaction.
出处
《计算机工程与设计》
CSCD
北大核心
2009年第3期569-571,575,共4页
Computer Engineering and Design
基金
国家自然科学基金与中国民用航空总局联合资助项目(66776816)
关键词
信任
信誉
风险
信任模型
网络
安全
trust
reputation
risk
trust model
network
security
