P2P环境下一种角色与云理论的信任模型  

Trust Model for Peer Role and Cloud Theory in P2P Networks

作　　者：吴军[1] 洪薇[1] 卢虹宇[1] 白光伟[1] 

机构地区：[1]南京工业大学电子与信息工程学院,南京211816

出　　处：《科学技术与工程》2014年第27期84-89,111,共7页Science Technology and Engineering

基　　金：国家自然科学基金(60673185)资助

摘　　要：在P2P网络中,信任模型是保障网络信息安全的关键,然而现有的信任模型不能完整地体现出信任的主观性、随机性和模糊性。利用云模型的不确定性和模糊性,提出了一种正确理解和定义信任的方法,结合定性推理机制来完成信任评估。云模型在处理定性与定量之间的转换具有突出特点,文中提出了一种基于角色与云理论信任评价(RCTrust)的方法。实验分析表明:通过分布式P2P网络节点间服务合作的实验,验证了基于角色与云理论信任评价的合理性和可行性。该模型具有较高的合作成功率与较强的抗攻击能力。In peer-to-peer network,the key to Network and information security lies in trust model. However,existing trust models can not reflect a complete trust of subjectivity,fuzziness and randomness. through the use of uncertainty and fuzziness of cloud model,the correct method to properly understand and define TRUST was proposed——the use of qualitative reasoning mechanisms to complete trust evaluation. Cloud model presents outstanding features in dealing with qualitative and quantitative conversion. a method based on trust model for peer role and cloud theory evaliation（ RCTrust） was proposed. Experimental results show that with cooperation in distributed P2 P network,it＇s reasonable and practical of the evaluation of peer role and cloud theory trust model. And cloud model malice-resistant behavior demonstrates this model has a higher rate for success and stronger anti-attack capability.

关 键 词：P2P 节点角色 云模型 信任模型 定性推理 

分 类 号：TP393.0[自动化与计算机技术—计算机应用技术]