| 基于全局信任度的多层分组P2P信任模型 |
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| 引用本文： | 孙知信,唐益慰.基于全局信任度的多层分组P2P信任模型[J].通信学报,2007,28(9):133-140. |
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| 作者姓名： | 孙知信 唐益慰 |
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| 作者单位： | 1. 南京邮电大学,计算机学院,江苏,南京,210003;南京邮电大学,计算机技术研究所,江苏,南京,210003
2. 南京邮电大学,计算机学院,江苏,南京,210003 |
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| 基金项目： | 国家自然科学基金;江苏省科攻关基金;中兴通讯科研项目;华为技术有限公司基金;南京邮电大学攀登计划基金 |
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| 摘 要： | 通过多层分组策略,利用组中信任度、全局信任度和个人评价制度,提出基于全局信任度模型的新算法。对于对等节点的每一次P2P连接,算法会在交互前对每个可能交互的信任度进行合理评价,使节点事先得知交互的信任度参考值,可以由此采取相应策略提高交互安全性。经过算法分析和仿真测试表明,该模型的全局信任度具有迭代收敛性,对交互的信任度评价可信度高,对P2P安全性上存在的问题具有较大的改进。
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| 关 键 词： | 信任模型 对等网络 多层分组 全局信任度 |
| 文章编号： | 1000-436X（2007）09-0133-08 |
| 修稿时间： | 2007-02-05 |
Multilayer and grouping P2P trust model based on global reputation |
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| SUN Zhi-xin,TANG Yi-wei.Multilayer and grouping P2P trust model based on global reputation[J].Journal on Communications,2007,28(9):133-140. |
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| Authors: | SUN Zhi-xin TANG Yi-wei |
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| Affiliation: | 1, College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003, China; 2. Institute of Computer Research, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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| Abstract: | Through multilayer grouping strategy,using group trust degree,global trust degree and individual evaluation system,a new algorithm based on global trust degree model was put forward.To every P2P interaction,the algorithm evaluated the trust degrees of every possible interaction reasonably in order to make interacting nodes to know the refer-enced trust degree value in advance so as to take corresponding policy to protect them.Mathematic analyses and simula-tions results show that the proposed algorithm has convergence characteristic,high reliability on interacting trust degree evaluation,and has better improvement on existed P2P security problems. |
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| Keywords: | trust model peer-to-peer network multilayer grouping global reliability |
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