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Grid环境下基于实体行为的信任评估模型


□ 刘莉平 葛志辉

  摘 要:面对网格环境的动态性和不确定性,网格安全因素变得尤为重要。提出了一种基于实体行为的信任评估模型,该模型把网格分成若干个自治域,对域内和域间实体的信任关系分别处理,通过引入欺骗惩罚机制保障网格实体的安全性。仿真实验表明,这种信任模型能更加准确地评估实体之间的信任关系,从而有效地解决网格环境中存在的安全问题。

  关键词:网格;安全;信任度

  中图分类号:TP393.08 文献标志码:A

   文章编号:1001-3695(2008)07-2020-03

  

  Trust evaluation model based on entity behaviors in grid environments

  LIU Liping,GE Zhihui

  (School of Information Science & Engineering, Central South University, Changsha 410083, China)

  Abstract:Due to the dynamics and uncertainty of grid environment, trust problem in grid environment is an important topic in currently grid research.This paper proposed a trust evaluation model based on entity behaviors in grid environment, it discriminated the trust relationships between entities in the same autonomous domain and in different domains. The model also led into cheat punishment mechanism, guaranteed the security of the entity in grid.The simulation result shows that it can evaluate the trust relationships between entities more precisely, thus can resolve security problems existed in grid environment more effectively.

  Key words:grid;security;trust

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  0 引言

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