基于云模型的网格用户主观信任管理模型  

Cloud Model-Based Subjective Trust Management Model for Grid Users

作　　者：韦凯[1] 刘欣欣[1] 

机构地区：[1]华南理工大学计算机科学与工程学院,广东广州510006

出　　处：《华南理工大学学报（自然科学版）》2011年第2期81-87,94,共8页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目(10451064101005826);华南理工大学中央高校基本科研业务费专项资金资助项目(2009ZM0112)

摘　　要：传统网格计算的信任管理模型中,网格服务提供者(GSP)难以有效评估和管理数量庞大的用户的信任度,且难以抵御Whitewash攻击并保障自身安全.为此,文中提出一种基于云模型的网格用户主观信任管理模型.该模型由自治域信任代理(UTA)管理域内用户的信任度,GSP则利用云模型评估UTA.实验结果表明,该模型符合网格架构的结构特点和信任的模糊、随机属性,克服了传统信任推荐方法的缺点,使GSP对网格用户的信任评估更加准确、合理.In the traditional trust management model of grid computing,it is difficult for grid service providers（GSP） to effectively evaluate and manage the trust degree of a huge number of grid users,and to resist Whitewash attack and ensure the safety.In order to solve these problems,a cloud model-based subjective trust management model for grid users is proposed.In this model,the trust degree of users in the grid domain is managed by the user trust agent（UTA）,and GSP only needs to evaluate the trust of UTA with the help of cloud model.Experimental results show that the proposed management model,in accordance with grid architecture as well as with the fuzziness and uncertainty of trust,overcomes the disadvantages of the traditional trust recommendation method and makes the evaluation of trust more accurate and reasonable.

关 键 词：网格计算 信任管理 自治域 云模型 Whitewash攻击 

分 类 号：TP31[自动化与计算机技术—计算机软件与理论]