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中文摘要：
为解决网络中多安全域间的访问控制难题,提出一种基于角色和信任度的访问控制模型.将角色和信任度相关联,根据用户角色等级定义角色评价权重,利用角色评价权重和角色行为计算其信任度.在引入直接信任度、推荐信任度和反馈信任度的基础上,通过调节各自的评价权重参与综合信任度评价,实现了细粒度的访问控制.在局域网环境下利用web应用系统构建具有多安全域的访问控制模型,并进行了仿真实验,实验结果证明该模型具有较高的安全性、可扩展性和灵活性.
英文摘要：
To solve the problem of access control among different security domains in networks, an access control model is presented based on role and trust degree. Each role associates with a trust value, the role evaluation weights are defined in terms of user＇ s role rank and the trust degree is calculated according to the role evaluation weights and role behavior. Direct trust degree, recommendation trust degree and feedback trust degree are introduced in this model to achieve fine-grained access control. The three trust degrees mentioned above participate in the comprehensive trust degree evaluation by adjusting their weights. Simulation is conducted in local area network environment in which a web system is used to construct an access control model with multi-domain. Experiment demonstrates that the model is of higher security, expansibility and flexibility.
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