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- W94295509 abstract "因为异构的性质和在格子的地理上驱散的资源的独立管理要求存取控制使用有细密纹理的政策，在格子环境的存取控制是一个挑战性的问题。我们为计算格子(CG-TRBAC 模型) 建立了一个 task-and-role-based 存取控制模型，集成基于角色的存取控制(RBAC ) 和基于任务的存取控制(TBAC ) 的概念。在这个模型，条件限制被定义，明确地定制到工作流管理系统的概念被简化或省略以便角色赋值和安全管理比传统的模型更好适合计算格子；权限与任务地位和系统变量是可变的，并且能动态地被控制。CG-TRBAC 模型被证明灵活并且 extendible。它能实现不同控制政策。它表达最少的特权的安全原则并且执行活跃动态授权。一个任务属性能被扩大在一个真实格子系统满足不同要求。" @default.
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- W94295509 date "2007-01-01" @default.
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- W94295509 title "Task-and-role-based access-control model for computational grid" @default.
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