【摘要】 针对普适计算跨区域访问控制中的委托授权限制问题,在角色权限分配中根据权限的重要程度关联信任阈值和访问时间限制,设计了一种基于角色的访问控制(RBAC)模型的以角色权限为委托单位的受限委托方法。通过证明执行模型与委托条件的一致性,表明该方法能够满足普适计算权限委托限制的要求,可以灵活地支持基于角色权限的临时性和可执行角色集的依赖性。更多还原

【Abstract】 Considering the permission delegation in inter-domain access control for pervasive computation environments,a role-permission based delegation method was given based on Role-Based Access Control(RBAC) model.The trust and time constraints were accounted by the importance of the permission.The consistency of the executing model and the delegation conditions was proved.It is shown that the method can satisfy the requirements of permission delegation in pervasive computing environments,and realize the temporal constraints and the dependence on executable role sets.更多还原