基于角色访问控制中职责约束组合的一种扩展
An Extension for Combination of Duty Constraints in Role-Based Access Control
摘要：
在众多的访问控制模型中，基于角色的访问控制（RBAC）是一种非常有用的访问控制模型，在许多计算机系统中都有应用。最近，该模型引入了静态职责组合（SCD）和动态职责组合（DCD）约束来处理依赖角色。这些角色必须一起使用，可以被认为是冲突角色的对立点。在本文中，我们提出了几种新类型的SCD和DCD约束。此外，我们引入了强依赖角色，并定义了新的SCD约束为这些类型的角色SCD与共同的项目和SCD与工会项目。此外，我们提出了一个扩展的SCD约束存在的层次结构。
英文摘要：
Among access control models, Role Based Access Control (RBAC) is very useful and is used in many computer systems. Static Combination of Duty (SCD) and Dynamic Combination of Duty (DCD) constraints have been introduced recently for this model to handle dependent roles. These roles must be used together and can be considered as a contrary point of conflicting roles. In this paper, we propose several new types of SCD and DCD constraints. Also, we introduce strong dependent roles and define new groups of SCD constraints for these types of roles as SCD with common items and SCD with union items. In addition, we present an extension for SCD constraints in the presence of hierarchy.
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