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一种灵活的访问控制策略及其应用研究赵 彬 王亚弟 韩瑞生 李立新


  摘 要:提出了一种声明式的、面向对象的、灵活访问控制策略的形式化描述、决策算法和实施框架。与传统访问控制策略相比,它包含授权类型、主体、权限、限制、影响等策略元素,能够更加精确地描述各类控制需求;同时,提出的策略决策算法和实施框架能适应决策环境的动态变化,有效满足复杂分布式系统的访问控制需求;最后,作为应用的例子,介绍了这种策略和实施框架在分布式园区网中的实现和应用情况。

  关键词:灵活访问控制策略; 访问控制实施框架; 分布式应用

  中图分类号:tp309.2 文献标志码:a

   文章编号:10013695(2008)09283103

  flexible access control policy and its application research

  zhao bin1, wang yadi2, han ruisheng1, li lixin1

   (1. institute of electronic technology, pla information engineering university, zhengzhou450004, china; 2. pla information engineering university, zhengzhou450001, china)

  abstract:this paper presented a flexible, objectoriented and declarative access control policy, its decisionmaking algorithm and enforcement framework. compare to traditional access control policies, it consisted of five componentsauthorization type, subject, permission, constraint and effect, which made it flexible enough to express a variety of access control requirements. presented decisionmaking algorithm and enforcement framework were adaptived to dynamic environment change, and could efficiently satisfy the requirement for distributed application. as an example of such application, also discussed its implementation and application in a distributed campus network system.

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