计算机与现代化

• 信息安全 • 上一篇    下一篇

基于危机事件的自适应访问控制模型

  

  1. (南京航空航天大学计算机科学与技术学院,江苏南京211106)
  • 收稿日期:2019-01-29 出版日期:2019-08-15 发布日期:2019-08-16
  • 作者简介:杨阳(1994-),男,安徽铜陵人,硕士研究生,研究方向:系统安全性和访问控制,E-mail: yychopper@163.com; 曹彦(1985-),女,河南许昌人,博士研究生,研究方向:信息安全。
  • 基金资助:
    国家自然科学基金资助项目(61772270)

Adaptive Access Control Model Based on Hazardous Events

  1. (College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China)
  • Received:2019-01-29 Online:2019-08-15 Published:2019-08-16

摘要: 访问控制作为一种限制用户对资源使用的技术,常用于应用系统中提供一定的资源保护能力,通过对资源请求者的自身条件、使用条件、使用义务等要素进行约束,来限制资源请求者的行为。在复杂系统中,通常使用访问控制技术来对系统中的可访问资源进行管理。当系统中有危机事件发生时,传统的访问控制模型难以给动态变化的系统环境提供足够的灵活程度。本文提出一种基于危机事件的自适应访问控制模型,接着给出模型的动态调整方法,最后基于案例对模型动态调整过程中可能产生的策略冲突问题进行分析,确定策略冲突的消解规则。

关键词: 访问控制, 危机事件, 自适应调整, 策略冲突消解

Abstract:  Access control is a technology that restricts the use of resources. It is often used to provide certain resource protection capabilities in application systems. It restricts the behavior of resource requesters by restricting their own conditions, use conditions and use obligations. In complex systems, access control technology is usually used to manage the accessible resources. When there are hazardous events in the system, traditional access control model can not provide enough flexibility for the dynamic system environment. In this paper, an adaptive access control model based on hazardous events is proposed, then the dynamic adjustment method of this model is given. Finally, the possible policy conflicts in the process of dynamic adjustment of the model are analyzed based on a case, and the resolution rules of the policy conflicts are determined.

Key words: access control, hazardous events, adaptive adjustment, policy conflict resolution

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