基于时间约束的角色访问控制模型研究

Temporal Role-Based Access Control Model

基于角色的访问控制模型的研究工作近年来得到了广泛的重视,但主要工作均立足于与时间特性无关的其他方面,在现实生活中有很多与时间有关的访问控制不能够得到很好解决,特别是一些要求时间性很高或者周期性规律很强的访问控制,都需要进行时间约束的控制。为此形式化描述了一个引入时间后的角色访问控制,采用周期时间约束的方法描述了时间约束和时间约束模型,并构建了一个关于时间约束的角色访问控制系统,解决了一系列与时间有关的角色访问控制问题,增强了访问控制的力度。

The research work of RBAC is greatly emphasized in recent years. However, the main work focuses on some characters which have nothing to do with the time character. In the real life many access control with the time related cannot obtain very good solution,especially some request very high timeliness or the very strong rule periodic access control . The article describes the RBAC with time character, the temporal authorization and the temporal role - based access control model are presented by cycle restraint. And constructed one role access control system about the time restraint, solved a series problem of time and the role of the access control, enhanced the efforts of access control.