摘要
应用系统的用户数量和系统角色越来越多,使得角色间的互斥也更加频繁。而角色互斥作为一种实施职责划分的有效手段,在基于RBAC模型的访问控制中具有非常重要的作用。目前关于角色互斥的研究还不够完善,为了更好地处理角色间的互斥关系,文中对RBAC下的角色互斥进行了研究,通过分析角色的本质列举了角色互斥的各种类型,并在此基础上设计了角色约束表,通过形式化的方法给出了角色约束表的组建和角色互斥撤消的方式。最后实现了一个带角色互斥检测的角色分配控制器,能够很好地根据角色互斥关系来进行角色分配,并成功应用到了一个简单系统中。
The number of users and system role in application system is more and more,making the characters exclusion more frequent. Mutually exclusive role as a kind of implementation function of duties separation is very important in the RBAC model. In order to study the types of role conflicts,it studies the role mutual exclusion based on this situation,through the analysis of the nature of role list various types of role exclusion,and on this basis the role constraints table is designed,through the formalized method give the role constraints ta- ble form and role exclusive undo way. Finally design a role distribution controller with role conflict detection that perform role distribution according to role exclusion relationship well,is applied to a simple application system successfully.
出处
《计算机技术与发展》
2012年第12期21-24,28,共5页
Computer Technology and Development
基金
河海大学中央高校基本科研业务费项目(2009B21614)
河海大学自然科学基金(工科类)资助项目(2009421211)
