RBAC访问控制模型中私有权限问题的研究  

Research on Private Privilege in RBAC

作　　者：赖俊[1] 王命延[1] 

机构地区：[1]南昌大学计算中心,南昌330031

出　　处：《科技广场》2007年第3期40-42,共3页Science Mosaic

摘　　要：角色的私有权问题一直是RBAC中没有解决的问题。在分析现有的私有权解决方案的基础上,针对当前提出的几种解决方法的不足,提出了一种较好的改进方法解决该问题。在角色继承中引入传播深度的基础上提出设置虚节点的方法增加了其灵活性。为了能够适应于在复杂的角色层次关系,提出了将角色层次关系图转换成树的方法,解决了其不能在图中应用的局限。In present the research on private privileges in Hierarchical RBAC remains a fertile area. This paper analyses several current solutions and points out their shortcomings for this problem, and presents a revised solution that sets virtual code on the basis of setting limited scope of inheritance in role hierarchies to be more flexible. Towards large-scale role hierarchies, this paper simultaneously presents a new solution that transfers graph to tree of role hierarchies and it breaks the limit of the solution of setting limited scope of inheritance while the role hierarchies graph is not tree.

关 键 词：RBAC 角色 角色层次 私有权限 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]