摘要
针对RBAC模型的不足,在研究了传统RBAC模型的基础上,对RBAC模型进行了扩展,引入特征类别、特征实例等相关概念,给出了模型的形式化描述,并对模型进行了分析。扩展后的RBAC模型可以有效的减少角色、权限的数量,降低授权管理的复杂度,减轻访问控制的管理工作量。然后给出了扩展后的RBAC模型在电子政务中的应用实例。最后对模型的优缺点进行了进一步讨论。
For the shortcomings of traditional RBAC,an improved model based on the research of the traditional RBAC model is es-tablished.Some new concepts such as property class are presented in the improved model.The improved model is analyzed and the for-malized description of the model is represented.The improved RBAC model makes the amount of permission and role reduced,and meanwhile,the complexity for the authorization management decreased and then the workload of access control alleviated.Finally,merits and drawbacks of the model are discussed.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第24期5236-5239,共4页
Computer Engineering and Design
基金
国家科技支撑计划基金项目(2006BAJ9B0301)
