A Temporal Role-Based Administration of Authorization Model

As the role administration of authorization in large system is complex,a temporal role-based administration of authorization model is proposed in this paper.Consider that the user permission usually includes private permission,department permission and public permission,and the permission need update frequently,so the model expands the definition of permissions by adding a parameter of permission transmitting depth,i.e.the number that the permission can be inherited,which corresponds to the number of posts and the kind of permission in reality.And further,the model adds temporal constraint in permissions inheritance,i.e.only the permissions owned by the role that meets time requirement can be inherited.The model not only benefits from permissions update frequently,but also corresponding to the number of posts in reality,and it is easy to understand and operate.