带时间特性和空间特性的角色授权管理模型是在现有的RBAc研究,4J的基础上,对角色加入时间约束和空闻约束,引入角色级别和用户级别的概念,提高系统的安全性和灵活性,降低授权管理的复杂性,并解决了相互冲突的角色的授权问题。-Time characteristics and spatial characteristics with the role of authorization management model is the existing RBAc research, 4J, based on adding time constraints on the role of constraints and space news, into the role of the concept level and user level, improve system security and flexibility , reduces the complexity of authorization management, and resolve the conflicting role of the licensing issue.