基于在线学习系统的扩展RBAC模型研究

Research on Extended RBAC Model Based on Online Learning System

在线学习是一种新型的学习模式,被广泛应用培训、教学中。访问控制技术能够有效保障在线学习系统中共享资源的安全性。基于角色的访问控制技术RBAC(Role-Based Access Control)是目前使用最广泛的访问控制技术之一,且RBAC模型还具备良好的扩展性。文章针对在线学习系统的访问控制需求,提出了扩展的RBAC模型,并给出其详细定义和说明。扩展RBAC模型中,引入了层级用户组策略、三级权限及权限屏蔽概念。扩展RBAC模型最后被应用于在线学习系统中设计实现,结果表明该扩展RBAC模型能够满足在线学习系统的访问控制需求。

Online learning is a new learning model,widely used in training and teaching.Access control technology can effectively guarantee the security of shared resources in online learning system.Role-based access control(RBAC)is one of the most widely used access control technologies,and the RBAC model has good scalability.Aiming at the access control demand of online learning system,this paper puts forward the extended RBAC model,and gives its detailed definition and description.In the extended RBAC model,the hierarchical user group policy,three level permissions and the concept of privilege blocking are introduced.The extended RBAC model is applied to the online learning system,and the results show that the extended RBAC model can meet the access control requirements of online learning system.