云环境下RBAC模型的改进及应用

The improvements and applications based on the RBAC model in cloud platform

随着云计算平台在互联网的广泛应用,基于角色访问控制RBAC模型的问题也逐渐暴露出来.提出Cloud-RBAC模型,在传统RBAC模型中引入时间性约束参数,并增加了时效函数CloudDA、角色租赁函数CloudTA、权限租赁函数CloudTB,解决了RBAC模型中时效性问题和权限、角色转授问题.

With cloud computing widely used in the Internet,problems in role-based access control or RBAC model are gradually exposed.In this paper,Cloud-RBAC model not only adds in the traditional RBAC model temporal constraint parameter,but also adds time effect function CloudDA,role of leasing function CloudTA and permissions lease function CloudTB.It solves the problems about timeliness,permissions and the role delegated in the RBAC model.