Access control model based on RBAC in cloud computing

Because of the virtualization and elastic properties of cloud computing,the access control of cloud environment is different from the traditional access control under limiting conditions,thus the properties of the host and the guest and the role of the host are in the dynamic changes.In consideration of these characteristics of cloud computing access control,a cloud computing access control model based on the Role-Based Access Control(RBAC) model is proposed.This model can not only ensure the security and reliability of the data stored in the cloud,but also guarantee a certain of elasticity and flexibility.Finally,the model's realization process was given,and was achieved in the health care system based on cloud computing environment.