Improved Access Control Strategy Based on RBAC Model and Its Application

System security is a significant factor which focuses on ensuring the reliability and security of system resource. In this paper, a MUG-RBAC (Multistage User Group RBAC) model is proposed based on improved role based access control strategy. The new model increased the entity of multistage user group in the RBAC and fine-grained allocation permissions. The validation of this model is realized in the application to the system security module. CROSSFilter is a part of the informatization platform of collaborative research and management which is developed by INEST CAS for constructing innovative and efficient research environment. By using this model, it shows that the usability of the security module CROSSFilter is enhanced compared with traditional Java security framework Spring Security to guarantee system stability, security and efficiency.