Design and Application of Privileged User Management Based on SELinux

This paper analyzes the application of SELinux on the current Linux type operating systems,introduces the definition of new identifier for the privileged user based on Role Based Access Control(RBAC) module and trusted computing,and propose a new privileged user management based on this definition for the secure Linux operating system.To solve the problem of distinguishing privileged users through UID with the role,it enhances the security of authentication strength by trusted computing's password service,solves the problem of security mode switching by kernel enhancement,and effectively improves the secure application of SELinux in Linux system.