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Journal of Software
With the rapid development of network and the coming of information age, access control is particularly important, role-based access control (RBAC) is an access control which is popular. RBAC authorizes and controls the roles corresponding to the users to operate the object. It solves problems of least privilege, separation of duties and so on. However, limited permissions are required to be executed by a certain sequence, that is, the permission owned by a user is controlled by other users'.doi:10.4304/jsw.6.6.1096-1102 fatcat:2nku3qgpijcfzkb67jjvg47i4q