Right leakage problem and its analysis method in role-based access control system

It was critical problem to evaluate safety of access control system whether there was any right leakage or not. To deal with this problem,the trust relationships among security administrators in Role-Based Access Control (RBAC) system were firstly discussed. The definitions of right leakage and the content of safety analysis in RBAC system were clarified. And then,two safety analysis instances were formally described. The intelligent planning technology was employed to conduct safety analysis of RBAC system. Domain planning model of safety analysis instance,construction process and rules for series planning problems were described. And the corresponding safety analysis algorithm was also designed. Finally,the safety analysis process was demonstrated by a case in the engineering field.