Study On Access Control Method In Information Resource Integration

In the informationization process the enterprises establish a large number of information systems, due to historical and technical reasons, these information systems forms a lot of"information-island", the information resource integration is becoming particularly important, in which access control can not be ignored. This paper mainly includes three parts: in the first, centralized authorization of application systems using different access control models is studied, and its decision-making process is studied at the same time; because of the collaboration of inter-enterprise and enterprise application systems become more and more frequent, the security the problem has become particularly important, this paper analyses the security of interoperation of application systems which use RBAC as access control model, and then proposes a cross-domain decision-making algorithm; In the final, the theories of centralized authorization and role mapping of inter-domain are applied to the electric power information systems,so as to improve the security of integration of resources in the power systems.