Research on an UCON model supporting distributed management

Usage control model is presented recently and has been considered as the next generation control model which is used to access digital objects. To be directed against in management function and distributed, multi-domain dynamic environment, this paper puts forward a specific application UCON model -RBUCON which is based on the core model of UCON. With the way of role, domain, protective domain, the RBUCON model adds the function of managing UCON organization and enhances the ability of model security applications. This model retains the advantages of RBAC model, changes the form of Role definition, improves the way of Role management, increases protective mechanisms based on objects. The formalized description and definition of the RBUCON model are also given.