Trust integration in collaborative access control model for Critical Infrastructures

Critical Infrastructures protection becomes increasingly important in recent decades. Particularly, those organizations should collaborate to share resources, services and exchange information and data, in order to ensure their continuity and success. By creating collaborative systems, we need to secure them against any malicious activities and destruction of their information systems. In this paper, we propose a new approach, named Trust-PolyOrBAC, for Trust Management in collaborative systems in critical infrastructures. Our approach integrates a trust concept in a PolyOrBAC access control model. Our aim is to establish trust between organizations during collaboration process, ensuring an access control to each resource and data. First, we present Trust- PolyOrBAC architecture. Then, we choose the Electrical Grid case study as a Critical Infrastructure in order to illustrate our approach and we present different parameters used to establish trust.