Hybrid access control model in networked collaborative manufacturing environment

A hybrid access control model was presented for information resources security in the project-driven networked collaborative manufacturing environment. This model combined the task-based access control model with the role-based one, limited all operations to public resource in a concrete sub-project or a task so as to guarantee the confidentiality and integrity in the collaborative environment. An authorization evaluation algorithm was introduced for the private resource access of cross administration domains in collaborative environment. Confidence value of virtual roles was used to judge whether to give users dynamic permissions or not. Finally, the architecture was discussed and the simulation experiment of the algorithm was carried out. Simulation result satisfied the application requirements and the validity of the algorithm was proved.