Access control model based on multi-role and task

A dynamic access control model (MD-TRBAC) is presented to solve the problem of the limitations in the applications of the access control model for workflow system based on multi-dimensional roles and tasks, and the model is described in the form of basic element which contains the system function and the set of the variable symbol. The model combines the advantages of TRBAC access control, and introduces the concept of action scope between the user and the role by removing the role of inheritance in the traditional model, and classifies the roles and tasks according to the actual needs, and ensures the system security, and reduces the complexity of the access policy. Through an example and introducing the technology of static page generation shows that the model in practical workflow system has a broad scope of application, better safety and efficacy.