Privacy-aware role-based access control

A privacy-aware role-based access control (P-RBAC) model that extends RBAC to express complex privacy-related policies, including such features as conditions and obligations is discussed. P-RBAC is easy to deploy in systems already adopting RBAC, thus allowing seamless integration of access control and privacy policies. Conditional P-RBAC introduces permission assignment sets and complex Boolean expressions. It can express more complex conditions than those supported by core P-RBAC's condition language. Hierarchical P-RBAC introduces the notions of role hierarchy, object hierarchy, and purpose hierarchy. P-RBAC can represent privacy law rules with obligations using a rule from COPPA. P-RBAC features method that deals with obligations with subject binding instead of action binding.