26. The system of claim 25 wherein the values for the TC-related attributes include values for subject, object and user:profile:role:type:system.
25. The system of claim 24 further comprising hook functions configured for utilizing the TC services to obtain values for the TC-related attributes upon receiving a request from a subject for access to an object, and the decision module is further configured for making access control decisions by denying or allowing access based on the obtained values for the TC-related attributes.