A Trust-Role Based Context Aware Access Control Model

Resource sharing is one of the main applications of network. How to establish a trust relationship between resources requestor and provider, and enforce authority is the key issue of efficient resource sharing. Existing models and methods are mostly focus on identity, recommendation and other information, but lack of the considering of resource requestor\´s conduct and environment of computing. And once authorized, it will not be able to track and control user behavior dynamically. It may cause more risks when sharing resources. Aiming to resolve the above problems, a trust-role based context aware access control model is proposed relying on the measurement and verification of the "trust credentials and evidences" which embody the context information of user behavior and platform environment to achieve the security, dependable and dynamic access control for resource sharing.