Role-based trust management system on TCP

When making authorization decision, previous trust management only considers the properties of entities while ignores the states of platforms on which entities are operating. An “irresponsible” platform may pose threat to the system security obviously. To address the problem, this paper presents a trust management framework based on the trusted computing platform. Both platform and entity need to be checked when service providers makes authorization decisions. This can improve the security property of the trust management system.