Access Control Mechanism Based on Trust Quantification

In an open distributed environment, protection of sensitive files and data becomes more difficult. Traditional access control mechanisms are not suitable for such dynamic environment. Trust can be an effective approach to solve the access control problem. In this paper, by considering fuzziness and uncertainty of trust, we propose a trust quantification algorithm based on grey fuzzy comprehensive evaluation method. Then we present an access control model based on trust quantification. Simulation results show that our mechanism is suitable for dynamic access control in distributed environment.