An united Cross-Domains access control model

The access control mechanism is a basic security mechanism of information system, which determines if a subject can access an object. The BLP, RBAC are the representative access control model, but they are usually used in single-domain system, not suit for Cross-Domains system. Because they can not do unit access control between two systems, which will lead out of control of the privilege and coinciding of security policies. This article proposes an united Cross-Domains access control model, which can be used to analyze information flow between two systems, and finally resolve the above problem of security risk effectively.