A spatial-context-related access control model based on role and time constraint

摘要

With popularization of wireless and mobile networks and network applications, access control supporting spatial context and time constraint has attracted increasing attention. In this paper, we propose a spatial-context-related access control model based on role and time constraint. Our model extends the existing RBAC model and introduces the concept of spatial context and time constraint, makes the authorization of access control associated with time and location, makes access control decisions dynamically on the basis of the context information, and improves consequently the security of access control to satisfy the demand for service-oriented dynamic access control system.