Abstract
Over the past few years, several efforts have been made to enable specification and enforcement of flexible and dynamic access control policies using traditional access control (such as role based access control (RBAC), etc.) and attribute based access control (ABAC). Recently, a unified framework, named MPBAC (meta-policy based access control), has been developed to enable specification and enforcement of heterogeneous access control policies such as ABAC, RBAC and a combination of policies (such as ABAC and RBAC). However, one significant limitation is that no complete administrative model has been developed for heterogeneous access control policies. In this article, we present a complete role-based administrative model (named as RAMHAC) for managing heterogeneous access control policies. We also introduce a novel methodology for analyzing heterogeneous access control policies in the presence of RAMHAC by modeling the policies through Datalog facts and using the μz tool. The administrative model includes a wide range of administrative relations, commands, pre-constraints and post-constraints. A comprehensive experimental evaluation demonstrates the scalability of the proposed approach.