An Introspective Study on Dynamic Role-Centric RBAC Models

With the advent of internet and its related technologies, the organizations are more concerned in providing security to their resources. Access control models helps in providing the access limits to the users when the resources are being accessed by them and Role based access control (RBAC) model is one such access control mechanism in which the users access the resources based on the roles they acquire in the system. In the dynamic environment, the roles that an user acquires in the system is completely depending on the context in which the user sends an access request. This paper explores the concepts of RBAC models and their extensions. The main objective of this paper is to analyse the access control models by identifying their applications and limitations in the real world applications.