International Association of Engineering and Management Education (IAEME)
Cloud computing is one of the most emerging technique for fulfilling service demands in various forms. The key issue that is considered for its enhancement and optimization is the access control. In order to fulfill this requirement, here in this paper the author has proposed a robust system model called, Dynamic Expiration Enabled Role Based Access Control (DEERBAC) system that facilitates a widespread set of temporal constraints which further provides the fine grained policies for time-based access control scheme. This paper presents a study of the key issues of expressiveness and minimality in cloud environment.