There any many different access-control systems, yet a commonality is that they provide
flexible mechanisms to enforce different access levels. Their importance in organisations to …

Access control mechanisms define the level of access to the resources among specified
users. It distinguishes the users as authorized or unauthorized based on appropriate …

Extensions of Role-Based Access Control (RBAC) policies taking into account contextual
information (such as time and space) are increasingly being adopted in real-world …

In the present‐day computing environment, where access control decisions are often
dependent on contextual information like the location of the requesting user and the time of …

The existing modeling and verification methods for embedded software are insufficient
towards the increasingly prominent security requirements. In this paper, aiming at high …

In this paper we present Vac, an automatic tool for verifying security properties of
administrative Role-based Access Control (RBAC). RBAC has become an increasingly …

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 …

Access control deals with the roles and privileges to which a user is authorized, and is an
important aspect of the security of a system. As enterprise access control systems need to …

Attribute-based Access Control (ABAC) has been emerging as a suitable choice for large
and federated enterprises due to its flexibility in expressing various types of security policies …

Providing restrictive and secure access to resources is a challenging and socially important
problem. Among the many formal security models, Role Based Access Control (RBAC) has …