Abstract Role-Based Encryption (RBE) realizes access control mechanisms over encrypted
data according to the widely adopted hierarchical RBAC model. In this paper, we present a …

This paper proposes a logic based framework that extends role based access control
systems with dynamic delegation in a decentralised environment. It allows delegation of …

Multi-tenancy, elasticity and dynamicity pose several novel challenges for access control in
mobile smartphone clouds such as the Android \textsuperscript\texttrademark cloud …

In this paper we propose a trust-aware enhancement of RBAC (TA-RBAC) that takes
trustworthiness of users into consideration explicitly before granting access. We assume that …

Enforcing dynamic access control constraints in workflow management systems (WFMS) is a
very important requirement with regard to security issues. However, respecting those …

Access control is a means by which the ability to access the system is explicitly enabled or
restricted in some way. Access control system enables an authority to control access to …

User delegation is a type of access control mechanisms that allow a person to delegate all
or part of his her authorities to others. It is an important access control policy that can …

With the growing advancement of pervasive computing technologies, we are moving
towards an era where context information will be necessary for access control. Traditional …

Access control policies models provide effective approach to control users actives to allow or
deny action to user or group within the resources. This mechanism allowed us to verify the …

Trust has become essential in computer science as a way of assisting the process of
decision-making, such as access control. In any system, several tasks may be performed …