Authorization infrastructures manage privileges and render access control decisions, allowing applications to adjust their behavior according to the privileges allocated to users....
David W. Chadwick, Gansen Zhao, Sassa Otenko, Roma...
—Access control models describe frameworks that dictate how subjects (e.g. users) access resources. In the Role-Based Access Control (RBAC) model access to resources is based on ...
Ana Ferreira, David W. Chadwick, Pedro Farinha, Ri...
Delegation of authority is an important process that needs to be captured by any access control model. In role-based access control models, delegation of authority involves delega...
We present an organisation infrastructure for open MultiAgent Systems built upon a role-based access control model (RBAC), which provides agents with means to enable and control a...
In emerging e-commerce applications, time constrained information sharing between different systems is becoming a common phenomenon. A flexible and efficient mechanism is needed t...