The RBAC metaphor is powerful in its ability to express access control policy in terms of the way in which administrators view organizations. The functionality of simple Role Base...
Privacy issues have hindered centralised authentication approaches from being adopted by a wide range of users. This also applies to authorizations which suffer from privacy probl...
Nowadays, increasing needs for information sharing arise due to extensive collaborations among organizations. Organizations desire to provide data access to their collaborators whi...
Fengjun Li, Bo Luo, Peng Liu, Anna Cinzia Squiccia...
Role-based access control has been a focal area for many security researchers over the last decade. There have been a large number of models, and many rich specification language...
In this paper we analyze the requirements access control mechanisms must fulfill in the context of group communication and define a framework for supporting fine-grained access co...