This paper elaborates on a solution to represent authorization and delegation in a graphical way, allowing users to better interpret delegation relationships. We make use of Weighted Trust Graph (WTG) as an instrument to represent delegation and authorization, extending it to cope with more complicated concepts, and providing a graphical representation of the level of confidence that exists bet...

The Bluetooth standard has a provision for mutual authentication of connecting devices but not their actual users and allows access control during connection setup only. We propose a user authorization and pairing (UAP) application, that has the ability to perform authentication and authorization of users using role based model. The pairing procedure, which exchanges link key between devices, i...

Authorization or access control limits the actions a user may perform on computer system, based predetermined policies, thus preventing by illegitimate actors. Access for Internet of Things (IoT) should be tailored to take inherent IoT network scale and device resource constraints into consideration. However, common authorization systems in employ conventional schemes, which suffer from overhea...

Trust plays a growing role in research on security in open computing systems, including Grid computing. We propose using trust for authorization in such systems. Traditionally, authentication and authorization in computer systems guard only user interfaces, thus providing only a perimeter defense against attacks. We search for an authentication and authorization approach that satisfies the requ...