Access control for shared resources is a complex and challenging task, in particular if the access control policy should be able to cope with different kind of sharing and collabo...
There is a need for research on the scientific base and engineering requirements for building trustworthy systems in dynamic environments. To address this need, we study risk analy...
In this paper we propose a Dynamic Spectrum Access scheme which allows the users to opportunistically and efficiently access the channels available for communications. It addresses...
In this paper we are interested in argument based reasoning for access control, for example in the context of agents negotiating access to resources or web services in virtual orga...
Guido Boella, Joris Hulstijn, Leendert W. N. van d...
XACML has emerged as a popular access control language on the Web, but because of its rich expressiveness, it has proved difficult to analyze in an automated fashion. In this pape...