A model of resource access control is presented in which the access control to resources can employ user interaction to obtain the necessary permissions. This model is inspired by...
We present here the execution model of a policy-driven middleware for building secure distributed collaboration systems from their high level specifications. Our specification m...
Anand R. Tripathi, Tanvir Ahmed, Richa Kumar, Shre...
Real-time update of access control policies, that is, updating policies while they are in effect and enforcing the changes immediately, is necessary for many security-critical appl...
Usage control is a generalization of access control that also addresses how data is used after it is released. We present a formal model for different mechanisms that can enforce ...
Alexander Pretschner, Manuel Hilty, David A. Basin...
Network security is gravitating towards more centralized control. Strong centralization places a heavy burden on the administrator who has to manage complex security policies and ...