Abstract. Security policies, in particular access control, are fundamental elements of computer security. We address the problem of authoring and analyzing policies in a modular wa...
Business Processes for Web Services are the new paradigm for the lightweight integration of business from different enterprises. Whereas the security and access control policies ...
Abstract. Applications typically rely on the operating system to enforce access control policies such as MAC, DAC, or other policies. However, in the face of a compromised operatin...
Today sophisticated concepts, languages and frameworks exist, that allow implementing powerful fine grained access control systems for protecting Web Services and spatial data in ...
In this paper we present our authorization framework that supports the dynamic set-up of Web service federations for sharing data within virtual federations. Building on previous w...