In this paper we describe how we have added support for dynamic delegation of authority that is enacted via the issuing of credentials from one user to another, to the XACML model ...
– Ad hoc m-commerce is an emerging way of conducting online trading wirelessly within dynamic network communities. However, participants in such systems are vulnerable to attacks...
Abstract. The security requirements of complex multi-tier web applications have shifted from simple localized needs, such as authentication or authorization, to physically distribu...
The Central Authentication Service (CAS) is a middleware for constructing a Single Sign On infrastructure for Web applications and has been developed by JA-SIG. In this paper, we ...
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...