Traditional access control models are often found to be inadequate for digital libraries. This is because the user population for digital libraries is very dynamic and not complete...
We consider a set of views stating possibly conflicting facts. Negative facts in the views may come, e.g., from functional dependencies in the underlying database schema. We want ...
Despite the success of modern Web search engines, challenges remain when it comes to providing people with access to the right information at the right time. In this paper, we desc...
We have developed a mechanism which prevents abuse of trusted Java applets, such as digitally signed applets. A signed applet is usually permitted by a user to perform certain fun...
Abstract. Trust-management systems address the authorization problem in distributed systems. They offer several advantages over other approaches, such as support for delegation and...
Hao Wang, Somesh Jha, Thomas W. Reps, Stefan Schwo...