Traditionally, creation and revocation of certificates are governed by policies that are carried manually, off-line, by trusted agents. This approach to certificate management is ...
Policy Based Management (PBM) is a research topic that has been driven by the tremendous complexity inherent in the administration and management of present-day networking and tel...
A policy describes the conditions under which an action is permitted or forbidden. We show that a fragment of (multi-sorted) first-order logic can be used to represent and reason...
A virtual organization (VO) is a dynamic collection of entities (individuals, enterprises, and information resources) collaborating on some computational activity. VOs are an emer...
Gaining access to sensitive resources on the Web usually involves an explicit registration step, where the client has to provide a predetermined set of information to the server. T...
Rita Gavriloaie, Wolfgang Nejdl, Daniel Olmedilla,...