Peer-to-peer (P2P) computing promises to return the World Wide Web to an environment where the edge of the network is as important as the Web servers that have dominated its early years. This paper describes issues associated with P2P computing that must be solved before widespread deployment is possible. The paper presents a P2P solution where services and content are equally secured and can b...

This article presents a survey of authorization models and considers their 'fitness-for-purpose' in facilitating information sharing. Network-supported information sharing is an important technical capability that underpins collaboration in support of dynamic and unpredictable activities such as emergency response, national security, infrastructure protection, supply chain integration and emerg...