In this paper, we introduce a framework for providing incentives for honest participation in global-scale distributed trust management infrastructures. Our approach is twofold: (1) we provide rewards for peers that advertise their experiences to others, and (2) impose the credible threat of halting the rewards, for a substantial amount of time, for participants who consistently provide suspicio...

This document specifies IPv4 compatibility mechanisms that can be implemented by IPv6 hosts and routers. These mechanisms include providing complete implementations of both versions of the Internet Protocol (IPv4 and IPv6), and tunneling IPv6 packets over IPv4 routing infrastructures. They are designed to allow IPv6 nodes to maintain complete compatibility with IPv4, which should greatly simpli...

Cloud computing technology is providing businesses, be it micro, small, medium, and large scale enterprises with the same level playing grounds. Small and Medium enterprises (SMEs) that have adopted the cloud are taking their businesses to greater heights with the competitive edge that cloud computing offers. The limitations faced by (SMEs) in procuring and maintaining IT infrastructures has be...

We present a framework for extending the functionality of LDAP servers from their typical use as a public directory in public key infrastructures. In this framework the LDAP servers are used for administrating infrastructure processes. One application of this framework is a method for providing proof-of-possession, especially in the case of encryption keys. Another one is the secure delivery of...

We consider the problem of huge data transfers and bandwidth sharing in the context of grid infrastructures where transfer delay bounds are required. This article investigates large flow interactions in a real very high-speed network and aim at contributing to high-speed TCP variants evaluation by providing precise measurements. It also gives an insight on the behaviour of protocols under diffe...

Besides the obvious importance of PIMs and PSMs in MDA, model transformations are undoubtedly the key technology in the realization of the MDA vision [1]. Among other usages, model transformations are the ones responsible for refining PIMs into PSMs (or abstracting away from PSMs to PIMs) and mapping PSMs to concrete middlewarebased implementations, providing thus an elegant approach to adapt P...

Hybrid Distributed Computing Infrastructures (DCIs) allow users to combine Grids, Desktop Grids, Clouds, etc. to obtain for their users even larger computing capabilities. In this paper, we present an experimental study of the SpeQuloS framework which aims at providing QoS to Desktop Grid by provisioning on-demand Cloud resources. We describe the experimental platform which relies on Grid5000 t...