Adding Risk Management in Trust Negotiation

Trust is a major aspect of decision making when two parties are involved, and the lack of face to face exchanges of the Internet deeply changes relations and behaviours regarding the available services. The already existing trust management systems over the Internet are one way only. Either they allow a provider to tell what it expects from a client (identification, qualifications), either it allows a user to specify constraints about a specific content (quality, suitability). We describe here the basis of what could be a decentralized, sharable, mutual trust management system.