Ordered Semiring-based Trust Establish Model with Risk Protecting

Trust management systems support the provision of the required levels of assurance in a flexible and scalable manner by locally discriminating between the entities with which a principal should interact. However, there is a tension between the preservation of privacy and the controlled release of information when an entity submits credentials for establishing and verifying trust. Furthermore, trust delegation will require some levels of risk to be tolerated. In this paper, we propose a privacy-protecting trust establishing model, which is based on an ordered semiring framework. In proposed semiring framework, the credential graph is flexible enough to express trust relationships which adapts to the trust and privacy risk aggregating and concentrating in decentralized network systems. We analyze a computing model to describe the trust opinion and privacy opinion, and also provide the minimized privacy disclosure credential search algorithm based on semiring model.