Authentification par la méfiance dans les systèmes pervasifs
UbiMob '05 Proceedings of the 2nd French-speaking conference on Mobility and ubiquity computing
Service sharing with trust in pervasive environment: now it's time to break the jinx
Proceedings of the 2008 ACM symposium on Applied computing
A trust-based secure service discovery (TSSD) model for pervasive computing
Computer Communications
Journal of Systems and Software
Maintaining trustworthiness of service compositions
Proceedings of the 8th International Conference on Frontiers of Information Technology
Architecture and implementation of a trust model for pervasive applications
Journal of Mobile Multimedia
A dynamic trust model based on naive bayes classifier for ubiquitous environments
HPCC'06 Proceedings of the Second international conference on High Performance Computing and Communications
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It is well known that trust relationships between entities are uncertain in pervasive computing. However, previous researchers did not attach enough importance to uncertainty in their trust models. Therefore, their models always seem arbitrary when they set some specific values to various trust levels. To remedy this problem, we declare that uncertainty should be taken into account while modeling trust. This paper presents such an approach, in which we model trust based on cloud theory, which is a promising theory to describe uncertain concepts. In other words, we regard trust between entities as a cloud, say trust cloud. Based on such a definition of trust, we further propose algorithms to compute propogated trust clouds and aggregated trust clouds, which are needed in case of trust reasoning for entities in pervasive computing environments. Besides, we also propose an approach to use our cloud-based trust modelin pervasive applications, which is helpful to put our model into practice in trust-based security mechanisms.