Managing Ad-Hoc Trust Relationships in Pervasive Computing Environments

Trust is considered as a fundamental aspect for inter-domain relationships in dynamic open environments. In this paper, we have reviewed existing trust models and their drawbacks when they are applied to pervasive computing. We present PTM, a new automatised decentralised trust management model for pervasive computing environments. PTM overcomes the challenges posed by dynamic open environments, making use of the autonomy and cooperable behaviour of the entities. Our model facilitates ad-hoc trust relationships, captures entities dynamic behaviour along time, and allows trust information exchange through a recommendation protocol. PTM has been validated according to the variable parameters.

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