NDLI: Context-Driven Adaptation of Trust Relationships in Pervasive Collaborative Environments

Content Provider	IEEE Xplore Digital Library
Author	Corradi, A. Montanari, R. Tibaldi, D.
Copyright Year	2004
Description	Author affiliation: Università di Bologna (Corradi, A.)
Abstract	The growing diffusion of portable devices with wireless connectivity and the integration of telecommunication systems and the Internet enable users to benefit from anytime and anywhere impromptu collaboration. Security is crucial to ensure secure sharing of information, but calls for novel solutions capable of establishing trust relationships on-the-fly among previously unknown entities. Traditional trust solutions seem to be inappropriate in dynamic mobile environments. They typically rely on centralised trust certification authorities and assign to entities levels of trust that depend on static entity attributes, such as entity identity or role. However, entity identities/roles are often either not sufficiently informative or too limited to take adequate collaborative decisions. This paper presents a novel trust model that rules the assignment of trust to entities based on various dynamic context information, e.g., user/device location, device properties, user needs, local operating conditions. As key features, this model allows to determine, to associate and to adapt entity levels of trust depending on the contexts where users operate and users acquire/lose a level of trust when entering/leaving a specific context. The proposed model facilitates the update of trust relationships as relevant changes in context information occur. The paper also shows the implementation of the proposed model in the COMITY framework that provides support facilities for defining and enforcing context-based trust policies.
Starting Page	178
Ending Page	181
File Size	116989
Page Count	4
File Format	PDF
ISBN	0769522637
DOI	10.1109/SAINTW.2005.1620006
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-01-31
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Collaboration Context modeling Environmental management Internet Collaborative work Pervasive computing Middleware Communication system security Information security Certification
Content Type	Text
Resource Type	Article

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