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dc.contributor.authorAjayi, Oluwafemien_US
dc.contributor.authorSINNOTT, RICHARDen_US
dc.contributor.authorSTELL, ANTHONYen_US
dc.date.accessioned2014-05-21T22:07:51Z
dc.date.available2014-05-21T22:07:51Z
dc.date.issued2007en_US
dc.identifier.citationAjayi, O., Sinnott, R., & Stell, A. (2007). Formalising dynamic trust negotiations in decentralised collaborative e-health systems. In The Second International Conference on Availability, Reliability and Security (ARES'07), Vienna, Austria.en_US
dc.identifier.urihttp://hdl.handle.net/11343/28835
dc.description© 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_US
dc.description.abstractAccess control in decentralised collaborative systems present huge challenges especially where many autonomous entities including organizations, humans, software agents from different security domains seek to access and share resources in a secure and controlled way. Automated trust negotiation (ATN) is one approach that has been proposed for trust discovery and realisation, which enables entities viz. Strangers to access resources across autonomous boundaries through iterative exchange of credentials. Various negotiation strategies have been proposed to protect credential disclosure during trust negotiations. However in some domains such as e-health, not all entities are willing to negotiate credentials or disclose access policies directly to strangers regardless of negotiation strategies and instead prefer to negotiate and disclose sensitive information only to strangers within what we refer to as a circle of trust. In this paper, we introduce a formal model to describe how locally trusted intermediary parties can provide multiple negotiation and delegations hops to protect credentials and access policies. We propose a dynamic trust negotiations (DTN) model that not only protects sensitive information from disclosure but also reduces semantic issues that exist with credentials in decentralized systems. This work is currently being explored and implemented within the e-health domain: specifically in the MRC-funded Virtual Organisation for Trials of Epidemiological Studies (VOTES) project.en_US
dc.languageengen_US
dc.publisherIEEE Computer Societyen_US
dc.subjecttrust negotiationsen_US
dc.subjectsecurityen_US
dc.subjectP2Pen_US
dc.subjectaccess controlen_US
dc.titleFormalising dynamic trust negotiations in decentralised collaborative e-health systemsen_US
dc.typeConference Paperen_US
melbourne.peerreviewPeer Revieweden_US
melbourne.affiliationThe University of Melbourneen_US
melbourne.publication.statusPublisheden_US
melbourne.source.titleThe Second International Conference on Availability, Reliability and Security (ARES'07)en_US
melbourne.source.monthAprilen_US
melbourne.source.locationconferenceVienna, Austriaen_US
dc.description.sourcedateconferenceApril 10th-13then_US
melbourne.elementsidNA
melbourne.contributor.authorSinnott, Richard
melbourne.contributor.authorStell, Anthony
melbourne.accessrightsOpen Access


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