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Paper ID: 2515

Trust Realisation in Collaborative Clinical Trials Systems
Ajayi,O.

Appeared in: HealthCare Conference HC2007, Harrogate, England, March 2007
Page Numbers:
Publisher: N/A
Year: 2007
ISBN/ISSN:
Contributing Organisation(s):
Field of Science: e-Science

URL: http://www.nesc.ac.uk/papers/staff/ajayi-hc2007-18.pdf

Abstract: Due to the sensitivity of data and risk of potential unauthorised information disclosure that exists in large distributed systems, there is the potential for sensitive clinical information to be compromised in terms of integrity, privacy and confidentiality. The dynamic nature and autonomy of large distributed health systems makes it difficult to define a centralised access control framework for secure interactions across organisational boundaries. Thus there is the need for a decentralised access control framework that will integrate credentials and access policies between organisations without compromising organisational autonomy. In this paper a framework is presented through which trust is discovered and realised based on an approach we call dynamic trust negotiation (DTN). In this approach, trust is realised by multiple negotiation and delegation hops of security credentials through mediated trust pathways. This approach solves cross boundary authorisation issues and provides an alternative to global (centralised) security models based on shared security ontologies.

Keywords: Trust Negotiations, Security, Clinical Trials


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