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An Adaptive Security Model for Multi-agent Systems and Application to a Clinical Trials Environment

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9 Author(s)
Liang Xiao ; Univ. of Southampton, Southampton ; Peet, A. ; Lewis, P. ; Dashmapatra, S.
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We present in this paper an adaptive security model for Multi-agent systems. A security meta-model has been developed in which the traditional role concept has been extended. The new concept incorporates the need of both security management as used by role-based access control (RBAC) and agent functional behaviour in agent-oriented Software Engineering (AOSE). Our approach avoids weaknesses of traditional RBAC approaches and provides a practically usable security model for multi-agent systems (MAS). A unified role interaction model framework has been put forward that incorporates not only functional requirements but also security constraints in MAS. A security policy rule scheme has been used to express security requirements in relation to affective roles. The major contribution of the work is that little redevelopment effort will be required when security is to be engineered into the overall MAS architecture, hence minimising the impact of the security requirements changes to the MAS architecture. We illustrate the approach through its potential application in a clinical trial setting involving a prototype medical decision support system, HealthAgents.

Published in:

Computer Software and Applications Conference, 2007. COMPSAC 2007. 31st Annual International  (Volume:2 )

Date of Conference:

24-27 July 2007

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