Direction de recherche : Patrick BRÉZILLON

Towards a Conceptual and Software Framework for Integrating Context-Based Security in Pervasive Environments

For most people, the term "security" refers to cryptographic algorithms, biometric authentication techniques, passwords, etc. Beyond these intuitive notions, security is rather a very broad topic and may be viewed from a variety of other perspectives, including new access control models, software architectures for security systems, and security policies specifications. Pervasive environments are the prime field for applying security due to the high frequency of attacks and incompatibilities detected in these types of environments. This situation results from the distributed nature of pervasive environments, mobility of users and devices, services heterogeneity and the different capabilities of devices used to access the services. The main aim of this research is to point the research community to better consider context-based security as a new trend that may face future more subtle security attacks. We believe that the force of a good security system should not rely only on the force of security protocols but also on the way it copes with new and completely unpredictable situations or at least learn from new situations and updates its behavior accordingly. This goal can be reached by making future security solutions freely adaptive. The main contribution of this thesis is the design and implementation of a conceptual model and a software layer for integrating context-based security in pervasive environments. The thesis project relies on a multidisciplinary approach ; context-aware computing from which we bring the need for contextual information in order to provide adaptability and flexibility for security solutions ; software engineering from where we use the best design practices in order to provide an extensible software architecture for context-based security systems

Soutenance : 11/10/2004

Membres du jury :

Prof. Dr. Heinz Gröflin, University of Fribourg, Decision Support Systems Group, (Jury president)
Prof. Dr. Jacques Pasquier-Rocha, University of Fribourg, Software Engineering Group, (Ph.D. supervisor)
Dr Patrick Brézillon, Université Pierre et Marie Curie, LIP6, (Ph.D. supervisor)
Prof. Dr. Marino Widmer, University of Fribourg, Decision Support Systems Group (Expert)
Prof. Jean-Yves Jaffray, Université Pierre et Marie Curie, LIP6 (Expert)

Publications 2003-2005

• 2005
  • Gh. Kouadri Mostéfaoui, P. Brézillon : “IWSAC ’05 - International Workshop on Software Aspects of Context”, vol. 150, CEUR Workshop Proceedings, (CEUR-WS.org) (2005)
• 2004
  • Gh. Kouadri Mostefaoui : “Towards a Conceptual and Software Framework for Integrating Context-Based Security in Pervasive Environments”, soutenance de thèse, soutenance 11/10/2004, direction de recherche Brézillon, Patrick (2004)
  • Gh. Kouadri Mostéfaoui, P. Brézillon : “Modeling context-based security policies with contextual graphs.”, Workshop on Context Modeling and Reasoning at the 2^nd IEE International Conference on Pervasive Computing and Communication, Orlando, Florida, United States, pp. 28-32, (IEEE) (2004)
• 2003
  • Gh. Kouadri Mostéfaoui, P. Brézillon : “A Generic Framework for Context-Based Distributed Authorizations.”, Modeling and Using Context (CONTEXT-03), vol. 2680, Lecture Notes in Artificial Intelligence, Stanford, CA, United States, pp. 204-217, (Springer) (2003)