An Efficient Key Management Algorithm for Hierarchical Group Communication

Authors:
H. Ragab Hassan;A. Bouabdallah;H. Bettahar;Y. Challal
Affiliations:
Compiegne University of Technology, France;Compiegne University of Technology, France;Compiegne University of Technology, France;Compiegne University of Technology, France
Venue:
SECURECOMM '05 Proceedings of the First International Conference on Security and Privacy for Emerging Areas in Communications Networks
Year:
2005

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Abstract

Even though hierarchical group communication is a prominent communication model for a variety of applications, featured by hierarchical communication rules, it has not been sufficiently investigated in the security literature. In this paper, we introduce private hierarchical group communication and we determine its specific confidentiality requirements, and then we propose an efficient key management protocol satisfying those requirements. This work is done in the frame of a national french project whose consortium includes the international telecom company EADS, INRIA, CNRS and ENST-Paris. The project is called Safe- Cast and deals with group communication in PMR networks that are used mainly by security corps (police, fire fighters, soldiers, and so forth) in areas where it is difficult to have network infrastructures, such as war battles or following a natural disaster (earthquake, tsunami, tornado, or similar).