A novel dual-key management protocol based on a hierarchical multicast infrastructure in mobile internet

Authors:
Jiannong Cao;Lin Liao;Guojun Wang;Hao Ma;Bin Xiao
Affiliations:
Department of Computing, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.;Department of Computer Science, City University of Hong Kong, Kowloon, Hong Kong.;School of Information Science and Engineering, Central South University, Changsha, Hunan Province, 410083, PR China.;Department of Computer Science and Engineering, The Chinese University of Hong Kong, New Territory, Hong Kong.;Department of Computing, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
Venue:
International Journal of Ad Hoc and Ubiquitous Computing
Year:
2009

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Abstract

This paper describes a secure multicast infrastructure for large-scale group communication in mobile Internet and proposes a key management protocol based on it. The hierarchical infrastructure logically divides the key management domain into several smaller administratively scoped areas with a key server associated with each area respectively. All the key servers located in every area participate in a Public Key Infrastructure (PKI) as trusted entities known by the subgroup members. Therefore, it is efficient to minimise the re-keying overhead implemented in the mobile host tier and simplify the re-keying relationships between the distributed key servers.