Title: 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

Addresses: 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

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.

Keywords: key management; multicast communication; re-keying; dual-key; mobile internet; group communication; mobile communications; public key infrastructure; PKI.

DOI: 10.1504/IJAHUC.2009.024521

International Journal of Ad Hoc and Ubiquitous Computing, 2009 Vol.4 No.3/4, pp.183 - 190

Published online: 08 Apr 2009 *

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