Diffie-Hellman key distribution extended to group communication
CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
Mobile ad hoc networking and the IETF
ACM SIGMOBILE Mobile Computing and Communications Review
ICNP '02 Proceedings of the 10th IEEE International Conference on Network Protocols
CLIQUES: A New Approach to Group Key Agreement
ICDCS '98 Proceedings of the The 18th International Conference on Distributed Computing Systems
Secure Group Communication Using Robust Contributory Key Agreement
IEEE Transactions on Parallel and Distributed Systems
Key management approaches to offer data confidentiality for secure multicast
IEEE Network: The Magazine of Global Internetworking
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A mobile ad hoc network (MANET) is a kind of wireless communication infrastructure that does not have base stations or routers. Each node acts as a router and is responsible for dynamically discovering other nodes it can directly communicate with. However, when a message without encryption is sent out through a general tunnel, it may be maliciously attacked. In this paper, we propose a hierarchical key management scheme (HKMS) for secure group communications in MANETs. For the sake of security, we encrypt a packet twice. Due to the frequent changes of the topology of a MANET, we also discuss group maintenance in this paper. Finally, we conducted the security and performance analysis to compare the proposed scheme with Tseng's [13] and Steiner's [12] schemes.