Authors : Rony Hasinur Rahman and M. Lutfar Rahman
Abstract: Ad-hoc networks offer communication over a shared wireless channel without any pre-existing infrastructure. Forming security association among a group of nodes in ad-hoc networks is more challenging than in conventional networks due to the lack of central authority. With that view in mind, group key management plays an important building block of any secure group communication. The main contribution of this study, is a low complexity key agreement scheme that is suitable for fully self-organized ad-hoc networks. The proposed protocol is based on the multi-party version of the famous Diffie-Hellman key exchange protocol. The protocol is also password authenticated, making it resilient against active attacks. Unlike other existing key agreement protocols, ours make no assumption about the structure of the underlying wireless network, making it suitable for truly ad-hoc networks. Finally, we will also show that our protocol minimizes the computation and communication burden on individual computers (nodes) for key establishment by comparing its complexity with some popular and well-known key agreement protocols.
Rony Hasinur Rahman and M. Lutfar Rahman , 2007. A Password-Based Group Key Agreement Protocol for Wireless Ad-Hoc Networks . Asian Journal of Information Technology, 6: 1181-1186.