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Group Key Agreement for Mission-Critical Wireless Mesh Networks

Establishing quick and secure communication between rescue team members in the disaster field is a significant task and wireless mesh network (WMN) is the best choice for disaster management and other emergency situations. This paper presents a BEhavior based Key Agreement (BEKA). First, BEKA presents an approach that not only takes the static nature of mesh routers and resource constraint of mesh clients into considerations, but also ensures that every active member contributes equally towards the group key. Second, BEKA adapts the stay duration behavior of mesh clients and proposes interval JoLe (Join/Leave) rekeying protocols to reduce the overhead of rekey operations upon highly frequent membership dynamics. Our analysis concludes that BEKA reduces the rekeying cost effectively and efficiently comparing with the tradition rekeying methods.