A number of key management challenges are encountered when operating tactical communication systems using a group-wide shared key. A large portion of such communications occurs over low bit-rate channels, and all communication channels must be available at any moment for mission action. Current over-the-air rekeying protocols consume too much channel bit-rate to be practical for large tactical radio networks.
Citation: Bajorski P, Kaminsky A, Kurdziel M, Lukowiak M, Radziszowski S, et al. (2014) Stochastic Analysis and Modeling of a Tree-Based Group Key Distribution Method in Tactical Wireless Networks. J Telecommun Syst Manage 3:115