UTILIZING THE MESSAGING LAYER SECURITY PROTOCOL IN A LOSSY COMMUNICATIONS AERIAL SWARM
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Author
Dietz, Elyssa
Date
2022-03Advisor
Davis, Duane T.
Hale, Britta
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Recent advancements in unmanned aerial vehicle (UAV) capabilities have led to increasing research into swarming systems. Tactical employment of UAV swarms, however, will require secure communications. Unfortunately, efforts to date have not resulted in viable secure communications frameworks. Furthermore, the limited processing power and constrained networking environments that characterize these systems preclude the use of many existing secure group communications protocols. Recent research in secure group communications indicates that the Messaging Layer Security (MLS) protocol might provide an attractive option for these types of systems. This thesis documents the integration of MLS into the Advanced Robotic Systems Engineering Laboratory (ARSENL) UAV swarm system. The ARSENL implementation is intended as a proof-of-concept demonstration of the efficacy of MLS for secure swarm communications. Implementation test results are presented both for experiments conducted in a simulation environment and experiments with physical UAVs. These results indicate that MLS is suitable for a swarm, with the caveat that testing did not implement a delivery mechanism to ensure reliable packet delivery. For future work, mitigation of unreliable communications paths is required if a reliable MLS system is to be maintained.
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