Common Contracts
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Byzantine Agreement Service for Cooperative Wireless Embedded SystemsByzantine Agreement • May 8th, 2017
This paper presents a framework for Byzantine fault tolerant agreement for small-sized groups of autonomous, wirelessly con- nected systems. It focuses, besides providing support for general purpose value agreement, on the agreement of distributed sensor readings. The latter enables to establish a joint view on context conditions, thereby building the basis for joint coordinated actions. As classical Byzantine fault tolerant agreement protocols require 3t + 1 participants to tolerate t faulty nodes, we also consider a hybrid fault model by utilizing a trusted subsystem, which can only be subject to crashes. The latter reduces the required group size for agreement to 2t + 1 nodes and reduces the message complexity of the protocol, which is essential for the targeted scenarios. The experiment results show that the trusted subsystem can effectively increase the efficiency. 1
