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Limiting Byzantine Influence in Multihop Asynchronous Networks

Abstract : We consider the problem of reliably broadcasting information in a multi hop asynchronous network that is subject to Byzantine failures. That is, some nodes of the network can exhibit arbitrary (and potentially malicious) behavior. Existing solutions provide deterministic guarantees for broadcasting between all correct nodes, but require that the communication network is highly-connected (typically, 2k+1 connectivity is required, where k is the total number of Byzantine nodes in the network). In this paper, we investigate the possibility of Byzantine tolerant reliable broadcast between most correct nodes in low-connectivity networks (typically, networks with constant connectivity). In more details, we propose a new broadcast protocol that is specifically designed for low-connectivity networks. We provide sufficient conditions for correct nodes using our protocol to reliably communicate despite Byzantine participants. We present experimental results that show that our approach is especially effective in low-connectivity networks when Byzantine nodes are randomly distributed.
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https://hal.sorbonne-universite.fr/hal-00934073
Contributor : Sébastien Tixeuil Connect in order to contact the contributor
Submitted on : Tuesday, January 21, 2014 - 3:18:13 PM
Last modification on : Friday, January 8, 2021 - 5:38:04 PM

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Alexandre Maurer, Sébastien Tixeuil. Limiting Byzantine Influence in Multihop Asynchronous Networks. International Conference on Distributed Computing Systems, Jun 2012, Macau, China. pp.183-192, ⟨10.1109/ICDCS.2012.15⟩. ⟨hal-00934073⟩

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