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arXiv · 2203.03320

Boosting Byzantine Protocols in Large Sparse Networks with High System Assumption Coverage

Shaolin Yu·Jihong Zhu·Jiali Yang·Yulong Zhan
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Abstract

To improve the overall efficiency and reliability of Byzantine protocols in large sparse networks, we propose a new system assumption for developing multi-scale fault-tolerant systems, with which several kinds of multi-scale Byzantine protocols are developed in large sparse networks with high system assumption coverage. By extending the traditional Byzantine adversary to the multi-scale adversaries, it is shown that efficient deterministic Byzantine broadcast and Byzantine agreement can be built in logarithmic-degree networks. Meanwhile, it is shown that the multi-scale adversary can make a finer trade-off between the system assumption coverage and the overall efficiency of the Byzantine protocols, especially when a small portion of the low-layer small-scale protocols are allowed to fail arbitrarily. With this, efficient Byzantine protocols can be built in large sparse networks with high system reliability.

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Shaolin Yu, Jihong Zhu, Jiali Yang, Yulong Zhan. 2022-03-07. Boosting Byzantine Protocols in Large Sparse Networks with High System Assumption Coverage. https://arxiv.org/abs/2203.03320

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