[Resource Topic] 2023/1171: Arena: Multi-leader Synchronous Byzantine Fault Tolerance

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Arena: Multi-leader Synchronous Byzantine Fault Tolerance

Authors: Hao Lu, Jian Liu, Kui Ren


Byzantine fault-tolerant state machine replication (BFT-SMR) replicates a state machine across a set of replicas, and processes requests as a single machine even in the presence of Byzantine faults. Recently, synchronous BFT-SMRs have received tremendous attention due to their simple design and high fault-tolerance threshold.

In this paper, we propose Arena, the first multi-leader synchronous BFT-SMR. Thanks to the synchrony assumption, Arena gains the performance benefit from multi-leader with a much simpler design (compared to other partially synchronous multi-leader designs). Furthermore, it is more robust: ``no progress’’ of a leader will not trigger a view-change. Our experimental results show that Arena achieves a peak throughput of up to 7.7$\times$ higher than the state-of-the-art.

ePrint: https://eprint.iacr.org/2023/1171

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