RHCA: Robust HCA via Consistent Revoting

Zijian Zhang, Kaiyu Feng, Xi Chen (), Xuyang Liu () and Haibo Sun
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Zijian Zhang: School of Cyberspace Science & Technology, Beijing Institute of Technology, Beijing 100081, China
Kaiyu Feng: School of Cyberspace Science & Technology, Beijing Institute of Technology, Beijing 100081, China
Xi Chen: School of Cyberspace Science & Technology, Beijing Institute of Technology, Beijing 100081, China
Xuyang Liu: School of Cyberspace Science & Technology, Beijing Institute of Technology, Beijing 100081, China
Haibo Sun: School of Cyberspace Science & Technology, Beijing Institute of Technology, Beijing 100081, China

Mathematics, 2024, vol. 12, issue 4, 1-15

Abstract: Since the emergence of blockchain, how to improve its transaction throughput and reduce transaction latency has always been an important issue. Hostuff has introduced a pipeline mechanism and combined it with a chain structure to improve the performance of blockchain networks. HCA has introduced a revoting mechanism on the basis of Hostuff, further reducing transaction latency, but it has also brought some problems. In HCA, if the leader is malicious, it would be possible to continuously call on the replica nodes to revote, which can lead to network congestion. This paper employs the global perfect coin technology to guarantee that every replica can obtain a globally consistent and the freshest candidate proposal during the Revote phase, thereby improving the robustness of the HCA protocol. The performance improvement of RHCA in attack scenarios has been verified through experiments.

Keywords: consensus; Byzantine fault tolerance; revoting; global perfect coin (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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