Optimization of PBFT Consensus Algorithm in Piecewise Blockchain
Guannan Sun, Kaiqi Xu, Jiayi Wu, Xinjie Wang, Zuxin Liu · 2022
The consensus mechanism, as the foundation and core of blockchain technology, fundamentally determines the security, availability, etc. of the whole blockchain system. In this paper, an improved algorithm of PBFT based on network partitioning is proposed. Firstly, the nodes are divided into network slices, and the Raft mechanism is used for consensus within each slice, while each slice elects leaders to form a committee, and the PBFT mechanism is used for consensus within the committee. Supervisory nodes and sorting nodes are also introduced to improve the security of the algorithm.