Aiming at the problem of Byzantine fault tolerance (BFT) in the Raft algorithm, a Raft Byzantine fault tolerance (RBFT) algorithm combined with BLS signature is proposed. First, it uses BLS signatures to implement threshold signatures, converts the voting process into a threshold signature process, and combines this process with the Raft algorithm's AppendEntries message and RequestVote message to minimize the impact of the fault-tolerant process on consensus efficiency. Second, it introduces a safe status through the incremental Hash value to ensure the log's tamper-resistibility. Then it provides dynamical monitoring on the leader node so as to avoid the possible negative feedback of Byzantine leader and ensure the liveness of the algorithm. Finally, local multi-node simulation experiments show that the RBFT algorithm could improve the throughput and scalability, and reduce the latency of transactions effectively.
WANG Rihong, ZHANG Lifeng, ZHOU Hang, XU Quanqing
. A Byzantine Fault Tolerance Raft Algorithm Combines with BLS Signature[J]. Journal of Applied Sciences, 2020
, 38(1)
: 93
-104
.
DOI: 10.3969/j.issn.0255-8297.2020.01.007
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