Improved PBFT algorithm based on QoS value in cloud manufacturing service scenario

被引：0
|
作者：
Xing W.U. [1 ,2 ]
Yushun F.A.N. [1 ,2 ]
Zhenfeng G.A.O. [3 ]
机构：
[1] Department of Automation, Tsinghua University, Beijing
[2] Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing
[3] Sangfor Technologies Inc., Shenzhen
来源：
Jisuanji Jicheng Zhizao Xitong/Computer Integrated Manufacturing Systems, CIMS | 2022年 / 28卷 / 06期
关键词：
blockchain; cloud manufacturing service; consensus algorithm; practical Byzantine fault tolerance algorithm; quality of service;
D O I：
10.13196/j.cims.2022.06.015
中图分类号：
学科分类号：
摘要：
In the cloud manufacturing service scenario, blockchain technology has received extensive attention and witnessed a large number of applications as an effective tool to build a bridge of trust between service providers and consumers. Consensus algorithm is the core technology of blockchain. However, existing consensus algorithms still bear the disadvantages such as high consumption and high latency. For this reason, an improved Practical Byzantine Fault Tolerance (PBFT) algorithm named Q-PBFT based on Quality of Service (QoS) value was proposed. Consensus nodes were selected according to QoS value, and then the three-phase protocol of PBFT algorithm was optimized into a two-phase protocol so as to improve communication effectiveness under the premise of satisfying security. A series of theoretical and experimental analyses had proved the effectiveness of the proposed algorithm. © 2022 CIMS. All rights reserved.
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页码：1767 / 1776
页数：9
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