Improvement method of PBFT algorithm for Internet of Things

• Main Authors: XUE ZHEN, XUE QINGSHUI, ZHANG TIANHAO, HOU ZONGYANG, SUN YUE
• Format: Patent
• Language: Chinese; English
• Published: 06.05.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to an improved method of a PBFT algorithm oriented to the Internet of Things, nodes are ranked randomly according to the weight of integrals and selected layer by layer, and the integrals basically ensure that the nodes ranked in front are more reliable. In the consensus process, the consistency of messages received by the nodes is ensured, and the states of the nodes after trying to be replaced are synchronously handed over to the main node. And the behavior of the main node is supervised by the main node candidate node, so that dual guarantee is achieved, and the possibility that the main node disables is effectively reduced. And when a Byzantine error occurs, initiating challenges to three nodes after the main node and the candidate node in the integral sorting table, judging behaviors of the main node and the candidate node of the main node according to a challenge result, punishing the Byzantine node, and increasing the discovering cost of the node. And the communication complexity