PBFT consensus system and method based on reputation value

Abstract

The invention discloses a PBFT consensus system and method based on a reputation value, and the system comprises: communities which are divided into different regions according to regions, wherein each community is provided with different IOT devices, and the IOT devices communicate with each other; slave chains which are used for all members in the community to directly perform data sharing operation; a main chain which is an alliance chain are linearly arranged according to a time sequence and is established an Ethereum or a super account book and is used for guaranteeing credible authentication of intelligent equipment, credible authentication of equipment cross-chains and cross-chain interaction; and slave chain nodes which are used for constructing communication between the slave chain blocks and the main chain, and are used as a communication, verification or candidate according to different reputation values. By implementing the invention, the execution efficiency of the systemis increased, and the effectiveness and quality of trusted services are ensured; the number of consensus nodes is reduced, consensus time is shortened, and a PBFT check point protocol is improved.

Description

technical field [0001] The invention belongs to the field of the Internet of Things, and relates to a reputation value-based PBFT consensus system and method. Background technique [0002] As the business of my country's Internet of Things industry becomes more and more complex, the business data generated is becoming more and more diverse and complex, and the demand for multi-service cross-domain services is also increasing. Faced with this situation, the alliance chain is used to form a master-slave area. The chain structure of the block chain can ensure the security and credibility of the data. Since the consensus mechanism will consume a lot of time, how to improve the efficiency of the block chain consensus has become an urgent problem to be solved. [0003] The traditional alliance chain algorithm is mainly the PBFT algorithm. PBFT is the abbreviation of Practical Byzantine Fault Tolerance, which means a practical Byzantine fault tolerance algorithm. However, this algor...

AI Technical Summary

Problems solved by technology

[0006] Technical solution 2: Patent No. CN109767199A "Reputation-Based PBFT Consensus System and Method, Blockchain Data Processing System" patent discloses a reputation-based PBFT consensus system and method, and blockchain data processing system; proposed Use the reputation value to select nodes, and use a strict selection mechanism to select consensus nodes, but PBFT is the most time-consuming, but it still uses the original three-stage consensus process of PBFT, which cannot efficiently improve consensus efficiency

[0007] Technical solution 3: Patent No. CN109688199A "A Multi-domain Hierarchical IoT Consortium Chain Platform and Its Fragmentation Method" patent, which proposes the use of fragmentation to simplify the integration, separate consensus from multiple domains, and finally unify Consensus, this can greatly reduce the burden on the network, but for a large-scale Internet of Things system, fragmentation is not a good solution, because different geographical locations may not be able to share a local area network, multiple times between different local area networks communication takes time

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