| Today’s economy is becoming more globalized and emerging technologies are maturing.The market environment is becoming more and more uncertain,the system is complex and the information blur trend is getting more obvious.This has led to difficulty in market demand,and a product life cycle is getting shorter,which makes it more difficult to meet the challenges of supply chain information sharing,especially the problems of information asymmetry and high trust cost.The emergence of blockchain technology can help solve the current difficulties in supply chain information sharing.Every enterprise and customer involved in the supply chain has become a node in the blockchain,which no longer needs a centralized organization to ensure trust,and avoids relying on core enterprises for unified planning and coordination.However,the trust based consensus algorithm in blockchain still has many defects and cannot be directly applied to the scene of supply chain information sharing.Therefore,this paper improves the PBFT consensus in the blockchain technology so that it can be applied to the supply chain information sharing under the blockchain.Based on the existing consensus method,this paper optimizes and improves the consensus applicable to the supply chain information sharing system under the blockchain,improves the reliability and business efficiency of the information in the supply chain,and compares the effect of the algorithm with the existing consensus through simulation experiments.The improved PBFT consensus is applied to supply chain information sharing,the key analysis will describe the actual sharing application flow for information flow,logistics,and capital flow,and finally apply for application advice based on the challenges faced by the current supply chain information sharing and blockchain.The main research contents are as follows:(1)By analyzing the existing problems in traditional supply chain information sharing,this paper summarizes the advantages and technical framework of supply chain information sharing based on blockchain.By analyzing the characteristics of supply chain,PBFT is selected as the basis for improvement to meet the needs of supply chain information sharing and better integrate with blockchain.(2)Through the analysis of PBFT consensus the current problems,a consensus improvement scheme for supply chain information sharing is proposed,and a PBFT consensus based on credit score and weighted willingness ranking score method is designed.The supervision node is selected through credit score,and then the main node is selected through weighted willingness ranking score method to ensure the credibility and security of the main node.Changing the static request response mode,so that the entry and exit of nodes will not restart the whole system,and directly join or exit the supply chain through the verification of the main node and the supervision node.Changing the traditional C/S network response mode of PBFT to P2 P network mode,optimize the consensus process of PBFT,and remove the final reply stage.The consensus stage consists of four parts.The algorithm can improve the security and resource utilization ability of supply chain information under the blockchain,and help the blockchain adapt to the complex and changeable environment in the supply chain.The improved consensus algorithm is analyzed from the reliability,dynamics,communication times of the algorithm and security.It is found that the improved consensus algorithm meets the needs of supply chain information sharing better than the previous consensus algorithm.(3)Simulation experiments are carried out by using the multithreading mechanism of GO language.Compared with the throughput,time delay and credibility before and after the improvement,it is found that the improved PBFT is more in line with the needs of supply chain information sharing.The improved PBFT consensus is applied to supply chain information sharing,the key analysis will describe the actual sharing application flow for information flow,logistics,and capital flow,and finally apply for application advice based on the challenges faced by the current supply chain information sharing and blockchain.Based on the current status of the current main research content for the current supply chain information sharing,the key technical consensus mechanism to improve blockchain technology is improved to more meet the needs of supply chain information sharing.The improved PBFT consensus mechanism meets some requirements of credibility,dynamics and low communication times in supply chain information sharing,and provides a more feasible consensus for supply chain information sharing and blockchain integration. |
