Research On Key Technologies Of Logistics Information Sharing Platform Based On Blockchain

With the disappearance of the initial demographic dividend,the pace of development of the domestic logistics industry slowed down,and companies began to explore ways to reduce logistics costs and improve the operational efficiency of the industry to increase profits through communication and cooperation.Today’s existing logistics enterprises are basically centralized structures,and are concerned about the security issues brought about by information sharing.In this paper,an information sharing platform for the logistics industry is designed based on blockchain technology to solve the security problem of data sharing by relying on the native features of blockchain such as decentralization,traceability,and non-tampering.At the same time,the platform has the function of supporting big data sharing and transactions,which simplifies the process of establishing logistics alliances and is easy to realize industry regulation.The main research contents of this article lie in:Based on the Hyperledger Fabric,a blockchain-based logistics information sharing platform is designed,and blockchain business processes and functional modules for various logistics services are designed according to the specific needs of logistics.Enterprises and government regulators form a logistics alliance by joining the channel,which isolates data between channels for privacy protection and realizes reliable data sharing based on blockchain’s easy traceability,decentralization and other characteristics,while strengthening the management of logistics enterprises by government regulators.Improved storage scheme for logistics big data.To address the problems of data loss and privacy information leakage in storing large files to a third-party centralized server,this paper improves the storage model for logistics big data based on Inter Planetary File System(IPFS)and attribute-based encryption algorithm(CP-ABE).The logistics data is divided into basic data and private data through the chain code,and large files such as images in the logistics process are uploaded to the IPFS system,using the storage characteristics of IPFS of three copies and block distribution to ensure the security of off-chain storage of images and other data.At the same time,the access path of images based on content addressing is kept in the block,and the CP-ABE algorithm is adopted for private data,which can complete data multi-node access control with one encryption.Finally,an experimental simulation of the above-mentioned storage expansion scheme is carried out,and the results show that the scheme can meet the high throughput requirements of the logistics industry in terms of delay and computing performance.This paper designs a blockchain consensus mechanism,IT-PBFT,based on the T-PBFT algorithm,for the problem that the existing PBFT consensus cannot achieve high throughput while the nodes are large.The system’s scalability and consensus efficiency are effectively improved by the possibility of changes to the proposed algorithm.The simulation experiments show that the proposed consensus algorithm can contain hundreds of nodes,the throughput is maintained at about 700 nodes per second and the system can tolerate at least 33% of Byzantine errors.Finally,the whole system is simulated and the data show that the hardware overhead of the system nodes is low and the overall throughput can meet the requirements of the logistics system to a certain extent.The next steps will focus on refining big data sharing and transaction processes and improving the system’s ability to query relationships.