Logistics System Model Based On Blockchain Technology

With the rise of China's overall economic environment,the rapid progress of science and technology,and the popularization and application of the Internet,the logistics industry has ushered in a blowout growth in just a few years.At the same time,the problems of traditional logistics system are exposed:the process of logistics transmission is opaque,the security of information and data in the transmission process is low,and user information is easy to leak;it is difficult to trace the source,and it is difficult to investigate the relevant responsibility after the problems occur;the degree of logistics system centralization is too high,the efficiency of information interaction between enterprises is low,the cost is high,the logistics information barriers are increasing,and the logistics information is over centralized the security,scalability and information capacity of the enterprise database are facing great challenges.When an enterprise database is attacked by a single point of attack,large-scale centralized data may be stolen and abused,resulting in huge losses for users.All these problems imply that the current logistics system is more and more difficult to match the growth demand of the industry.Blockchain is a kind of technology similar to distributed ledger.It has the characteristics of multi node distributed networking,synchronous update of node information,encryption of password technology,non tampering of block storage content and easy traceability of information,which is very suitable for logistics scenarios.Based on the difficulties of information and data sharing,lack of data security and difficult traceability in traditional logistics system,this thesis studies how to build a safe and efficient logistics system using blockchain technology.The main work of this thesis is as follows:(1).In order to solve the problem of information and data security encryption in logistics system,a provably secure and efficient certificateless signature scheme based on certificateless public key cryptosystem is proposed.Compared with other certificateless signature schemes,this scheme has lower number of operations and higher efficiency in the signature phase and verification phase.In the case of discrete logarithm difficulty,it is proved that the scheme is unforgeable for both adversaries A₍₄₀₎and A₍₄₇₎.To sum up,the signature scheme can be used to sign and verify the data information of the relevant links in the logistics system,so as to provide the identity authentication and non repudiation of the sender,the scheme has great potential in the application scenario of logistics system.(2).According to a series of problems in the current logistics system,a new logistics system scheme is put forward.In this scheme,blockchain technology and architecture are applied to the design of logistics system.According to each important module in the logistics link,the model is created.From architecture design to function and process,combined with the distributed storage characteristics of blockchain technology,the distributed storage system of logistics system information data is designed to improve the over centralization of traditional logistics system information storage.The proposed certificateless signature scheme is applied to the signature and signature verification of encrypted information to ensure the integrity of data and provide identity authentication and non repudiation.Then,according to the principle of blockchain traceability,the traceability system of logistics information is specified to solve the problem of difficult traceability of traditional logistics system.Finally,intelligent contracts are set in the key nodes of logistics system to simplify the transaction process and improve efficiency.Theoretical analysis shows that the scheme is practical and effective.