Research On Key Technologies Of Logistics User Information Security Based On Blockchain

For the past few years,the mode of E-commerce online sales has gained the popularity of the general public.Due to the large increase in the E-commerce online sales,the logistics industry has also grown rapidly,and problems in traditional logistics industry are gradually emerging.Traditional logistics industry has many obvious problems,such as inadequate protection mechanism for user's personal information,asymmetric information between the two parties,anti-counterfeit traceability is difficult to achieve,lack of effective supervision mechanism.With decentralization,traceability and immutability of blockchain technology,it is expected to solve the existent problems of traditional industry.Therefore,this thesis combined blockchain technology and ciphertext-policy attribute-based encryption algorithms to design a logistics privacy data protection method,and then completes the logistics traceability method through the design of relevant smart contract,followed by the verification and analysis of the results.The main research work can be summarized as follows:1.Aiming at the problem that inadequate protection mechanism for user's complete privacy data,an improved logistics data access control algorithm based on ciphertextpolicy attribute based hierarchical encryption is designed,which ensures the security of user's private key with the membership in Hyperledger instead of traditional key distribution center.Moreover,use ciphertext-policy attribute-based encryption to design hierarchical access control strategy,specific,data owners and logistics administrators formulate different access strategy according their actual needs to ensure the privacy of user's personal data,and tests its functions and performance.2.In order to solve the problems of asymmetric information between the two parties,anti-counterfeit traceability is difficult to achieve,this thesis designs a traceability algorithm based on blockchain smart contracts.This method adopts the architecture of the consortium blockchain to restrict the access mechanism of blockchain network nodes,specific,in order to filtering out some malicious nodes,use node management to restrict node members joining the consortium blockchain network.Further,using smart contract technology to achieve the function of traceability information acquisition and verification,it successfully traceability in logistics system.Moreover,using smart contracts to ensure the authenticity of data sources and provides a tamper-proof transaction ledger.introduce regulators to effectively supervision the whole ecology,and to achieve anti-counterfeit traceability in the logistics process.Last,the thesis analyzes the experimental results.