Research On Blockchain-Based Trusted Transaction Mechanism For Crowdsourcing Logistics

In recent years,with the rapid development of the economy and the popularity of ecommerce,the traditional logistics industry is facing the challenges of scattered logistics resources that are difficult to gather,diverse logistics needs that are difficult to meet and high logistics costs.At the same time,with the deepening of the concept of sharing economy,crowdsourcing logistics is recognized by the public for its effective integration of social logistics resources,flexible logistics services and low logistics costs,and provides a new solution for the traditional logistics industry.However,the analysis of the existing crowdsourcing logistics platform found the following problems: 1)The risk of leakage of user identity and privacy information.Due to the centralised storage and management of user identity data on the platform,users not only lose the right to manage their personal identity independently,but also easily lead to the leakage of private data and the possibility of tampering;2)Crowdsourcing trading funds escrow risk.The platform needs to act as the custodian of funds in the whole trading process,it is easy to cause traders’ trust problems caused by platform dishonesty.Therefore,in the context of sharing economy,this thesis applies blockchain technology to crowdsourcing logistics platforms.Then,combined with the needs of crowdsourcing logistics scenarios,an in-depth research on the trusted transaction mechanism of blockchain-based crowdsourcing logistics is carried out,with the main work as follows:(1)By analyzing the defects of identity information management in existing crowdsourcing logistics platforms,a trusted identity authentication management method based on UTXO model blockchain is proposed.First,the method implements identity registration,identity verification,identity revocation,and identity authentication through blockchain technology.On this basis,for the risk of storing user privacy data on the chain,a hybrid encryption and decryption scheme is used to securely store and share personal information on the chain.To address the issue of platform authentication of user identity,users can log in to the crowdsourcing logistics platform with real-name requirement by zero-knowledge proof with trusted identity credentials.Then,the security analysis of the authentication management method is conducted to verify the effectiveness of the method in this thesis.Finally,the method comparison and performance analysis show that the method can effectively meet the functional and performance requirements of authentication management.(2)By analyzing the shortcomings of the existing crowdsourcing logistics system in which the third-party platform serves as the transaction fund escrow,an online physical transaction method based on the UTXO model blockchain is proposed.First,the UTXO model blockchain transaction is described formally.Then,the specific workflow of the deposit phase,commitment phase and settlement phase in the physical transaction method is designed in detail in conjunction with the crowdsourcing logistics transaction process.After that,the transaction method flow is modeled according to the temporal Petri net to verify the security and fairness of the transaction method.Finally,the comparative evaluation and transaction performance analysis of this thesis’ s method prove that this thesis’ s transaction method can meet the system’s universality and feasibility with low-cost transactions.(3)Based on the two methods proposed above,the overall module of the crowdsourcing logistics prototype system was designed.Then use the existing blockchain technology and cryptography technology to complete the design,implementation and testing of the crowdsourcing logistics prototype system.