Design And Implementation Of Electronic Depository System Based On Hyperledger Fabric

With the rapid development of the Internet,electronic data has played an increasingly important role in people’s lives,followed by more and more data fraud and infringement.So,problems of network trust and anti-counterfeiting cannot be ignored.In order to build trust in the Internet and safeguard people’s rights and interests,the concept of electronic depository has entered people’s field of vision.Today,electronic certificate of deposit plays an important role in digital works registration,electronic certificate deposit,online transaction deposit,and infringement certificate deposit.However,traditional electronic depository systems rely on an authoritative third party to judge the authenticity and validity of the electronic depository.At the same time,due to the characteristics of easy loss and tampering of electronic data,it is difficult to use it as evidence in actual judicial practice.In order to solve the above problems and make the electronic certificate truly exert legal effect,this paper uses the blockchain technology to design and implement an electronic certificate system based on Hyperledger Fabric to provide users with efficient,convenient,safe and reliable electronic certificate services.First of all,this paper investigates and analyzes the research status of electronic certificate deposit system combined with blockchain,and introduces the key technologies involved.Secondly,carry out a detailed demand analysis of the electronic certificate storage system,and determine the functional and non-functional requirements that the system needs to implement.Subsequently,two key problems encountered in the implementation of the Hyperledger Fabric based electronic certificate storage system,namely the data synchronization problem between the Hyperledger Fabric consortium chain and third-party storage,and the storage and sharing of large-capacity private data under the blockchain For the encryption problem,the Hyperledger Fabric data collaboration middleware model and the shareable encryption and storage scheme for large-capacity private data under the blockchain are proposed respectively.On the basis of the above research,the overall structure of the system and each specific function module are designed.Finally,the coding implementation of the system is completed,and through functional and performance tests,it is confirmed that the system meets the functional and non-functional requirements of the design.