Research And Implementation Of Digital Asset Deposit System Based On Blockchain Technology

Digital assets are the products of modern high technology,which need to be stored in a timely manner and tamper-resistant,and at the same time,it is easy to share,verify and other operations.The application fields of data certificate are extremely wide,including but not limited to medical treatment,finance,intellectual property,electronic contract,evidence preservation,etc.Most traditional data storage systems cooperate with third-party platforms,rely on centralized management,and lack security and reliability.After analyzing the current status of domestic and foreign research in the field of blockchain technology and data storage,the method of combining electronic storage and blockchain has better solved the problems of third-party platforms in storage.Blockchain technology has the characteristics of decentralization and tamper-resistance.It can ensure the security and reliability of data in terms of data storage and meet the requirements of data storage certificate scenarios.The real protection address of the deposit card system is reduced.Therefore,in response to this problem,a proprietary protection scheme based on a bilinear pairing threshold ring signature is proposed on the basis of the blockchain.This scheme divides the signature into several The cycle and public key are fixed.The change of each cycle of the private key transfer is updated by a one-way function.Security analysis shows that this scheme meets both the nature of the threshold ring signature and the requirements of unforgeability and confidentiality.The nodes in the blockchain store the data on the entire chain,which makes the burden of the nodes increase with the increase of nodes and the upload of data,so the efficiency of data query will become lower and lower,and the waiting time will increase.Aiming at the problem of low query efficiency of the blockchain system,a scheme combining a distributed hash table and the Chord algorithm is proposed to optimize the query algorithm.Experiments show that with the increase of nodes,the network communication load of the Chord algorithm does not increase significantly,which improves the query efficiency.Using the blockchain technology,a complete data deposit management system based on the blockchain technology is designed to ensure the security of data encryption and user authentication.The system uses the alliance chain architecture to sort and store different data types.Hyperledger Fabric 1.0 is built to implement thecertificate storage platform and various module functions.The corresponding smart contracts are written to implement registration,upload,download,and query functions.The user and the underlying data provide a friendly interactive interface.Blockchain technology and threshold ring signature scheme effectively ensure the authenticity,validity and security of the data in the certificate deposit system.It is scalable and can withstand blockchain attacks such as double-spend attacks.The ring signature scheme provides partial support for applications in other fields such as economy and finance.