Design And Realization Of Education Data Storage And Assurance System Based On Blockchain

With the rapid development of China's social economy,the demand for high-quality talents is becoming more and more urgent.As an important basis for evaluating talents,academic qualifications are more and more valued by people.The problems of high acquisition cost and single certificate content have led to the emergence of fraudulent academic qualifications and it is difficult to achieve talent assessment based on objective learning experience data.In view of the above phenomena,this thesis designs and implements a blockchain-based academic data storage and authentication system Wise Deposit,supports the secure storage of large amounts of heterogeneous educational data,and provides credible authentication services for educational data.The main content of the thesis includes:(1)Proposed a blockchain design scheme combining the public chain(Ethereum)and the consortium blockchain(Hyperledger Fabric)to reduce the storage cost while protecting the blockchain data security of the consortium blockchain(Hyperledger Fabric)and determining the heterogeneous academic data Classification rules and data structure of the objects on the blockchain.(2)Proposed a storage and query scheme combining IPFS+My SQL,designed and implemented a data query smart contract,which can simplify the amount of data stored on the blockchain and ensure the query performance of massive heterogeneous academic data,while meeting user query needs.(3)The academic data encryption scheme of the encryption algorithm is proposed to ensure the security of the academic data on the chain,and the scheme of blockchain combined with IPFS is adopted to realize the secure storage of academic data through the data storage smart contract.(4)Design the consortium chain block verification method and data protection smart contract based on the public chain,realize the secondary verification scheme based on the public chain,ensure the reliability of the consortium chain block and educational data,and provide the employer with security Letter's academic data verification service.Based on the above key technologies,the blockchain network and IPFS cluster were built,and the Wise Deposit prototype system was designed and implemented.The test results show that the Wise Deposit system can well meet the functional requirements for the storage,verification and display of multiple types of academic data,and it performs well in terms of security and performance.