A blockchain-based credible and secure education experience data management scheme supporting for searchable encryption

With the in-depth application of new technologies such as big data in education fields, the storage and sharing model of student education records data still faces many challenges in terms of privacy protection and efficient transmission. In this paper, we propose a data security storage and sharing scheme based on consortium blockchain, which is a credible search scheme without verification. In our scheme, the implementation of data security storage is using the blockchain and storage server together. In detail, the smart contract provides protection for data keywords, the storage server stores data after data masking, and the blockchain ensures the traceability of query transactions. The need for precise privacy data is achieved by constructing a dictionary. Cryptographic techniques such as AES and RSA are used for encrypted storage of data, keywords, and digital signatures. Security analysis and performance evaluation shows that the availability, high efficiency, and privacy-preserving can be achieved. Meanwhile, this scheme has better robustness compared to other educational records data sharing models.