For individuals, accurate and full educational records are a valuable asset. Educational documents have been digitised in recent years. Two top concerns have been reported in the previously proposed systems and those issues have not been overcome. One is to achieve reliable and privacy-preserving storage of educational records, while the other issue is about understanding how the sharing of educational records and gurantees the process of sharing. Here, we propose a scheme for educational records based on blockchain storage and sharing, which incorporates blockchain, storage database and cryptography techniques to ensure a reliable and protected setting. This emerging technique is used in our proposal to make sure the security and reliability. The off-chain database stores the original educational records in encrypted form more specifically, while the records' hash information is stored on the blockchain. To ensure the protection of data storage, the off-chain records are regularly anchored with the hash data on the blockchain. Cryptography approaches are common to manage the encryption of documents and digital signature of messages.

Keywords : Cryptography, Security, Reliability, Decentralized, Encrypted.