Privacy Protection of Personal Education Information on Blockchain

Personal education information can be obtained online, which is convenient for inquiries, but at the same time brings the threat of privacy leakage. At present, everyone's education information is managed by a centralized organization. Centralized management has some security and privacy risks. Once the central management agency has a security problem, it may lead to the disclosure of everyone's personal information. Therefore, a privacy protection scheme for personal education information based on attribute-based encryption and homomorphic encryption on blockchain is proposed. Blockchain is a decentralized system and its anti-tampering features are very suitable for protecting data security. In addition, an attribute-based encryption method that performs fine-grained access control to the data content is proposed, which can decrypt the corresponding content according to the attributes held by the user. The use of homomorphic encryption can provide the required query results without knowing the plaintext. Access control, as well as key management, is implemented on Ethereum with smart contracts. Finally, security analysis and an example of privacy protection of personal education information are presented, and time performance is analyzed.