Abstract
The data stored into the blockchain is immutable, which enhances the security of the data. In this work, we propose a blockchain-based scheme for electronic medical record data sharing that enables third-party data users to share patient’s data without violating patient privacy. First, we propose a system model of the scheme. The scheme is constructed using a private blockchain and a consortium blockchain. The private blockchain stores the patient’s diagnostic record (DR). The consortium blockchain stores secure indexes composed of keywords of DRs. Diagnostic records and keywords take the form of encrypted ciphertext information. Second, we use public encryption with keyword search (PEKS) technology to achieve a secure search of keywords on the consortium blockchain. In the decryption phase, we use proxy re-encryption (PRE) technology to enable third-party data users to securely access patient data. Finally, we evaluate the performance of the scheme through numerical simulation experiments.
Supported by National Natural Science Foundation of China under Grants 61562077, 61662071, 61662069, 61772022.
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Niu, S., Li, W., Liu, W. (2020). Electronic Health Record Data Sharing Cryptographic Algorithm Based on Blockchain. In: Sun, X., Wang, J., Bertino, E. (eds) Artificial Intelligence and Security. ICAIS 2020. Communications in Computer and Information Science, vol 1254. Springer, Singapore. https://doi.org/10.1007/978-981-15-8101-4_33
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DOI: https://doi.org/10.1007/978-981-15-8101-4_33
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