EMR cross-domain sharing scheme based on consortium chain and proxy re-encryption

doi:10.3969/j.issn.1000-1565.2025.02.009

Abstract

Abstract: Electronic medical records(EMR)can be safely and efficiently shared across domains, bringing great convenience to patients seeking medical treatment across domains. However, traditional centralized electronic medical record management methods have security issues such as privacy leakage, single point of failure, and medical record ownership, which are not conducive to patients seeking medical treatment across domains. This article proposes a cross-domain sharing scheme for electronic medical records based on consortium chain and proxy re-encryption. By combining blockchain and Inter Planetary File System, a distributed file storage system is provided to avoid the problem of single point of failure caused by centralized management. Patients authorize cross-domain data users to decrypt medical record ciphertext through proxy re-encryption algorithms, ensuring that only authorized users can access files and achieving ciphertext conversion between different trust domains. This scheme can resist multiple types of attacks and has a lower computational cost.

Key words: electronic medical records, blockchain, cross-domain sharing, proxy re-encryption

CLC Number:

TP309.2

YANG Xiaohui,QIN Xuhan. EMR cross-domain sharing scheme based on consortium chain and proxy re-encryption[J]. Journal of Hebei University(Natural Science Edition), 2025, 45(2): 185-191.

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