Security Information Sharing Scheme of Personal Health Record Referral on the Medical Cloud Platform
LYU Chenyu
SHEN Jinan
DENG Xuejian
CHEN Xinpeng
DU Qiuyang
LIANG Fang
Abstract：To address the issues of privacy leakage and unsatisfactory encryption and decryption efficiency in sharing personal health records(PHR)on the medical cloud platform,we proposed an improved linear secret sharing based ciphertext attribute proxy re-encryption scheme(LCPS)was proposed,using the referral scenario of patients with Parkinson's disease in the medical cloud platform as an example.This scheme utilized linear secret sharing technology to hide private attributes in access policies,reducing the risk of privacy leakage caused by policy exposure.The scheme also improved the proxy re-encryption algorithm,reducing complex bilinear operations and enhancing encryption and decryption efficiency.The results showed that encryption and decryption computation time of the LCPS scheme was found to be lower than other schemes.Under the q-decisional bilinear Diffie-Hellman exponent(q-DBHE)hardness assumption,it exhibited indistinguishability under chosen-plaintext attack(IND-CPA).The scheme is portable and equally applicable to the secure sharing of personal health records during the referral of other diseases in the medical cloud.
Keywords：medical cloudattribute-based encryptionlinear secret sharing schemehiding access policiesproxy re-encryptionpersonal health recordprivacy preserving
Publication Date：2024-06-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 198-204 )