Shared medical data proxy re-encryption system and method based on alliance chain

Abstract

The invention discloses a shared medical data proxy re-encryption system and method based on an alliance chain, and the method comprises the steps: enabling a patient and a hospital institution to complete the identity registration at a grade judgment center, and enabling the grade judgment center to return the identity grade information G and a private key SKID to a registrant; when the patient uploads the electronic medical record information, encrypting the electronic medical record, embedding the identity level information G into the encrypted electronic medical record to obtain an encrypted electronic medical record, and uploading the encrypted electronic medical record to the proxy server; the grade judgment center embeds the user access condition set C into the re-encryption key RKID and uploads the re-encryption key RKID to the proxy server; the proxy server uploads the encrypted electronic medical record and the re-encrypted key RKID to a cloud memory; the block chain records uploading and downloading operations of the data in the cloud memory; after receiving a downloading request from a user, the proxy server judges the user permission, and if G belongs to C, re-encrypts the electronic medical record to be downloaded; and the user can download and decrypt the electronic medical record.

Description

technical field [0001] The invention belongs to the technical field of sharing electronic medical records between hospitals, and in particular relates to a system and method for proxy re-encryption of shared medical data based on an alliance chain. Background technique [0002] With the development of technology, the ways for people to obtain information are gradually diversified. At the same time, the risk of privacy leakage has also greatly increased. Information silos and data security issues in the medical field have always been a concern. The hospital information system HIS (hospital information system) stores a large number of electronic medical records, including the basic information of patients. This information is mainly managed by medical institutions. Relevant laws and regulations have strict restrictions and regulations on the transmission of private data, which causes patients' diagnosis and treatment data to be scattered in different storage areas and cannot ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a proxy re-encryption method for shared medical data based on the alliance chain, which utilizes the re-encryption technology and the uniqueness of the identity to fine-grained division of access rights, and solves the problems of medical data traceability and access control , to ensure the safe sharing of data

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