Abstract
With the popularity of the internet 5G network, the network constructions of hospitals have also rapidly developed. Operations management in the healthcare system is becoming paperless, for example, via a shared electronic medical record (EMR) system. A shared electronic medical record system plays an important role in reducing diagnosis costs and improving diagnostic accuracy. In the traditional electronic medical record system, centralized database storage is typically used. Once there is a problem with the data storage, it could cause data privacy disclosure and security risks. Blockchain is tamper-proof and data traceable. It can ensure the security and correctness of data. Proxy re-encryption technology can ensure the safe sharing and transmission of relatively sensitive data. Based on the above situation, we propose an electronic medical record system based on consortium blockchain and proxy re-encryption to solve the problem of EMR security sharing. Electronic equipment in this process is connected to the blockchain network, and the security of data access is ensured through the automatic execution of blockchain chaincodes; the attribute-based access control method ensures fine-grained access to the data and improves the system security. Compared with the existing electronic medical records based on cloud storage, the system not only realizes the sharing of electronic medical records, but it also has advantages in privacy protection, access control, data security, etc.
Highlights
Based on the above situation, this study proposes an electronic medical record (EMR) data sharing mechanism based on the advantages of anti-tampering and traceability of the consortium blockchain and the security authorization characteristics of proxy re-encryption
EMR data structure refers to the electronic medical record, which Pid refers to the patient’s ID, Did refers to the doctor’s ID, createTime refers to the creation time of the EMR, the EncryptedSickDetail field refers to the encrypted sick detail, the EncryptedDrugDetail field refers to the encrypted drug detail, and doctorSignature refers to the signature of the diagnostic doctor
(736 bits), L EMR is the length of the electronic medical record data (768 bits), L Ac is the length of access (800 bits), and LOther is the length of other message data (32 bits)
Summary
E-health appeared in the early 21st century; it refers to the use of modern information and communication technology, to provide medical services in the health sector [1]. If an attacker forges or tampers with the data stored in the shared electronic medical record system, it will have a significant impact on the entire system, resulting in massive data loss and errors. Based on the above situation, this study proposes an EMR data sharing mechanism based on the advantages of anti-tampering and traceability of the consortium blockchain and the security authorization characteristics of proxy re-encryption. The proposed scheme, such that hospitals join the medical consortium blockchain, store the EMR data generated by patients in the consortium blockchain service center, and protect the data security according to the relevant national laws and regulations.
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