Research and Development of Medical Record Storage System Based
on Blockchain
Abstract
With the rapid development of the Internet, the medical industry has shown a trend of
informatization. EMR (Electronic Medical Record) records the raw data generated by patients
during hospital treatment, and has been widely used in major medical centers. However, most
existing systems store data in a central database. This centralized storage model faces
problems such as information security and data sharing. The blockchain has the
characteristics of decentralization, non-tampering, security and credibility, and is suitable for
solving the above problems faced by medical data storage.
This article uses blockchain technology to design and develop a medical record storage
and sharing system. Complete the test in the form of a web client, the back page uses the SSM
open source framework to handle business logic, the blockchain is implemented using
Hyperledger fabric framework, and the chain code is developed by go. In response to the
security and privacy protection problems of traditional EMR systems, this system adds
encryption and authorization functions based on the general medical record service. Using the
RAS asymmetric encryption algorithm, the data is stored in two parts after being encrypted by
the private key. The public information of the medical data is saved on the fabric network,
and the relevant medical files are saved on the local server. Patients have control on their own
electronic medical records, and medical institutions and researchers need to apply for
authorization from users to obtain access.
This system combines the web client and blockchain storage, trying to solve the data
ownership misalignment and privacy security problems in the traditional EMR system. It is an
attempt, proved the feasibility of applying blockchain technology to the medical field, and
proposed a new idea for solving the problems of poor privacy and difficulty in sharing
medical record data.
Key Words：Blockchain；Electronic Medical Record；Encryption；Authorization
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