Medical Information Storage Model Based on Block Chain

How to effectively control data access rights in the medical field and securely share data between hospitals is an important challenge in the standardization of medical information in China. This paper proposes a model of data access and secure sharing by using the decentralization, tamper resistance and traceability of blockchain. The system utilizes attribute-based encryption technology to ensure the authenticity of information and solve the problems of information asymmetry in the traditional medical field, difficulty in information inquiry, difficulty in positioning of responsible persons, and inability to trace information.