Design of data sharing module based on medical block chain

Traditional medical data has varieties of weakness such as sharing, confidentiality which could not be ignored for a long time. To solve these drawbacks, this paper proposes a method based on block chain to share data with decent security. First, it analyzes recent problems in data sharing. Then it introduces relevant crucial technology, including homomorphic encryption, P2P, consensus mechanism, etc. Next, it establishes a data sharing model based on block chain which has a relatively detailed demand analysis, system architecture, etc. Finally, the paper summarizes and forecasts the future of medical data sharing technology.