Design And Implementation Of Interconnected System Of Medical Insurance And E-health Business Based On Blockchain

In recent years,especially in 2020,the health insurance industry has seen new opportunities for development due to the sudden outbreak of the Covid-19 pandemic and rising public health awareness.However,the development of the insurance industry is also being constrained by cumbersome health notification,difficulties in underwriting insurance and inefficient claims settlement.Additionally,the traditional model of storing policy and medical record data by individual insurance companies and medical institutions has also brought about the problem of data silos,which is not conducive to data sharing among institutions and is partly responsible for the above-mentioned difficulties in the insurance industry.The decentralized nature of blockchain technology,as well as the difficulty in tampering with data,provide a new way to solve the aboves problems.This thesis addresses the above problems in the development of the insurance industry and designs and implements a blockchain technology-based health insurance and e-healthcare business linkage system.On the one hand,the system data storage adopts a combination of on-chain and off-chain approach,storing key information in the on-chain blockchain network and storing the huge medical record information and policy information in the cloud database,so that the blockchain network and the cloud database complement each other’s advantages,guaranteeing the safe storage of users’ private data while ensuring the light weight of the blockchain ledger.On the other hand,in order to guarantee users’ privacy and medical record data,this thesis designs and implements an access control mechanism combining symmetric and asymmetric encryption to ensure that the personal privacy data,which is precisely combined with users’ identity,is stored in the database in the form of cipher text,and that doctors can only access the detailed medical record information of users with the permission of the users.In this thesis,we also analyse and design the data structure in the system,smart contracts for related functions and front-end web pages,and buildthe underlying blockchain network based on Hyperledger Fabric in a Linux environment,and implements the various functional modules of the system in combination with Vue and Element.This thesis applies blockchain technology and access control to health insurance and e-healthcare,which increases the efficiency of sharing user policy information and electronic medical record information while protecting users’ personal privacy,and effectively resolves the problems of cumbersome health notification,difficult insurance underwriting and inefficient claims settlement in the insurance industry.