A blockchain-based secure storage scheme for medical information

Abstract Medical data involves a large amount of personal information and is highly privacy sensitive. In the age big data, increasing informatization healthcare makes it vital that medical stored securely accurately. However, current subject to risk leakage difficult share. To address these issues, this paper proposes security storage solution based on hyperledger fabric attribute-based access control framework. The scheme first utilizes control, which allows dynamic fine-grained information, then stores in blockchain, can be secured tamper-proof by formulating corresponding smart contracts. addition, also incorporates IPFS technology relieve pressure blockchain. Experiments show proposed combining attributes blockchain not only ensure secure integrity but has high throughput when accessing