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

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

Unmanned vehicle (UDV) delivery technology can meet the special needs of users and realize efficient and flexible distribution of logistics orders. However, there are risks of order data leakage and tampering in the intelligent logistics distribution environment. To solve this problem, this paper designs and implements a system based on the Hyperledger Fabric blockchain platform. Based on the blockchain technology, the system adopts a distributed architecture to establish a secure and trustworthy logistics data management platform to achieve the integrity and traceability of data in the logistics process. The data dual-chain storage strategy is used to ensure the efficiency of data queries. Furthermore, four smart contracts including order management contract (OMC), access control management contract (ACC), access control policy management contract (ACPC), and environmental data management contract (EDC) are designed in combination with the attribute-based access control strategy. By triggering the smart contract, the controllable access of order data can be realized. Finally, two groups of experiments are designed to test the performance of the system. Experimental results show that the proposed system can maintain high throughput in a large-scale request environment under the premise of ensuring data security.