Abstract
AbstractAiming at the problems of the traditional centralized data sharing platform, such as poor data privacy protection ability, insufficient scalability of the system and poor interaction ability, this paper proposes a distributed data sharing system architecture based on the Internet of Things and blockchain technology. In this system, the distributed consensus mechanism of blockchain and the distributed storage technology are employed to manage the access and storage of Internet of Things data in a secure manner. Up to the physical topology of the network, a hierarchical blockchain network architecture is proposed for local network data storage and global network data sharing, which reduces networking complexity and improves the scalability of the system. In addition, smart contract and distributed machine learning are adopted to design automatic processing functions for different types of data (public or private) and supervise the data sharing process, improving both the security and interactive ability of the system.
Highlights
In the information age, data as an important strategic resource, is experiencing explosive growth
We proposes a distributed data sharing system based on Internet of Things and blockchain
The consortium blockchain is called a permissioned blockchain, whose consensus is to be joined by members of the blockchain, whose data reading and writing permissions are set according to the consensus proposal, and the participation of nodes requires the consent of other nodes
Summary
Data as an important strategic resource, is experiencing explosive growth. Et al proposed a medical data sharing scheme based on blockchain, which is used to realize the sharing of medical research data among research and development enterprise in the medical field, promoting the cooperative research and development of pharmaceutical products among enterprises, and reduce the cost of drug research and development among enterprises[9] These studies are limited to specific applications, and do not take into full consideration to construct the system from the aspects of data access, storage, sharing and analysis, etc. Through the functional architecture of data access, data processing and data application, the hierarchical multi chain structure and the corresponding smart contract covering the automatic access, storage, access and processing of data in the Internet of Things with different permissions and levels are realized Besides both data privacy and data value mining are taken into account.
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