Internet of Things credible distributed data sharing method based on block chain

Abstract

The invention discloses an Internet of Things credible distributed data sharing method based on a block chain. A system realized by the method comprises system structure elements such as a resource layer, a network layer, a block chain layer and an application layer. All the equipment / user nodes are logically combined to form a double-layer overlay network, and a pre-selected edge gateway node with large storage and calculation capacity is arranged in each subnet to serve as a super node. The PSPNs form a block chain layer at the same time, and safe and efficient decentralized distributed datasharing access control is realized by utilizing an intelligent contract and combining on-chain and off-chain storage. According to the method, the P2P technology is utilized, and the problem of effective communication between different data source entities in the industrial Internet of Things environment is solved on the aspect of system structure; the sharing efficiency problem of mass data in an Internet of Things scene is solved; the problems of decentralization and auditing of credible sharing of data are effectively solved, and the operation and maintenance cost of the system is reduced.

Description

technical field [0001] The invention discloses a blockchain-based distributed data sharing method for the Internet of Things, and particularly relates to technical fields such as blockchain, cryptography, data authority management, and distributed storage. Background technique [0002] With the rapid development of Internet technology, especially the advent of the 5G era, the interconnection and intelligence of everything is the future development trend. The scale of the Internet of Things is gradually expanding, and massive data is generated from it. How to effectively share these data, so as to dig out the hidden value of different source data, is of great significance to the intelligent transformation of the Internet of Things. For example, the wireless sensor network (WSN) in the Internet of Things will collect data generated by various smart devices inside it, and people can further jointly analyze these data to obtain potential value. However, the data in the Internet...

AI Technical Summary

Problems solved by technology

However, the scattered data sources of the Internet of Things, the large amount of data, the sensitivity of data, and the rapid expansion of the Internet of Things all pose challenges to the centralized sharing model similar to the cloud: 1) Cost issues: due to the large scale of the Internet of Things , Data sources are scattered, and building a centralized sharing platform requires huge operating and maintenance costs; 2) Security issues: The centralized sharing model generally has a single point of failure defect. At the same time, although the traditional cloud-centric method can introduce reliable Trusted third-party auditors to provide users with data integrity assurance, but cannot guarantee data privacy

3) Efficiency and flexibility issues: In the centralized sharing model, we need to frequently interact with the sharing center, which will lead to inefficiency and inflexibility; if the center is a cloud server, it will be a great waste network bandwidth

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