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A trusted distributed data sharing method for the Internet of Things based on blockchain

A distributed data and blockchain technology, applied in digital transmission systems, secure communication devices, user identity/authority verification, etc., can solve problems such as wasting network bandwidth, low efficiency, and large data volumes, and reduce operating costs , the effect of ensuring safety

Active Publication Date: 2020-10-02
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A trusted distributed data sharing method for the Internet of Things based on blockchain
  • A trusted distributed data sharing method for the Internet of Things based on blockchain
  • A trusted distributed data sharing method for the Internet of Things based on blockchain

Examples

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Effect test

example 1

[0058] The application background of this example is the Internet of Things. In this background, there are four independent sub-networks. The manager nodes of each sub-network form a blockchain network. First, user 1 in sub-network 1 needs to apply for registration with sub-network 1. After the administrator of subnet 1 passes the review, user 1 can log in and directly access the data resources of subnet 1; then user 1 can continue to send access requests to subnet 2 through the PSPN of subnet 1, but authorization verification is required. User 1 sends an authorization request to subnet 2. After the administrator of subnet 2 reviews the authorization request, user 1 will get an authorization information verification code, through which the data resources of subnet 2 can be accessed.

example 2

[0060] Among the four departments of a company, the managers of the four departments join the blockchain layer. Employee 1 of department 1 needs to request registration from the manager of department 1 first. After the registration is successful, they can directly access the files of the department. If the department If employee 1 of 1 needs to access the files of department 2, the manager of department 2 needs to authorize through the smart contract of the blockchain network.

[0061] The present invention has following benefit effect:

[0062] ① Credible issues: The existing data sharing models basically rely on trusted third parties, and this third-party trusted model is solidified and difficult to change. The distributed sharing method of the present invention eliminates the problem of third-party trustworthiness, and the data is owned by the local network, so that the producer's data is fully guaranteed.

[0063] ②Storage problem: The smart devices of the Industrial Inte...

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Abstract

The invention discloses a trusted distributed data sharing method of the Internet of Things based on a block chain, and a system realized by the method includes system structural elements such as a resource layer, a network layer, a block chain layer, and an application layer. Each device / user node is logically combined to form a double-layer overlay network, and a pre-selected edge gateway node with large storage and computing capabilities is set inside each subnet to act as a super node; these PSPNs also form a blockchain layer, using Smart contracts, combined with on-chain and off-chain storage, realize safe and efficient decentralized distributed data sharing and access control. The present invention uses P2P technology to solve the problem of effective communication between different data source entities in the industrial Internet of Things environment; solve the problem of sharing efficiency of massive data in the Internet of Things scene; effectively solve the decentralization of trusted data sharing and auditable issues, reducing the operating and maintenance costs of the system.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/06H04L9/32
CPCH04L67/104H04L67/02H04L63/0442H04L63/062H04L9/3247H04L67/56H04L9/50
Inventor 杨磊王江干邹宛蓉
Owner HUNAN UNIV
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