Access authentication method of internet-of-things fog device at cloud platform based on blockchain

Abstract

The present invention relates to an access authentication method of an internet-of-things fog device at a cloud platform based on a blockchain. An internet-of-things device initiates an agent request of accessing a cloud platform to an intelligent gateway with a blockchain module through the means of device authentication; the blockchain module of the intelligent gateway accesses a blockchain network and gives out device certificate of the internet-of-things device and the device certificate of the intelligent gateway to the blockchain network for requiring authentication, wherein the blockchain network determines whether the request link of the intelligent gateway is frequently changed in a short period or has safety risk or not, and then verifies the legality of the intelligent gateway certificate; the same mode is employed to verify the legality of the device certificate of the internet-of-things device; and if the internet-of-things device with the blockchain module also can initiate the agent request of accessing the cloud platform, the authentication access mode is the same as the authentication mode of the intelligent gateway. The dependence on the cloud platform and the usage frequency are reduced, and the risks of the cloud platform being sniffered and injected at the aspect of the device access are reduced.

Description

technical field [0001] The invention relates to a block chain-based method for accessing and authenticating an Internet of Things fog terminal device on a cloud platform. Background technique [0002] In the authentication scheme for similar Internet of Things fog devices to connect to the cloud platform, the fog device generally initiates a request to the cloud platform directly, or the fog device initiates a request to an intelligent gateway authorized agent to the cloud platform. This approach has several disadvantages: [0003] First of all, this mode increases the risk that the cloud will suffer from a large number of invalid authentication requests and valid requests will not be responded to; [0004] Secondly, this mode can realize nearby authentication and distributed authentication for the device authentication mode, and effectively utilizes the characteristics of blockchain to realize fog end authentication; [0005] Finally, when the number of fog devices increa...

AI Technical Summary

Problems solved by technology

[0005] Finally, when the number of fog devices increases to a certain limit, if the cloud authentication system does not expand accordingly, it will not be able to meet the original authentication requirements, and the authentication speed and authentication response rate will also decrease accordingly.

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