IoT device identity security authentication method based on blockchain and fog computing

Abstract

The invention discloses an identity security authentication method for IoT devices based on blockchain and fog computing. The fog node closes; the fog node encrypts the random key and sends it to the device manager; the device manager writes the relevant information of the IoT device into the blockchain; the fog node queries the blockchain through the number of the IoT device, and obtains Information about IoT devices; the fog node verifies whether the serial number of the device stored in the blockchain is the same as the serial number of the device itself through the device identity security protocol DSCP, the fog node authentication phase is completed, and then the fog node adds a mapping to the IoT device and device access validity period; after IoT devices complete registration and authentication, mutual authentication can be performed between devices. The present invention utilizes block chain and fog computing to help the Internet of Things to ensure the security of devices and realize mutual authentication between devices.

Description

technical field [0001] The invention belongs to the technical field of cryptography and information security, and relates to an identity security authentication method for IoT devices based on blockchain and fog computing. Background technique [0002] In recent years, with the rapid development of physical networking technology, the Internet of Things technology and its innovative applications have brought great convenience to people's lives, making people and equipment, equipment and equipment connected together. Although the concept and application of the Internet of Things are no longer novel, many security issues and researches of the Internet of Things are in their infancy. The Internet of Things world has a huge number of devices, which increases the difficulty of data exchange between the Internet of Things and the Internet of Things and the Internet of Things. It also increases the security issues between information collection, transmission, and exchange, and is al...

AI Technical Summary

Problems solved by technology

Although the concepts and applications of the Internet of Things are no longer new, many security issues and research on the Internet of Things are in their infancy

The Internet of Things world has a huge number of devices, which increases the difficulty of data exchange between things-things and people-things. It also increases the security issues between information collection, transmission and exchange, and is also vulnerable to various attacks:( 1) Most devices are wireless, and due to various reasons, they are subject to security issues such as identity deception, message theft, and information tampering

(2) Many types of devices are resource constrained in terms of memory and processing power

However, most of the proposed solutions focus on solving data privacy, trust management, and security protection. Some scholars also study blockchain-based IoT device authentication, but most of them propose a framework or idea that is not suitable for deployment. In most resource-constrained IoT devices

Especially with the rise of fog computing, deploying fog nodes near edge devices can help solve the problem of limited device resources, but it does not consider the authentication between devices. However, there are still many aspects of device identity authentication based on blockchain. Work to be done and places to think

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