The Application of Blockchain Technology and Data Storage in Internet of Things System

This paper expounds the theory and framework of IoT information sharing security of blockchain technology from three aspects: information perception layer, data transmission layer and technology application layer. This project studies the security guarantee scheme of Internet of Things data sharing based on dual link structure. At the same time, this paper analyzes the design and implementation technology of IoT data storage system based on double-layer link. This project intends to use blockchain and other methods to improve the security and privacy of the Internet of Things. The Byzantine consistency method is adopted to improve the fault-tolerance of the network and establish a complete information security system of the Internet of Things. The research results show that the system can detect abnormal nodes with more than 90% accuracy. It is proved that the Internet of Things information security system has better anti-offensive and fault-tolerant capabilities. The research results of this project will provide new ideas for network security management in the Internet of Things environment in China.