Encrypted communication method and encrypted communication device based on narrowband internet of things

Abstract

The invention discloses an encrypted communication method and an encrypted communication device based on the narrowband Internet of Things. The communication method includes the following steps: S1. The server performs identity authentication on the terminal node through the narrowband Internet of Things communication module. If the identity authentication is successful, establish Communication connection; if the identity authentication fails, it ends; S2. The server sends the command to generate the secret key table and the secret key seed to the terminal node through the narrowband Internet of Things communication module, and the terminal node generates the same secret key table as the server after receiving the secret key seed ; S3. The terminal node generates a secret key and encrypts the data; S4. The server decrypts the communication content, and then sends it to the user client. The present invention uses the key seed to enable the terminal node and the server to have the same key table, and uses the random number coordinate method to share the key to improve the security of the key, so that the identity between the NB‑IoT terminal and the server can be efficiently Authentication, thereby improving the security of communication.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an encrypted communication method and an encrypted communication device based on narrowband Internet of Things. Background technique [0002] The Internet of Things refers to the deployment of various devices with certain perception, calculation, execution and communication capabilities to obtain information in the physical world, and to realize information transmission, collaboration and processing through the network, thereby realizing the interconnection between people and things, and things and things. The internet. In short, the Internet of Things is to realize the interconnection between people and things, things and things. Its applications include various aspects such as smart grid, smart agriculture, smart transportation, and environmental detection. The development of the Internet of Things is known as the third wave of the information industry after...

AI Technical Summary

Problems solved by technology

However, with the increase in the number and scale of NB-IoT systems, the interconnection of NB-IoT application systems, and the centralized management of data processing platforms, NB-IoT security issues will gradually emerge, and will affect NB-IoT with an avalanche effect. -IoT industry, by then it will be too late to make up for it

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