Dynamic encryption method of IoT devices based on login serial number

Abstract

This application discloses a dynamic encryption method for an Internet of Things device based on a login serial number. The method includes: the Internet of Things device generates a first dynamic key; the Internet of Things device uses the generated first dynamic key to encrypt a login message to obtain an encrypted login message. Text; IoT device sends encrypted login message to IoT platform; IoT platform receives encrypted login message, verifies encrypted login message, and IoT platform generates login reply message after verification; IoT platform sends login reply The message is sent to the IoT device; the IoT device receives the login reply message, and verifies the login reply message; the two-way identity authentication between the IoT device and the IoT platform is successful, and the IoT platform and the IoT device send each other Ordinary datagram. The invention generates a pseudo-random dynamic key from the static key and the login serial number of the Internet of Things device, thereby improving the communication security between the Internet of Things device and the Internet of Things platform.

Description

technical field [0001] The present invention relates to the technical field of Internet of Things and data security, and more specifically, relates to a dynamic encryption method of an Internet of Things device based on a login serial number. Background technique [0002] The Internet of Things is a highly integrated and comprehensive application of the new generation of information technology, which is of great significance to the new round of industrial transformation and the green, intelligent and sustainable development of the economy and society. Because of its huge growth potential, it has become the strategic commanding heights of today's economic development and technological innovation, and has become the forerunner for various countries to build new social models and reshape the country's long-term competitiveness. At present, with the rapid development of the Internet of Things technology, the ecological circle is becoming more and more perfect, the application fi...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to limited equipment resources, it is difficult to apply complex algorithms

[0005] In traditional Internet communication, secure transport layer protocols such as SSL / TLS are usually used to implement data encryption to ensure data security, but secure transport layer protocols such as SSL / TLS often rely on asymmetric encryption algorithms such as RSA, which affects the computing speed of the processor. and high storage resource requirements

Due to its low cost and low power consumption, IoT devices usually use embedded microcontrollers with relatively low computing power and relatively tight storage resources as the main control chip, which makes it difficult to implement complex asymmetric encryption algorithms.

Therefore, it is difficult to directly apply the secure transmission protocols in the traditional Internet to IoT devices.

[0006] 2. The symmetric encryption method based on the static key has relatively low security

This method uses a symmetric encryption algorithm with less resource consumption and does not require dynamic key negotiation, which is convenient for application in embedded microcontrollers. However, the same static key is always used, and long-term use will increase the risk of the key being cracked. Effective defense against replay attacks

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