Dynamic encryption method for Internet of Things device based on login serial number

Abstract

The application discloses a dynamic encryption method for an Internet of Things device based on a login serial number. The method includes steps: the Internet of Things device generates a first dynamic secret key; the Internet of Things device encrypts a login message by employing the generated first dynamic secret key and obtains an encrypted login message; the Internet of Things device transmitsthe encrypted login message to an Internet of Things platform; the Internet of Things platform receives and verifies the encrypted login message, and generates a login reply message after verification; the Internet of Things platform transmits the login reply message to the Internet of Things device; the Internet of Things device receives and verifies the login reply message; and bidirectional identity authentication of the Internet of Things device and the Internet of Things platform is successful, and the Internet of Things platform and the Internet of Things device mutually transmit ordinary data messages. According to the method, the pseudo-random dynamic secret key is generated through a static secret key and the login serial number of the Internet of Things device, and the securityof communication between the Internet of Things device and the Internet of Things platform is improved.

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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