Internet of Things security authentication method, system and terminal based on national cryptographic algorithm

Abstract

The invention discloses an Internet of Things security authentication method, system and terminal based on a national cryptographic algorithm. The method comprises the steps of collecting basic information of an Internet of Things terminal; encrypting the acquired basic information of the Internet of Things terminal to obtain terminal identification information; sending the terminal identificationinformation and the session key request to a server, wherein the terminal identification information is used for verifying the validity of the Internet of Things terminal by the server; an overtime judgment step: judging whether a set time period is exceeded or not, and if so, returning to the terminal identification information preparation step, and if not, continuing to judge whether a sessionkey response message fed back by the server is received or not; if a session key response message fed back by the server is received, decrypting the session key response message and recovering the session key; entering the next step; if not, returning to the overtime judgment step; and encrypting to-be-transmitted data of the Internet of Things terminal by adopting the session key, and transmitting the encrypted data to the server.

Description

technical field [0001] The present disclosure relates to the technical field of Internet of Things terminal data encryption and decryption, and in particular to a security authentication method, system and terminal of the Internet of Things based on a national secret algorithm. Background technique [0002] The statements in this section merely mention background art related to the present disclosure and do not necessarily constitute prior art. [0003] At present, the terminal data in my country's Internet of Things industry is in a state of no protection and weak protection. The data uploaded to the server by the Internet of Things terminal lacks effective encryption methods and has low security. [0004] In the process of realizing the present disclosure, the inventors found that the following technical problems existed in the prior art: [0005] In many cases, IoT terminals only have dozens of Kbytes or even a few Kbytes of ROM available, and RAM only a few hundred byte...

AI Technical Summary

Problems solved by technology

[0005] In many cases, IoT terminals only have dozens of Kbytes or even a few Kbytes of ROM available, and RAM only a few hundred bytes to a few Kbytes; at the same time, IoT terminal processors have weak performance and low main frequency , and there are quite a few 8-bit and 16-bit single-chip microcomputers, which cannot apply complex public-key cryptographic algorithms (such as SM2) for key and session management; and symmetric cryptography with low complexity also has algorithm implementations in IoT terminals. The problem of poor efficiency and long time-consuming encryption and decryption

[0006] In many IoT systems, in order to reduce the complexity of the system, the key is usually fixed inside the microprocessor, which is obviously not safe

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