Internet of things security authentication method, system and terminal based on national secret algorithm

Abstract

The disclosure discloses a security authentication method, system and terminal of the Internet of Things based on a national secret algorithm, which collects basic information of an Internet of Things terminal; encrypts the collected basic information of an Internet of Things terminal to obtain terminal identification information; combines the terminal identification information and The session key request is sent to the server; the terminal identification information is used for the server to verify the validity of the IoT terminal; the timeout judgment step: judge whether the set time period is exceeded, and if so, return to the terminal identification information preparation step; if not timeout , then continue to judge whether the session key response message fed back by the server is received; if the session key response message fed back by the server is received, the session key response message is decrypted and the session key is recovered; go to the next step; if not If it is received, return to the timeout judgment step; use the session key to encrypt the data to be transmitted of the IoT terminal, and transmit 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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