Information security protection monitoring method of LED asynchronous control card

Abstract

The invention discloses an information security protection monitoring method of an LED asynchronous control card. The method comprises following measures of verifying mirror image security: using a chip electric fuse to store public key digests of a user for ensuring that an operating system is not damaged or forged when the LED asynchronous control card loads the mirror image; verifying identity security: when an upper computer in communication connection with the asynchronous control card starts building connection with the LED asynchronous control card, through verifying a digital certificate sent by the upper computer, verifying that a data transmission party has a playing qualification by the LED asynchronous control card; and verifying transmission security: after the upper computer and the LED asynchronous control card build connection, using a symmetrical public key encryption technique to encrypt transmission data. The method has the advantages that the method is based on an imx6 chip lower computer system; the CAAM encryption and decryption acceleration coprocessor of the system is utilized fully; secure transmission of massive data between the upper computer and the lower computer is realized; the program code cannot be maliciously modified; the normal playing of an LED large screen is ensured; and the security feature is improved.

Description

technical field [0001] The invention relates to the security of network communication of an embedded system, in particular to an information security monitoring method of an LED asynchronous control card based on a public key infrastructure. Background technique [0002] The LED display control system is divided into two types: synchronous control system and asynchronous control system in terms of display function. The synchronous control system mainly refers to that the LED display screen can display the image, video and other information displayed on the PC terminal in real time. The implementation of transmission and operation is more complicated. The asynchronous control system is also called the offline control system. The multimedia data to be displayed is edited by the host computer terminal, and is transferred to the memory in the asynchronous control system through serial ports, network ports and other interfaces in advance, and then controlled by the control syste...

AI Technical Summary

Problems solved by technology

[0004] However, the existing LED display asynchronous control system has great risks in data security. Since the LED asynchronous control card and the LED display are usually stored outdoors together in this system, once criminals find the control card, they can use it to replace it. Operating system, changing the transmitted data, pretending to be the publisher of the program and other means to play illegal videos in public places

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