Audio and video monitoring device, data encryption and decryption method, and audio and video display device

Abstract

The invention discloses an audio and video monitoring device, a data encryption and decryption method therefore, and an audio and video display device, and relates to the technical field of data security. The encryption method comprises the steps that a random number generator generates a random number as a symmetric cipher; collected audio and video data is symmetrically encrypted through the symmetric cipher, thereby obtaining an encrypted audio and video file; a corresponding first identification public key is obtained from an identification public key matrix according to an audio and video display device identifier; the symmetric cipher is symmetrically encrypted by employing the first identification public key, thereby obtaining a key file; the key file is signed through a first identification private key of a local device; the encrypted audio and video file and the signed key file are integrated into an encrypted data file; and the encrypted data file is sent to the audio and video display device. The transmitted audio and video data after collection is ciphertext; the audio and video data is prevented from being intercepted, stolen and tampered; and the problems of leakage and system harm are avoided.

Description

technical field [0001] The invention relates to the technical field of data security, in particular to a video and audio monitoring device, a data encryption and decryption method thereof, and a video and audio display device. Background technique [0002] In the past ten years, the security and audio-visual monitoring industries have developed rapidly, especially in recent years with the rapid development of the Internet, the security industry, audio-visual monitoring systems and products have become popular on the Internet. Today, audio-visual monitoring systems, Smart remote surveillance camera systems and products for individuals and households are ubiquitous, widely used, constantly innovating, and increasing in demand. [0003] In the existing security industry, various video and audio cameras, monitoring system control centers, and monitoring clients (PC and mobile APP) on various platforms build a closed loop through network connections (wired network and wireless ne...

AI Technical Summary

Problems solved by technology

[0004] However, since the video and audio data collected and transmitted in the entire system are in plain text, they are easily intercepted, embezzled, tampered with, etc., resulting in leaks, system hazards, and wrong judgments.

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