JPEG image encryption transmission method

Abstract

The invention relates to a JPEG image encryption transmission method. The method is characterized by comprising the steps that an image receiver and an image sender establish a safety channel and an image transmission channel, the image receiver sends image request data to the image sender through the safety channel, after the image sender receives the image request data, a time-out mechanism is started to read corresponding JPEG image data and process the corresponding JPEG image data, after being processed, the JPEG image data are subpackaged, then encrypted and sent to the image receiver, after receiving the data, the image receiver conducts decryption on the data, the image receiver does not receive the complete image data, an image data request of the missing portion is sent in the time-out mechanism, and the image sender transmits some encrypted and subpackaged data before the time-out mechanism. The method has the advantages of being capable of efficiently conducting encryption transmission on JPEG images, and achieving safe and reliable JPEG image transmission through the smaller amount of calculation and smaller amount of network data transmission.

Description

technical field [0001] The invention relates to a JPEG image encryption transmission method. Background technique [0002] JPEG image has become the main format of current image storage because of its good compression performance and the support of many manufacturers. With the popularity of mobile terminals with camera functions and the increase of cameras used for security monitoring, image data transmission is becoming more and more frequent. Most of these images involve personal privacy or security needs and cannot be leaked, so it is necessary to perform image data transmission. encryption. Although various encryption methods for JPEG images have been designed, and secure communication methods have developed relatively maturely, the amount of compressed image data that needs to be transmitted is relatively large, and the sender or receiver of the image is usually an embedded device or a mobile device. The computing power of its CPU is weaker than that of general PC ter...

AI Technical Summary

Problems solved by technology

Although various encryption methods for JPEG images have been designed, and secure communication methods have developed relatively maturely, the amount of compressed image data that needs to be transmitted is relatively large, and the sender or receiver of the image is usually an embedded device or a mobile device. The computing power of its CPU is weaker than that of ordinary PC terminals, and the communication bandwidth is usually not high. In this case, these methods are not suitable for encrypted transmission of images

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