An Encryption Technique to Secure Image Transmission Through Network

The modern world is being improved by a wide range of technologies. Our shared network must be secured against external threats to our data. Image conveys important information and contains a lot of data. Although there are many different cryptographic algorithms available for secure data transmission between sender and recipient, the most popular image encryption method within the cryptosystem was the chaos-based system. While image pixels are directly altered in the spatial domain, low frequency components are eliminated in the frequency domain to increase encryption speed. In this paper, we proposed a picture cryptosystem based on frequency-domain chaos that provides safe image transmission over public networks. In the frequency domain, components are dispersed and jumbled. With a large key space for the encrypted image, the suggested approach will boost security and thwart any attempts to decrypt the message. To increase the speed of encryption, the spatial process is reduced to a straightforward multiplication procedure. To achieve a high security level, we strongly peak entropy on the scrambled image using a chaotic based substitution process. At this point, every pixel value is obscured in line with the Arnold cat map and Henon map. It is clear from the security study results that unauthorized users will have a difficult time obtaining any meaningful information about the original image. A number of methods, including RGB and histogram representation, are used to demonstrate the effectiveness of the picture encryption algorithm.