An Efficient and Secure Advanced Hill Cipher based Image Encryption Scheme

Photography has become an integral part of modern life, but it also exposes users to significant privacy risks. Cyber dangers, such as data breaches, hacking, and unauthorized access to private visual data, are becoming more and more of a concern. Images, including official documents and personal photos, are often at risk of data breaches and illegal access. Serious consequences, such as identity theft, harassment, or privacy violations, could result from exposure to such data. To overcome these challenges, a robust encryption system based on the Advanced Hill Cipher algorithm is proposed in this study. The images are broken down into Red, Green, and Blue (RGB) planes using the IHS (Intensity-Hue-Saturation) transform. These planes are then encrypted separately to improve security. Using dynamic key generation and modular arithmetic, this multilayer encryption provides lightweight and efficient real-time performance while enhancing attack resistance.