New Vigenere Method Surrounded by Two Genetic Crossovers For Color Image Encryption

In the present work, we introduce an innovative approach to encrypting color images. Our method represents a significant advancement over the conventional Vigenere cipher by employing a significantly enhanced version, achieved through the fusion of a large pseudorandom replacement matrix derived from two largely used chaotic sequences in cryptography. The process commences with the con-version of the original image into a one-dimensional vector, followed by the computation of an initialization value. This value is of utmost importance as it alters the initial pixel value, thereby initiating the encryption process with a preliminary genetic crossover. Subsequently, a Vigenere cipher circuit is utilized, complemented by a secondary genetic crossover especially customized for image ciphering, implemented to ensure the resulting vector integrity. Extensive simulations have been carried out on diverse images with varying sizes and for-mats to assess the effectiveness of our approach against established attacks. These simulations serve to highlight the robustness of our method.