An S -Box Construction from Exponentiation in Finite Fields and Its Application in RGB Color Image Encryption

In this study, the utilization of exponentiation in finite fields is investigated for the purpose of generating pseudo-random sequences which have a crucial role in cryptographic applications. More precisely, a novel method for generating pseudo-random sequences is proposed to construct an initial S -Box which is a key component in various encryption schemes. In addition to that, a shuffling algorithm that leverages the pseudo-random sequences is developed to enhance the effectiveness of the initial S -Box. The utilization of the proposed S -Box is applied to the RGB color images to showcase its performance and robustness in an image encryption scheme.