A Chaotic and Hyperchaotic Map based Image Encryption Protocol for High-End Colour density Images using enhanced S-box pixel permutator
Priya Kaushik, Ankit Attkan · 2021
The chaotic and hyperchaotic maps from Chaos theory which are both based on cryptographic standards are used in this article to present a novel technique based on repetitive permutations of pixel randomization. A unique picture encryption algorithm is being constructed that takes such meta-data into account and acts at the per pixel rotation level to boost the confusion matrix values, making decrypting the encrypted image extremely difficult for the attacker. With chaotic mapping schemes, an effective encryption key is created, which is a multifunctional encryption key used to jumble the pixel sequences to the point of picture encryption. The suggested protocol conducts both the encryption and decryption phases by increasing the finite fields padding of the corrupted pixels. Multiple levelled s-boxes that orient the pixels in the new encrypted image according to the minimum correlation coefficient are being used to induce pixel permutation and confusion. The experiment employed one of the most well-known photos, such as Lena, to test the quality of the encryption technique and the handling of the key generated thereafter. The outcome of the built protocol for image encryption shows promise in terms of security when compared to existing picture encryption approaches. Correlation coefficient and other parametric experiments indicate the validity of our approach. Because a larger image has more pixels, it has a greater impact on image encryption.