Abstract
Significant advancements in networking and the exponential growth in digital multimedia exchange calls for developing new, efficient multimedia encryption algorithms as an important tool to protect the data during transmission over open networks. Recently, chaos-based ciphers have proven to be more effective for image encryption. In this paper, we propose a chaos-based image cryptosystem in the spatial domain involving confusion and diffusion processes, providing secure transmission for images through networks. We present a shuffling method, which changes each pixel position in the plain image based on the quadratic chaotic map and applies cyclic shifts locally and globally. To achieve a high security level, we apply a chaotic based substitution step on the scrambled image, strongly peaking entropy. This step involves obfuscating each pixel value according to the quadratic map key. It is apparent from the obtained results in our security analysis that it is difficult for unauthorized users to gain any useful information about the original image.
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Elkamchouchi, H., Anton, R. & Abouelseoud, Y. New Encryption Algorithm for Secure Image Transmission Through Open Network. Wireless Pers Commun 125, 45–62 (2022). https://doi.org/10.1007/s11277-022-09540-1
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DOI: https://doi.org/10.1007/s11277-022-09540-1