Enhancing the Security of Digital Image Encryption using Diagonalize Multidimensional Nonlinear Chaotic System

Abstract

This paper describes a new efficient cryptosystem for the color image encryption technique, based on a combination of multidimensional proposed chaos systems. This chaos system consists of six bisections: 𝑻 𝟏 (𝒙), 𝑻 𝟐 (𝒙), 𝑻 𝟐 (𝒚), 𝑻 𝟑 (𝒙), 𝑻 𝟑 (𝒚), and 𝑻 𝟑 (𝒛) . They induce three chaotic matrix keys and three chaotic vector keys. We use a multidimensional chaotic system together with an encryption algorithm to provide better security and wide key spaces. The proposed cryptosystem uses four levels of random pixel diffusions and permutations simultaneously and 𝝎 -times interchange between rows and columns. The correlations between the RGB components of the plain image are reduced. The level of security, the computational complexity, the quality of decoding a decrypted image under closure threat is improved. The simulation results showed that the algorithm shows a high level of security, and the assurance that the image recovered at the receiving point is identified as the image at the transmission point.

Manipulating Pixels in Computer Graphics by Converting Raster Elements to Vector Shapes as a Function of Hue

“…In the field of security graphics, various methods are used to protect the originality of the image. There are various techniques to secure digital images such as encryption, steganography, and watermarking [ 27 , 28 , 29 ]. Using fractal geometry, Hilbert curve-based image protection software has been developed in Postscript programming language [ 30 ].…”

Design of Higher-Dimensional Hyperchaotic System based on Combined Control and its Encryption Application

“…In [24], the theoretical security of a medical privacy protection scheme based on DNA encoding and chaotic maps is reanalyzed, and the scheme is rigorously proven to be insecure against the chosen-plaintext attack. Based on a combination of multidimensional chaotic systems, an cryptosystem for the color image encryption is described in [25], and the level of security and the computational complexity is improved. By using higher-dimensional chaotic maps and some conventional cryptographic techniques, a class of chaotic cryptosystems is designed to enhance the security of cryptosystems [26].…”