Diagonalize three-dimensional nonlinear chaotic map to encrypt color image

In this paper, multidimensional chaos systems called a trilinear chaotic system for encryption the color image is used. Combining the multi-dimensional chaotic system with encryption algorithms improves the security. The trilinear system is built from logistic and cubic maps and generates six completely ran-dom bijections T1(x), T2(x), T2(y), T3(x), T3(y), and T3 (z). The map T1(x) randomly shuffles the image pix-els, the two maps T2 (x) and T2(y) scramble the position of the pixels, and the other three maps change the pixel values. The correlations among the three components of RGB components are reduced, and the security of the algorithm increases. The simulation results demonstrated that the procedure has very large key spaces and a high level of security.& COPY; 2023 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Computers and Artificial Intel-ligence, Cairo University. This is an open access article under the CC BY-NC-ND license (http://creative-commons.org/licenses/by-nc-nd/4.0/).