Comparative Analysis of the Effects of Chaotic Systems on the Robustness of Image Encryption

In this study, we carried out a comparative analysis to examine the effects of various chaotic systems on the robustness of image encryption. To dothat, a chaotic-system-based encryption scheme was used. Different kinds of chaotic systems such as sine map, logistic map, and tent map have beenused to understand the effects of chaotic systems on encryption. In the encryption scheme, confusion and diffusion processes have been performed.Row- and column-based scrambling algorithms have been used for confusion, whereas simplified modulo-operation-based algorithm has been usedfor diffusion. In the analysis part, the correlation of two neighboring pixels and entropy are calculated to understand the effects of three different chaoticmaps. Furthermore, numerous tests such as parameter value sensitivity, initial condition sensitivity, robustness against noise, robustness against dataloss, and chi-squared test have been done to evaluate the performances of chaotic systems. All analyses in this study have been carried out in MATLABenvironment.

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