In modern chaotic image cryptosystems, the initial values generated for the chaotic system are carried out based on the hash function or summation result of the image pixels. Also, the confusion-diffusion structure is often typically split into two different components. However, it decreases the cryptosystem security because the independent structure can be cryptanalysis separately. A practical chaotic image cryptosystem based on plaintext-associated mechanism and integrated confusion-diffusion operation has been developed in this research paper to enhance the encryption reliability. The initial values of the four-dimensional chaotic system are updated by using the pixel values and locations to increase the sensitivity of plaintext images. Besides, the confusion and diffusion operations are correlated and intertwined with each other, where the proposed scheme applies a simultaneous confusion-diffusion process and rows-columns scrambling process. The simulation and experimental analysis demonstrate that the proposed cryptosystem is protected from possible attacks. Moreover, it provides a high performance compared to several other chaotic-based image cryptosystems.
Shibeeb, Ahmed Kareem; Ahmed, Mohammed Hussein; and Mohammed, Ahmed Hashim
"A new chaotic image cryptosystem based on plaintext-associated mechanism and integrated confusion-diffusion operation,"
Karbala International Journal of Modern Science: Vol. 7
, Article 2.
Available at: https://doi.org/10.33640/2405-609X.3117
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