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Entropy
Volume 22
Issue 5
10.3390/e22050589
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Article

Cryptanalysis and Improvement of a Chaotic Map-Based Image Encryption System Using Both Plaintext Related Permutation and Diffusion

by
Cheng-Yi Lin
and
Ja-Ling Wu
*
Department of Computer Science and Information Engineering, Graduate Institute of Networking and Multimedia, National Taiwan University, Taipei 106, Taiwan
*
Author to whom correspondence should be addressed.
Entropy 2020, 22(5), 589; https://doi.org/10.3390/e22050589
Submission received: 27 April 2020 / Revised: 16 May 2020 / Accepted: 20 May 2020 / Published: 24 May 2020
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Abstract

In theory, high key and high plaintext sensitivities are a must for a cryptosystem to resist the chosen/known plaintext and the differential attacks. High plaintext sensitivity can be achieved by ensuring that each encrypted result is plaintext-dependent. In this work, we make detailed cryptanalysis on a published chaotic map-based image encryption system, where the encryption process is plaintext Image dependent. We show that some designing flaws make the published cryptosystem vulnerable to chosen-plaintext attack, and we then proposed an enhanced algorithm to overcome those flaws.
Keywords: image encryption; chaotic map; permutation; diffusion; cryptanalysis image encryption; chaotic map; permutation; diffusion; cryptanalysis

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MDPI and ACS Style

Lin, C.-Y.; Wu, J.-L. Cryptanalysis and Improvement of a Chaotic Map-Based Image Encryption System Using Both Plaintext Related Permutation and Diffusion. Entropy 2020, 22, 589. https://doi.org/10.3390/e22050589

AMA Style

Lin C-Y, Wu J-L. Cryptanalysis and Improvement of a Chaotic Map-Based Image Encryption System Using Both Plaintext Related Permutation and Diffusion. Entropy. 2020; 22(5):589. https://doi.org/10.3390/e22050589

Chicago/Turabian Style

Lin, Cheng-Yi, and Ja-Ling Wu. 2020. "Cryptanalysis and Improvement of a Chaotic Map-Based Image Encryption System Using Both Plaintext Related Permutation and Diffusion" Entropy 22, no. 5: 589. https://doi.org/10.3390/e22050589

APA Style

Lin, C.-Y., & Wu, J.-L. (2020). Cryptanalysis and Improvement of a Chaotic Map-Based Image Encryption System Using Both Plaintext Related Permutation and Diffusion. Entropy, 22(5), 589. https://doi.org/10.3390/e22050589

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