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

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...

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Published inEntropy (Basel, Switzerland) Vol. 22; no. 5; p. 589
Main Authors Lin, Cheng-Yi, Wu, Ja-Ling
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 24.05.2020
MDPI
Subjects
Algorithms
Chaos theory
chaotic map
cryptanalysis
Cryptography
diffusion
Encryption
image encryption
permutation
Permutations
Sensitivity
cryptanalysis
diffusion
image encryption
chaotic map
permutation
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Summary: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.
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ISSN:1099-4300
1099-4300
DOI:10.3390/e22050589