A high-entropy image encryption scheme using optimized chaotic maps with Josephus permutation strategy Article Swipe
Nawal El Ghouate
,
Mohamed Amine Tahiri
,
Ahmed Bencherqui
,
Hanaa Mansouri
,
Ahmed El Maloufy
,
Hicham Karmouni
,
Mhamed Sayyouri
,
Sameh Askar
,
Mohamed Abouhawwash
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s41598-025-14784-5
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1038/s41598-025-14784-5
With the rapid growth in the exchange of digital data, the problem of protecting images has become essential, particularly in sectors such as medicine, surveillance and secure communications. Traditional encryption techniques, such as DES, AES and RSA, are effective for text, but often ineffective for images, due to high redundancy and high correlation between pixels. We suggest a novel image encryption algorithm based on chaotic maps and the variable-step Josephus problem to get over these restrictions and increase the encryption resilience. This algorithm uses Kepler Chaotic Optimisation Algorithm (CKOA) to select the most suitable chaotic maps, guaranteeing optimal diffusion and complex pixel confusion. Key generation is enhanced with MD5 and SHA-256 hash functions, providing increased resistance to collisions and attacks. In addition, Discrete Wavelet Transform (DWT) is integrated to compress images and reduce processing time, while maintaining a high average entropy of 7.999 for encrypted images. Experimental tests demonstrate strong resistance against cryptographic attacks, including 99.6% as pixel change rate and 33.31% as unified average change intensity, ensuring optimum security. Compared with other image-based encryption schemes, our method stands out for its speed and reduced computational complexity, while offering superior security.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1038/s41598-025-14784-5
- OA Status
- gold
- Cited By
- 2
- References
- 74
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4413108228
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4413108228Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1038/s41598-025-14784-5Digital Object Identifier
- Title
-
A high-entropy image encryption scheme using optimized chaotic maps with Josephus permutation strategyWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2025Year of publication
- Publication date
-
2025-08-11Full publication date if available
- Authors
-
Nawal El Ghouate, Mohamed Amine Tahiri, Ahmed Bencherqui, Hanaa Mansouri, Ahmed El Maloufy, Hicham Karmouni, Mhamed Sayyouri, Sameh Askar, Mohamed AbouhawwashList of authors in order
- Landing page
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https://doi.org/10.1038/s41598-025-14784-5Publisher landing page
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://doi.org/10.1038/s41598-025-14784-5Direct OA link when available
- Concepts
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Encryption, Computer science, Pixel, Probabilistic encryption, Hash function, Algorithm, Chaotic, Entropy (arrow of time), Theoretical computer science, 40-bit encryption, Cryptography, Data mining, Artificial intelligence, Computer security, Quantum mechanics, PhysicsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
2Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 2Per-year citation counts (last 5 years)
- References (count)
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74Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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