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Algebraically Enhanced 3D Chaotic Map with Hash-Based Initialization for Secure Image Encryption
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DOI：10.1007/s00224-026-10274-x.png)
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With the rapid growth of image-based communication and storage, ensuring secure image transmission has become a critical challenge. This paper presents a secure image encryption scheme based on an algebraically enhanced 3D chaotic map with hash-based initialization, addressing the growing need for robust image security in modern communication systems. The proposed method employs SHA-256 hashing to generate secure initial conditions, feeding into an algebraically deformed 3D chaotic map with improved non-linear dynamics for enhanced chaotic behavior. The encryption process implements a three-stage approach: first, chaotic x-value sequences permute pixel positions; second, Gray code transformations combined with chaotic XOR operations achieve bit-level diffusion; and finally, multi-channel diffusion establishes inter-pixel dependencies across color channels. The scheme demonstrates strong cryptographic properties, with theoretical analysis confirming its chaotic characteristics and experimental results showing superior performance (NPCR 99.6120 %, UACI 33.4649 %, entropy > 7.9993) compared to existing methods. By combining algebraic map enhancements with hash-based initialization and multi-stage diffusion, the algorithm achieves an optimal balance between security and computational efficiency, making it particularly suitable for real-time image encryption applications while resisting statistical, differential, and chosen-plaintext attacks.
Keyword:
Chaotic encryption
Image security
Hash-based cryptography
3D chaotic map
期刊
T
IF:
0.4
论文数:
44
被引数:
0
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