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Title
An Efficient Encryption Technique Based on Coupled Map Lattices
Author(s)
Rabia Riaz
Abstract
This study introduces a highly secure image encryption technique based on coupled map lattices (CMLs), a class of chaotic systems known for their sensitivity to initial conditions and spatiotemporal complexity. The CMLs offer an ideal foundation for encryption due to its ability to generate unpredictable and nonlinear transformations. Although several chaos-based encryption methods have been explored in the past, many suffer from narrow parameter ranges, limited key spaces, or insufficient resistance to modern cryptographic attacks. To address these issues, we propose a novel two-parameter wide-range CMLs model that enhances key generation and improves chaotic behavior across a broader parameter space. The encryption process employs a dynamic key schedule, pixel permutation, and modular diffusion using CMLs-generated sequences. Comprehensive experimental evaluations demonstrate that the proposed method ensures high entropy, minimal pixel correlation, and strong resistance to brute-force, occlusion, noise, and differential attacks. It also outperforms existing techniques in both computational efficiency and encryption strength.
Type
Thesis/Dissertation MS
Faculty
Engineering and Computer Science
Department
Mathematics
Language
English
Publication Date
2026-01-02
Subject
Mathematics
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df005b572a.pdf
2026-01-13 14:31:35
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