Content Details | NUML Online Research Repository

Content Details

Back to Department Listing

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

Publisher

Contributor(s)

Format

Identifier

Source

Relation

Coverage

Rights