تأمين الصور الرقمية باستخدام التشفير المعتمد على النظام الفوضوي وترميز الحمض النووي وإخفائها بالاعتماد على DWT-DCT-SVD
كلية التقنية الصناعية – مصراته -ليبيا, أسماء عبد الله الكريك · International Science and Technology Journal · 2025
This study proposes a novel methodology for encrypting color digital images and embedding them within a cover image to enhance secure data transmission. The first stage focuses on encrypting the secret image using an integrated set of algorithms, including a six-dimensional hyper-chaotic system for generating complex encryption keys, alongside encoding inspired by the complementary DNA base pairs to strengthen data obfuscation. In the second stage, the encrypted image is embedded into the cover image employing multiple fusion techniques such as Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT), and Singular Value Decomposition (SVD), ensuring effective and robust data hiding with high resistance to detection attacks. The encryption and embedding quality were evaluated using standard metrics including Peak Signal-to-Noise Ratio (PSNR), Mean Squared Error (MSE), and Entropy, reflecting the efficiency and security of the proposed approach. Keywords: Discrete Wavelet Transformation (DWT), Discrete Cosine Transformation (DCT), Singular Value Decomposition (SVD), 6-dimensional hyper chaotic system and DNA encoding