Secure Medical Data Transmission Using S-DES Encryption and Pixel Value Differencing-Based Steganography
DOI:
https://doi.org/10.65568/gujes.2026.020212الكلمات المفتاحية:
Medical Image Security, Steganography, Pixel Value Differencing, S-DES, Data Hiding, Medical CT Images, Telemedicine, Image Quality, Data Recoveryالملخص
The secure transmission of medical information requires effective protection of sensitive patient data while preserving the quality of medical images. This study proposes a hybrid data-hiding framework that combines Simplified Data Encryption Standard (S-DES) encryption with Pixel Value Differencing (PVD) steganography. Sensitive medical data are first encrypted using an 8-bit block and a 10-bit secret key, and the resulting ciphertext is then adaptively embedded into medical computed tomography (CT) images. The proposed framework was evaluated using brain, abdominal, and chest CT images with payloads ranging from 100 Bytes to 1 KB. Image quality and embedding performance were assessed using Peak Signal-to-Noise Ratio (PSNR), Mean Squared Error (MSE), Normalized Absolute Error (NAE), Average Difference (AD), and Structural Content (SC), while data-recovery reliability was evaluated using the Bit Error Rate (BER). The experimental results demonstrate high structural similarity between the original and stego images, with NAE and AD values remaining close to zero and SC values approximately equal to one. Increasing the payload resulted in the expected increase in MSE and decrease in PSNR, while maintaining limited image distortion within the investigated range. A BER of 0.00 was obtained for most recovered data, and 100% recovery was achieved under the evaluated compression condition. The results indicate that the proposed S-DES–PVD framework provides an effective combination of data confidentiality, embedding imperceptibility, and reliable data recovery for secure medical image data transmission
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الحقوق الفكرية (c) 2026 مجلة جامعة غريان للعلوم الهندسية
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