عنوان المقالة:نظام تشفير فعال للصور باستخدام الخرائط الفوضوية اللوجستية أحادية وثنائية الأبعاد An Efficient Cryptosystem for Image Using 1D and 2D Logistic Chaotic Maps
Abstract: Image is very important in multimedia technology and social media such as WhatsApp, Facebook, Viber, and Telegram, and in many fields, including military, bank accounts ,and communications. Therefore, protecting the image from hacking or theft during storage or transmission over the net is the most demanded matter nowadays. This paper proposes a new method for grayscale image encoding based on two types of logistic maps, one dimension (1D) and two-dimension (2D). First, convert a color image to grayscale and then into a binary form as a confusion step. Second, compute the initial parameters of (1D) and (2D) logistic maps using newly suggested equations. After that, permute the binary image with the new positions generated by a (2D) logistic map as a diffusion step. At the same time, a highly complicated random key is generated using a new suggested equation based on a (1D) logistic map. Then, XOR is applied between the generated key and the final image to spawn the encoded image. Finally, a median filter is applied as a post-processing step for the noisy cipher image to increase the efficiency of the proposed system when retrieving the decrypted image. The proposed method encodes images of size (1024×1024) larger than the other works. A high Mean Square Error (MSE) of 7768.40, a low peak signal to noise ratio (PSNR) of 9.22749, a high number of pixel change rate (NPCR) up to 99.63%, and a high entropy of 7.99985 are obtained. Additionally, a high speed and a high key precision 1016 are achieved. The proposed schema outperforms the other conducted works in terms of the previous evaluation measurements. The system retrieves 92% of the images with 50% salt and pepper noise and 84% of the images with 0.1 Gaussian noise, indicating higher security against noise attacks than the other works.
تاريخ النشر
31/08/2023
الناشر
International Journal of Intelligent Engineering and Systems
رقم المجلد
16
رقم العدد
4
رابط DOI
DOI: 10.22266/ijies2023.0831.11
الصفحات
125-136
الكلمات المفتاحية
Gray image, 256-bit key, Post-processing, Median filter, Noise, Iteration.
ميلا غازي عبد الحليم | Mela G. Abdul-Haleem | 3975