Browsing by Author "Chowdhury, Farhana Shirin"

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Efficient Image Encryption Using DNA Encoding Rules and Modular Arithmetic Operation
(Premier University, Chattogram, 2026-03) Chowdhury, Farhana Shirin; Dhar, Kingshuk
In today's dynamic world, we rely heavily on online communication for day-to-day communication. Confidentiality becomes essential when sending digital data, including images. One of the best ways to ensure secrecy is through picture encryption. In this context, we propose a novel technique for image encryption that combines DNA encoding rules and modular arithmetic operation. In our proposed method, the position of each pixel is first changed by applying a modular arithmetic operation to the current position of each pixel of the host image using a secret key. Then, the image is split into non-overlapping blocks following the circular shift operation. The pixel values of each pixel in each block are then modified by using logical operations to the current pixel value and DNA encoding rules. Extensive testing has been done to validate the effectiveness of this approach. It is evident from statistical and differential analysis that our suggested system offers robust defense against different kinds of attacks, such as histogram attacks, correlation-based attacks, chosen plaintext and known plain text attacks, and so on. Furthermore, our technique outperforms other well-known systems in some critical aspects, thereby demonstrating its potential to advance the field of image encryption significantly.