غفران خ. شريدة، حميد عبد الله يونس، طائف علاء العميدي، محمد عنبر، حسين عبد الله يونس وإزنان حسب الله
English Authors
Ghofran Kh. Shraida , Hameed A. Younis, Taief Alaa Al-Amiedy, Mohammed Anbar, Hussain A. Younis and Iznan H. Hasbullah
Abstract
Nowadays, high-resolution images pose several challenges in the
context of image encryption. The encryption of huge images’ file sizes requires
high computational resources. Traditional encryption techniques like, Data
Encryption Standard (DES), and Advanced Encryption Standard (AES) are
not only inefficient, but also less secure. Due to characteristics of chaos
theory, such as periodicity, sensitivity to initial conditions and control parameters, and unpredictability. Hence, the characteristics of deoxyribonucleic
acid (DNA), such as vast parallelism and large storage capacity, make it
a promising field. This paper presents an efficient color image encryption
method utilizing DNA encoding with two types of hyper-chaotic maps. The
proposed encryption method comprises three steps. The first step initializes
the conditions for generating Lorenz and Rossler hyper-chaotic maps using
a plain image Secure Hash Algorithm (SHA-256/384). The second step performs a confusion procedure by scrambling the three components of the image
(red, green, and blue) using Lorenz hyper-chaotic sequences. Finally, the third
step combines three approaches to encrypt the scrambled components for
diffusion: DNA encoding/decoding, addition operation between components,
and XORing with Rossler hyper-chaotic sequences. The simulation results
indicate that the suggested encryption algorithm satisfies the requirements
of security. The entropy value of confusion and diffusion is 7.997, the key
space is 2200, and the correlation coefficient is nearly zero. The efficacy of
the proposed method has been verified through numerous evaluations, and
the results show its resistance and effectiveness against several attacks, like
statistical and brute-force attacks. Finally, the devised algorithm vanquishes
other relevant color image encryption algorithms
حسين عبد الكريم يونس | hussain A.younis | 5998