A novel multi-image cryptosystem based on weighted plain images and using combined chaotic maps

Abstract

This paper introduces a new multi-image cryptosystem based on modified Henon map and nonlinear combination of chaotic seed maps. Based on the degree of correlation between the adjacent pixels of the plain image, a unique weight is assigned to the plain image. First, the coordinates of plain images are disrupted by modified Henon map as confusion phase. In the first step of diffusion phase, the pixels content of images are changed separately by XOR operation between confused images and matrices with suitable nonlinear combination of seed maps sequences. These combination of seed maps are selected depending on the weight of plain images as well as bifurcation properties of mentioned chaotic maps. After concatenating the matrices obtained from the first step of diffusion phase, the bitwise XOR operation is applied between newly developed matrix and the other produced matrix from the chaotic sequences of the Logistic-Tent-Sine hybrid system, as second step of diffusion phase. The encrypted image is obtained after applying shift and exchange operations. The results of the implementation using graphs and histograms show that the proposed scheme, compared to some existing methods, can effectively resist common attacks and can be used as a secure method for encrypting digital images.

Hyperchaotic Image Encryption System Based on Deep Learning LSTM

“…The algorithm's effectiveness in countering differential attacks improves as the measured values approach these ideal benchmarks. In this paper, a comparative analysis is conducted using the literature [28] [29], as illustrated in Table VI. The analysis demonstrates that the NPCR and UACI values in this algorithm closely approach the true values, indicating strong encryption efficacy and enhanced resistance to differential attacks.…”

Image Encryption using Double Layer Chaos with Dynamic Iteration and Rotation Pattern

“…Several methods for text encryption, such as Advanced Encryption Standard (AES), Data Encryption Standard (DES), 3-DES, and Rivest-Shamir-Adleman (RSA), have been proven to work well on text, but if applied to encryption of images or multimedia data, they are not suitable. Many researchers, such as in research [4][5][6][7][8], state that these methods make the encryption process less efficient, over-complex, and over-computing. Encryption on images is widely applied using the chaos method, which this method has many advantages in encrypting a digital image, some of which are ergodicity characters, sensitivity to more unpredictable initial values, low complexity, and strong correlation, and non-uniform distribution.…”