An Image Encryption Algorithm Using Cascade Chaotic Map and S-Box

Abstract

This paper proposed an image algorithm based on a cascaded chaotic system to improve the performance of the encryption algorithm. Firstly, this paper proposed an improved cascaded two-dimensional map 2D-Cosine-Logistic-Sine map (2D-CLSM). Cascade chaotic system offers good advantages in terms of key space, complexity and sensitivity to initial conditions. By using the control parameters and initial values associated with the plaintext, the system generates two chaotic sequences associated with the plaintext image. Then, an S-box construction method is proposed, and an encryption method is designed based on the S-box. Encryption is divided into bit-level encryption and pixel-level encryption, and a diffusion method was devised to improve security and efficiency in bit-level encryption. Performance analysis shows that the encryption algorithm has good security and is easily resistant to various attacks.

Medical image encryption algorithm based on a new five-dimensional multi-band multi-wing chaotic system and QR decomposition

“…For grayscale encrypted images, 8 is the maximum theoretical value of information entropy. The information entropy of Baboon, brain CT, chest CT, DR film, and MRI after encryption and the test values from the literature 11 , 29 – 34 are shown in Table 3 .…”

“…In 2022, Liu et al proposed the construction of a new n -dimensional conservative chaotic system by adding a feedback controller 10 . In 2022, Zheng et al proposed the construction of a new chaotic system by introducing the nonlinear function cos( x ) 11 . In 2021, Liang et al proposed the construction of a new 5D chaotic system by adding a feedback controller 14 .…”

Selective region medical image encryption algorithm based on cascade chaos and two-dimensional Joseph traversal

“…In this paper, the traditional one-dimensional chaotic maps are improved and a novel cascaded map with a large range of parameters is constructed. Based on this, a selective medical image encryption scheme based on two- 1.245 [42] 1.12 [43] 18.2 dimensional Joseph traversal is designed. First, in ROI extraction phase, significant blocks are selected based on a new gradient algorithm.…”

A novel hybrid scheme for chaotic image encryption

“…To address this, researchers have introduced S-Boxes into the algorithm's design. These measures enhance the algorithm's nonlinearity, making it significantly more resistant to cryptographic attacks [34][35][36]. These measures collectively bolster the security of chaotic cryptographic algorithms, safeguard against common attacks, and enhance the efficiency of image encryption.…”