A Novel Chaotic Block Image Encryption Algorithm Based on Deep Convolutional Generative Adversarial Networks

Abstract

This paper proposes a novel chaotic block image encryption algorithm based on deep convolutional generative adversarial networks (DCGANs), quaternions, an improved Feistel network, and an overall scrambling and diffusion mechanism. First, a new hyperchaotic system is introduced and combined with DCGANs to generate a random sequence with better randomness and complexity as a key stream. This sequence is then combined with a quaternion and an improved Feistel network encryption of a colour plaintext image by utilizing the key block matrix to ultimately achieve overall scrambling and diffusion of the cipher image. Finally, the security of this algorithm is quantitatively and qualitatively analysed. The simulation results show that the proposed hyperchaotic system has a large key space and good random characteristics and that the new algorithm yields adequate security and can resist brute-force attacks and chosen-plaintext attacks. Therefore, this approach provides a new way to achieve secure transmission and protection of image information. INDEX TERMS Image encryption, chaotic system, deep convolutional generative adversarial networks.

Provably Secure and Fast Color Image Encryption Algorithm Based on S-Boxes and Hyperchaotic Map

“…They reflect the degree of change after adjusting a specific pixel value of the plaintext image at random and show the link between the number of changes in the encrypted image's pixel values and the change degree. Even the slightest change in the plaintext image's pixel value can substantially alter the ciphertext image, which indicates that the encryption technique has a high resistance to differential attacks [40]. Table 8 demonstrates that the use of three color images evaluated the performance of opposing various attacks, and the findings suggest that this work is highly reliant on the input original image to deal with differential attacks.…”

Chaotic Image Encryption: State-of-the-Art, Ecosystem, and Future Roadmap

“…A common use for neural networks in chaotic image encryption is to generate the key streams. This can be seen in a proposal by Han et al [175], where a Hermite chaotic network was trained from a logistic map, and in a proposal by Fang et al [251].…”