A Visually Meaningful Double-Image Encryption Scheme Using 2D Compressive Sensing and Multi-Rule DNA Encoding

Dongming Huo,Yueyou Qiu,Chao Han,Lisheng Wei, Yao Hong,Zhilong Zhu,Xin Zhou

COMPLEX & INTELLIGENT SYSTEMS（2023）

Anhui Polytechnic University | Sichuan University

Cited 4|Views16

Abstract

A visually meaningful double-image encryption scheme using 2D compressive sensing and multi-rule DNA encoding is presented. First, scrambling, diffusing and 2D compressive sensing are performed on the two plain images, and two privacy images are obtained, respectively. Then, the two privacy images are re-encrypted using DNA encoding theory to obtain two secret images. Finally, integer wavelet transform (IWT) is performed on the carrier image to obtain the wavelet coefficients, then the two secret images are embedded into the wavelet coefficients and 2k correction is performed, and the obtained result is processed by inverse IWT to obtain a visually meaningful encrypted image. DNA encoding rules selected for the pixel values of different positions in the two privacy images, and DNA operations performed between the two privacy images and the key streams at different positions are controlled by the chaotic system. The application of 2D compressive sensing reduces the amount of data, thus increasing the encryption capacity of the system. The introduction of DNA encoding theory and the double-image embedding process increases the security of the system. The simulation results demonstrate the feasibility of the scheme, and it has high data security and visual security.

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Key words

Image encryption,Compressive sensing,DNA encoding,Visually meaningful encrypted image

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