Image encryption scheme by combining the hyper-chaotic system with quantum coding. (January 2020)

• Record Type: Journal Article
• Authors: Luo, Yuling; Tang, Shunbin; Liu, Junxiu; Cao, Lvchen; Qiu, Senhui
• Is Part Of: Optics and lasers in engineering. Volume 124(2020)
• Publication Date: 2020-01
• Subjects: Image processing -- Quantum coding -- Bit-level -- NEQR -- Chen's hyper-chaotic system; Lasers in engineering -- Periodicals; Optical measurements -- Periodicals; Optics -- Periodicals; Lasers en ingénierie -- Périodiques; Mesures optiques -- Périodiques; Optique -- Périodiques; 621.36605
• DOI: 10.1016/j.optlaseng.2019.105836
• Languages: English
• ISSNs: 0143-8166

Abstract

Highlights: A novel image encryption scheme is proposed based on hyper-chaotic system and quantum coding. A novel enhanced quantum representation (NEQR) model is applied to image processing. The bit-level adjacent-exchange operation is designed based on NEQR model. A novel image scrambling method based on quantum location coding is proposed. Experimental results demonstrate a good security performance. Abstract: The application of quantum mechanisms in image processing has attracted wide attention. In this paper, an image encryption scheme that is based on hyper-chaos and quantum coding is proposed. First, based on a novel enhanced quantum representation (NEQR), the bit-level adjacent-exchange operation is implemented to pre-process the plain-image, which has lower computational complexity compared to conventional bit-level switching operations. Then, the processed image is diffused by the quantified sequences where the self-adapting parameters are applied to quantify the sequences that are generated by Chen's hyper-chaotic system. In addition, inspired by the quantum coding structure, a novel scrambling method that is based on quantum location coding is proposed. This method is used to further scramble the diffused image to obtain the final cipher-image. The experimental results and performance analysis demonstrate that the proposed image encryption scheme has high security performance.