Journal
ENTROPY
Volume 20, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/e20110867
Keywords
information security; Arnold transform; quantum image encryption; quantum Fourier transform; quantum image representation
Categories
Funding
- National Natural Science Foundation of China [61572089, 61802037]
- China Postdoctoral Science Foundation [2018m640899]
- Chongqing Special Postdoctoral Science Foundation [XmT2018032]
- Chongqing Research Program of Basic Research and Frontier Technology [cstc2017jcyjBX0008]
- Chongqing Postgraduate Education Reform Project [yjg183018]
- Chongqing University Postgraduate Education Reform Project [cquyjg18219]
- Fundamental Research Funds for the Central Universities [106112017CDJQJ188830, 106112017CDJXY180005]
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Quantum image encryption offers major advantages over its classical counterpart in terms of key space, computational complexity, and so on. A novel double quantum image encryption approach based on quantum Arnold transform (QAT) and qubit random rotation is proposed in this paper, in which QAT is used to scramble pixel positions and the gray information is changed by utilizing random qubit rotation. Actually, the independent random qubit rotation operates once, respectively, in spatial and frequency domains with the help of quantum Fourier transform (QFT). The encryption process accomplishes pixel confusion and diffusion, and finally the noise-like cipher image is obtained. Numerical simulation and theoretical analysis verify that the method is valid and it shows superior performance in security and computational complexity.
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