This paper proposes a quantum image encryption algorithm based on n-qubit normal arbitrary superposition state (NASS) by using the basic scheme of quantum transformation and random phase transformation. According to t...
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This paper proposes a quantum image encryption algorithm based on n-qubit normal arbitrary superposition state (NASS) by using the basic scheme of quantum transformation and random phase transformation. According to theoretical analysis and experimental simulation on MATLAB system, we find that key space is an important factor of encryption and decryption algorithm. When the secret key space is large, it is difficult for the attacker to crack the encrypted information. Based on this finding, we perform 2(n) +4 times phase transformation in the encryption process. And each transformation is random, which increases the difficulty of decryption. So there are a total of 2(n) +4 randomly transformed keys. In this paper, we design the implementation circuit of random phase transformation, and because the real quantum computer is not in our grasp, now we use MATLAB software to simulate grayscale image and color imageencryptionalgorithm in classic computer, respectively. And the histogram, complexity and correlation are analyzed. Study shows that the proposed encryptionalgorithm is valid.
A novel encryptionalgorithm for quantumimages based on quantumimage XOR operations is designed. The quantumimage XOR operations are designed by using the hyper-chaotic sequences generated with the Chen’s hyper-ch...
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A novel encryptionalgorithm for quantumimages based on quantumimage XOR operations is designed. The quantumimage XOR operations are designed by using the hyper-chaotic sequences generated with the Chen’s hyper-chaotic system to control the control-NOT operation, which is used to encode gray-level information. The initial conditions of the Chen’s hyper-chaotic system are the keys, which guarantee the security of the proposed quantum image encryption algorithm. Numerical simulations and theoretical analyses demonstrate that the proposed quantum image encryption algorithm has larger key space, higher key sensitivity, stronger resistance of statistical analysis and lower computational complexity than its classical counterparts.
In order to obtain high-quality color images, it is important to keep the hue component unchanged while emphasize the intensity or saturation component. As a public color model, Hue-Saturation Intensity (HSI) model is...
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In order to obtain high-quality color images, it is important to keep the hue component unchanged while emphasize the intensity or saturation component. As a public color model, Hue-Saturation Intensity (HSI) model is commonly used in image processing. A new single channel quantum color imageencryptionalgorithm based on HSI model and quantum Fourier transform (QFT) is investigated, where the color components of the original color image are converted to HSI and the logistic map is employed to diffuse the relationship of pixels in color components. Subsequently, quantum Fourier transform is exploited to fulfill the encryption. The cipher-text is a combination of a gray image and a phase matrix. Simulations and theoretical analyses demonstrate that the proposed single channel quantum color imageencryption scheme based on the HSI model and quantum Fourier transform is secure and effective.
In the field of Internet, an image is of great significance to information transmission. Meanwhile, how to ensure and improve its security has become the focus of international research. We combine DNA codec with quan...
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In the field of Internet, an image is of great significance to information transmission. Meanwhile, how to ensure and improve its security has become the focus of international research. We combine DNA codec with quantum Arnold transform(QAr T) to propose a new double encryptionalgorithm for quantum color images to improve the security and robustness of imageencryption. First, we utilize the biological characteristics of DNA codecs to perform encoding and decoding operations on pixel color information in quantum color images, and achieve pixel-level diffusion. Second, we use QAr T to scramble the position information of quantumimages and use the operated image as the key matrix for quantum XOR operations. All quantum operations in this paper are reversible, so the decryption operation of the ciphertext image can be realized by the reverse operation of the encryption process. We conduct simulation experiments on encryption and decryption using three color images of “Monkey”, “Flower”, and “House”. The experimental results show that the peak value and correlation of the encrypted images on the histogram have good similarity, and the average normalized pixel change rate(NPCR) of RGB three-channel is 99.61%, the average uniform average change intensity(UACI) is 33.41%,and the average information entropy is about 7.9992. In addition, the robustness of the proposed algorithm is verified by the simulation of noise interference in the actual scenario.
作者：
Wu, WanQingWang, QiaoHebei Univ
Sch Cyber Secur & Comp Baoding 071002 Peoples R China Hebei Univ
Key Lab High Trusted Informat Syst Hebei Prov Baoding 071002 Peoples R China
This paper presents a quantum image encryption algorithm based on Baker map and 2D logistic map. The encrypted image is represented with NEQR model and the presented scheme adopts the strategy of selective encryption....
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This paper presents a quantum image encryption algorithm based on Baker map and 2D logistic map. The encrypted image is represented with NEQR model and the presented scheme adopts the strategy of selective encryption. Given a threshold value T, when C-YX' >= T (C-YX' < T), the proposed scheme performs U-circle plus k(U-circle plus A) on quantum state vertical bar I'>. The final ciphertext quantumimage is obtained through performing nine times quantum Baker map (QBM). The quantum circuits of encryption and decryption procedure are given. Multiple images were tested for security performance, including entropy, correlation coefficient (CC), Number of Pixel Change Rate (NPCR) and the Unified Averaged Changed Intensity (UACI). The best values of entropy, CC, NPCR and UACI are 7.9888, -0.0005, 99.58%, 33.17% respectively. Simulation results show that the proposed quantumimage scheme has good performance in the aspect of security. By comparison with other schemes, the main indicators of the proposed scheme are roughly the same.
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