Quantum image Gray-code and bit-plane scrambling

周日贵

Y. Liu, Xiao-shuang Cheng, Chang-wei Loh +1 more

Hong Yu Xiao, Panchi Li

Claire Levaillant

After introducing a bit-plane quantum representation for a multi-image, we present a novel way to encrypt/decrypt multiple images using a quantum computer. Our encryption scheme is based on a two-stage scrambling of the images and of the bit planes on one hand and of the pixel positions on the other hand, each time using quantum baker maps. The resulting quantum multi-image is then diffused with controlled CNOT gates using a sine chaotification of a two-dimensional Hénon map as well as Chebyshev polynomials. The decryption is processed by operating all the inverse quantum gates in the reverse order.

Shahrokh Heidari, Matin Vafaei, Monireh Houshmand +1 more

Mohamed H. Beheri, Mohammed A. Amin, Xianhua Song +1 more

In this paper, a quantum image encryption based on scrambling-diffusion (SD) approach is proposed. The position information of the quantum image is scrambled by Arnold cat map followed by Fibonacci transformation to avoid iteration problem in each technique. Then, quantum gray-code is used to encrypt the gray-level information of the scrambled quantum image. Simulations and analyses indicate that the proposed quantum encryption approach achieves better performance than previous approaches.