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A Simple Encryption Algorithm for Quantum Color Image

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Abstract

In this paper, a simple encryption scheme for quantum color image is proposed. Firstly, a color image is transformed into a quantum superposition state by employing NEQR (novel enhanced quantum representation), where the R,G,B values of every pixel in a 24-bit RGB true color image are represented by 24 single-qubit basic states, and each value has 8 qubits. Then, these 24 qubits are respectively transformed from a basic state into a balanced superposition state by employed the controlled rotation gates. At this time, the gray-scale values of R, G, B of every pixel are in a balanced superposition of 224 multi-qubits basic states. After measuring, the whole image is an uniform white noise, which does not provide any information. Decryption is the reverse process of encryption. The experimental results on the classical computer show that the proposed encryption scheme has better security.

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Acknowledgments

We thank the anonymous reviewers for their constructive suggestions. This work was supported by the National Natural Science Foundation of China (Grant No. 61170132), the Natural Science Foundation of Heilongjiang Province of China (Grant No. F2015021), and by the Scientific Technology Research Project of the Education Department of Heilongjiang Province, China (Grant No. 12541059).

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Authors and Affiliations

  1. School of Computer & Information Technology, Northeast Petroleum University, Daqing, 163318, China

    Panchi Li & Ya Zhao

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  1. Panchi Li
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  2. Ya Zhao
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Correspondence to Panchi Li.

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Li, P., Zhao, Y. A Simple Encryption Algorithm for Quantum Color Image. Int J Theor Phys 56, 1961–1982 (2017). https://doi.org/10.1007/s10773-017-3341-7

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  • DOI: https://doi.org/10.1007/s10773-017-3341-7

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