期刊
INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS
卷 56, 期 6, 页码 1961-1982出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10773-017-3341-7
关键词
Image processing; Quantum image representing; Quantum image processing; Quantum image encrypting
资金
- National Natural Science Foundation of China [61170132]
- Natural Science Foundation of Heilongjiang Province of China [F2015021]
- Scientific Technology Research Project of the Education Department of Heilongjiang Province, China [12541059]
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 2(24) 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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