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Efficient quantum private comparison protocol utilizing single photons and rotational encryption |
Tian-Yi Kou(寇天翊)1, Bi-Chen Che(车碧琛)1, Zhao Dou(窦钊)1,†, Xiu-Bo Chen(陈秀波)1, Yu-Ping Lai(赖裕平)2, and Jian Li(李剑)2 |
1 Information Security Center, State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2 Information Security Center, School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract As a branch of quantum secure multiparty computation, quantum private comparison is applied frequently in many fields, such as secret elections, private voting, and identification. A quantum private comparison protocol with higher efficiency and easier implementation is proposed in this paper. The private secrets are encoded as single polarized photons and then encrypted with a homomorphic rotational encryption method. Relying on this method and the circular transmission mode, we implement the multiplexing of photons, raising the efficiency of our protocol to 100%. Our protocol is easy to realize since only single photons, unitary operation, and single-particle measurement are introduced. Meanwhile, the analysis shows that our protocol is also correct and secure.
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Received: 07 February 2022
Revised: 07 April 2022
Accepted manuscript online: 11 April 2022
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PACS:
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03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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03.67.Ac
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(Quantum algorithms, protocols, and simulations)
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Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2020YFB1805405), the 111 Project (Grant No. B21049), the Foundation of Guizhou Provincial Key Laboratory of Public Big Data (Grant No. 2019BDKFJJ014), and the Fundamental Research Funds for the Central Universities (Grant No. 2020RC38). |
Corresponding Authors:
Zhao Dou
E-mail: dou@bupt.edu.cn
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Cite this article:
Tian-Yi Kou(寇天翊), Bi-Chen Che(车碧琛), Zhao Dou(窦钊), Xiu-Bo Chen(陈秀波), Yu-Ping Lai(赖裕平), and Jian Li(李剑) Efficient quantum private comparison protocol utilizing single photons and rotational encryption 2022 Chin. Phys. B 31 060307
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