中国物理B ›› 2022, Vol. 31 ›› Issue (6): 60307-060307.doi: 10.1088/1674-1056/ac65f0

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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. 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
  • 收稿日期:2022-02-07 修回日期:2022-04-07 接受日期:2022-04-11 出版日期:2022-05-17 发布日期:2022-06-06
  • 通讯作者: Zhao Dou E-mail:dou@bupt.edu.cn
  • 基金资助:
    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).

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. 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
  • Received:2022-02-07 Revised:2022-04-07 Accepted:2022-04-11 Online:2022-05-17 Published:2022-06-06
  • Contact: Zhao Dou E-mail:dou@bupt.edu.cn
  • Supported by:
    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).

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摘要： 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.

关键词: quantum private comparison, rotational encryption, polarized single photons, efficiency

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.

Key words: quantum private comparison, rotational encryption, polarized single photons, efficiency

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd
03.67.Hk (Quantum communication) 03.67.Ac (Quantum algorithms, protocols, and simulations)