A New Protocol for Quantum Private Query Against Joint-Measurement Attack

The quantum-key-distribution (QKD)-based quantum private query (QPQ) has become a research hotspot in recent years. Although such QPQ protocols are practical, joint-measurement (JM) attack is a noteworthy threat to the security of the database. In this paper, we propose a new QPQ protocol for enhanc...

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Bibliographic Details
Published in:International journal of theoretical physics 2019-06, Vol.58 (6), p.1828-1835
Main Authors: Wang, Ying, Guo, Fen-Zhuo, Liu, Li, Huang, Wei, Wen, Qiao-Yan
Format: Article
Language:English
Subjects:
Elementary Particles
Mathematical and Computational Physics
Physics
Physics and Astronomy
Privacy
Protocol
Quantum Field Theory
Quantum Physics
Security
Theoretical
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Summary:The quantum-key-distribution (QKD)-based quantum private query (QPQ) has become a research hotspot in recent years. Although such QPQ protocols are practical, joint-measurement (JM) attack is a noteworthy threat to the security of the database. In this paper, we propose a new QPQ protocol for enhancing database security against JM attack. The special procedure “receive→measure→re-prepare→send” for the user Alice prevents her from saving states to perform JM attack. Furthermore, since each photon only travels from one party to the other, our protocol reduces the drawback of two-way communication so that the transmission distance between Alice and the database holder Bob is satisfactory. We also analyze the security of the proposed protocol in terms of the database privacy and user privacy. Moreover, our protocol preserves the excellent character of QKD-based QPQs that it is loss tolerant.
ISSN:0020-7748
1572-9575
DOI:10.1007/s10773-019-04076-w