A Semi-Quantum Private Comparison Base on W-States

Jian Li; Zhuo Wang; Jun Yang; Chongqiang Ye; Fanting Che

doi:10.3390/e25091269

A Semi-Quantum Private Comparison Base on W-States

Entropy (Basel). 2023 Aug 29;25(9):1269. doi: 10.3390/e25091269.

Authors

Jian Li^{1

2}, Zhuo Wang³, Jun Yang¹, Chongqiang Ye³, Fanting Che³

Affiliations

¹ School of Information Engineering, Ningxia University, Yinchuan 750021, China.
² School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, China.
³ School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing 100876, China.

Abstract

Privacy comparison is an important research topic in secure multi-party computing, widely used in e-commerce, secret ballots, and other fields. However, the development of quantum computing power poses a growing potential security threat to secure multi-party algorithms based on mathematically tricky problems, and most of the proposed quantum privacy comparison schemes could be more efficient. Therefore, based on the W-state, we offer a more efficient semi-quantum privacy comparison method. The security analysis shows that the scheme can resist third-party, measurement, and entanglement attacks. Compared with the previous work, the scheme significantly improves communication efficiency and has stronger practicability.

Keywords: quantum communication; quantum cryptography; quantum private comparison.

Grants and funding

This research was funded by Key Research and Development Program of Ningxia Hui Autonomous Region, grant number “2021BEG02007” and the Open Research Fund of Key Laboratory of Cryptography of Zhejiang Province, grant number “No. ZCL21006”.