Paper Info
Title
Multi-party quantum privacy comparison of size based on -level GHZ states.
Abstract
Quantum privacy comparison (QPC) plays an important role in secret ballot elections, private auctions and so on. To date, many multi-party QPC (MQPC) protocols have been proposed to compare the equality of $$k(k\ge 3)$$ participants. However, few examples of MQPC can be used to compare the sizes or values of their privacies. In this paper, we propose a MQPC protocol by which any $$k(k\ge 3)$$ participants can compare the sizes of their privacies with executing the protocol just once. The proposed MQPC protocol takes the d-level GHZ states as quantum resources, and a semi-honest TP is introduced to help the participants to determine the relationship of their privacies. Furthermore, only single-particle unitary transformations and measurements are involved, and the participants need not to share a private key beforehand which makes the proposed protocol much more efficient. Analysis shows that our protocol is secure against internal and external attack in theory.
Year
DOI
Venue
2019
10.1007/s11128-019-2401-8
Quantum Information Processing
Keywords
DocType
Volume
Quantum cryptography, Multi-party quantum privacy comparison (MQPC), Quantum Fourier transform (QFT), Third party (TP), GHZ state
Journal
18
Issue
ISSN
Citations 
9
1570-0755
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Hao Cao101.01
Wen-Ping Ma250352.88
Liangdong Lu3212.46
YeFeng He421.06
Ge Liu501.35