Quantum private comparison protocol based on entanglement swapping of $$d$$ -level Bell states

Quantum private comparison protocol based on entanglement swapping of $$d$$ -level Bell states In this paper, we propose a quantum private comparison protocol based on entanglement swapping, where two distrustful parties can compare the values of their secrets with the help of a semi-trusted third party. The protocol can determine not only whether two secrets are equal, but also the size relationship between them. The two parties can deduce the comparison result based on the keys shared between them and the announcement of the third party. Others including the third party will learn nothing about the values of the secrets, as well as the comparison result. The security of our protocol is analyzed. Furthermore, all the particles can be reused in the same protocol model theoretically. So our protocol is efficient and feasible to expand in network service, which in turn gives a solution to the left problem in Lin et al. (Quantum Inf Process, doi: 10.1007/s11128-012-0395-6 , 2012). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Quantum private comparison protocol based on entanglement swapping of $$d$$ -level Bell states

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Publisher
Springer US
Copyright
Copyright © 2013 by Springer Science+Business Media New York
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-013-0536-6
Publisher site
See Article on Publisher Site

References

  • A fair and efficient solution to the socialist millionaires problem
    Boudot, F; Schoenmakers, B; Traore, J
  • Quantum protocol for millionaire problem
    Jia, HY; Wen, QY; Song, TT; Gao, F
  • Single-photon multiparty quantum cryptographic protocols with collective detection
    Liu, B; Gao, F; Wen, QY
  • Quantum computing
    Steane, A
  • New quantum private comparison protocol using EPR pairs
    Tseng, HY; Lin, J; Hwang, T

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