Comment on “efficient and feasible quantum private comparison of equality against the collective amplitude damping noise”

Comment on “efficient and feasible quantum private comparison of equality against the... In this paper, protocols of quantum private comparison of equality (QPCE) are investigated. We study the security of previous QPCE protocols with a semi-honest third party (TP) from the viewpoint of secure multiparty computation and show that QPCE protocol (Chen et al. Quantum Inf Process 2012) has an obvious security flaw. A vicious inside attacker impersonating TP or the compromised TP colluding with a dishonest inside player can steal other player’s secret successfully. An improved efficient and feasible QPCE protocol is proposed. In our improved scheme, only the two players can deduce the results of comparisons based on their shared key, and others will learn no information of the comparison results, even the length of secrets. The cost of communication is also be optimized. Our scheme can resist various kinds of attacks from both the outside eavesdroppers and the inside players, even the TP. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Comment on “efficient and feasible quantum private comparison of equality against the collective amplitude damping noise”

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Publisher
Springer Journals
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/s11128-013-0674-x
Publisher site
See Article on Publisher Site

Abstract

In this paper, protocols of quantum private comparison of equality (QPCE) are investigated. We study the security of previous QPCE protocols with a semi-honest third party (TP) from the viewpoint of secure multiparty computation and show that QPCE protocol (Chen et al. Quantum Inf Process 2012) has an obvious security flaw. A vicious inside attacker impersonating TP or the compromised TP colluding with a dishonest inside player can steal other player’s secret successfully. An improved efficient and feasible QPCE protocol is proposed. In our improved scheme, only the two players can deduce the results of comparisons based on their shared key, and others will learn no information of the comparison results, even the length of secrets. The cost of communication is also be optimized. Our scheme can resist various kinds of attacks from both the outside eavesdroppers and the inside players, even the TP.

Journal

Quantum Information ProcessingSpringer Journals

Published: Nov 9, 2013

References

  • Comparing information without leaking it
    Fagin, R; Naor, M; Winkler, P
  • New quantum private comparison protocol using EPR pairs
    Tseng, H-Y; Lin, J; Hwang, T
  • Quantum protocol for millionaire problem
    Jia, HY; Wen, QY; Song, TT; Gao, F
  • Secure authentication of classical messages with decoherence-free states
    Wang, TY; Wen, QY; Zhu, FC

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