Cryptanalysis and melioration of secure quantum sealed-bid auction with post-confirmation

Cryptanalysis and melioration of secure quantum sealed-bid auction with post-confirmation We investigate the quantum sealed-bid auction protocol proposed by Zhao et al. (Opt Commun 283:1394, 2010). It uses M groups n-particle GHZ states to represent bids and a post-confirmation mechanism to guarantee the honesty of the quantum sealed-bid auction. However, in our opinion the protocol still does not complete the task of a sealed-bid auction fairly. It is shown that a large group of dishonest bidders can collude to obtain all the other one’s secret bids before the opening phase of the auction with a probability polynomially close to one. Moreover, a simple feasible improvement of the protocol is proposed. Quantum Information Processing Springer Journals

Cryptanalysis and melioration of secure quantum sealed-bid auction with post-confirmation

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Springer US
Copyright © 2011 by Springer Science+Business Media, LLC
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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  • Improved secure quantum sealed-bid auction
    Yang, Y.G.; Naseri, M.; Wen, Q.Y.
  • Comment on: “Secure quantum sealed-bid auction” [Opt. Comm. 282 (2009) 1939]
    Zheng, Y.Q.; Zhao, Z.W.

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