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Privacy-preserving Quantum Sealed-bid Auction Based on Grover's Search Algorithm.

Run-Hua Shi1,2, Mingwu Zhang3

  • 1School of Computer Science, Hubei University of Technology, Wuhan City, 430068, China. rhshi@ncepu.edu.cn.

Scientific Reports
|May 22, 2019
PubMed
Summary
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This study introduces a novel quantum sealed-bid auction scheme, enhancing bidder privacy, especially for non-winners. The quantum approach offers improved communication efficiency compared to classical methods.

Area of Science:

  • Quantum Information Science
  • Economic Theory
  • Cryptography

Background:

  • Sealed-bid auctions are crucial in modern economics, particularly for network applications.
  • Existing sealed-bid auction schemes offer insufficient privacy protection for bidders.
  • There is a need for enhanced privacy, especially for non-winning bidders.

Purpose of the Study:

  • To propose a new privacy-preserving model for sealed-bid auctions.
  • To develop a quantum sealed-bid auction scheme with superior privacy protection.
  • To improve communication complexity in sealed-bid auctions.

Main Methods:

  • A novel privacy-preserving model for sealed-bid auctions.
  • A quantum sealed-bid auction scheme utilizing N-dimensional Hilbert space for message encoding.

Related Experiment Videos

  • Application of Grover's search algorithm to identify the highest bid.
  • Analysis of communication complexity in terms of iterations (O(lnn)).

    • Main Results:

    • The proposed quantum scheme provides stronger privacy protection for bidders, including non-winners.
    • The scheme achieves the highest bid determination through Grover's search algorithm.
    • The quantum scheme demonstrates lower communication complexity compared to classical theoretical schemes.

    Conclusions:

    • The developed quantum sealed-bid auction scheme offers enhanced privacy and efficiency.
    • This quantum approach represents a significant advancement over traditional auction mechanisms.
    • The findings have implications for secure and private electronic auctions.