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Improved secure quantum sealed-bid auction |
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| Authors: | Yu-Guang Yang Mosayeb Naseri Qiao-Yan Wen |
| Affiliation: | a College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, People’s Republic of China b Islamic Azad University, Kermanshah Branch, Kermanshah, Iran c State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing 100876, People’s Republic of China d National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, People’s Republic of China e State Key Laboratory of Integrated Services Network, Xidian University, Xi’an 710071, People’s Republic of China |
| Abstract: | The security of a secure quantum sealed-bid auction protocol using quantum secure direct communication based on GHZ states [M. Naseri, Opt. Commun. 282 (2009) 1939] is reexamined. It is shown that the protocol does not complete the task of a sealed-bid auction fairly. It is shown that a dishonest bidder can obtain all the other one’s secret bids by two special types of attack, i.e., double Controlled NOT attack or using fake entangled particles. Furthermore, a simple possible improvement of the protocol is proposed. |
| Keywords: | Quantum communication GHZ state Quantum Sealed-bid auction |
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