Efficient Quantum Private Comparison without Sharing a Key
Quantum private comparison (QPC) allows at least two users to compare the equality of their secret information, for which the security is based on the properties of quantum mechanics. To improve the use of quantum resources and the efficiency of private comparison, a new QPC protocol based on GHZ-li...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/25/11/1552 |
| _version_ | 1827639943733706752 |
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| author | Jian Li Fanting Che Zhuo Wang Anqi Fu |
| author_facet | Jian Li Fanting Che Zhuo Wang Anqi Fu |
| author_sort | Jian Li |
| collection | DOAJ |
| description | Quantum private comparison (QPC) allows at least two users to compare the equality of their secret information, for which the security is based on the properties of quantum mechanics. To improve the use of quantum resources and the efficiency of private comparison, a new QPC protocol based on GHZ-like states is proposed. The protocol adopts unitary operations to encode the secret information instead of performing quantum key distribution (QKD), which can reduce the amount of computation required to perform QKD and improve the utilization of quantum resources. The decoy photon technique used to detect channel eavesdropping ensures that the protocol is resistant to external attacks. The quantum efficiency of the protocol reaches 66%. Compared with many previous QPC schemes, the proposed protocol does not need to share a key and has advantages in quantum efficiency and quantum resources. |
| first_indexed | 2024-03-09T16:51:07Z |
| format | Article |
| id | doaj.art-b1aa1b85b8ca4ed08d85aeaefabf51fe |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-09T16:51:07Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-b1aa1b85b8ca4ed08d85aeaefabf51fe2023-11-24T14:41:06ZengMDPI AGEntropy1099-43002023-11-012511155210.3390/e25111552Efficient Quantum Private Comparison without Sharing a KeyJian Li0Fanting Che1Zhuo Wang2Anqi Fu3School of Information Engineering, Ningxia University, Yinchuan 750021, ChinaSchool of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaSchool of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, ChinaQuantum private comparison (QPC) allows at least two users to compare the equality of their secret information, for which the security is based on the properties of quantum mechanics. To improve the use of quantum resources and the efficiency of private comparison, a new QPC protocol based on GHZ-like states is proposed. The protocol adopts unitary operations to encode the secret information instead of performing quantum key distribution (QKD), which can reduce the amount of computation required to perform QKD and improve the utilization of quantum resources. The decoy photon technique used to detect channel eavesdropping ensures that the protocol is resistant to external attacks. The quantum efficiency of the protocol reaches 66%. Compared with many previous QPC schemes, the proposed protocol does not need to share a key and has advantages in quantum efficiency and quantum resources.https://www.mdpi.com/1099-4300/25/11/1552quantum private comparisonGHZ-like statesunitary operationdecoy photon |
| spellingShingle | Jian Li Fanting Che Zhuo Wang Anqi Fu Efficient Quantum Private Comparison without Sharing a Key Entropy quantum private comparison GHZ-like states unitary operation decoy photon |
| title | Efficient Quantum Private Comparison without Sharing a Key |
| title_full | Efficient Quantum Private Comparison without Sharing a Key |
| title_fullStr | Efficient Quantum Private Comparison without Sharing a Key |
| title_full_unstemmed | Efficient Quantum Private Comparison without Sharing a Key |
| title_short | Efficient Quantum Private Comparison without Sharing a Key |
| title_sort | efficient quantum private comparison without sharing a key |
| topic | quantum private comparison GHZ-like states unitary operation decoy photon |
| url | https://www.mdpi.com/1099-4300/25/11/1552 |
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