Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption
In this paper, we introduce a two-party quantum private comparison (QPC) protocol that employs single photons as quantum resources and utilizes rotational encryption to safeguard the privacy of the inputs. This protocol enables two parties to compare their private data without disclosing any informa...
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MDPI AG
2025-01-01
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| Online Access: | https://www.mdpi.com/2076-3417/15/2/722 |
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| author | Min Hou Yue Wu |
| author_facet | Min Hou Yue Wu |
| author_sort | Min Hou |
| collection | DOAJ |
| description | In this paper, we introduce a two-party quantum private comparison (QPC) protocol that employs single photons as quantum resources and utilizes rotational encryption to safeguard the privacy of the inputs. This protocol enables two parties to compare their private data without disclosing any information beyond the outcome of the comparison. The participants’ private data are encoded as single photons, which are encrypted using a rotational encryption method. These encrypted single photons are then transmitted to a semi-honest third party (TP), who conducts single-particle measurements to determine if the users’ private data are equal and subsequently announces the results to the participants. By harnessing the principles of quantum mechanics, we ensure robust protection against potential eavesdropping and participant attacks. In contrast to numerous existing QPC protocols that rely on multi-qubit or d-dimensional quantum states, our method exhibits superior efficiency and practicality. Specifically, our protocol achieves a qubit efficiency of 50% by using two single photons to compare one bit of classical information, and single photons are easier to prepare than multi-qubit and d-dimensional quantum states. |
| format | Article |
| id | doaj-art-55b8678f268e4f9c89a7ddadb2e9ac87 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-55b8678f268e4f9c89a7ddadb2e9ac872025-01-24T13:20:35ZengMDPI AGApplied Sciences2076-34172025-01-0115272210.3390/app15020722Two-Party Quantum Private Comparison Protocol Based on Rotational EncryptionMin Hou0Yue Wu1School of Computer Science, Sichuan University Jinjiang College, Meishan 620860, ChinaSchool of Computer Science, Sichuan University Jinjiang College, Meishan 620860, ChinaIn this paper, we introduce a two-party quantum private comparison (QPC) protocol that employs single photons as quantum resources and utilizes rotational encryption to safeguard the privacy of the inputs. This protocol enables two parties to compare their private data without disclosing any information beyond the outcome of the comparison. The participants’ private data are encoded as single photons, which are encrypted using a rotational encryption method. These encrypted single photons are then transmitted to a semi-honest third party (TP), who conducts single-particle measurements to determine if the users’ private data are equal and subsequently announces the results to the participants. By harnessing the principles of quantum mechanics, we ensure robust protection against potential eavesdropping and participant attacks. In contrast to numerous existing QPC protocols that rely on multi-qubit or d-dimensional quantum states, our method exhibits superior efficiency and practicality. Specifically, our protocol achieves a qubit efficiency of 50% by using two single photons to compare one bit of classical information, and single photons are easier to prepare than multi-qubit and d-dimensional quantum states.https://www.mdpi.com/2076-3417/15/2/722quantum cryptographyquantum private comparison (QPC)single photonssemi-honest third party (TP)rotational encryption |
| spellingShingle | Min Hou Yue Wu Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption Applied Sciences quantum cryptography quantum private comparison (QPC) single photons semi-honest third party (TP) rotational encryption |
| title | Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption |
| title_full | Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption |
| title_fullStr | Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption |
| title_full_unstemmed | Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption |
| title_short | Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption |
| title_sort | two party quantum private comparison protocol based on rotational encryption |
| topic | quantum cryptography quantum private comparison (QPC) single photons semi-honest third party (TP) rotational encryption |
| url | https://www.mdpi.com/2076-3417/15/2/722 |
| work_keys_str_mv | AT minhou twopartyquantumprivatecomparisonprotocolbasedonrotationalencryption AT yuewu twopartyquantumprivatecomparisonprotocolbasedonrotationalencryption |