Two-Party Quantum Private Comparison Protocol Based on Rotational Encryption

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(2), P. 722 - 722

Published: Jan. 13, 2025

In this paper, we introduce a two-party quantum private comparison (QPC) protocol that employs single photons as resources and utilizes rotational encryption to safeguard the privacy of inputs. This enables two parties compare their data without disclosing any information beyond outcome comparison. The participants’ are encoded photons, which encrypted using method. These then transmitted semi-honest third party (TP), who conducts single-particle measurements determine if users’ equal subsequently announces results participants. By harnessing principles mechanics, ensure robust protection against potential eavesdropping participant attacks. contrast numerous existing QPC protocols rely on multi-qubit or d-dimensional states, our method exhibits superior efficiency practicality. Specifically, achieves qubit 50% by one bit classical information, easier prepare than states.

Language: Английский

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Quantum Private Comparison Protocol with Cluster States

Axioms, Journal Year: 2025, Volume and Issue: 14(1), P. 70 - 70

Published: Jan. 19, 2025

In this paper, we introduce a quantum private comparison (QPC) protocol designed for two players to securely and privately assess the equality of their information. The utilizes four-particle cluster states prepared by semi-honest third party (TP), who strictly adheres without deviation or collusion with any participant. TP facilitates enabling users encode information through bit-flip phase-shift operators applied received sequences. Once is encoded, sequences are returned TP, can derive results accessing details This design ensures correctness, privacy, fairness throughout process. QPC robust against both external threats participant attacks due incorporation decoy-state method key distribution techniques. Additionally, employs unitary operations Bell-basis measurements, enhancing its technical feasibility practical implementation. Notably, proposed achieves qubit efficiency up 50%. efficiency, combined strong security features, establishes as promising solution comparisons within realm cryptography.

Language: Английский

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Quantum Private Set Intersection Scheme Based on Bell States

Axioms, Journal Year: 2025, Volume and Issue: 14(2), P. 120 - 120

Published: Feb. 7, 2025

In this paper, we introduce a quantum private set intersection (QPSI) scheme that leverages Bell states as information carriers. Our approach involves encoding sets into using unitary operations, enabling the computation of between two from different users while keeping their individual undisclosed to anyone except for result. our scheme, semi-honest third party (TP) distributes first and second qubits users. Each user encodes by applying operations on received according predefined rules. The modified sequence is encrypted then sent back TP, who can compute without learning any about users’ inputs. simulation outcomes IBM platform substantiate viability scheme. We analyze security privacy aspects sets, showing both external attacks internal threats do not compromise Furthermore, exhibits better practicality utilizing easily implementable rather than relying multiple encoded calculations.

Language: Английский

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New Quantum Private Comparison Using Bell States

Entropy, Journal Year: 2024, Volume and Issue: 26(8), P. 682 - 682

Published: Aug. 13, 2024

Quantum private comparison (QPC) represents a cryptographic approach that enables two parties to determine whether their confidential data are equivalent, without disclosing the actual values. Most existing QPC protocols utilizing single photons or Bell states considered highly feasible, but they suffer from inefficiency. To address this issue, we present novel protocol capitalizes on entanglement property of and local operations meet requirements efficiency. In proposed protocol, participants with inputs perform shared received semi-honest third party (STP). Afterward, modified qubits returned STP, who can then equality relay results participants. A simulation IBM Cloud Platform confirmed feasibility our security analysis further demonstrated STP both were unable learn anything about individual inputs. other protocols, solution offers superior performance in terms

Language: Английский

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Efficient Quantum Private Comparison with Unitary Operations

Mathematics, Journal Year: 2024, Volume and Issue: 12(22), P. 3541 - 3541

Published: Nov. 13, 2024

Quantum private comparison (QPC) is a crucial component of quantum multiparty computing (QMPC), allowing parties to compare their inputs while ensuring that no sensitive information disclosed. Many existing QPC protocols utilize Bell states encounter efficiency challenges. In this paper, we present novel and efficient protocol capitalizes on the distinct characteristics enable secure comparisons. Our method transforms into unitary operations shared states, which are then returned third party obtain results. This approach enhances decreases reliance complex resources. A single state can two classical bits, achieving qubit 100%. We illustrate feasibility through simulation IBM Cloud Platform. The security analysis confirms our resistant both eavesdropping attacks from participants.

Language: Английский

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Multiparty Quantum Private Comparison Using Rotation Operations

Axioms, Journal Year: 2025, Volume and Issue: 14(4), P. 274 - 274

Published: April 3, 2025

This paper presents a multiparty quantum private comparison (MQPC) protocol that facilitates multiple users to compare the equality of their inputs while preserving confidentiality each input through principles mechanics. In our approach, initially convert secret integers into binary representations, which are then encoded single photons act as carriers information. These single-photon states undergo encryption via rotational operations, effectively obscuring original before transmission semi-honest third party (TP). The TP decrypts and conducts Z-basis measurements derive results. To enhance security, incorporates decoy photons, enabling participants detect potential eavesdropping on channel. Importantly, even if or other attempt glean insights other’s inputs, operations ensures information remains inaccessible. demonstrates significant advancements in practicality compared existing MQPC frameworks rely complex technologies, such entanglement swapping multi-particle entanglement. By leveraging simplicity rotation measurements, is more accessible for implementation.

Language: Английский

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Quantum Private Comparison Based on Four-Particle Cluster State

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(22), P. 10759 - 10759

Published: Nov. 20, 2024

A quantum private comparison (QPC) protocol enables two parties to securely compare their data without disclosing the actual values one another, utilizing mechanics maintain confidentiality. Many current QPC protocols mainly concentrate on comparing equality of information between users during a single execution, which restricts scalability. To overcome this limitation, we present an efficient aimed at evaluating groups in execution. This is achieved by leveraging entanglement correlations each particle four-particle cluster state. In our approach, encode using bit flip or phase shift operators sequence they receive, then sent back semi-trusted party determines whether secrets are equal and communicates results users. By employing method facilitating distributed transmission sequence, achieves qubit efficiency 50%. Security analyses reveal that neither external attacks nor insider threats can successfully compromise confidentiality data.

Language: Английский

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