New flexible quantum private query protocol against rotation noise

Li, Dongmei; Yan, Lili; Xu, Shihuan; Qiu, Chi; Huang, Xi

doi:10.1007/s11128-020-02983-0

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…Since the first quantum cryptographic protocol was proposed by Bennett and Brassard [1] and its unconditional security was proved in 1984, numerous quantum cryptographic protocols have been proposed to solve various cryptographic tasks, such as quantum key distribution (QKD), [1][2][3][4] quantum key agreement (QKA), [5][6][7] quantum secret sharing (QSS), [8][9][10][11] quantum secure direct communication (QSDC), [12][13][14] and quantum private query (QPQ). [15][16][17][18] Secure multiparty computation (SMC) aims to calculate a function in a distributed network of mutual distrust without disclosing the raw content of each party's private inputs. As an important branch of SMC, the first private comparison was proposed by Yao [19] in the millionaires' problem to compare two millionaires who are richer without revealing their actual property.…”

Section: Introductionmentioning

confidence: 99%

Quantum private comparison of arbitrary single qubit states based on swap test

Huang¹,

Yan²,

Cheng³

et al. 2022

Chinese Phys. B

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In this paper, by using swap test, a quantum private comparison (QPC) protocol of arbitrary single qubit states with a semi-honest third party is proposed. The semi-honest third party (TP) is required to help two participants perform the comparison. She can record intermediate results and do some calculations in the whole process of the protocol execution, but she cannot conspire with any participants. In the process of comparison, TP cannot get two participants' private information except the comparison results. According to the security analysis, the proposed protocol can resist both outsider attacks and participant attacks. Compared with the existing QPC protocols, the proposed one does not require any entanglement swapping technology, and it can compare two participants' qubits by performing swap test, which is easier to implement with current technology. Meanwhile, the proposed protocol can compare secret integers. It encodes secret integers into the amplitude of quantum state rather than transfer them as binary representations, and the encoded quantum state is compared by performing swap test. Additionally, the proposed QPC protocol is extended to the QPC of arbitrary single qubit states by using multi-qubit swap test.

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