Efficient quantum private comparison employing single photons and collective detection

Liu, Bin; Gao, Fei; Jia, Heng-Yue; Huang, Wei; Zhang, Wei-Wei; Wen, Qiaoyan

doi:10.1007/s11128-012-0439-y

Cited by 103 publications

(73 citation statements)

References 32 publications

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“…Compared with the the existing MQCP-CDs [33], [34], [35], [36], [37], [38], [39], [40], the protocols proposed in this paper have the following advantages. First, the proposed protocols are more feasible since they do not need to employ quantum storage machine.…”

Section: B Conclusionmentioning

confidence: 99%

Multi-user quantum key distribution with collective eavesdropping detection over collective-noise channels

et al. 2015

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Abstract-A multi-user quantum key distribution protocol is proposed with single particles and the collective eavesdropping detection strategy on a star network. By utilizing this protocol, any two users of the network can accomplish quantum key distribution with the help of a serving center. Due to the utilization of collective eavesdropping detection strategy, the users of the protocol just need have the ability of performing certain unitary operations. Furthermore, we present three fault-tolerant versions of the proposed protocol, which can combat with the errors over different collective-noise channels. The security of all the proposed protocols is guaranteed by the theorems on quantum operation discrimination.Index Terms-quantum cryptography, quantum key distribution, collective eavesdropping detection, collective noise.

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Section: B Conclusionmentioning

confidence: 99%

Multi-user quantum key distribution with collective eavesdropping detection over collective-noise channels

et al. 2015

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“…Hence, the advantages of our protocols are easier to be implemented and feasible with current technique, which is the same to the protocols of Refs. [34,35] On the other hand, the previous protocols are considered in the semi-honest model [22][23][24][25][26][27][28][29][30]34,35]; if TP lies in the final stages, Alice and Bob will get a wrong t is the number of running the protocol P0 in protocol P1 P0 . For consistence, we take n = t and m = 2t for Ref.…”

Section: Quantum Private Comparison With Malicious Tpmentioning

confidence: 99%

“…Refs. [19,22,27,29] show that besides the comparison result, Alice and Bob can still obtain extra amount of information on the secret inputs. From the Table 1, it can be found that our protocol does not have a distinctive advantage in terms of the QKD cost.…”

Section: Quantum Private Comparison With Malicious Tpmentioning

confidence: 99%

“…Later, Chen et al [21] proposed an efficient protocol for QPC protocol with the help of a semi-honest third party utilizing the triplet entangled state and the simple single-particle measurement. Afterward, a lot of quantum private comparison protocols based on entangled states have been proposed, such as Bell states, W states, χ -type states and d-dimensional Bell states [22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

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Quantum private comparison with a malicious third party

Sun

Wang

et al. 2015

Quantum Inf Process

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In this paper, we will show that quantum private comparison protocol is secure when a malicious third party is presented. The security of the protocol is considered in a cheat-sensitive model, in which the TP is kept honest by the possibility of being caught cheating. Besides, we enhance the privacy of the quantum private comparison protocol, where the participants' inputs and the comparison result can be preserved. Furthermore, in contrast to pervious protocols requiring a large amount of quantum resources, such as entanglement and quantum memory, our protocol is based on BB84 protocol, which is more feasible for practical applications. Finally, we analyze the security of the presented protocol.

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“…In essence, its security is guaranteed by the hash function. Since then, many other QPCE protocols have been proposed, such as the QPCE protocols with nonentangled state (i.e., single photon) [7,8], the QPCE protocols with maximally entangled state (Bell state, GHZ state, etc.) [9][10][11][12][13], and the QPCE protocols with non-maximally entangled state (W state, cluster state, χ-type state, etc.)…”

mentioning

confidence: 99%

Secure Quantum Private Comparison of Equality Based on Asymmetric W State

Liu¹,

Liu²,

Wang³

et al. 2014

Int J Theor Phys

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Recently, Liu et al. [Opt. Commun. 284, 3160, 2011] proposed a protocol for quantum private comparison of equality (QPCE) based on symmetric W state. However, Li et al. [Eur. Phys. J. D. 66, 110, 2012] pointed out that there is a flaw of information leak, and they proposed a new protocol based on EPR pairs. While examining these two protocols, we find that there exists a same flaw: the third party (TP) can know the comparison result. In this paper, through introducing and constructing a special class of asymmetric W state, a secure QPCE protocol based on this asymmetric W state is presented. Analysis shows the present protocol can not only effectively avoid the information leak found by Li et al, but also ensure TP would not get any information about the comparison result.

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Efficient quantum private comparison employing single photons and collective detection

Cited by 103 publications

References 32 publications

Multi-user quantum key distribution with collective eavesdropping detection over collective-noise channels

Multi-user quantum key distribution with collective eavesdropping detection over collective-noise channels

Quantum private comparison with a malicious third party

Secure Quantum Private Comparison of Equality Based on Asymmetric W State

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