Quantum private comparison with a malicious third party

Sun, Zhiwei; Yu, Jianping; Wang, Ping; Xu, Lingling; Wu, Chunhui

doi:10.1007/s11128-015-0956-6

Cited by 47 publications

(22 citation statements)

References 35 publications

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“…To clarify, assume we have a secret a and an encryption key b and c = a ⊕ b . The probability of an attacker to know a is , where n is the length of the secret a 53 . In the proposed protocol, from TP 2 ’s point of view, as shown in Table 4, X 12 = X 1 ⊕ X 2 .…”

Section: Correctnessmentioning

confidence: 99%

Secure dynamic multiparty quantum private comparison

Abulkasim

Farouk

Hamad

et al. 2019

Sci Rep

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We propose a feasible and efficient dynamic multiparty quantum private comparison protocol that is fully secure against participant attacks. In the proposed scheme, two almost-dishonest third parties generate two random keys and send them to all participants. Every participant independently encrypts their private information with the encryption keys and sends it to the third parties. The third parties can analyze the equality of all or some participants’ secrets without gaining access to the secret information. New participants can dynamically join the protocol without the need for any additional conditions in the protocol. We provide detailed correctness and security analysis of the proposed protocol. Our security analysis of the proposed protocol against both inside and outside attacks proves that attackers cannot extract any secret information.

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Section: Correctnessmentioning

confidence: 99%

Secure dynamic multiparty quantum private comparison

Abulkasim

Farouk

Hamad

et al. 2019

Sci Rep

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“…Without difficulty, the semi-honest TP is the most reasonable model. Furthermore, Sun et al [57] proposed a secured QPC protocol with another adversary model where the TP is malicious, in which the TP may execute the protocol at his/her wishes for learning further information. Recently, Hung et al [58] proposed a QPC protocol with two TPs, the first TP is malicious and his role is to announce the final comparison result, while the second TP monitors the first one and detect whether the first TP announces a correct comparison result or not.…”

Section: Introductionmentioning

confidence: 99%

Improved Dynamic Multi-Party Quantum Private Comparison for Next-Generation Mobile Network

et al. 2019

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The advent of next-generation networks, such as fifth-generation cellular wireless (5G), has transformed every aspect of our lives and promised improvement for various real-life applications. Recently, Liu and Wang proposed a dynamic quantum private comparison protocol that utilizes the property of single photon, in both polarization and spatial-mode degrees of freedom. The protocol is intended to compare the private information of any two parties in n parties with the support of the other n-2 parties. However, we show that their protocol is not secure against a particular strategy of collusion attacks that leads to the problem of information leakage. Therefore, this paper suggests a security enhancement against the proposed attack strategy trying to overcome the security limitation of Liu and Wang's work. The security analysis of the suggested improvement proved that the modified protocol is secure against both the internal and external attacks, which could be used to control the various auction models for 5G services as wireless network virtualization in a secure way.INDEX TERMS Next generation mobile network, quantum private comparison protocol, single photon in both polarization and spatial-mode degrees of freedom, collusion attack.

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“…A quantum cryptographic protocol is secure if no information about the secret key is leaked; otherwise, it will be aborted. So far various subfields of quantum cryptography have emerged to offer different functions, such as quantum secure direct communication 1–9 , quantum private comparison 10–14 , quantum signature 15,16 , and quantum oblivious transfer 17 .…”

Section: Introductionmentioning

confidence: 99%

New Fair Multiparty Quantum Key Agreement Secure against Collusive Attacks

Sun

Cheng

et al. 2019

Sci Rep

Self Cite

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Fairness is an important standard needed to be considered in a secure quantum key agreement (QKA) protocol. However, it found that most of the quantum key agreement protocols in the travelling model are not fair, i.e., some of the dishonest participants can collaborate to predetermine the final key without being detected. Thus, how to construct a fair and secure key agreement protocol has obtained much attention. In this paper, a new fair multiparty QKA protocol that can resist the collusive attack is proposed. More specifically, we show that in a client-server scenario, it is possible for the clients to share a key and reveal nothing about what key has been agreed upon to the server. The server prepares quantum states for clients to encode messages to avoid the participants’ collusive attack. This construction improves on previous work, which requires either preparing multiple quantum resources by clients or two-way quantum communication. It is proven that the protocol does not reveal to any eavesdropper, including the server, what key has been agreed upon, and the dishonest participants can be prevented from collaborating to predetermine the final key.

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Quantum private comparison with a malicious third party

Cited by 47 publications

References 35 publications

Secure dynamic multiparty quantum private comparison

Secure dynamic multiparty quantum private comparison

Improved Dynamic Multi-Party Quantum Private Comparison for Next-Generation Mobile Network

New Fair Multiparty Quantum Key Agreement Secure against Collusive Attacks

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