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Quantum Cryptography Security Quantum Foundations

Comment on 'Improving the security of protocols of quantum key agreement solely using Bell states and Bell measurement'

arXiv

Authors: Jun Gu, Tzonelih Hwang

Year

2015

Paper ID

26457

Status

Preprint

Abstract Read

~2 min

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Abstract

Designing a quantum key agreement (QKA) protocol is always a challenging task, because both the security and the fairness properties have to be considered simultaneously. Recently, Zhu et al. (Quantum Inf Process 14(11): 4245-4254) pointed out that Shukla et al.'s QKA protocol (Quantum Inf Process 13(11): 2391-2405) has some security flaws (which lead to the Participant Attack). Moreover, they proposed an improvement to avoid these weaknesses. However this study points out that the improved protocol also suffers from a colluding attack, i.e., two dishonest participants in the protocol can collaborate to manipulate the final secret key without being detected.

Why This Paper Matters

This paper contributes to the Quantum Foundations research area in the Quantum Articles archive.
It adds a 2015 reference point for readers tracking recent quantum research.
Designing a quantum key agreement (QKA) protocol is always a challenging task, because both the security and the fairness properties have to be considered simultaneously.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1510.08249 [2] arXiv https://arxiv.org/abs/1510.08249 [3] Publisher https://arxiv.org/abs/1510.08249

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