Long distance measurement-device-independent three-party quantum key agreement

Xiao-Qiu Cai, Zi-Fan Liu, Chun-Yan Wei and Tian-Yin Wang

Physica A: Statistical Mechanics and its Applications, 2022, vol. 607, issue C

Abstract: Key agreement is a basic cryptographic primitive, which plays an important role in private communications. In this work, we propose a measurement-device-independent three-party quantum key agreement protocol and then analyze its security, which shows that it can guarantee both the security and fairness for key agreement. Furthermore, this protocol is based on Greenberger–Horne–Zeilinger states while only Bell state measurements and single-particle state measurements are required, and therefore it is experimentally feasible with current technology. More importantly, this protocol can double the space distance between participants for quantum transmission by placing untrusted relays in the middle compared with conventional protocols.

Keywords: Quantum key agreement; Measurement-device-independent; Participant attack (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:607:y:2022:i:c:s0378437122007841

DOI: 10.1016/j.physa.2022.128226

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