Quantum Conference Key Agreement: A Review

Conference key agreement (CKA), or multipartite key distribution, is a cryptographic task where more than two parties wish to establish a common secret key. A composition of bipartite quantum key distribution protocols can accomplish this task. However, the existence of multipartite quantum correlat...

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Bibliographic Details
Published inAdvanced quantum technologies (Online) Vol. 3; no. 11
Main Authors Murta, Gláucia, Grasselli, Federico, Kampermann, Hermann, Bruß, Dagmar
Format Journal Article
LanguageEnglish
Published 01.11.2020
Subjects
conference key agreement
device‐independent protocols
multipartite entanglement
multipartite QKD
quantum cryptography
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Summary:Conference key agreement (CKA), or multipartite key distribution, is a cryptographic task where more than two parties wish to establish a common secret key. A composition of bipartite quantum key distribution protocols can accomplish this task. However, the existence of multipartite quantum correlations allows for new and potentially more efficient protocols, to be applied in future quantum networks. Here, the existing quantum CKA protocols based on multipartite entanglement are reviewed, both in the device‐dependent and the device‐independent scenario. Conference key agreement (CKA) is a cryptographic task where more than two parties wish to establish a common secret key. This can be accomplished by a composition of bipartite quantum key distribution protocols. However, the existence of multipartite quantum correlations allows for new and potentially more efficient protocols. Here, the existing quantum CKA protocols based on multipartite entanglement are reviewed.
ISSN:2511-9044
2511-9044
DOI:10.1002/qute.202000025