SAMOP 2021 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 11: Quantum Communication
QI 11.3: Vortrag
Donnerstag, 23. September 2021, 15:00–15:15, H4
Anonymous Quantum Conference Key Agreement — •Frederik Hahn1, Jarn de Jong2, and Anna Pappa2 — 1Freie Universität Berlin, Berlin, Deutschland — 2Technische Universität Berlin, Berlin, Deutschland
Conference Key Agreement (CKA) is a cryptographic effort by multiple parties to create a shared secret key. In future quantum networks, generating secret keys in an anonymous manner is of enormous importance for parties who wish to keep their shared key secret while protecting their own identities. We present a CKA protocol using multipartite entangled GHZ states that is provably anonymous in realistic adversarial scenarios. The existence of secure and anonymous protocols based on multipartite entangled states provides a new insight into their potential as resources and paves the way for further applications.
DOI:https://doi.org/10.1103/PRXQuantum.1.020325