A Secret Key Spreading Protocol for Extending ETSI Quantum Key Distribution

Thomas Prévost, Bruno Martin, Olivier Alibart

2025

Abstract

This paper presents an information theoretic secure secret key transfer protocol by Quantum Key Distribution (QKD) in the case of multi-hops quantum links between the two correspondents. We aim to transmit a secret between two parties using existing quantum infrastructure in the case where half of the intermediate routers are evil. We recursively divide the secret into Shamir’s shares, which are transmitted through different routes. This protocol has been successfully verified with ProVerif, which grants the secrecy of the transmitted key. We also propose an on-the-fly route discovery algorithm, in case the network is too large for each node to know all possible routes, and provide a formal verification of this algorithm using Maude.

Paper Citation

in Harvard Style

Prévost T., Martin B. and Alibart O. (2025). A Secret Key Spreading Protocol for Extending ETSI Quantum Key Distribution. In Proceedings of the 11th International Conference on Information Systems Security and Privacy - Volume 2: ICISSP; ISBN 978-989-758-735-1, SciTePress, pages 411-418. DOI: 10.5220/0013077100003899

in Bibtex Style

@conference{icissp25,
author={Thomas Prévost and Bruno Martin and Olivier Alibart},
title={A Secret Key Spreading Protocol for Extending ETSI Quantum Key Distribution},
booktitle={Proceedings of the 11th International Conference on Information Systems Security and Privacy - Volume 2: ICISSP},
year={2025},
pages={411-418},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013077100003899},
isbn={978-989-758-735-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 11th International Conference on Information Systems Security and Privacy - Volume 2: ICISSP
TI - A Secret Key Spreading Protocol for Extending ETSI Quantum Key Distribution
SN - 978-989-758-735-1
AU - Prévost T.
AU - Martin B.
AU - Alibart O.
PY - 2025
SP - 411
EP - 418
DO - 10.5220/0013077100003899
PB - SciTePress