Visible to the public Multi-Mediated Semi-Quantum Key Distribution

TitleMulti-Mediated Semi-Quantum Key Distribution
Publication TypeConference Paper
Year of Publication2019
AuthorsKrawec, Walter O.
Conference Name2019 IEEE Globecom Workshops (GC Wkshps)
Date Publisheddec
ISBN Number978-1-7281-0960-2
Keywordsadversarial quantum server, arbitrary MM-SQKD protocols, Companies, cryptographic protocols, fully-quantum, Gain measurement, Human Behavior, human factors, information theoretic security, information theoretic security analysis, Metrics, multimediated semiquantum key distribution, multimediated SQKD protocol, policy-based governance, private key cryptography, Protocols, pubcrawl, public key cryptography, quantum cryptography, quantum noise, resilience, Resiliency, Scalability, security, semiquantum key distribution protocol, semiquantum users, Servers, shared secret key, Standards, telecommunication security

A semi-quantum key distribution (SQKD) protocol allows two users A and B to establish a shared secret key that is secure against an all-powerful adversary E even when one of the users (e.g., B) is semi-quantum or classical in nature while the other is fully-quantum. A mediated SQKD protocol allows two semi-quantum users to establish a key with the help of an adversarial quantum server. We introduce the concept of a multi-mediated SQKD protocol where two (or more) adversarial quantum servers are used. We construct a new protocol in this model and show how it can withstand high levels of quantum noise, though at a cost to efficiency. We perform an information theoretic security analysis and, along the way, prove a general security result applicable to arbitrary MM-SQKD protocols. Finally, a comparison is made to previous (S)QKD protocols.

Citation Keykrawec_multi-mediated_2019