Deniable Public-Key Authenticated Quantum Key Exchange

van Wier, Jeroen; Atashpendar, Arash; Roenne, Peter

Reference : Deniable Public-Key Authenticated Quantum Key Exchange


	Document type :	E-prints/Working papers : First made available on ORBilu
	Discipline(s) :	Engineering, computing & technology : Computer science
	Focus Areas :	Security, Reliability and Trust
	To cite this reference:	http://hdl.handle.net/10993/51736

Title :	Deniable Public-Key Authenticated Quantum Key Exchange
Language :	English
Author, co-author :	van Wier, Jeroen [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > APSIA >]
	Atashpendar, Arash [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Roenne, Peter [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > APSIA >]
Publication date :	Undated
Number of pages :	16
Peer reviewed :	No
Keywords :	[en] Public-key Cryptography ; Deniability ; Quantum Key Distribution
Abstract :	[en] In this work, we explore the notion of deniability in public-key authenticated quantum key exchange (QKE), which allows two parties to establish a shared secret key without leaving any evidence that would bind a session to either party. The deniability property is expressed in terms of being able to simulate the transcripts of a protocol. The ability to deny a message or an action has applications ranging from secure messaging to secure e-voting and whistle-blowing. While quite well-established in classical cryptography, it remains largely unexplored in the quantum setting. Here, we first present a natural extension of classical definitions in the simulation paradigm to the setting of quantum computation and formalize the requirements for a deniable QKE scheme. We then prove that the BB84 variant of QKE, when authenticated using a strong designated verifier signature scheme, satisfies deniability and, finally, propose a concrete instantiation.
Target :	Researchers
Permalink :	http://hdl.handle.net/10993/51736
FnR project :	FnR ; FNR11689058 > Peter Y. A. Ryan > Q-CoDe > Quantum Communication With Deniability > 01/07/2018 > 30/06/2021 > 2017

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Open access	deniable_qke_in_the_simulation_paradigm_orbilu.pdf		Author preprint	438.89 kB	View/Open

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