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Comparing Different Diffie-Hellman Key Exchange Flavors for LDACS

Mäurer, Nils and Gräupl, Thomas and Gentsch, Christoph and Schmitt, Corinna (2020) Comparing Different Diffie-Hellman Key Exchange Flavors for LDACS. In: 39th AIAA/IEEE Digital Avionics Systems Conference, DASC 2020. IEEE. 39th Digital Avionics Systems Conference (DASC), 2020-10-11 - 2020-10-15, Virtual. doi: 10.1109/dasc50938.2020.9256746. ISBN 978-172819825-5. ISSN 2155-7195.

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Abstract

Growth of civil air traffic worldwide poses a great challenge for the supporting Communication, Navigation and Surveillance (CNS) infrastructure. Analogue systems have to be replaced by digital means to optimize spectrum efficiency and automation is becoming much more important to be able to handle the amount of participants in the air traffic system. As safety and security are strongly intertwined in aviation, cybersecurity is one key enabler for digitalization in civil aviation. As such we investigate mutual authentication and key agreement methods for the digital aeronautical ground-based communications system LDACS. Thereby, we compare the suitability of three different Diffie-Hellman key exchange flavors - Ephemeral Diffie-Hellman (DHKE), Elliptic Curve Diffie-Hellman (ECDH), Supersingular Isogeny Diffie-Hellman (SIDH) -, used in the STS protocol, for digital aeronautical communication in terms of latency and security data overhead. We conclude, the STS protocol based on a centralpublic-key infrastructure (PKI) based trust solution with SIDH for post-quantum security to be best suited for long term security. However, due to the smaller key sizes, ECDH is the more resource efficient candidate and may play a role in low resource authentication scenarios for LDACS.

Item URL in elib:https://elib.dlr.de/136814/
Document Type:Conference or Workshop Item (Speech)
Title:Comparing Different Diffie-Hellman Key Exchange Flavors for LDACS
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Mäurer, NilsUNSPECIFIEDhttps://orcid.org/0000-0003-1324-7574UNSPECIFIED
Gräupl, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-7864-774XUNSPECIFIED
Gentsch, ChristophUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmitt, CorinnaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:October 2020
Journal or Publication Title:39th AIAA/IEEE Digital Avionics Systems Conference, DASC 2020
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.1109/dasc50938.2020.9256746
Publisher:IEEE
ISSN:2155-7195
ISBN:978-172819825-5
Status:Published
Keywords:Cybersecurity, LDACS, Authenticated Key Exchange, Station-To-Station (STS)
Event Title:39th Digital Avionics Systems Conference (DASC)
Event Location:Virtual
Event Type:international Conference
Event Start Date:11 October 2020
Event End Date:15 October 2020
Organizer:AIAA, IEEE
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Communication, Navigation and Surveillance (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation
Institute of Communication and Navigation > Communications Systems
Institute of Data Science > Secure Digital Systems
Deposited By: Mäurer, Nils
Deposited On:26 Oct 2020 09:17
Last Modified:24 Apr 2024 20:39

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