Abstract
There is an increase in interest and necessity for an interoperable and efficient railway network across Europe, creating a key distribution problem between train and trackside entities’ key management centres (KMC). Train and trackside entities establish a secure session using symmetric keys (KMAC) loaded beforehand by their respective KMC using procedures that are not scalable and prone to operational mistakes. A single system would simplify the KMAC distribution between KMCs; nevertheless, it is difficult to place the responsibility for such a system for the whole European area within one central organization. A single system could also expose relationships between KMCs, revealing information, such as plans to use an alternative route or serve a new region, jeopardizing competitive advantage. This paper proposes a scalable and decentralised key management system that allows KMC to share cryptographic keys using transactions while keeping relationships anonymous. Using non-interactive proofs of knowledge and assigning each entity a private and public key, private key owners can issue valid transactions while all system actors can validate them. Our performance analysis shows that the proposed system is scalable when a proof of concept is implemented with settings close to the expected railway landscape in 2030.
Original language | English |
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Title of host publication | Proceedings of the 2022 IEEE International Workshop on Information Forensics and Security (WIFS) |
Publisher | IEEE |
Pages | 1-6 |
Number of pages | 6 |
ISBN (Electronic) | 979-8-3503-0967-6 |
ISBN (Print) | 979-8-3503-0968-3 |
DOIs | |
Publication status | Published - 2022 |
Event | 2022 IEEE International Workshop on Information Forensics and Security (WIFS) - Shanghai, China Duration: 12 Dec 2022 → 16 Dec 2022 |
Workshop
Workshop | 2022 IEEE International Workshop on Information Forensics and Security (WIFS) |
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Country/Territory | China |
City | Shanghai |
Period | 12/12/22 → 16/12/22 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- blockchain
- key management
- privacy-preserving
- proofs of knowledge
- ertms