Print Email Facebook Twitter PRIDE Title PRIDE: A Privacy-Preserving Decentralised Key Management System Author Kester, David (Student TU Delft) Li, T. (TU Delft Cyber Security) Erkin, Z. (TU Delft Cyber Security) Date 2022 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. Subject blockchainkey managementprivacy-preservingproofs of knowledgeertms To reference this document use: http://resolver.tudelft.nl/uuid:552e8f69-26a0-4a2f-a82c-0896127ea735 DOI https://doi.org/10.1109/WIFS55849.2022.9975379 Publisher IEEE Embargo date 2023-07-01 ISBN 979-8-3503-0968-3 Source Proceedings of the 2022 IEEE International Workshop on Information Forensics and Security (WIFS) Event 2022 IEEE International Workshop on Information Forensics and Security (WIFS), 2022-12-12 → 2022-12-16, Shanghai, China 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-care Otherwise 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. Part of collection Institutional Repository Document type conference paper Rights © 2022 David Kester, T. Li, Z. Erkin Files PDF PRIDE_A_Privacy_Preservin ... System.pdf 1.06 MB Close viewer /islandora/object/uuid:552e8f69-26a0-4a2f-a82c-0896127ea735/datastream/OBJ/view