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SIGNAL+DRAHT | Ausgabe 05/2024

Post-quantum cryptography and a long period of use – no objections thanks to crypto agility

Mai 2024 | Gunnar Preissler, Andreas Hinterschweiger, Klaus Schmeh

The control and safety components used in railway systems have often been in operation for decades and will have to use up-to-date cryptographic methods in the future. Since currently widespread crypto algorithms such as RSA or Diffie-Hellman could be broken with a quantum computer at some point, it must be possible to switch to post-quantum methods if necessary. Innovative approaches are therefore being sought. This article presents a sustainable concept based on crypto-agile solutions.

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