A system and method for a secure key exchange between two trains operating within a track network may include generating a first or second public key based on a secret random number, generating a shared secret key based on the first or second public key, authenticating one or more key exchange communications by a remote server based on a digital signature established with an on-board key associated with the first train, authenticating a communication by a remote server based on the digital signature of the second train signed with an on-board key associated with the second train, and establishing secure train-to-train communication between the two trains by generating a shared secret key based on a public key received from the other train, the secure key exchange protecting the two trains from a man-in-the-middle attack.
SECURE LOCOMOTIVE TO LOCOMOTIVE PTC COMMUNICATION
COMMUNICATION SECURISEE DE COMMANDE INTEGRALE DES TRAINS D`UNE LOCOMOTIVE A UNE AUTRE
14.06.2020
Patent
Elektronische Ressource
Englisch
Locomotive unit, freight locomotive and freight locomotive management method
Europäisches Patentamt | 2021
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