Method and apparatus are disclosed for remote keyless entry authentication. An example remote keyless entry system includes a key fob and a vehicle. The key fob generates a secured message with a plaintext space and a ciphertext space. The vehicle (i) determines whether the key fob may be authorized based on first information in the plaintext space, (ii) decrypts an encrypted value in the ciphertext space based on a predicted full counter value, and (iii) determines whether the key fob is authorized based on second information in the encrypted value.
Remote keyless entry message authentication
2018-11-27
Patent
Elektronische Ressource
Englisch
IPC: | G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr |