Back to results
US 12,761,898 B2Granted
System for distributing update data of software for an in-vehicle device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShuhei Takahashi, Yuzo Harata
Life of this patent
Estimating the term…
Abstract
A distribution server distributes update data of software for an in-vehicle device to vehicles via a wireless communication network. The distribution server includes a processor. The processor distributes the update data encrypted with a common key to the vehicles. The processor transmits the common key encrypted by a session key method to each of the vehicles.
Claims5
A distribution server that distributes update data of software for an in-vehicle device to vehicles via a wireless communication network, the distribution server comprising a processor configured to:
- distribute the update data encrypted with a common key to the vehicles, the update data and the common key being identical for each of the vehicles for a given distribution of the update data;
- and
- transmit the common key encrypted by a session key with a session key method to each of the vehicles, the session key being a single-use key that is only used once to encrypt the common key and is different for each vehicle.
Dependencies are inferred from the claim text.