Charge control device, storage medium, and charge control method
AssigneeDENSO TEN Limited
InventorYoshinori Nagaoka
Life of this patent
Estimating the term…
Abstract
A charge control device for a vehicle includes: a controller configured to communicate with a charging facility for a charge authentication, the controller storing a first private key corresponding to a first certificate in a first area of a memory, wherein the controller is configured to: generate a second private key and a public key in response to a request from a certificate issuer; store the second private key in a second area of the memory different from the first area; transmit the public key to the certificate issuer to receive a second certificate issued by the certificate issuer; maintain use of the first private key until an installation completion of the second certificate; and use the second private key upon the installation completion.
Claims10
A charge control device for a vehicle, the device comprising:
- a controller capable of communicating with a charging facility for charging an electric power to the vehicle, wherein the controller is configured to:
- store a current private key and a current certificate;
- create a signature based on the current private key and the current certificate;
- transmit the signature to the charging facility for an authentication to initiate charging the electric power;
- generate and store a new private key and a new public key in response to a request from a certificate issuer;
- transmit the new public key to the certificate issuer;
- receive and store a new certificate issued by the certificate issuer;
- check whether the vehicle is connected to the charging facility;
- maintain use of the current private key for creating the signature and withhold use of the new private key if the vehicle is connected to the charging facility;
- and
- replace the current private key and the current certificate with the new private key and the new certificate if the vehicle is not connected to the charging facility.
A non-transitory computer-readable storage medium storing a program that causes a controller to perform a process, the controller being capable of communicating with a charging facility for charging an electric power to a vehicle, the process comprising:
- storing a current private key and a current certificate;
- creating a signature based on the current private key and the current certificate;
- transmitting the signature to the charging facility for an authentication to initiate charging the electric power;
- generating and storing a new private key and a new public key in response to a request from a certificate issuer;
- transmitting the new public key to the certificate issuer;
- receiving and storing a new certificate issued by the certificate issuer;
- checking whether the vehicle is connected to the charging facility;
- maintaining use of the current private key for creating the signature and withholding use of the new private key if the vehicle is connected to the charging facility;
- and
- replacing the current private key and the current certificate with the new private key and the new certificate if the vehicle is not connected to the charging facility.
A charge control method for a controller capable of communicating with a charging facility for charging an electric power to a vehicle, the charge control method comprising:
- storing a current private key and a current certificate;
- creating a signature based on the current private key and the current certificate;
- transmitting the signature to the charging facility for an authentication to initiate charging the electric power;
- generating and storing a new private key and a new public key in response to a request from a certificate issuer;
- transmitting the new public key to the certificate issuer;
- receiving and storing a new certificate issued by the certificate issuer;
- checking whether the vehicle is connected to the charging facility;
- maintaining use of the current private key for creating the signature and withholding use of the new private key if the vehicle is connected to the charging facility;
- and
- replacing the current private key and the current certificate with the new private key and the new certificate if the vehicle is not connected to the charging facility.
Dependencies are inferred from the claim text.