Abstract: A vehicle-mounted device is configured to identify another vehicle from an image generated by photographing the surroundings of a host vehicle using a photographing device. The vehicle-mounted device is configured to detect identification information of the another vehicle on the basis of a signal received via inter-vehicle communication with a vehicle-mounted device of the another vehicle located in a communication range of the inter-vehicle communication. The vehicle-mounted device is configured to determine whether the identification information corresponding to the another vehicle identified from an image has been acquired.

Abstract: The integrated circuit includes a CPU configured to operate according to a program, a PUF information output unit configured to output PUF information while power is being supplied, a key pair output unit configured to output a public key and a private key based on the PUF information while power is being supplied, a public key transmitter configured to transmit the public key output from the key pair output unit to the outside, and a shared encryption key decryption unit configured to decrypt encrypted information produced through encryption with the public key and received from the outside with the private key output from the key pair output unit.

Abstract: An information distribution device configured to distribute an encrypted update program to a control device connected through a wide-area communication network includes: a physically unclonable function (PUF) information acquiring unit configured to acquire PUF information of the control device recorded in advance; an additional information acquiring unit configured to specify and acquire any of a plurality of pieces of additional information recorded in advance; an encryption processing unit configured to encrypt protection target information based on the PUF information and the additional information that are acquired; and a transmission processing unit configured to transmit the encrypted update program to the control device, wherein the additional information acquiring unit is configured to change the additional information to be specified in accordance with a time.

Abstract: A monitoring device includes: a PUF-information acquiring unit acquiring PUF-information; a first PUF-information change value calculating unit calculating a degree of change from PUF-information acquired at a previous time to PUF-information acquired at a current time as a first PUF-information change value; a second PUF-information change value calculating unit calculating a degree of change from initial PUF-information to the PUF-information acquired at the current time as a second PUF-information change value; an unauthorized use determining unit comparing the first PUF-information change value with a first threshold and determining that there is unauthorized use of the predetermined monitoring target device when the first PUF-information change value is greater than the first threshold; and a deterioration determining unit comparing the second PUF-information change value with a second threshold and determining that the predetermined monitoring target device has deteriorated when the second PUF-informati

Abstract: A vehicle-mounted device is configured to identify another vehicle from an image generated by photographing the surroundings of a host vehicle using a photographing device. The vehicle-mounted device is configured to detect identification information of the another vehicle on the basis of a signal received via inter-vehicle communication with a vehicle-mounted device of the another vehicle located in a communication range of the inter-vehicle communication. The vehicle-mounted device is configured to determine whether the identification information corresponding to the another vehicle identified from an image has been acquired.

Abstract: A monitoring device includes: a PUF-information acquiring unit acquiring PUF-information; a first PUF-information change value calculating unit calculating a degree of change from PUF-information acquired at a previous time to PUF-information acquired at a current time as a first PUF-information change value; a second PUF-information change value calculating unit calculating a degree of change from initial PUF-information to the PUF-information acquired at the current time as a second PUF-information change value; an unauthorized use determining unit comparing the first PUF-information change value with a first threshold and determining that there is unauthorized use of the predetermined monitoring target device when the first PUF-information change value is greater than the first threshold; and a deterioration determining unit comparing the second PUF-information change value with a second threshold and determining that the predetermined monitoring target device has deteriorated when the second PUF-informati

Abstract: An information distribution device configured to distribute an encrypted update program to a control device connected through a wide-area communication network includes: a PUF information acquiring unit configured to acquire PUF information of the control device recorded in advance; an additional information acquiring unit configured to specify and acquire any of a plurality of pieces of additional information recorded in advance; an encryption processing unit configured to encrypt protection target information on the basis of the PUF information and the additional information that are acquired; and a transmission processing unit configured to transmit the encrypted update program to the control device, wherein the additional information acquiring unit is configured to change the additional information to be specified in accordance with a time.

Abstract: The integrated circuit includes a CPU configured to operate according to a program, a PUF information output unit configured to output PUF information while power is being supplied, a key pair output unit configured to output a public key and a private key based on the PUF information while power is being supplied, a public key transmitter configured to transmit the public key output from the key pair output unit to the outside, and a shared encryption key decryption unit configured to decrypt encrypted information produced through encryption with the public key and received from the outside with the private key output from the key pair output unit.