Abstract:
A misuse detection method used in an electronic control unit in a vehicle network system including multiple electronic control units that communicate with one another through networks. The misuse detection method includes receiving a target data frame at one time point, and receiving a reference data frame at another time point different than the one time point. The misuse detection method further includes performing, as misuse detection for the target data frame based on a certain rule specifying a reception interval between the one time point at which the target data frame is received and the other time point at which the reference data frame is received, and determining the target data frame received is for misuse based on a length of the reception interval.
Abstract:
An anomaly detection electronic control unit (ECU) that detects unauthorized messages on a communication path is provided. An ECU that periodically transmits a first-type message including data to be monitored, and an ECU that periodically transmits a second-type message including data for comparison, are connected to the communication path. The anomaly detection ECU includes: a receiver that successively receives first-type and second-type messages; a processor that determines whether a first-type message received is normal or anomalous; and a transmitter that transmits a predetermined message in accordance with results of the determining. The determining is performed based on content of the first-type message, content of a second-type message last received at the time of receiving this first-type message, and at least one of content of a first-type message received further in the past than this first-type message, and content of a second-type message received further in the past than the second-type message last received.
Abstract:
An evaluation device for evaluating security of an electronic control system in which a plurality of electronic control units are connected to a bus used for communication includes a recording medium that holds attack procedure information indicative of contents and a transmission order of a plurality of frames, a transmitter that transmits the plurality of frames to the bus in the transmission order indicated by the attack procedure information, a monitor that monitors an actuator unit controlled by any of the plurality of electronic control units, and an evaluator that makes the evaluation on basis of a monitoring result obtained by the monitor when the transmitter transmits the plurality of frames to the bus.
Abstract:
A usual setting state in accordance with a current in-house state and a device state is selected using an acquired in-house state and a device state from a plurality of setting states classified in advance in accordance with in-house states and device states. When the selected usual setting state and the acquired setting state differ from each other, a first notification that notifies a user of the difference is performed and a state of an information terminal is transitioned to a state where an input for remotely controlling a second device can be accepted.
Abstract:
A control method used in a remote control system according to the present disclosure includes: a step of displaying candidates for a target apparatus to be controlled among apparatuses on a user interface region of a display unit of an information terminal; a step of obtaining, via a network, control indexes used to determine a display mode for the user interface region; a step of displaying, on the user interface region, one or more control menus in a display mode determined based on a selected target apparatus and the control indexes; a step of generating a control signal for causing the target apparatus to perform an operation according to control corresponding to a control menu, when the control menu is selected from the one or more displayed control menus; and a step of transmitting the control signal to the target apparatus via the network.
Abstract:
An information management method collects log information of one or more home electrical apparatuses corresponding to service providers. Display screen data is generated which indicates a status of the log information. The display screen data includes groups of information which each contain information on an apparatus, a service provider corresponding to the apparatus, and log information output from the apparatus. Provision of the log information of each group is individually selectable. The display screen data is provided via a network to a display terminal that performs access to a server device. Information is received from the display terminal, which indicates that selection on whether or not provision of the log information is performed. Provision of the log information is not performed on the selected group when a determination is made that refusal of provision of the log information on the selected group is performed.
Abstract:
A gateway device for a vehicle network system installed in a vehicle is provided. The vehicle network system includes a network, an electronic control unit connected to the network, and the gateway device connected to the first network and configured to communicate outside the vehicle. The gateway device receives a first frame from outside the vehicle; determines whether or not the first frame is appropriate; generates a second frame when the first frame is not determined to be appropriate; and transmits the second frame to the network. The second frame includes control information and additional information based on content of the first frame. The control information restricts processing of the additional information included in the second frame by the electronic control unit, after the second frame is received by the electronic control unit.
Abstract:
In an anomaly determination method for determining an anomaly in a received message, a plurality of messages which include messages that are periodic and each of which includes a first field having a fixed value and a second field having a variable value are each received as the received message, and one of a plurality of combinations to be used for determination each of which includes at least one of a plurality of anomaly determinations including an anomaly determination utilizing a reception timing based on the periodicity or the number of received messages, an anomaly determination utilizing the first field, and an anomaly determination utilizing the second field, is selected according to one or more criteria among available execution time of the anomaly determination method, a load amount, a data amount, and the number of messages.
Abstract:
A security device connected to a plurality of networks in a vehicle is provided. The security device determines, with regard to a frame received from a first network, whether to transmit a determination request for the frame outside the vehicle. The security device transmits the determination request outside the vehicle in a case where it is determined to transmit the determination request outside the vehicle, transmits, before obtaining a determination result from outside the vehicle in accordance with the determination request, the frame to a second network, and then obtains determination results from outside the vehicle in accordance with the determination request. The security device outputs presentation information in accordance with the determination result.
Abstract:
An information management method collects log information of one or more home electrical apparatuses corresponding to service providers. Display screen data is generated which indicates a status of the log information. The display screen data includes groups of information which each contain information on an apparatus, a service provider corresponding to the apparatus, and log information output from the apparatus. Provision of the log information of each group is individually selectable. The display screen data is provided via a network to a display terminal that performs access to a server device. Information is received from the display terminal, which indicates that selection on whether or not provision of the log information is performed. Provision of the log information is not performed on the selected group when a determination is made that refusal of provision of the log information on the selected group is performed.