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公开(公告)号：US11647021B2
公开(公告)日：2023-05-09
申请号：US17215810
申请日：2021-03-29
Inventor： Yuji Unagami , Manabu Maeda , Tomoki Takazoe , Yoichi Masuda , Hideki Matsushima
CPC classification number: H04L63/0869 , G06F21/445 , H04L9/0833 , H04L9/0844 , H04L9/0891 , H04L9/14 , H04L9/30 , H04L9/3263 , H04L9/3273 , H04L63/065 , H04L63/104
Abstract: In an authentication method, a first controller generates a first group key, executes first mutual authentication with devices within a group, and shares the first group key with devices that have succeeded in the first mutual authentication. When a second controller joins the group, the first controller decides which coordinator manages a group key used in common. The first controller executes second mutual authentication with the coordinator, and shares the first group key with the coordinator when the second mutual authentication is successful. The coordinator performs encrypted communication within the group using the first group key, generates a second group key when the first group key valid time runs out and before updating the first group key, executes third mutual authentication with the devices and a third controller, and updates the first group key of the devices and the third controller that have succeeded in the third authentication.
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公开(公告)号：US11595422B2
公开(公告)日：2023-02-28
申请号：US17344097
申请日：2021-06-10
Inventor： Yoshihiro Ujiie , Hideki Matsushima , Tomoyuki Haga , Manabu Maeda , Yuji Unagami , Takeshi Kishikawa
Abstract: A method for use in a network communication system including a plurality of electronic controllers that communicate with each other via a bus in accordance with a Controller Area Network (CAN) protocol determines whether or not content of a predetermined field in a frame which has started to be transmitted meets a predetermined condition indicating fraud. In a case where the content of the predetermined field meets the predetermined condition, a frame including predetermined consecutive dominant bits for notifying an anomaly is transmitted before an end of the frame is transmitted. A number of times the frame including the predetermined consecutive dominant bits is transmitted is recorded for each identifier (ID) represented by content of an ID field included in a plurality of frames which has been transmitted. A malicious electronic controller is determined in accordance with the number of times recorded for each ID.
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公开(公告)号：US11574340B2
公开(公告)日：2023-02-07
申请号：US16452158
申请日：2019-06-25
Inventor： Manabu Maeda , Motoji Ohmori , Yuichi Futa , Natsume Matsuzaki , Hideki Matsushima , Yuji Unagami
Abstract: An information providing method and apparatus a) transmits a request via a network, for recommended driving information for a first user to be received and displayed on a display of the first user, b) receives from the network driving data from a plurality of vehicles about how a plurality of users drive their vehicles including the first user, c) extracts a similar user from among the plurality of users who drives a vehicle with a predetermined similarity to how the first user drives a vehicle, and determines recommended driving information of the similar user from the similar user's driving history, d) transmits over the network to the first user the recommended driving information of the similar user, and e) displays on a display of the first user the recommended driving information of the similar user.
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公开(公告)号：US11522733B2
公开(公告)日：2022-12-06
申请号：US17201797
申请日：2021-03-15
Inventor： Yoshihiro Ujiie , Hideki Matsushima , Toshihisa Nakano , Tohru Wakabayashi , Hiroshi Amano , Tomoyuki Haga , Takeshi Kishikawa
IPC: H04L12/40 , H04L9/40 , H04L12/46 , H04B1/3822 , H04L12/66
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.
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公开(公告)号：US11469921B2
公开(公告)日：2022-10-11
申请号：US16798530
申请日：2020-02-24
Inventor： Junichi Tsurumi , Yoshihiro Ujiie , Toshihisa Nakano , Hideki Matsushima , Yuji Unagami
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.
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Patent Agency Ranking
76.发明授权公开(公告)号：US11363045B2
公开(公告)日：2022-06-14
申请号：US16654728
申请日：2019-10-16
Inventor： Yuishi Torisaki , Tomoyuki Haga , Takamitsu Sasaki , Takeshi Kishikawa , Hideki Matsushima
Abstract: A vehicle anomaly detection server includes: a communicator that communicates with a vehicle to receive a log of an in-vehicle network in the vehicle; a processor; and a memory including at least one set of instructions that, when executed by the processor causes the processor to perform operations including: selecting, when information indicating that an anomaly is occurring to a first vehicle among vehicles is obtained by the processor, an anomaly-related vehicle from among the vehicles based on the anomaly, the first vehicle being the vehicle that communicates with the communicator; transmitting, to the anomaly-related vehicle via the communicator, a first request to transmit a log of an in-vehicle network in the anomaly-related vehicle; and determining whether an anomaly is occurring to the anomaly-related vehicle, based on information indicated by the log transmitted from the anomaly-related vehicle and received by the communicator.
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公开(公告)号：US11310070B2
公开(公告)日：2022-04-19
申请号：US17169958
申请日：2021-02-08
Inventor： Manabu Maeda , Takamitsu Sasaki , Tomoyuki Haga , Hideki Matsushima
IPC: H04L12/40 , H04L12/66 , H04L69/08 , H04L69/16 , H04L69/18 , H04L12/28 , H04L12/46 , H04L67/12 , H04L12/44 , H04L101/622 , H04L101/627
Abstract: A network hub is provided for an onboard network system. The onboard network system includes first and second networks for transmission of first-type and second-type frames following first and second communication protocols. The network hub includes a receiver that receives a first-type frame. A processor determines whether or not the first-type frame received by the receiver includes first information that is a base for a second-type frame to be transmitted to the second network, to obtain a determination result, and selects a port to send a frame based on the first-type frame based on the determination result. A transmitter sends the frame based on the first-type frame to a wired transmission path connected to the port selected by the processor based on the first-type frame received by the receiver.
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公开(公告)号：US11217042B2
公开(公告)日：2022-01-04
申请号：US16540668
申请日：2019-08-14
Inventor： Takeshi Kishikawa , Tomoyuki Haga , Yuishi Torisaki , Takamitsu Sasaki , Hideki Matsushima
IPC: G07C5/00 , G07C5/02 , H04W4/029 , H04L29/08 , G06Q50/30 , G08G1/01 , G08G1/04 , G07C5/08 , B60R25/32
Abstract: A vehicle monitoring apparatus includes: a first communicator that receives specifying information for specifying a target vehicle from a server; and an acquirer that acquires driving information from the target vehicle, the driving information being information regarding driving of the target vehicle specified by the specifying information received by the first communicator. The first communicator transmits the driving information acquired by the acquirer to the server. For example, the acquirer may acquire the driving information obtained from the target vehicle through communication.
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公开(公告)号：US11128657B2
公开(公告)日：2021-09-21
申请号：US16520782
申请日：2019-07-24
Inventor： Takeshi Kishikawa , Hideki Matsushima , Tomoyuki Haga , Manabu Maeda , Takamitsu Sasaki
IPC: G06F21/00 , H04L29/06 , B60R16/023 , G07C5/00
Abstract: A gateway that notifies a fraud detection server located outside a vehicle of information about an in-vehicle network system including an in-vehicle network includes: a priority determiner that determines a priority using at least one of: a state of the vehicle including the in-vehicle network system; an identifier of a message communicated on the in-vehicle network; and a result of fraud detection performed on the message; a frame transmitter-receiver that transmits and receives the message communicated on the in-vehicle network; a frame interpreter that extracts information about the in-vehicle network based on the message received by the frame transmitter-receiver; and a frame uploader that notifies the fraud detection server of notification information including the priority and the information about the in-vehicle network.
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公开(公告)号：US10970424B2
公开(公告)日：2021-04-06
申请号：US16776869
申请日：2020-01-30
Inventor： Hideki Matsushima , Teruto Hirota , Yukie Shoda , Shunji Harada
IPC: G06F21/87 , G06F21/14 , G06F21/10 , G06F21/52 , H04L29/06 , G06F21/53 , G06F21/57 , G06F12/14 , H04L9/32 , G06F21/74
Abstract: A program execution device capable of protecting a program against unauthorized analysis and alteration is provided. The program execution device includes an execution unit, a first protection unit, and a second protection unit. The execution unit executes a first program and a second program, and is connected with an external device that is capable of controlling the execution. The first protection unit disconnects the execution unit from the external device while the execution unit is executing the first program. The second protection unit protects the first program while the execution unit is executing the second program.
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