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91.发明授权公开(公告)号：US11538344B2
公开(公告)日：2022-12-27
申请号：US17115055
申请日：2020-12-08
Inventor： Tomoyuki Haga , Hideki Matsushima , Yoshihiro Ujiie , Takeshi Kishikawa
Abstract: An anomaly handling method using a roadside device is disclosed. The method includes receiving, from a vehicle, an anomaly detection notification, which includes level information indicating a level affecting safety, and a location of the vehicle. The method also includes obtaining a location of the roadside device and determining whether a distance between the location of the vehicle and the location of the roadside device is within a predetermined range. When the distance is within the predetermined range and is shorter than a first predetermined distance, not changing the level information and transmitting the received anomaly detection notification externally from the one vehicle. When the distance is within the predetermined range and is longer than or equal to the first predetermined distance, changing to decrement a level indicated by the level information, and transmitting changed anomaly detection notification externally from the one vehicle.
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公开(公告)号：US11411681B2
公开(公告)日：2022-08-09
申请号：US17128542
申请日：2020-12-21
Inventor： Takeshi Kishikawa , Tatsumi Oba , Manabu Maeda
IPC: H04L1/00 , H04L1/16 , G07C5/08 , G06K9/62 , H04L1/24 , H04W40/24 , H04L45/02 , H04W76/40 , H04L9/32
Abstract: An information processing method performed by an information processing system including a storage device to process a plurality of data frames flowing in an in-vehicle network including at least one electronic control unit includes a receiving step of sequentially receiving a plurality of data frames flowing in the in-vehicle network, a frame collection step of recording, in a reception log held in the storage device, reception interval information indicating reception intervals between the plurality of data frames as frame information, a feature acquisition step of acquiring, from the reception interval information, a feature relating to distribution of the reception intervals between the plurality of data frames, and an unauthorized data presence determination step of determining the presence/absence of an unauthorized data frame among the plurality of data frames.
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公开(公告)号：US11336618B2
公开(公告)日：2022-05-17
申请号：US17152286
申请日：2021-01-19
Inventor： Manabu Maeda , Jun Anzai , Yoshihiro Ujiie , Masato Tanabe , Takeshi Kishikawa
Abstract: A security apparatus includes a receiver that receives a frame front at least one network, a parameter storage that stores at least one examination parameter defining a content of an examination on a frame, and processing circuitry that performs operations. The operations include judging whether a predetermined condition is satisfied for the frame received by the receiver. When the predetermined condition is satisfied, updating the stored at least one examination parameter, and when the predetermined condition is not satisfied, not updating the stored at least one examination parameter. The operations also include executing an examination, based on the stored at least one examination parameter, as to whether the frame received by the receiver is an attack frame, and performing a process depending on a result of the execution of the examination such that an influence of an attack frame on at least one electronic control unit is suppressed.
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94.发明授权公开(公告)号：US11240253B2
公开(公告)日：2022-02-01
申请号：US15930093
申请日：2020-05-12
Inventor： Yoshihiro Ujiie , Jun Anzai , Yoshihiko Kitamura , Masato Tanabe , Hideki Matsushima , Tomoyuki Haga , Takeshi Kishikawa , Ryota Sugiyama
IPC: H04L29/00 , H04L29/06 , H04L29/08 , H04L12/40 , B60R16/023
Abstract: An electronic control unit is connected to a network in an in-vehicle network system. The electronic control unit includes a first control circuit and a second control circuit. The first control circuit is connected to the network via the second control circuit. The second control circuit performs a first determination process on a frame to determine conformity of the frame with a first rule. Upon determining that the frame conforms to the first rule, the second control circuit transmits the frame to the first control circuit. The first control circuit performs a second determination process on the frame to determine conformity of the frame with a second rule. The second rule is different from the first rule.
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公开(公告)号：US10999248B2
公开(公告)日：2021-05-04
申请号：US16229528
申请日：2018-12-21
Inventor： Takeshi Kishikawa , Manabu Maeda , Tomoyuki Haga
Abstract: An information processing method of processing data frames flowing over an onboard network includes a frame collecting step of obtaining, from each of received data frames, a payload included in the data frame and configured of at least one field, and recording in a reception log as one record, and a field extracting step of calculating, regarding each of a plurality of payload splitting pattern candidates indicating different regions within payloads of the plurality of data frames, one or more features relating to time-sequence change of values of the payload in the region, from the plurality of records, selecting a payload splitting pattern indicating a region of a field within the payload, based on the features, and outputting field extracting results indicating the region indicated by the selected payload splitting pattern candidate, and a category of the field based on the features.
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Patent Agency Ranking
公开(公告)号：US10986105B2
公开(公告)日：2021-04-20
申请号：US16244160
申请日：2019-01-10
Inventor： Manabu Maeda , Takeshi Kishikawa , Daisuke Kunimune
Abstract: An unauthorized activity detection method in an onboard network system. The detection method includes determining whether or not a message sent out onto the network is an attack message, saving information relating to the attack message in at least one memory in a case where the message is an attack message, identifying a communication pattern from information relating to the attack message, and determining whether or not the message matches a communication pattern. The determination of whether an attack message and determination of whether matching a communication pattern are executed on each of a plurality of messages received from the network. In the determining of whether an attack message executed on a message received after executing of determining of whether matching a communication pattern, results of the determination of whether an attack message that has already be executed are used.
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97.发明授权公开(公告)号：US10834083B2
公开(公告)日：2020-11-10
申请号：US16031079
申请日：2018-07-10
Inventor： Takeshi Kishikawa , Manabu Maeda , Tohru Wakabayashi , Toshihisa Nakano , Hideki Matsushima
IPC: H04L29/06 , B60R16/023 , H04L12/40 , H04L29/08
Abstract: An unauthorized control suppression method for use in a network system is provided. The network system includes a plurality of electronic controllers that exchange, via a communication channel, a plurality of frames The plurality of frames includes at least one control frame that instructs predetermined control to an object of control. The method receives, sequentially, the plurality of frames from the communication channel, and determines whether the predetermined control, instructed by the control frame received in the receiving, is to be suppressed, based on a set of frames received in the receiving. The set of frames is received in the receiving within a predetermined period preceding a time of reception of the control frame.
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公开(公告)号：US10798117B2
公开(公告)日：2020-10-06
申请号：US16004492
申请日：2018-06-11
Inventor： Tomoyuki Haga , Hideki Matsushima , Manabu Maeda , Yoshihiro Ujiie , Takeshi Kishikawa , Junichi Tsurumi , Jun Anzai
Abstract: An anomaly detection server is provided. The anomaly detection server is a server for counteracting an anomalous frame transmitted on an on-board network of a single vehicle. The anomaly detection server acquires information about multiple frames received on one or multiple on-board networks of one or multiple vehicles, including the single vehicle. The anomaly detection server, acting as an assessment unit that, based on the information about the multiple frames and information about a frame received on the on-board network of the single vehicle after the acquisition of the information about the multiple frames, assesses an anomaly level of the frame received on the on-board network of the single vehicle.
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99.发明授权公开(公告)号：US10530801B2
公开(公告)日：2020-01-07
申请号：US16398927
申请日：2019-04-30
Inventor： Takeshi Kishikawa , Yoshihiro Ujiie , Tomoyuki Haga , Hideki Matsushima
Abstract: An anomaly detection electronic controller performs anomaly detection processing and is connected to a bus, which a plurality of electronic controllers use for communication to communicate following a Controller Area Network (CAN) protocol. The anomaly detection electronic controller includes an anomaly detection processor that performs anomaly detection processing regarding a data frame. The anomaly detection controller also includes an anomaly detection processing requester that decides an anomaly detection processing timing in accordance with a state of a vehicle in which the bus is installed when receiving the data frame, the anomaly detection processing timing being a reception timing of one or multiple fields in the data frame. The anomaly detection processor further performs the anomaly detection processing regarding the data frame at the anomaly detection processing timing decided by the anomaly detection processing requester.
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100.发明授权公开(公告)号：US10454957B2
公开(公告)日：2019-10-22
申请号：US15275860
申请日：2016-09-26
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 includes determining whether or not content of a predetermined field in a transmitted frame meets a predetermined condition indicating fraud, transmitting an error frame before an end of the frame is transmitted in a case where it is determined that the frame meets the predetermined condition, recording a number of times the error frame is transmitted, for each identifier (ID) represented by content of an ID field included in a plurality of frames which has been transmitted, and providing a notification in a case where the number of times recorded for an ID exceeds a predetermined count.
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