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公开(公告)号:US20200021611A1
公开(公告)日:2020-01-16
申请号:US16583996
申请日:2019-09-26
Inventor: Manabu MAEDA , Takeshi KISHIKAWA , Daisuke KUNIMUNE
Abstract: A fraud detection method includes: determining whether a period of a message repeatedly transmitted in an in-vehicle network is anomalous; detecting whether arbitration occurs when the message is transmitted in the in-vehicle network; and determining that the message is an anomalous message, in the case where the period of the message is anomalous and no arbitration occurs when the message is transmitted in the in-vehicle network.
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公开(公告)号:US20190104143A1
公开(公告)日:2019-04-04
申请号:US16207875
申请日:2018-12-03
Inventor: Manabu MAEDA , Hideki MATSUSHIMA , Tomoyuki HAGA , Yuji UNAGAMI , Yoshihiro UJIIE , Takeshi KISHIKAWA
IPC: H04L29/06 , B60R16/023 , H04L12/28 , H04L29/08 , H04L12/40
Abstract: A fraud sensing method for use in an in-vehicle network system including a plurality of electronic control units that communicate with each other via a network includes detecting that a state of a vehicle satisfies a predetermined condition, and switching, upon detecting that the state of the vehicle satisfies the predetermined condition, an operation mode of a fraud-sensing electronic control unit connected to the network between a first mode in which a first type of sensing process for sensing a fraudulent message in the network is performed and a second mode in which the first type of sensing process is not performed.
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公开(公告)号:US20180219832A1
公开(公告)日:2018-08-02
申请号:US15940200
申请日:2018-03-29
Inventor: Manabu MAEDA , Jun ANZAI , Yoshihiro UJIIE , Masato TANABE , Takeshi KISHIKAWA
IPC: H04L29/06 , B60R16/023
CPC classification number: H04L63/0209 , B60R16/023 , G06F21/55 , G06F21/85 , H04L12/28 , H04L12/40006 , H04L63/0245 , H04L63/14 , H04L63/1441 , H04L67/12
Abstract: A security apparatus is provided that is connected to a bus. The security apparatus includes a receiver that receives a first frame from the bus, a memory that stores an examination parameter defining a content of an examination on the first frame, and processing circuitry that performs operations. The performed operations include first determining whether a predetermined condition is satisfied for the first frame. The performed operations also include, in a case where the first determining determined that the predetermined condition is satisfied, updating the examination parameter stored in the memory. The performed operations further include second determining whether the first frame is an attack frame based on the updated examination parameter stored in the memory.
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