公开(公告)号：US11804953B2

公开(公告)日：2023-10-31

申请号：US18086282

申请日：2022-12-21

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yoshihiro Ujiie ,  Jun Anzai ,  Yoshihiko Kitamura ,  Masato Tanabe ,  Takeshi Kishikawa

IPC: H04L9/08 ,  H04L9/40 ,  B60R16/023 ,  H04L67/12

CPC classification number: H04L9/08 ,  B60R16/0231 ,  H04L9/083 ,  H04L9/088 ,  H04L9/0822 ,  H04L63/0428 ,  H04L63/068 ,  H04L67/12 ,  H04L2209/84

Abstract: A key management method serves as an electronic control unit (ECU) in an onboard network system having a plurality of ECUs that perform communication by frames via a network. The method includes storing, in a first-type ECU, a shared key to be mutually shared with second-type ECUs, and executing encryption processing regarding a framed transmitted or received via the network, based on the shared key. The method further includes executing, by the first-type ECU, inspection of a security state of the shared key stored by the second type ECUs in a case where a vehicle is in at least one of the following particular states, including immediately after the vehicle is not driving and is entering the accessory-on state, immediately after the vehicle is not driving and the vehicle is entering the accessory-off state, and immediately after the vehicle engine is started.

公开(公告)号：US11113382B2

公开(公告)日：2021-09-07

申请号：US15386055

申请日：2016-12-21

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Yoshihiro Ujiie ,  Masato Tanabe ,  Takeshi Kishikawa ,  Tomoyuki Haga ,  Hideki Matsushima

IPC: G06F21/00 ,  H04L29/06 ,  G06F21/44 ,  H04L12/40 ,  B60R16/023 ,  G06F13/42 ,  H04L29/08

Abstract: A vehicle network system employing a controller area network protocol includes a bus, a first electronic control unit, and a second electronic control unit. The first electronic control unit transmits, via the bus, at least one data frame including an identifier relating to data used for a calculation for obtaining a message authentication code indicating authenticity of transmission content. The second electronic control unit receives the at least one data frame transmitted via the bus and verifies the message authentication code in accordance with the identifier included in the at least one data frame.

公开(公告)号：US10992688B2

公开(公告)日：2021-04-27

申请号：US16011677

申请日：2018-06-19

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Takeshi Kishikawa ,  Yoshihiro Ujiie ,  Jun Anzai ,  Hideki Matsushima ,  Masato Tanabe

IPC: H04L29/06 ,  B60W50/14 ,  H04L9/32 ,  H04L12/40 ,  H04L12/26 ,  H04L29/08 ,  H04L12/28 ,  H04L9/08 ,  H04L9/00

Abstract: An unauthorized activity detection method is provided in an onboard network system having multiple electronic units (ECU) that perform communication via a bus, such that an occurrence of an unauthorized state can be detected by monitoring frames transmitted over the bus. The unauthorized activity detection method determines, by a monitoring electronic control unit using unauthorized activity detection rule information indicating a first condition, whether or not a set of frames received from the bus satisfies the first condition. The first condition being a condition regarding a relation in content between a first frame having a first identifier and a second frame having a second identifier that differs from the first identifier. And the method further detects the occurrence of the unauthorized state in a case where the first condition is not satisfied.

公开(公告)号：US10826687B2

公开(公告)日：2020-11-03

申请号：US16686855

申请日：2019-11-18

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yoshihiro Ujiie ,  Jun Anzai ,  Yoshihiko Kitamura ,  Masato Tanabe ,  Takeshi Kishikawa

IPC: H04L9/08 ,  H04L29/06 ,  B60R16/023 ,  H04L29/08

Abstract: A key management method serves as an electronic control unit (ECU) in an onboard network system having a plurality of ECUs that perform communication by frames via a network. The method includes storing a shared key, acquiring a session key, and executing encryption processing using the session key. The method further includes executing inspection of a security state of the shared key stored in a case where a vehicle is in at least one of the following particular states: the vehicle is not driving and is an accessory-on state; a fuel cap of the vehicle is open, and the vehicle is not driving and is fueling; the vehicle is parked, which is indicated by the gearshift; the vehicle is in a stopped state before driving, which is indicated by the gearshift; and a charging plug is connected to the vehicle, and the vehicle is electrically charging.

公开(公告)号：US11971978B2

公开(公告)日：2024-04-30

申请号：US17393713

申请日：2021-08-04

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yoshihiro Ujiie ,  Masato Tanabe ,  Takeshi Kishikawa ,  Tomoyuki Haga ,  Hideki Matsushima

IPC: G06F21/00 ,  B60R16/023 ,  G06F13/42 ,  G06F21/44 ,  H04L9/40 ,  H04L12/40 ,  H04L29/06 ,  H04L67/12

CPC classification number: G06F21/44 ,  B60R16/0231 ,  G06F13/4208 ,  H04L12/40 ,  H04L63/123 ,  H04L2012/40215 ,  H04L67/12

Abstract: A vehicle network system employing a controller area network protocol includes a bus, a first electronic control unit, and a second electronic control unit. The first electronic control unit transmits, via the bus, at least one data frame including an identifier relating to data used for a calculation for obtaining a message authentication code indicating authenticity of transmission content. The second electronic control unit receives the at least one data frame transmitted vis the bus and verifies the message authentication code in accordance with the identifier included in the at least one data frame.

公开(公告)号：US11569984B2

公开(公告)日：2023-01-31

申请号：US17036470

申请日：2020-09-29

Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA

Inventor： Yoshihiro Ujiie ,  Jun Anzai ,  Yoshihiko Kitamura ,  Masato Tanabe ,  Takeshi Kishikawa

IPC: H04L9/08 ,  H04L9/40 ,  B60R16/023 ,  H04L67/12

Abstract: A key management method serves as an electronic control unit (ECU) in an onboard network system having a plurality of ECUs that perform communication by frames via a network. The method includes storing a shared key and executing encryption processing based on the shared key. The method further includes executing inspection of a security state of the shared key stored in a case where a vehicle is in at least one of the following particular states: the vehicle is not driving and is an accessory-on state; a fuel cap of the vehicle is open, and the vehicle is not driving and is fueling; the vehicle is parked, which is indicated by the gearshift; the vehicle is in a stopped state before driving, which is indicated by the gearshift; and a charging plug is connected to the vehicle, and the vehicle is electrically charging.

公开(公告)号：US20180167360A1

公开(公告)日：2018-06-14

申请号：US15880769

申请日：2018-01-26

Applicant: Panasonic Intellectual Property Corporation of America

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 ,  H04L9/36 ,  H04L12/28 ,  H04L12/40006 ,  H04L63/0245 ,  H04L63/14 ,  H04L63/1441 ,  H04L67/12

Abstract: A gateway serving as a security apparatus connected to one or a plurality of buses includes a receiver that receives a frame from a bus, a parameter storage that stores an examination parameter defining a content of an examination of the frame, an updater configured to, in a case where a predetermined condition is satisfied for the frame received by the receiver, update the examination parameter stored in the parameter storage, and an examiner that performs an examination, based on the examination parameter stored in the parameter storage, in terms of judgment of whether or not the frame received by the receiver is an attack frame.