Invention Grant
- Patent Title: Key management method used in encryption processing for safely transmitting and receiving messages
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Application No.: US17036470Application Date: 2020-09-29
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Publication No.: US11569984B2Publication Date: 2023-01-31
- Inventor: Yoshihiro Ujiie , Jun Anzai , Yoshihiko Kitamura , Masato Tanabe , Takeshi Kishikawa
- Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Applicant Address: US CA Torrance
- Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Current Assignee Address: US CA Torrance
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2015-168311 20150827
- Main IPC: H04L9/08
- 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.
Public/Granted literature
- US20210028925A1 KEY MANAGEMENT METHOD USED IN ENCRYPTION PROCESSING FOR SAFELY TRANSMITTING AND RECEIVING MESSAGES Public/Granted day:2021-01-28
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