Detection device, detection method and detection program
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorsKeigo Yoshida, Hiroyuki Tsukamoto, Shogo Kamiguchi, Hiroshi Ueda
Life of this patent
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Abstract
The detection device that detects presence of an unauthorized message in an in-vehicle network, the detection device includes: a state detection unit configured to detect a transition to a state in which a periodic message is transmitted in an in-vehicle network, based on content of a message transmitted in the in-vehicle network; and a processing unit configured to perform detection processing to detect presence of the unauthorized message based on a reception status of a plurality of the periodic messages in the state detected by the state detection unit.
Claims11
A detection device that detects presence of an unauthorized message in an in-vehicle network, the detection device comprising:
- a state detection unit configured to detect a transition to a periodic state, the periodic state being a state in which a periodic message is transmitted in an in-vehicle network, wherein each message transmitted in the in-vehicle network includes a frame having a header and the transition to the periodic state is determined when the header of the message includes specific content that is transmitted immediately before the start of periodic messages between a client and a server;
- and
- a processing unit configured to perform detection processing to detect presence of the unauthorized message based on a reception status of a plurality of the periodic messages in the state detected by the state detection unit, the reception status being one of a reception interval or a reception frequency in which the periodic messages are received.
A detection method performed in a detection device that detects presence of an unauthorized message in an in-vehicle network, the detection method comprising the steps of:
- detecting a transition to a periodic state, the periodic state being a state in which a periodic message is transmitted in an in-vehicle network, wherein each message transmitted in the in-vehicle network includes a frame having a header and the transition to the periodic state is determined when the header of the message includes specific content that is transmitted immediately before the start of periodic messages between a client and a server;
- and
- detecting presence of the unauthorized message based on a reception status of a plurality of the periodic messages in the detected state, the reception status being one of a reception interval or a reception frequency in which the periodic messages are received.
A computer program product for use in a detection device configured to detect unauthorized messages in an in-vehicle network, the computer program product comprising a non-transitory, machine-readable medium storing instructions which, when executed by at least one programmable processor, causes the at least one programmable processor to perform operations comprising:
- detecting a transition to a periodic state, the periodic state being a state in which a periodic message is transmitted in an in-vehicle network, wherein each message transmitted in the in-vehicle network includes a frame having a header and the transition to the periodic state is determined when the header of the message includes specific content that is transmitted immediately before the start of periodic messages between a client and a server;
- and
- a processing unit configured to perform detection processing to detect presence of the unauthorized message based on a reception status of a plurality of the periodic messages in the state detected by the state detection unit, the reception status being one of a reception interval or a reception frequency in which the periodic messages are received.
Dependencies are inferred from the claim text.