NETWORK DEVICE AND NETWORK SYSTEM
First Claim
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1. An electronic control unit (ECU), comprising:
- a computer configured to judge whether a message from at least one ECU of a plurality of ECUs is a valid message or not, and to detect a malicious message; and
a controller configured to, if the malicious message is detected, overwrite the malicious message with an ERROR FRAME code during receipt of a data frame,wherein the ECU is connected to the at least one ECU via a controller area network (CAN) bus,wherein the computer is configured to detect the malicious message by using an ID, a payload a cycle, and a frequency.
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Abstract
A network device connected via a bus with a plurality of network devices includes: an authentication unit that executes authentication based upon message authentication information included in data transmitted, via the bus, by one of the plurality of network devices acting as a sender device; and a processing unit that invalidates the data upon determining that unauthorized data have been transmitted by the sender device impersonating another network device among the plurality of network devices if the authentication fails.
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17 Claims
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1. An electronic control unit (ECU), comprising:
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a computer configured to judge whether a message from at least one ECU of a plurality of ECUs is a valid message or not, and to detect a malicious message; and a controller configured to, if the malicious message is detected, overwrite the malicious message with an ERROR FRAME code during receipt of a data frame, wherein the ECU is connected to the at least one ECU via a controller area network (CAN) bus, wherein the computer is configured to detect the malicious message by using an ID, a payload a cycle, and a frequency. - View Dependent Claims (15)
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2. A network device, comprising a processor wherein the processor is configured to:
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(1) judge whether a message from at least one network device of a plurality of network devices is a valid message or not; and
to detect a malicious message;(2) if a malicious message is detected, overwrite the malicious message with an ERROR FRAME code; wherein the network device is connected to the one network device via a controller area network (CAN) bus, wherein the processor is configured to detect the malicious message by using an ID, a payload, a cycle, and a frequency. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16)
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14. An electronic control unit (ECU), comprising:
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a computer configured to judge whether a message from at least one ECU of a plurality of ECUs is a valid message or not, and to detect a malicious message; and a controller configured to, if the malicious message is detected, overwrite the malicious message with an ERROR FRAME code, wherein the ECU is connected to the at least one ECU via a controller area network (CAN) bus, wherein the computer is configured to detect the malicious message by using an ID, a payload a cycle, and a frequency. - View Dependent Claims (17)
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Specification