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Preface
With the booming development of the smart car industry, many car manufacturers are now paying more and more attention to vehicle safety mechanisms. Many manufacturers have established their own security teams, and Checksum and Counter are one of the safety mechanisms.
Students who have tested CAN or ETH networks often see the Checksum parameter in CAN Msg or ETH PDU. When it comes to Checksum, we must explain the CRC check.
In vehicle CAN network communication, the signal will be attenuated.