Commercial vehicle-mounted CAN bus fuzzy test method based on field weight
A technology of CAN bus and fuzz testing, which is applied in the field of field weight-based commercial vehicle CAN bus fuzz testing, can solve the problem of low validity of test cases and achieve the effect of improving test efficiency
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[0067] In order to verify the effectiveness of the method proposed in the present invention, the experimental evaluation is carried out through the online public CAN message data set. In this embodiment, the messages whose identifiers are ID 0x191 and ID 0x260 are selected to carry out the fuzzy testing method of the commercial vehicle CAN bus based on the field weight.
[0068] (1) Field division method verification based on bit flip rate
[0069] The field division of the identifier ID 0x191 and ID 0x260 is shown in Table 1. The field division of 0x191 is basically correct. In the fourth byte, there is a difference from the standard format because the content of the collected message does not change. This difference can be resolved by adding Packet volume resolved. The estimated format of 0x260 is completely consistent with the standard format, which shows that the field division of commercial vehicle CAN message data field based on the bit flip rate is effective.
[0070]...
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