A Simple CRC Checksum Node (Subflow)

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This isn't a published node, but a subflow to easily validate checksums.

The subflow requires the following inputs:

  • crcLength : example : 8
  • crcChecksum : example : "362d"
  • crcAlgorithm : example: "XMODEM"

The check will be applied against the payload - so you will need to remove any checksum that maybe part of the value to be checked.

The subflow will check the type of the payload
and if its a:

  • Buffer - will use as is
  • String - will create a buffer from it
  • Object - will stringify it before creating a buffer from it

The subflow will output the following properties

  • crcResult (boolean)
  • calculatedCrc (the calculated Checksum)

Anyway, its no fuss, but was inspired by some code @Steve-Mcl provided in a recent thread.
You may need to enable the import of modules in function nodes to use it.

Quality control is minimal here - it was a quick and dirty thing I put together for fun, but should work.

Enjoy

Screenshot 2023-10-28 at 18.59.43
Screenshot 2023-10-28 at 18.59.431312Ă—550 54.4 KB

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