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. 2024 Feb 23;24(5):1447. doi: 10.3390/s24051447
Algorithm 1 Firmware download and verification algorithm
  • 1:

    procedureDownloadAndVerifyFirmware(URL)

  • 2:

        expectedHashValue← ReceiveExpectedHashViaMQTT()

  • 3:

        firmware← DownloadFirmware(URL)

  • 4:

        allChunks← []

  • 5:

        while not EndOfFirmware(firmware) do

  • 6:

            chunk← ReadNextChunk(firmware, 4096)

  • 7:

            allChunks.append(chunk)

  • 8:

        end while

  • 9:

        completeFirmware← Concatenate(allChunks)

  • 10:

        hashValue← CalculateHash(completeFirmware)

  • 11:

        if hashValue != expectedHashValue then

  • 12:

            throwVerificationError(“Hash MisMatch”)

  • 13:

        end if

  • 14:

        StoreInTemporaryDirectory(firmware)

  • 15:

    end procedure