code: def remove_armor(armored_data):
      
      stream = io.BytesIO(armored_data)
      lines = stream.readlines()[3:-1]
      data = base64.b64decode(b''.join(lines))
      payload, checksum = data[:-3], data[-3:]
      assert util.crc24(payload) == checksum
      return payload
docs: Decode armored data into its binary form.