====== Protection ======

  * [[http://www.pruefziffernberechnung.de/Startseite.shtml|www.pruefziffernberechnung.de]]
  * [[http://repairfaq.cis.upenn.edu/filipg/LINK/F_crc_v3.html|A Painless Guide to CRC Error Detection Algorithms Index V3.00 (9/24/96)]] [(https://web.archive.org/web/20190926065725/http://repairfaq.cis.upenn.edu/filipg/LINK/F_crc_v3.html)]