https://openwall.info/wiki/ 2026-04-21T14:40:23+02:00 https://openwall.info/wiki/ https://openwall.info/wiki/lib/tpl/local/images/favicon.ico text/html 2012-07-07T22:52:16+02:00 https://openwall.info/wiki/john/essays/fast-and-slow-hashes?rev=1341694336&do=diff Summary This article is intended for new John users who have not had a lot of experience cracking different types of hashes. The goal is to explain the differences between fast hashes and slow hashes so that new users will have realistic expectations when using John to crack passwords. Note that the original essay was posted to the John Users mailing list.