John the Ripper

From Free Software Directory
Jump to: navigation, search


John the Ripper
Detects weak passwords

John the Ripper is a fast password cracker, currently available for many flavors of *nix (11 are officially supported, not counting different architectures) and other platforms. Its primary purpose is to detect weak Unix passwords. It supports several crypt(3) password hash types which are most commonly found on various *nix flavors. Several other hash types are added with contributed patches.



Verified by

Verified on


Verified by

Janet Casey

Verified on

19 September 2003

Leaders and contributors

Alexander Peslyak Maintainer

Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,

Software prerequisites


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.