 | This article needs additional citations for verification. (June 2014) |
 Running john with a password list on a shadow file | |
| Developer(s) | OpenWall |
|---|---|
| Initial release | 1996[1] |
| Stable release | 1.9.0[2]
/ May 14, 2019 |
| Repository | |
| Operating system | Cross-platform |
| Type | Password cracking |
| License | GNU General Public License Proprietary (Pro version) |
| Website | www |
John the Ripper is a free password cracking software tool.[3] Originally developed for the Unix operating system, it can run on fifteen different platforms (eleven of which are architecture-specific versions of Unix, DOS, Win32, BeOS, and OpenVMS). It is among the most frequently used password testing and breaking programs[4] as it combines a number of password crackers into one package, automatically detects password hash types, and includes a customizable cracker. It can be run against various encrypted password formats including several crypt password hash types most commonly found on various Unix versions (based on DES, MD5, or Blowfish), Kerberos AFS, and Windows NT/2000/XP/2003 LM hash. Additional modules have extended its ability to include MD4-based password hashes and passwords stored in LDAP, MySQL, and others.[5]
- ^ "john-users – Re: When was John created?". Archived from the original on 2021-10-28. Retrieved 2021-10-28.
- ^ "Announce - [openwall-announce] John the Ripper 1.9.0-jumbo-1". Archived from the original on 2020-11-08. Retrieved 2019-06-04.
- ^ Anonymous (2001). Maximum Linux Security (2 ed.). Sams Publishing. p. 154. ISBN 0-672-32134-3.
- ^ "Password Crackers". Concise Cybersecurity. Archived from the original on 2017-04-04. Retrieved 2016-12-03.
- ^ "John the Ripper". sectools.org. Archived from the original on 2019-03-15. Retrieved 2016-03-06.