John the Ripper is a fast password cracker, currently available for many flavors of Unix, Windows, DOS, BeOS, and OpenVMS. Its primary purpose is to detect weak Unix passwords. It supports several crypt(3) password hash types commonly found on Unix systems, as well as Windows LM hashes. On top of this, lots of other hashes and ciphers are added in the community-enhanced version (-jumbo), and some are added in John the Ripper Pro.
| Tags | Security Cryptography Systems Administration Text Processing Filters Utilities |
|---|---|
| Licenses | GPLv2 |
| Operating Systems | BeOS Mac OS X Windows MS-DOS Windows Windows Windows POSIX Unix |
| Implementation | Assembly C Unix Shell Perl |
Recent releases


Release Notes: -jumbo was rebased on 1.7.9. Support for RADIUS shared secrets and for SHA-0 was added. MSSQL (old and 2005), MySQL (SHA-1 based), and Lotus5 hashing were optimized. OpenMP parallelization was added for Lotus5. x86-64 builds now make use of SSE2 intrinsics for more hash and cipher types. More i-suffixed make targets were added (which use an icc-generated assembly file for SSE2 intrinsics), including for 32-bit x86 builds. An MD4 implementation in assembly for x86/SSE2 and MMX was added. An alternate implementation of NTLM hashing was added (--format=nt2). A binary build for Windows was made.


Release Notes: OpenMP parallelization of MD5-crypt and bitslice DES has been added. DES key setup has been reworked. x86-64 assembly code for DES S-boxes has been optimized. Support for DES-based tripcodes has been added. Larger hash table sizes for faster processing of millions of hashes per salt have been added. Detection of Intel AVX and AMD XOP with fallback to an alternate program binary has been added. Fallback to a non-OpenMP build has been added. A benchmark result comparison tool has been added. The bundled common passwords list has been updated. Many minor enhancements and a few bugfixes were made.


Release Notes: OpenMP support has been added for MD5-based crypt(3) and Apache $apr1$ hashes when building with SSE2 intrinsics, as well as for SAP CODVN B and SAP CODVN G. Raw MD4 has been enhanced with optional SSE2 intrinsics. The SSE2 intrinsics code for MD4, MD5, and SHA-1 has been pre-built with Intel's compiler into an assembly file, used with the new i-suffixed make targets. Support for occasional false positives or multiple correct guesses has been added and made use of for WinZip/AES and CRC-32. md5_gen has been renamed to dynamic. Numerous other fixes and enhancements have been made.


Release Notes: Support for cracking of encrypted PKZIP archives, Mac OS X 10.7 salted SHA-512 hashes, and DES-based tripcodes has been added. Optional OpenMP parallelization has been added for salted SHA-1 hashes of Mac OS X 10.4-10.6. DIGEST-MD5 cracker has been revised to be usable without requiring source code customizations. Experimental support for dynamically loaded plugins has been added. ".include" directive support and duplicate rule suppression have been added for john.conf. Support for additional character encodings and related features has been added. Numerous other enhancements have been made.


Release Notes: Support for more character encodings via the new "--encoding" option has been added (currently UTF-8, ISO-8859-1, koi8-r, and cp1251). Support for raw SHA-224, SHA-256, SHA-384, and SHA-512 hashes has been added. The Makefile has been revised to work with Solaris native make again.
Recent comments
02 Oct 2011 23:32
A "cryptation-ENGINE" ,... say a "crypto-decrypto(name not licenced yet at 19:21,
2-11-2011,local time Mtl,Qc,Ca )" evolutive that is would probably used a
quasi-neural-metadata-handler...besides I would "reallly" like to see the 3 algos
ncessary as starting point written in less than 75 lines each and no more than 130
"caractors" per lines.........................!