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, many other hash types are added with contributed patches, and some are added in John the Ripper Pro.
Changes: 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.
Download one of the latest official free versions (release notes):
- John the Ripper 1.7.8 (stable, Unix - sources, tar.gz, 830 KB) and its signature
- John the Ripper 1.7.8 (stable, Unix - sources, tar.bz2, 680 KB) and its signature
- John the Ripper 1.7.0.1 (stable, Windows - binaries, ZIP, 1360 KB) and its signature
- John the Ripper 1.7.0.1 (stable, DOS - binaries, ZIP, 895 KB) and its signature
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