(tested with Linux x86, FreeBSD x86, Solaris 2.x SPARC, OSF/1 Alpha), DOS,
WinNT/Win95.
John the Ripper supports the following cracking modes:
- wordlist with or without rules;
- "single crack", makes use of the login/GECOS information;
- incremental, tries all character combinations;
- external, allows you to define your own cracking mode.
- MD5 based password files support
