Featureful UNIX password cracker

Current version

john requires the following formula to be installed:
xz 5.2.3 General-purpose data compression with high compression ratio

Recent formula history

ilovezfs john: use libexec (#11693)
Mike McQuaid john: remove unused fails_with :llvm.
Mike McQuaid Use hash rockets again. (#5177)
Mike McQuaid Use Ruby 1.9+ symbol hash keys in all formulae. (#4942)
Nikolaus Wittenstein Add descriptions to all remaining homebrew packages

Formula code at GitHub