A PHP wrapper fo the scrypt hashing algorithm Formula was removed
Last versions were
php53-scrypt requires the following formula to be installed:
autoconf 2.69 Automatic configure script builder

Recent formula history

Mike McQuaid Deprecate tap.
Andreas Braun Add description for scrypt formula
Andy Blyler php53-scrypt: convert from sha1 to sha256
Andy Blyler fix style issues
Jack Nagel Move abstract classes out of Formula directory

Formula code at GitHub