This program is intended to replace crypt(1), It supports all the
algorithms and modes in libmcrypt (BLOWFISH, TWOFISH, DES, TripleDES,
3-WAY, SAFER, LOKI97, GOST, RC2, RC6, MARS, IDEA, RIJNDAEL, SERPENT,
CAST, ARCFOUR and WAKE), and is compatibile with UNIX crypt(1) and
with des(1) from Solaris.

WWW:  http://mcrypt.sourceforge.net/