Crypturn

Crypturn is a powerful and safe tool to protect private documents on your
hard disk, Flash device and before sending via email, Crypturn quickly
encrypts any file type. Crypturn now runs from the command line this means
that you can incoparate Crypturn with your other apps and batch scripts. We
have made crypturn even more secure by changing the encryption from 64bit to
448 bit Blowfish encryption. (in System Utilities)