The program, once used, creates an encrypted space that appears as a volume on your desktop. When the space is locked, its content is secure. When unlocked, users can copy, move, and delete files.
The secured space defaults to 128-bit AES encryption, but that can be changed to 256-bit AES in the application’s preferences.
Protect Files 1.0 retails for $15, with a trial version also available.
The software runs on OS X 10.4 and later to install and run.