http://linux.softpedia.com/get/Terminals/COTE-Cryptonite-One-Terminal-Edition-96443.shtml
Install The Downloaded Debian App.. This will be your GUI
Download The Core Algorithms From The Button in The Application
Now Create The Key File By Entering 30 Lines of Random Text ... See The One Shown in The Picture...You can type anything in those 30 lines but note that they must differ from each other....Now Save This File in Some Portable Storage Which only Stays with you , The Person With Access To This File will be the only one who has access to the files encrypted with this key file...
Press Ctrl+Alt+Del to open the Terminal... and type cryptonite there.... But hey don't press enter now ... !!!!!
Drag The Key File into the Terminal .... Don't Press Enter Still!!!
Drag All The Files You Want To Encrypt in The Terminal
Press Enter and You Will See a Prompt Asking your intention... Press e For Encryption and press enter
And Watch as The Cryptonite Encrypts Your Files.......
Wanna View your Files.... Just Do as We Did Before Type Cryptonite in the Terminal and Drag The Key File Followed by The Files you want to decrypt in the terminal and press Enter .... But This Time Type D in The Prompt
Watch as The Cryptonite Brings Them Back From No-Where .... Cryptonite Works on Any Type of File be it Images , Music Files ,Sound Files , Movies , Videos, Documents etc etc....