I installed cryptkeeper in my laptop and when I click on the icon, it is not opening up or responding.
I'm using Ubuntu 12.10 64-bit version. Please help me on how to use this software or tell me how to lock/encrypt my files and folders.
I've used encfs from the command line and it works well in Ubuntu 12.10. The program you're trying to use, cryptkeeper, is a Gnome tray applet which brings encfs to a graphical window. However cryptkeeper seems to work with earlier versions of Ubuntu. I also use Ubuntu 12.10 and couldn't get the applet to appear despite cryptkeeper showing as a process in 'top'. I would guess that it's not compatible with the Unity desktop.
The command line isn't difficult for this, so maybe you would like to try this:
So what I've suggested is the command line stuff that cryptkeeper would have done under the surface. Hope it's useful!