This is pretty close to the direction things have been going for some time now. Use of a computer for Encryption and Internet use is a bad idea and quite insecure.

Using the 'old school' method to create One Time Pads is quite secure, so long as the keys remain secure till use, then destroyed after use.

Here is a PDF How To http://users.telenet.be/d.rijmenants/papers/one_time_pad.pdf
Just read and practice till it all 'clicks' avoiding use of the PC for really secure messages. A favorite way for the .GOV to operate is to place a hidden keystroke program to monitor the target computer(s). Use the old paper and pencil, destroy any sent/copied messages.