[JoeFromSidney]

One-time cipher pads are still pretty safe so long as you just use them once.

The problem is getting genuinely random numbers for the key. Computers produce only pseudorandom numbers, and even if the keys are genuinely random, keeping the "code book" secure is difficult.

[JoeFromSidney]

I've looked into using tables of economic and demographic data, and telephone directories, as sources of random numbers. They "sort of" solve the problem of distributing the keys. The numbers pass several tests of randomness, but if "they" figure out which table you're using, the game is up.