"Well, actually, DES uses factoring to create its key, as does all other encryption techniques"

This is patently false and indeed shows that you are not familiar with encryption. The very idea of a key is that it should be random. There may be factoring techniques used in some obscure Random Number Generator, but good RNGs use real sources of randomness. Such randomness sources are scarce, but some RNGs use disk latency and keyboard timing in conjunction with arbitrary input from less reliable entropy sources such as a human being.

Stick to your quantum theory.

Regards, Richtig