Basic Shift Cypher

This is a basic shift cypher that encyphers a plaintext message using a cypher generated by a cypher key. This is nowhere near as interesting, complex, or significant as my enigma-based cypher, so I am giving this short shrift. I only made this to procrastinate from a separate project I am working on in order to procrastinate from what I'm actually supposed to be doing. Metacrastinating, I suppose.

Select Mode: