This is a note to anyone tempted to use this code.

Good encryption algorithms are surprisingly hard to write, and very hard to verify. While rolling by hand is in general not good practice, rolling your own encryption algorithm is just plain stupid when so many good ones are publically available.

The above is particularly bad. This is just an xor. The only things notable about using xor is how often people make that mistake, and how often cryptographers mention that it is insecure. Pick up Applied Cryptography if you are curious how to crack it.

Needless to say, I voted -- on this node.