Matasano Chargen » Blog Archive » Typing The Letters A-E-S Into Your Code? You’re Doing It Wrong!
http://www.matasano.com/log/1749/typing-the-letters-a-e-s-into-your-code-youre-doing-it-wrong/

A-E

UTF8Encoding

Professional crypto people don’t even get this stuff right. But if you have to encrypt something, you might as well use something that has already been tested.

Matasano Chargen