Oh, it's not so much throwaway encryption as much as it is "I don't trust this webpage and don't want to enter my key in it". However, I'll have a look at the code for my own peace of mind.
EmailPK looks great, great job! I love it.
EDIT: By the way, I assume you're aware of the fact that your name is Greek for "escape"?
Not exactly, it's closer to "escaping" or "eluding" in modern Greek, but it comes from dia (through) + fygi (flight), so maybe it meant "slips through the cracks" in ancient Greek. I think it meant "escape" back then too, though.
EmailPK looks great, great job! I love it.
EDIT: By the way, I assume you're aware of the fact that your name is Greek for "escape"?