It's a secret!

I think I must be suffering from infantile humour syndrome to find some of these things funny, but having studied a bit about encryption in the not too distant past, this site made me mildly smile uncontrolably.
"Message authentication is also provided. One way would be for the recipient to call the sender on the phone and say something like, "Hey! Did you just send me a blank piece of paper?" And the sender could say something like, "Yes…" and pause, knowingly."

Comments

Womble said…
Aaarrrrgh, memories of the Euler Totient Function! I'd just managed to stop the nightmares :o(