The message was written in 'cipher'. [=the message was coded]
She was nothing more than a 'cipher'.
a 'cipher' that can't be decoded
(..) The computer can't detect a pattern, but I'm sure it's code. Why is that, General? Ever just know something, Dr. Nash? Constantly. We've developed several ciphers. If you'd like to review our preliminary data? - Doctor? - ---. - -... (..)2001 A Beautiful Mind
(..) Why, yes, John, it is. I imagine you're getting quite used to miscalculation. I've read your preprints... ...both of them. The one on Nazi ciphers... ...and the other one on nonlinear equations... ...and I am supremely confident that there is not a single seminal... ...or innovative idea (..)2001 A Beautiful Mind