how to detect use of an illegal cipher how can the government tell which encryption method one is using without being able to decode the traffic i e in order to accuse me of using an unauthorized strong encryption technique they would have to take both keys out of escrow run them against my ciphertext and draw a blank i can imagine the ciphertext exhibiting certain statistical characteristics that might give a clue as to the encryption technique used but not enough to give a handle for diferential cryptoanalysis however superencipherment or some other scheme that shapes the percieved properties of my ciphertext could thwart this
