> "Passive information" just doesn't have a chance. 
No, Of course not - kindly tell me the plain text of this passive message. 
Xcuzoaidloftzmcvlvq
Like shooting fish in a barrel, eh?  Trivial!
-- Chris "Just as you should not overestimate the security offered by a simple shift encoding using a numeric string, so you should not underestimate the security when you don't know the numeric string and can't be bothered to do frequency analysis"