Associate
all encryption can be cracked...havent you seen Mercury Rising?
Point is not to let them intercept the data/information only way to do that is via pigeon-air...m8 of mine swears by his message in bottles scheme but dry land tends to scupper that plan...and the rivers and canals of the UK being so unpredictable nowadays what with the flash floods and whatnot.
All you have to be wary of then is the government Peregrine Falcon