  This paper presents a method of cryptographic key distribution using an
`artificially' noisy channel. This is an important development because, while
it is known that a noisy channel can be used to generate unconditional secrecy,
there are many circumstances in which it is not possible to have a noisy
information exchange, such as in error corrected communication stacks. It is
shown that two legitimate parties can simulate a noisy channel by adding local
noise onto the communication and that the simulated channel has a secrecy
capacity even if the underlying channel does not. A derivation of the secrecy
conditions is presented along with numerical simulations of the channel
function to show that key exchange is feasible.
