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I am no expert on one-time pads; but what I have learned is:
The "one time" of one time pad relates to the just the encryptand
decrypt processes. Once you have encrypted your message [crypt-message]
the first of the matching pair of pads is destroyed. Now only the
intended recipient with his pad can read it.
Due to the hit and miss nature of HF radio propagation and reception;
presuming cheap unobtrusive SW radio receiver; it would be sensible to
broadcast the crypt-message a number of times, probably on different
frequencies and at different times of the day to be certain the intended
recipient gets it. But remember you do not have to use radio to deliver
the crypt-message, maybe a letter will do!
Having got the crypt-message, the recipient using the matching pad can
now decrypt the message after which the second pad is destroyed
(normally burnt).
Normally the pads are made from acetate or some other fast burning
material that leaves no ash. In theory the one-time pad system is
unbreakable if use properly. A classic how not to do it was the Cubans
who implemented it in software on a floppy-disk thus leaving residual
data on the PC hard drive for the FBI and others to find!
The other gotcha iscreating pads with non-random numbers. The art of
one-time-pad generation is another big subject cost the world's spooks
big bucks.
hope that helps, Dave
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