"unbreakable"?
Nope. It's breakable by anyone who has the key: and like any other
secret key system, there's a fatal repudiability to that. Because,
in this scenario, you have the key (pad), I have the key (pad),
AND ELEMENTRIX has the KEY. They sold it to you after all :-)
The fundamental problem with the 'absolute security' of one-time-pad
is (1) distributing the pad and (2) not reusing the pad. Then, when it
does work, all you get is a secret channel, not a trusted one. I can't
prove you sent me or didn't send me any message on that channel: it's
ABSOLUTELY secret. Can't build e-commerce on that, only on the PUBLIC
trust of PK signatures, etc.
(1) means that I can't scale to many users: I have to have a
prearranged trust relationship. And I need to ship around O(protected
bits) size material around the world -- no compression here! (and of
course, I can't send the pad electronically: it has to be out-of-band
on some entriely different medium, like CD-ROM) If I fail to provide
enough of (1), desperate WW2 era Soviet agents will start doing (2),
which is how NSA humans cracked Venona material (over decades!).
Show me the trust! In this case, that slogan leads you down the
gutter path to find that every customer has to trust Elementrix
absolutely and infintely. And that's above and beyond trusting them
to get the *technology* of pad generation right, instead of using some
'pseudroandom generator' :-)
Yeah, I'd bet a million dollars on their system. A million dollars
they'll vanish without a trace. Losers.
Rohit