To: John Young
Cc: [EMAIL PROTECTED]
Subject: Re: NONSTOP Crypto Query
On Fri, 12 Jan 2001, John Young wrote:
Wright also describes the use of supersensitive microphones
to pick up the daily setting of rotors on cryptomachines of the
time, in particular the Hagelins made by CryptoAG
One interesting question is exactly how strong radio frequency
illumination could cause compromise of information being processed by
electronic equipment. I have an idea for a mechanism whereby such
illumination could induce generation of harmonic and beat frequencies
that are modulated by
[A quick contemplation of the wavelength of the sounds in question
would put an end to that speculation I suspect. --Perry]
I know this has been somewhat done to death, but there's a nice
comparison: GPS positioning using carrier phase tracking is equivalent
(well, it's reversed - clicks come
Joel McNamara first told me about NONSTOP and its commonly
associated classified codeword, HIJACK, both somehow related
to Tempest.
When you do a search on either of them you get hundreds
(or 1000s) of hits for the generic terms "non-stop" and "hi-jack"
but few entries for the codewords, and
At 01:37 PM 1/12/01 -0800, Ray Dillinger wrote:
Hmmm. That sounds like a trick that could be brought up to
date. If you get two sensitive microphones in a room, you
[A quick contemplation of the wavelength of the sounds in question
would put an end to that speculation I suspect. --Perry]
Ray Dillinger wrote:
If you get two sensitive microphones in a room, you
should be able to do interferometry to get the exact locations
on a keyboard of keystrokes from the sound of someone typing.
Interesting. Probably not the easiest way to snoop, but you might be
driven to it.
I
Ray Dillinger wrote:
On Fri, 12 Jan 2001, John Young wrote:
Wright also describes the use of supersensitive microphones
to pick up the daily setting of rotors on cryptomachines of the
time, in particular the Hagelins made by CryptoAG.
Hmmm. That sounds like a trick that could be
At 01:30 AM 1/13/2001 +, Ben Laurie wrote:
Hmm. 6 kHz has a wavelength of 5 cm. I would guess you can easily get
resolution to 1/10 of a wavelength under ideal conditions. Which is .5
cm, which is half the size of a key, more or less.
You don't have to locate the exact key to save a lot of
In message [EMAIL PROTECTED], John Young write
s:
This loops back to NONSTOP and the question of what may
be the signatures and compromising emanations of today's
cryptosystems which reveal information in ways that go beyond
known sniffers -- indeed, that known sniffers may divertingly
On Fri, 12 Jan 2001, John Young wrote:
Wright also describes the use of supersensitive microphones
to pick up the daily setting of rotors on cryptomachines of the
time, in particular the Hagelins made by CryptoAG.
Hmmm. That sounds like a trick that could be brought up to
date. If you get
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