[HECnet] VMS/RSX Guest accounts

[Paul Koning]

Found it yesterday.  https://www.cl.cam.ac.uk/~rja14/Papers/nato-tempest.pdf <https://www.cl.cam.ac.uk/~rja14/Papers/nato-tempest.pdf>

	paul

> On Apr 23, 2020, at 10:46 PM, Thomas DeBellis <tommytimesharing at gmail.com> wrote:
> 
> Fascinating.  You wouldn't happen to remember that font, would you by any chance?  Or the paper?
> 
> My current revenue generating incarnation is as an ISO, so I'm sure I'd appreciate it.
> 
> On 4/23/20 8:06 PM, Paul Koning wrote:
>> 
>>> On Apr 23, 2020, at 8:01 PM, William Pechter <pechter at gmail.com> wrote:
>>> 
>>> Actually the fun mil-spec VT100 was the Tempest VT100.  Metal case to avoid radiating information into the air and a metal cased VT100 keyboard.
>>> 
>>> Dropped that in my lap only ONCE at the FBI facility I was Field Service for. Ugh.
>>> 
>>> bill
>> One of the strangest crypto / security papers I ever read was from famous cryptologists in England, who designed a font that dramatically cuts emissions from a video monitor.  You could pretty much get TEMPEST compliance simply by downloading that font and using it for your text instead of the stock font.  The magic, as I recall, was soft edges, so the square waveforms typical of a text video signal were smoothed.
>> 
>> 	paul
>> 
>> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sonic.net/pipermail/hecnet-list/attachments/20200424/90a36bf1/attachment.html>