24 Apr
2020
24 Apr
'20
4:46 a.m.
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