[HECnet] VMS/RSX Guest accounts

[Thomas DeBellis]

Thank you; what an interesting read, particularly the part where some 
users thought the Tempest soft fonts were more readable!

On 4/24/20 10:15 AM, Paul Koning wrote:
> Found it yesterday. 
> 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 <mailto: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 
>>>> <mailto: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
>>>
>>>
>
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