[GreenKeys] Teletype and TEMPEST info

[Nick England]

NSA's David Boak lectures are interesting reading - more of them at
http://www.governmentattic.org/18docs/Hist_US_COMSEC_Boak_NSA_1973u.pdf

cheers,
Nick

Nick England K4NYW
www.navy-radio.com

On Sun, Oct 23, 2016 at 11:00 AM, Duncan Brown <duncanancy at earthlink.net>
wrote:

> I had read the NSA TEMPEST report mentioned below before. But I had not
> seen the second one, "NSA TEMPEST History Lecture" <
> http://www.navy-radio.com/crypto/TEMPEST_Boak_NSA_1973.pdf>
> listed on Nick's TEMPEST site, http://www.navy-radio.com/tty-tempest.htm
> Declassified from "SECRET NOFORN" without too many redactions.
>
> It starts out with some of the same examples as the "Background Article"
> but then goes into a lot of detail on the history of TEMPEST.  Good reading
> for anyone interested in TEMPEST. (The Flexowriter was a _terrible_ emitter
> of signals!)
>
> Have fun,
>
> Duncan, K2OEQ
> USASA 31J30
>
> On 23-Oct-16 09:36, Duncan Brown wrote:
>
>> Ed,
>>
>> Emanations from crypto gear was first noticed by Bell Labs during WWII.
>> The signals were showing up on test equipment elsewhere in the lab!
>>
>> See this declassified report from NSA:
>> https://www.nsa.gov/news-features/declassified-documents/
>> cryptologic-spectrum/assets/files/tempest.pdf
>> (the URL is also on Nick's new TEMPEST page)
>>
>> Have fun,
>>
>> Duncan
>> K2OEQ
>>
>>
>
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