[GreenKeys] somewhat OT: the last rotor crypto machine

[Duncan Brown]

Thanks, Keith! I had not heard of that model.

Not too "off topic", as Teletype Corp. made a lot of the US military 
encryption machines in the 1940s & 1950s.

At the AWA Museum, we have a rotor machine that came from the Teletype 
Corp. Museum. The tag on the unit said "experimental", so I assumed it 
was a prototype of some sort that never went anywhere, since I had never 
seen anything like it.

But looking at pictures at the (NSA) National Cryptologic Museum, our 
unit looks like a M-228 or TSEC/KW-2, but with the addition of a 5-bit 
tape reader. In further digging around on the NCM website, 
https://5099.sydneyplus.com/final/Portal/Default.aspx?lang=en-US , I 
found that they have what looks like a production version of the 
prototype that we have (Item ID 2008.0915.1011).

I have emailed the NCM a few times to get more information on this unit, 
but never heard back from them.  Does anyone have a connection at the NCM?

Thanks,

Duncan Brown, K2OEQ
USASA    31J30

Antique Wireless Assoc. Museum,
   Asst. Curator, Commercial Equipment
(also chief TTY op & repairman)

www.antiquewireless.org






On 03-Sep-21 17:38, Keith Lueck wrote:
> I know there's at least some interest in cryptography on the list.  
> This story also happens to be about restoring an early-60's 
> electromechanical machine - something most of us are quite familiar 
> with... ;-)
>
> The Scandalous History of the Last Rotor Cipher Machine 
> <https://spectrum.ieee.org/the-scandalous-history-of-the-last-rotor-cipher-machine#toggle-gdpr>
>
>
> 	
>
>
> 	
>
>
>     The Scandalous History of the Last Rotor Cipher Machine
>
> How this gadget figured in the shady Rubicon spy case
>
> <https://spectrum.ieee.org/the-scandalous-history-of-the-last-rotor-cipher-machine#toggle-gdpr>
>
>
>
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