[GreenKeys] Fwd: Re: Interesting images and reading!

[Bill]

In the Navy, we used a KLB-47 crypto machine to produce this code and to 
decypher them. It used rotating drums that were set up with the code for 
the message. Can't remember if it was using the date-time-group or the 
first line of the message or both. (been a looooong time!) I remember 
that it took some time to type in the 5 letter code groups...you had to 
be real accurate...the 47 would then punch a tape and you would have to 
run it off on an ASR to get a copy. Then you had to type it onto a 
message form for distro. What a pain! If you typed the groups in 
wrong...guess what?...had to type them in again. Sometimes it was very 
easy to get lost as to where you were in the message. One knock on the 
crypto room door and you almost always had to start over. What a 
blessing when we switched over to covered broadcast. No more 47's.

Bill Cain

On 1/7/2012 6:26 PM, DR HOUSE wrote:
> Hi Bob,
>
> Five letter code groups were used by just about everyone.  One reason 
> was they got the maximum amount of information across public telegraph 
> networks at the lowest possible cost.  The second reason was that the 
> code groups were meaningless unless you had a current decode table.
> Industry used this as well as the military.  One of the most 
> successful espionage efforts in history was the long standing VENONA 
> operation the Soviet Union used from the 30s to the 70s for their 
> spies to send secret messages to Moscow.  A British intelligence 
> officer and an American mathematician who could think in Russian 
> figured it out or they might still be using it today.  If you get a 
> chance to see SECRETS, LIES, AND ATOMIC SPIES on PBS NOVA watch it. 
>  Our museum helped produce the segment.  If you watch closely you can 
> see my fingers on a M14 strip printer and our executive director's 
> stomach next to an IBM card sorter.  I have a first generation VHS 
> tape sent to me by the director that I need to convert to DVD before 
> the tape turns to noise.  There is also a good book The VENONA PAPERS 
> published by REGNERY
>
> Best,
> Don
> aka TTY MAN
>
>
> On 7 Jan 2012, at 7:32 PM, Robert Laag wrote:
>
> THIS BRINGS UP A SUBJECT FROM THE PAST...YEARS AGO THERE WERE MANY 
> STRONG STATION HEAR HERE ON THE SHORT WAVE FREQS THAT SEEMED TO BE 
> MESSAGE STATIONS...  THEY WOULD TRANSMIT A HEADER IN PLAIN TEXT AND 
> FOR THE MESSAGE CONTENTS IT WOULD BE 5 OR 6 NUMBER UPPER CASE GROUPS 
> SEPARATED BY SPACES FOR THE DURATION OF THE MESSAGE...  LIKE, 65834 
> 48390 66173 19785  AND SO ON...  ANYWAY, THEN HOW DID THE MESSAGE GET 
> UNSCRAMBLED I WONDER???   BOB
>
> --- On *Sat, 1/7/12, DR HOUSE /<k9tty at dls.net 
> <mailto:k9tty at dls.net>>/* wrote:
>
>
>     From: DR HOUSE <k9tty at dls.net <mailto:k9tty at dls.net>>
>     Subject: [GreenKeys] Fwd: Re: Interesting images and reading!
>     To: greenkeys at mailman.qth.net <mailto:greenkeys at mailman.qth.net>
>     Date: Saturday, January 7, 2012, 4:37 PM
>
>     My thanks to Christian for this information...
>
>     Begin forwarded message:
>
>     From: Christian Gauger-Cosgrove <captainkirk359 at gmail.com
>     </mc/compose?to=captainkirk359 at gmail.com>>
>     Date: 7 January 2012 5:59:47 PM CST
>     To: DR HOUSE <k9tty at dls.net </mc/compose?to=k9tty at dls.net>>
>     Subject: Re: [GreenKeys] Interesting images and reading!
>
>     Jerry Proc's site is quite the interesting read, I've browsed it many
>     a time. It's a great reference for various crypto systems. If any one
>     else is interested, John Savard has a good set of pages in his
>     cryptographic compendium on telecipher machines:
>
>     http://www.quadibloc.com/crypto/tele03.htm
>
>     On 7 January 2012 17:21, DR HOUSE <k9tty at dls.net
>     </mc/compose?to=k9tty at dls.net>> wrote:
>     >
>     > <http://jproc.ca/crypto/rockex.html>
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