ENIGMA Encrypted Broadcast on 22 July 2023

akula65 · 07-02-23, 11:22 AM

Source: https://myemail.constantcontact.com/...id=xj_56JJrX7o

Quote:

ANNOUNCEMENT: ENIGMA Encrypted Broadcast

You might recall that last year KPH broadcast in Morse Code and Teletype format a message encrypted using the notorious World War II German encryption device known as the ENIGMA machine. The response to that broadcast was so overwhelmingly positive that we are planning on doing this again. Now, here comes the MRHS Cryptography Department Manager, Kevin McGrath/KM with details!

ATTENTION ALL INTERCEPT OPERATORS!

Crypto Transmission from KPH

The MRHS in cooperation with our good friends at the Cipher History Museum will send a coded message in 5-letter groups via the facilities of coast station KPH on Saturday July 22, 2023. The message will be encrypted using the famous Enigma code machine.

The Enigma was the Germans' most sophisticated coding machine for securely transmitting command and control messages via radio communications in WWII. It was considered so secure that it was used to encipher the most top-secret of messages.

All KPH listeners are invited to try their hand at receiving and decrypting the message. Certificates will be awarded for proof of successful decode, first to decode, and use of original or replica hardware.

You say your Enigma code machine has gotten a bit rusty? No problem, MRHS has you covered! Software simulations exist for the Enigma code machine. Click Here for an easy-to-use Enigma simulator. It is web-based, so no download is necessary.

For additional information on the Enigma please see Ralph Simpsons' Cipher Museum History site.

Crypto broadcast date, time and formats
The crypto broadcast will commence at 2000Z (1300 Pacific) on 22 July 2023 on all KPH CW and RTTY frequencies (in kc): 426 (IF in service, after an announcement on 500), 6477.5, 8642.0, 12808.5, 17016.8, 22477.5 . Upon completion of the CW transmissions, the broadcast will be repeated on all KPH RTTY frequencies. The RTTY transmission will be 170cps shift Baudot, 45 baud. The frequencies are (in kc): 6324.5, 8427.0 and 12585.5

Further Information
Full details will be announced in two weeks on the MRHS website and a Special Bulletin to all newsletter subscribers. For more information, or questions about the KPH cipher broadcast send email to: crypto@radiomarine.org.

akula65 · 07-18-23, 05:32 PM

Additional event information has been posted here: https://www.radiomarine.org/mrhs-events

akula65 · 07-21-23, 10:32 AM

If you want to participate in this event. but you do not have a shortwave receiver, then you can make use of a worldwide network of Software Defined Radio (SDR) receivers through your browser. A list of receivers can be found here: http://websdr.org/.
A FAQ for use of the receivers is available here: http://www.websdr.org/faq.html.

You can practice tuning CW (Morse Code) signals on the amateur radio bands. The American Radio Relay League has frequency allocation charts to help you find the CW segments in the High Frequency (HF) bands. These segments are marked for CW or RTTY and Data use. Most countries have essentially the same allocations for these bands, but you could also use other national radio organization information. ARRL frequency charts are available here: http://www.arrl.org/graphical-frequency-allocations.

akula65 · 07-26-23, 05:24 PM

For those who could not participate, here is the transmission as I copied it. Note that the message was sent twice and there are differences in what I copied between the first and second version due to fading. If you want to try to decode the message, USE THE SECOND VERSION as it is correct.

Quote:

KPH Crypto Message, 2000 UTC
Date: 22 July 2023

EPH KPH KPH CQ CQ CQ DE KPH KPH KPH
CRYPTO MESSAGE FOLLOWS BT
DONITZ FR LOOKS 2013Z OKTOBER 7 BT
100 BT
DBK WS BT
EVJMZ VISFP CVCBJ SNQDF CVNPL CNFFO EVSLH YOSKU EUWPB QLRGR XRGDW OFQCQ
KZRJT AAOLG DVSGM GJFRR OZLRC ANKRI NTMCG WVLRC
CQ CQ CQ DE KPH KPH KPH
CQ CQ CQ DE KPH KPH KPH
CRYPTO MESSAGE FOLLOWS BT
DONITZ FR LOOKS 2013Z OKTOBER 7 BT
100 BT
DBK WSE BT
EVJMZ VISFP CVCBJ SNQDF CVNPL CNFFO EVSLH YOSKU EUWPB QLRGR XRGDW OFQCQ
KZRJT AUOLG DVSGM GJFRR OZLRC ANKRI NNTCG WVLRC
AR DE KPH KPH KPH

Remember to use the decoding procedure dictated in the online resources (i.e. just feeding the message into ENIGMA won't get the proper decode). I used the online ENIGMA here: https://cryptii.com/pipes/enigma-machine

Good luck!

akula65 · 08-01-23, 03:16 PM

After Action Report (SPOILERS!!!) has been posted here: https://www.radiomarine.org/mrhs-events

07-18-23, 05:32 PM	#2
akula65 A-ganger Join Date: Nov 2009 Posts: 76 Downloads: 23 Uploads: 0	Additional event information has been posted here: https://www.radiomarine.org/mrhs-events

07-21-23, 10:32 AM	#3
akula65 A-ganger Join Date: Nov 2009 Posts: 76 Downloads: 23 Uploads: 0	If you want to participate in this event. but you do not have a shortwave receiver, then you can make use of a worldwide network of Software Defined Radio (SDR) receivers through your browser. A list of receivers can be found here: http://websdr.org/. A FAQ for use of the receivers is available here: http://www.websdr.org/faq.html. You can practice tuning CW (Morse Code) signals on the amateur radio bands. The American Radio Relay League has frequency allocation charts to help you find the CW segments in the High Frequency (HF) bands. These segments are marked for CW or RTTY and Data use. Most countries have essentially the same allocations for these bands, but you could also use other national radio organization information. ARRL frequency charts are available here: http://www.arrl.org/graphical-frequency-allocations.

08-01-23, 03:16 PM	#5
akula65 A-ganger Join Date: Nov 2009 Posts: 76 Downloads: 23 Uploads: 0	After Action Report (SPOILERS!!!) has been posted here: https://www.radiomarine.org/mrhs-events