02-07-2025 Enigma Challenge Yingjie Wang from China is the 91st to complete the challenge.
19-06-2025 Crypto News Papers from British mathematician, codebreaker and computer pioneer Alan Turing auctioned.

08-06-2025 Elite Box Challenge George Lasry from Israel is the fourth to solve one Elite Box.
08-06-2025 About the Website Improved info for adjusting screen size and details English en Nederlands (Dutch) translation.
14-05-2025 KL-7 Tech & History Expanded text re-entry principle cipher unit and updated drawing.
11-05-2025 Enigma Challenge Raphael Amhof and Andy Huynh (Tirol & Switzerland) the 90st to complet the challenge.

07-05-2025 Articles History of the TSEC/KL-7 ADONIS & POLLUX updated Version 4.2
17-03-2025 Operation Tinker Bell Johnny Cheung from Hong Kong is the 31st to complete the operation.
04-03-2025 Enigma Challenge Diego Varela Penas from Spain is the 89th to complete the challenge.
27-02-2025 Enigma Challenge Florin Zuberbühler from Switzerland is the 88th to complete the challenge.

18-02-2025 SIGINT Chatter 20 Years of Cryptologic Challenges, overview and statistics.
29-01-2025 Operation Tinker Bell Steve Baggett is the 30th to complete the operation.
22-01-2025 KL-7 Tech & History Added CIA sanitized copies Joseph Helmich spy case.
18-01-2025 Enigma Challenge José Luis Domínguez from Spain is the 87th to complete the challenge.

28-12-2024 Operation Tinker Bell Lexicon page added and more pics and links on Comms page.
09-12-2024 SIGINT Chatter Podcast Nuggets 11 - Cold War Dominance & Secrets Area 51.
04-12-2024 Elite Box Challenge Magnus Ekhall from Sweden the first to crack two Elite Boxes.
21-11-2024 Enigma Challenge Michael Galambos from Hungary is the 86th to complete the challenge.

20-11-2024 Enigma Challenge Klemen Zmahar from Slovenia is the 85th to complete the challenge.
05-11-2024 Crypto News Enigma Touch digital simulator presented on e-basteln website.
30-10-2024 Operation Tinker Belll The crypto spy adventure has moved to this website.
18-10-2024 Crypto - A Brief History Page rearranged and added more details

02-10-2024 Crypto News Added page with news on crypto, machines and its history.
27-08-2024 KL-7 Tech & History Story U.K. Electronics Tech on OTT and KL-7 in NATO added.
19-08-2024 KL-7 Tech & History Story KL-7 COMSEC & Tech Support in Vietnam added.
16-08-2024 KL-7 Tech & History Companies of research and production KL-7 rotors added.

31-07-2024 KL-7 Tech & History Allocation figures of KL-7 to NATO command and countries.
21-06-2024 Operation Tinker Belll Eli Schwarz from the U.S. is the 29th to completed the operation.
21-06-2024 Enigma Challenge Jens Böltzing from Germany is the 84th to complete the challenge.
06-06-2024 SIGINT Chatter Martin Gillow's Virtual Colossus and other crypto machines.

28-05-2024 KL-7 Tech & History more details on the electron tubes and added internal links.
11-04-2024 Crypto's Cast Securing Government Messages after WW2 by Marten Oberman.
28-03-2024 Crypto's Cast Fritz Menzer and the Schlüsselgerät 41 by Carola Dahlke.
20-02-2024 Operation Tinker Bell Daniel Moldovan is the 28th to complete the operation.

03-02-2024 SIGINT Chatter Podcast Nuggets Episode 10 with five new fascinating interviews.
29-01-2024 SIGINT Chatter Cipher Machines 3D-CT Digitalisation at Deutsche Museum
29-01-2024 Crypto Box Challenge Armin Krauß is the 11th to solve all crypto boxes.
24-01-2024 Operation Tinker Bell Kamen Tolev is the 27th to complete the operation.

05-01-2024 Operation Tinker Bell Steve Pocock is the 26th to complete the operation.
03-01-2024 SIGINT Chatter Anniversary 20 years Cipher Machines and Cryptology.
16-12-2023 Operation Tinker Bell Michael Jones from the United States is the 25th to complete the operation.
14-12-2023 What is Cryptography? Authentication, data integrity and digital signatures added.

23-11-2023 Enigma and Hagelin webpage menus updated. Refresh all relevant pages and css
05-11-2023 Operation Tinker Bell Jan Bayer from the Czech Republic is the 24th to complete the operation.
28-10-2023 Enigma History Information development of different Enigma variants updated.
28-10-2023 Machines Timeline Added more machines and details about Enigma version.

29-09-2023 All Web Pages Images relocated. Refresh all pages to correctly load the images!
22-08-2023 KL-7 Tech & History Details number of contacts and contact problems added.
08-08-2023 KL-7 Tech & History Timeline on development and use of the KL-7 added.
23-07-2023 SIGINT Chatter The First Compiled History of the KL-7, details about its research.

19-07-2023 Operation Tinker Bell Eric Langeveld from The Netherlands is the 23rd to complete the operation.
14-07-2023 KL-7 Tech & History document "History of the TSEC/KL-7" added.
31-05-2023 About the Website Page with info website improved and more details added.
16-04-2023 SIGINT Chatter Crypto Tour icon to discover other crypto related websites.

23-02-2023 SIGINT Chatter Computers and Cryptography, including documentary birth BASIC.
14-02-2023 Main Page Created the Crypto Tour to easily discover other related crypto websites.
08-02-2023 The Crow's Cryptogram Oleksii is the first in 10 years to crack the crow's cryptogram.
04-02-2023 KL-7 Tech & History Document transition Signal Security Agency to Army Security Agency added.

22-01-2023 Operation Tinker Bell Maggie Koo is the 21st to complete Operation Tinker Bell.
18-01-2023 KL-7 Tech & History development KL-7 and its rotors rearranged chronologically
13-01-2023 Operation Tinker Bell Mr. Reis is the 20th person to complete Operation Tinker Bell.
10-01-2023 KL-7 Tech & History Doc request HL-1 tape readers and KLX-7 adaptors by FRG.

08-01-2023 Crypto Box Challenge 10th from 82 participants completed the Crypto Box Challenge.
04-01-2023 KL-7 Tech & History Info and document on development of KL-7 rotors added.
02-01-2023 KL-7 Tech & History more docs an info on security and development US/UK crypto.
29-12-2022 KL-7 Tech & History Added document security assessment US/UK cryptographic equipment.

24-12-2022 KL-7 Tech & History Added info and docs CCM, and BRUTUS vs ADONIS on AFSAM-47.
21-12-2022 SIGINT Chatter Cyber Security Videos from Gary Ruddell's cyber website
09-12-2022 KL-7 Tech & History Added doc NSA COMSEC Material Program AFSAM-7 & 47B
07-12-2022 KL-7 Tech & History Added documents procurement AFSAM-7 by FBI.

05-12-2022 KL-7 Tech & History Added audio samples of KL-7 startup, rotors and enciphering.
30-11-2022 Hagelin Crypto AG Added different ways crypto machines were weakened.
17-11-2022 One-time Pad Added menu to the various sections of the OTP page.
16-11-2022 Enigma at School Olin College website migrated, links interim by Internet Archive.

06-11-2022 SIGINT Chatter The Royal Navy Communications Branch Museum/Library.
30-10-2022 KL-7 Tech & History Added links description and use KL-7 by British Royal Navy.
14-10-2022 KL-7 Tech & History Added motor-generator cross section and generator details.
14-10-2022 KL-7 Tech & History Drawing and text motor drive and timing unit enhanced.

06-10-2022 KL-7 Tech & History Details motor-generator versions and circuit speed control.
24-09-2022 KL-7 Tech & History Added diagram HL-1 tape reader and KLX-7 Keyboard adapter.
24-09-2022 KL-7 Tech & History Explained printing and sequence of characters on print drum.
10-09-2022 KL-7 Tech & History AFSAM-7 (KL-7) in White House Signals Det and Air Force One.

09-09-2022 KL-7 Tech & History Patent conflict Small vs Hagelin and related files in docs section.
03-09-2022 KL-7 Tech & History Patent issues and related files in documents section.
03-09-2022 KL-7 Tech & History Discussions release AFSAM-7 with Friedman, Sinkov, Small et al.
02-08-2022 SIGINT Chatter Joseph Helmich – The KL-7 for Cash Spy Case.

02-08-2022 KL-7 Tech & History FBI operation Hookshot & docs ASA analysis battle at Ia Drang.
27-07-2022 SIGINT Chatter History of the TSEC/KL-7 Documented.
21-07-2022 KL-7 Tech & History NSA doc use KL-7 by South Korea and Nationalist China.
21-07-2022 KL-7 Tech & History Added ASA analysis use of KL-7 by South Vietnamese Army.

21-07-2022 KL-7 Tech & History Added CIA/FBI history & more in CIA/FBI documents section.
19-07-2022 KL-7 Tech & History Added CIA report and FBI letters on AFSAM-7/KL-7.
19-07-2022 Technical Details Enigma Enhanced old wiring diagrams Enigma machine.
05-07-2022 KL-7 Tech & History Added NATO document KL-7 key list restrictions France.

26-05-2022 KL-7 Tech & History Expansion KL-7 in service, graphics and spy case.
26-05-2022 KL-7 Tech & History Crypto strength, compartmentalization vs "in depth" analysis.
02-05-2022 SIGINT Chatter Podcast Nuggets Episode 9 with four amazing interviews.
21-04-2022 Book Review The Third Reich Is Listening: Inside German Codebreaking 1939-45.

10-04-2022 Cold War Signals Added player controls to listen to audio samples.
31-03-2022 All pages Graphical improvements and rearrangements. Refresh pages!
22-03-2022 About this site Added readability tips to enlarge pages and font settings.
15-03-2022 Elite Box Challenge Announcing the Elite Box Challenge will start on March 18.
10-03-2022 KL-7 Tech & History Added several NATO documents related to the KL-7 crypto machine.

10-03-2022 Cipher Machines and Cryptology moved to new domain!
17-02-2022 Copies old website preserved at the Internet Archive.
17-02-2022 OBSOLETE: http://users.telenet.be/d.rijmenants
17-02-2022 OBSOLETE: http://users.telenet.be/d.rijmenants/index.htm
17-02-2022 OBSOLETE: http://users.telenet.be/d.rijmenants/index-nl.htm
01-09-2004 Cipher Machines and Cryptology established.