#ADFGVX
There has been pretty widespread reporting that AI recently broke a previously unsolved Enigma message from WWII. Turns out that an AI system has also solved a WWI-era German message encrypted with the fiendishly difficult (for the time) ADFGVX cipher. French codebreaker Georges Painvin...
World War I Coded Message Appears Cracked, Finally
When you think of wartime cryptography, you probably think of World War II and Enigma, although there were other famous codes used during that war. But in fact, there have been codes used through w…
hackaday.com
September 27, 2026 at 7:01 PM
...with modest help from the Americans made some solid progress against this cipher during the war, though ultimately only a few days of German traffic could be recovered. Lots of ADFGVX messages remained unsolved. Now there is one fewer.

The topic is discussed in more detail here.
GPT-6 Astra Solves a WWI German Radio Cipher
Scienceblogs.de, a German science blogging portal, includes a relatively famous list of 50 unsolved ciphers, which range from cryptograms published by serial killers to the famous Voynich manuscript.
www.prinzai.com
September 27, 2026 at 7:03 PM
【速報】GPT-6 Astra、未解読の大戦暗号を連続解読
1941年のエニグマ電文(行軍指示)に続き、1918年のADFGVX暗号も解き、セバストポリ周辺の連合軍艦隊の動きを明らかにした。
September 19, 2026 at 9:49 PM
5. Modern Cryptography (20th Century)

World War I:

• Cipher Machines:

• Mechanical ciphers like the German ADFGVX cipher became prominent.

• Codebreaking:

• Nations invested heavily in deciphering enemy communications.
November 30, 2024 at 9:16 AM
Fixed a few issues in ADFGVX & Square ciphers, some performance improvement and fix a bad memory usage.

Here is v0.6 of old-crypto-rs.

https://github.com/keltia/old-crypto-rs/releases/tag/v0.6.0

#rust #oldcrypto #penandpaper #cryptography
March 17, 2026 at 2:02 PM
그와별게로 암호체계에 관해서는 진지하게 생각해 보시는 편도 좋겠네요.
방금 막 음성기호는 암호체계가 아니다 라고 말하고 온 참입니다만.
그럼에도 암호문을 무선통신으로 전해야할 때가 있기때문에 그리 멀지는 않은 신호체계죠.
1차 대전기 독일군의 ADFGVX라는 암호체계가 있는데요 이런걸 미리 짜놨다가 내가 무슨 마법을 사용하는지 알지 못하게 하는 법도 제법 멋질것 같습니다.
March 21, 2026 at 11:22 AM
#HaceDiezAños Códigos secretos en la primera guerra mundial, en el Cuaderno de Cultura Científica @cccientifica.bsky.social, sobre algunos cifrados clásicos, incluido el cifrado ADFGVX, que jugó un papel muy importante en la primera guerra mundial culturacientifica.com/2015/03/11/c...
Códigos secretos en la primera guerra mundial — Cuaderno de Cultura Científica
Códigos secretos en la primera guerra mundial
culturacientifica.com
March 12, 2025 at 7:15 PM
Le message appartenait à une liste d'une vingtaine de cryptogrammes non résolus, chiffrés avec la méthode ADFGVX, un système de cryptage militaire utilisé par l'Allemagne dans les derniers mois de la Première Guerre mondiale www.lesnumeriques.com/intelligence...
September 23, 2026 at 5:14 PM
"108년 동안 차가운 침묵 속에 갇혀 있던 1차 세계대전 비밀 무선 메시지가 열렸다"… AI가 깬 암호학계의 100년 고정관념

인간 해독가들이 잘못된 통념과 데이터 유실로 포기했던 난제! 2중 전치 암호 체계인 ADFGVX의 봉인을 해제한 최신 AI의 통찰.
www.aipostkorea.com/news/article...
#1차세계대전비밀암호해독 #GPT6아스트라활용 #테크이슈 #프린츠개발자성과 #ADGVX암호해체 #인공지능암호학성과
"인간이 포기한 108년 전 비밀 암호"…GPT-6 아스트라, 1차 대전 독일군 무선 풀었다
“역사적 선입견과 유실된 데이터라는 한계를 넘어, AI가 패턴 추론과 외부 데이터 교차 검증을 연계해 숨겨진 진실을 찾아내는 암호학의 새로운 이정표를 세웠습니다.” AI포스트 핵심 요약 ✅ ['GPT-6 아스트라' 활용해 1차 세계대전 독일군 비밀 암호 2건 해독 성공] '미해결 암호
www.aipostkorea.com
September 20, 2026 at 7:47 AM
#GPT6 Astra successfully decoded a #WWI German #radiocipher using the #ADFGVX method. The cipher, transmitted on 27 November 1918, was previously unsolved despite the availability of known keys. Astra hypothesised that the key #TRUPPENVERSCHIEBUNG was used starting 9 December 1918, explaining the…
tech news ᳇ eicker.news (@technews@eicker.news)
#GPT6 Astra successfully decoded a #WWI German #radiocipher using the #ADFGVX method. The cipher, transmitted on 27 November 1918, was previously unsolved despite the availability of known keys. Astra hypothesised that the key #TRUPPENVERSCHIEBUNG was used starting 9 December 1918, explaining the previous lack of success. https://www.prinzai.com/p/gpt-6-astra-solves-a-wwi-german-radio?eicker.news #tech #news #ainews
eicker.news
September 22, 2026 at 9:25 PM
OpenAI’s GPT-6 Astra has successfully cracked a 170-symbol, Word War I, German radio message that was sent on November 27th 1918. The message was encrypted with ADFGVX cypher. Cybernews
September 21, 2026 at 4:28 PM
‎🤖🔐 GPT-6 Astra habría descifrado un mensaje de radio alemán de la Primera Guerra Mundial que llevaba más de un siglo sin ser resuelto.
‎
‎El mensaje, enviado en 1918 y cifrado con el sistema ADFGVX, formaba parte de una lista de 50 códigos que seguían sin descifrar.
September 20, 2026 at 6:24 PM
Three things stand out.

First: ADFGVX is a multi-step reasoning problem — recover the transposition, derive the key, rebuild the table. Not next-token fluency.
September 19, 2026 at 2:00 PM
A week before the Armistice, a German operator keyed a radio message in ADFGVX — the 1918 field cipher. It sat unsolved for over a century, on a famous list of 50 unbroken cryptograms.
September 19, 2026 at 2:00 PM
GPT-6 Astra, 제1차 세계대전 독일 무선 암호 해독

GPT-6 Astra 가 1918년 11월 27일 송신된 독일의 ADFGVX 무선 암호문 을 해독함. 다만 최초 해독인지는 확인되지 않았으며, 알려진 선행 해독 사례가 없다는 단서가 있음 복원한 메시지는 영국 순양함의 세바스토폴 입항 과 26일 연합국 함대...
GPT-6 Astra, 제1차 세계대전 독일 무선 암호 해독
GPT-6 Astra 가 1918년 11월 27일 송신된 독일의 ADFGVX 무선 암호문 을 해독함. 다만 최초 해독인지는 확인되지 않았으며, 알려진 선행 해독 사례가 없다는 단서가 있음 복원한 메시지는 영국 순양함의 세바스토폴 입항 과 26일 연합국 함대...
news.hada.io
September 19, 2026 at 2:00 PM
Developer Prinz used GPT-6 Astra to crack a 108-year-old unsolved German WWI radio cipher detailing Allied fleet movements. Astra beat the ADFGVX code by ignoring a flawed assumption about the encryption key. It's proof that human bias kept this locked for a century.
OpenAI’s GPT-6 Astra Cracks 108-Year-Old Unsolved WWI German Cipher
A developer used OpenAI's GPT-6 Astra to decipher a 108-year-old unsolved WWI German radio message.
zubiqo.com
September 19, 2026 at 3:14 PM
The GPT-6 Astra model successfully decrypted a WWI German ADFGVX radio message from 1918 that had previously eluded experts. By using the key TRUPPENVERSCHIEBUNG, the AI revealed details about an English cruiser's arrival in Sevastopol, confirming historical logs.
GPT-6 Astra Solves a WWI German Radio Cipher (171)
Scienceblogs.de, a German science blogging portal, includes a relatively famous list of 50 unsolved ciphers, which range from cryptograms published by serial killers to the famous Voynich manuscript.
news.ycombinator.com
September 19, 2026 at 1:09 PM
「100年前から公開されていたもの」——GPT-6 Astraが解いた108年前の暗号、鍵の正体 – shiritomo

https://www.yayafa.com/2891441/

1918年11月27日に打たれた一通…
「100年前から公開されていたもの」——GPT-6 Astraが解いた108年前の暗号、鍵の正体 – shiritomo - YAYAFA
1918年11月27日に打たれた一通のドイツ軍の暗号電文が、108年のあいだ誰にも解けないまま歴史資料の中に眠っていました。使われていたのは「ADFGVX暗号」と呼ばれる方式で、暗号表と鍵語の両方が揃わなければ復元できない仕組みです。
www.yayafa.com
September 20, 2026 at 11:00 AM