In last evening's reading of Max Hasting's "The Secret War" I read a reference to some Swedish chap called Arne Beurling who cracked the German teleprinter code in 1940.
Google Translate
Dunno if ^^^ will work but anyway.
Well there's a thing.
And no one knows how he did it.
Codebreakers: Arne Beurling and the Swedish Crypto Program during World War II
Looking back at Sweden'''s super-code-cracker | WIRED
Google Translate
Dunno if ^^^ will work but anyway.
During the Second World War, in the summer of 1940, Beurling succeeded with his perhaps greatest achievement: breaking the German crypto machine G-printer . [ 9 ]
This effort succeeded Beurling in two weeks with the help of pen and paper and only one day's collected messages.
Germany during the World War lent Swedish telecommunications lines for teleprinter traffic to its troops in Norway and the Swedish military used this for interception and managed to collect several hundred thousand messages for several years.
Through Beurling's efforts, they were able to produce their own crypto machines with the same function, which helped the Swedish government gain advance knowledge of many important events during the war, including Operation Barbarossa , Germany's attack on the Soviet Union .
His collected writings (mathematical essays) were published posthumously in 1989.
This effort succeeded Beurling in two weeks with the help of pen and paper and only one day's collected messages.
Germany during the World War lent Swedish telecommunications lines for teleprinter traffic to its troops in Norway and the Swedish military used this for interception and managed to collect several hundred thousand messages for several years.
Through Beurling's efforts, they were able to produce their own crypto machines with the same function, which helped the Swedish government gain advance knowledge of many important events during the war, including Operation Barbarossa , Germany's attack on the Soviet Union .
His collected writings (mathematical essays) were published posthumously in 1989.
And no one knows how he did it.
Codebreakers: Arne Beurling and the Swedish Crypto Program during World War II
Looking back at Sweden'''s super-code-cracker | WIRED
won't be buying that again and there's at least one other can of it in the cupboard) with multiple slices of Morrisons sunflower and pumpkin seed bread (slightly stale but it was 22p per loaf), bramble jelly sandwich on same, fruit corner thing, 0.91 pints of good Glengettie tea.
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