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Codebreakers: Arne Beurling and the Swedish Crypto Program During World War II

Table of Contents

Part 1

• An 18th century cipher
• The world's first ciphering machine
• Damm, Hagelin, and Gyldén
• Radio signal interception and cryptanalysis before 1939
• War
• Enter Arne Beurling
• The Russian Baltic Navy
• Mysterious signals
• Teleprinters
• Beurling's Analysis
• The G-Schreiber and the apps
• Continued cryptanalysis
• Exit Gyldén--but Beurling comes back
• The double transposition
• Operation Barbarossa
• The work place
• Contents
• The birth of the FRA
• Brilliant results--despite everything
• Downturn and leakage
• The Red Army and the Arctic Sea
• The doubly enciphered Russian code
• Stella Polaris
• Gradual loss of German traffic
• Borelius pays a visit to the Germans
• Information--but of what value?
• Norway
• The last years of the war
• The Swedes' own crypto systems
• Arne Beurling 1943-1945

Part 2

• Arne Beurling
• Through the eyes of a woman
• A magical friendship
• Sources
• Index of names

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