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

Map; The world's first ciphering machine; Damm, Hagelin, and Gylden; 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 Gylden-but Beurling comes back; The douple 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; Through the eyes of a woman; A magical friendship; Sources; Index of names; Map; The world's first ciphering machine; Damm, Hagelin, and Gylden; 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 Gylden-but Beurling comes back; The douple 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; Through the eyes of a woman; A magical friendship; Sources; Index of names; Map; The world's first ciphering machine; Damm, Hagelin, and Gylden; 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 Gylden-but Beurling comes back; The douple 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; Through the eyes of a woman; A magical friendship; Sources; Index of names; Map; The world's first ciphering machine; Damm, Hagelin, and Gylden; 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 Gylden-but Beurling comes back; The douple 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; Through the eyes of a woman; A magical friendship; Sources; Index of names; Map; The world's first ciphering machine; Damm, Hagelin, and Gylden; 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 Gylden-but Beurling comes back; The douple 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 v

(Oxford)