enigma cipher system

"'You are to report to Station X at Bletchley Park, Buckinghamshire, in four days time . . . That is all you need to know.' This was the terse telegram hundreds of young women throughout the British Isles received in the spring of 1941, as World War II raged. As they arrived at Station X, a sprawling mansion in a state of disrepair surrounded by Spartan-looking huts with little chimneys coughing out thick smoke--these young people had no idea what kind of work they were stepping into. Who had recommended them? Why had they been chosen? Most would never learn all the answers to these questions. Bletchley Park was a well-kept secret during World War II, operating under the code name Station X. The critical work of code-cracking Nazi missives that went on behind its closed doors could determine a victory or loss against Hitler's army. Amidst the brilliant cryptographers, flamboyant debutantes, and absent-minded professors working there, it was teenaged girls who kept Station X running. Some could do advanced math, while others spoke a second language. They ran the unwieldy bombe machines, made sense of wireless sound waves, and sorted the decoded messages. They were expected to excel in their fields and most importantly: know how to keep a secret"--Provided by publisher.

"A nonfiction manuscript for young readers about a group of Allied spies and codebreakers that cracked the Nazis's infamous cypher, allowing them to read secret military messages and turn the tide of World War II"--Provided by publisher.

"The Enigma cipher was supposed to be the German's impenetrable [defense] for its military communications against prying eyes during World War II. This is the . . . story of how the cipher was created, adopted by the Nazis, and finally broken. Dermot Turing, the nephew of the great codebreaker Alan Turing, explores the twists and turns of German encryption efforts from the end of World War I through to Hitler's demise and the great lengths to which the Allies went to break it"--Provided by publisher.

Recounts the true story of how a team of Allied codebreakers, spies, and Navy soldiers broke the Nazi code and helped tip the scales in favor of the Allies during World War II. Profiles the different individuals involved and their contributions. Includes an epilogue, photographs, and a timeline.

Lieutenant Aaron Donovan of the Office of Strategic Services embarks on a dangerous mission to get aboard a damaged German submarine and obtain the newest codebooks for the German Enigma cipher machine.

"A ... biography of famous British mathematician and computer scientist Alan Turing"--.

An introduction to the works of Alan Turing, pioneer of computing and World War II code-breaker. Lectures, scientific papers, top secret wartime material, correspondence, and broadcasts are set in context by the editor.

In a quiet graveyard in rural England a well-dressed man is digging at a tomb. He is careful not to disturb the occupant?s slumbers as he removes a deeply buried package. He recovers the find and drives away. Shortly afterwards, another man also approaches the grave. He, however, is disappointed. This nerve-tingling operation is part of a cat-and-mouse plot played out between the police and the possessor of a rare and valuable Enigma machine that had been stolen from Bletchley Park. This bizarre episode in Bletchley Park?s history is as mysterious as the activities of the wartime codebreakers who worked there. In this gripping detective story Christine Large, Director of Bletchley Park, reveals the theft?s inside story and explains exactly how the person in possession of the machine was caught.

Lieutenant Aaron Donovan of the Office of Strategic Services embarks on a dangerous mission to get aboard a damaged German submarine and obtain the newest codebooks for the German Enigma cipher machine.