Tributes have been paid to Second World War Bletchley Park codebreaker Ruth Bourne, who has died at the age of 99. Ms Bourne, who grew up in Birmingham but lived High Barnet in north London, worked as ...

Tributes have been paid to Second World War Bletchley Park codebreaker Ruth Bourne, who has died at the age of 98. Ms Bourne, from High Barnet in north London, worked as a Bombe machine operator and ...

BERLIN (Reuters) - German divers searching the Baltic Sea for discarded fishing nets have stumbled upon a rare Enigma cipher machine used by the Nazi military during World War Two which they believe ...

A rare surviving Enigma machine that almost undid the heroic efforts of the Bletchley Park codebreakers in World War Two is tipped to sell for £100,000. The German machines had three rotors, each with ...

Enigma暗号の解読法については、2次大戦前にポーランドの数学者のMarian Rejewskiが研究し、Bombaというシステムを開発しており、Alan TuringとGordon Welchmanはこの研究をベースにしてBombeというシステムを作った。といっても、理論家の両氏が設計を行ったわけでは ...

Enigmaは3つ、もしくは4つのローターを用いて換字を行う暗号器で、写真の手前のタイプライター状のキーボードに平文を入力すると、その上の文字盤に暗号化された文字が点灯するようになっている。また、逆にキーボードから暗号文を入力すると平文の ...

Bletchley Park was the nerve centre of the code breakers The first phase of a new exhibition complex has opened at the intelligence nerve centre in Buckinghamshire where the Enigma code was cracked.

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