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W. T. Tutte
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William Thomas Tutte was an English and Canadian code breaker and mathematician. During the Second World War, he made a fundamental advance in cryptanalysis of the Lorenz cipher, a major Nazi German c
W. T. Tutte
W. T. Tutte
The Lorenz SZ42 machine with its covers removed. Bletchley Park museum
The Lorenz SZ42 machine with its covers removed. Bletchley Park museum
SZ42 6 wheels lightened
SZ42 6 wheels lightened
Cryptanalysis of the Lorenz cipher
Videos
Cryptanalysis of the Lorenz cipher was the process that enabled the British to read high-level German army messages during World War II. The British Government Code and Cypher School at Bletchley Park
W. T. Tutte
…14 May 1917 – 2 May 2002) was an English and Canadian code breaker and mathematician. During the Second World War, he made a fundamental advance in cryptanalysis of the Lorenz cipher, a major Nazi German cipher system which was used for top-secret communications within the Wehrmacht High Command. The high level, strategic nature of…
Cams on wheels 9 and 10 showing their raised (active) and lowered (inactive) positions. An active cam reversed the value of a bit (•→x and x→•).
Cams on wheels 9 and 10 showing their raised (active) and lowered (inactive) positions. An active cam reversed the value of a bit (•→x and x→•).
A Lorenz SZ42 cipher machine with its covers removed at The National Museum of Computing on Bletchley Park
A Lorenz SZ42 cipher machine with its covers removed at The National Museum of Computing on Bletchley Park
A rebuilt British Tunny at the National Museum of Computing, Bletchley Park. It emulated the functions of the Lorenz SZ40/42, producing printed cleart
A rebuilt British Tunny at the National Museum of Computing, Bletchley Park. It emulated the functions of the Lorenz SZ40/42, producing printed cleartext from ciphertext input.
A Mark 2 Colossus computer. The Wren operators are (left to right) Dorothy Du Boisson and Elsie Booker. The slanted control panel on the left was used
A Mark 2 Colossus computer. The Wren operators are (left to right) Dorothy Du Boisson and Elsie Booker. The slanted control panel on the left was used to set the pin patterns on the Lorenz. The "bedstead" paper tape transport is on the right.