Lorenz SZ40, SZ42a and SZ42b were German rotor stream cipher machines used by the German Army during World War II. They were developed by C. Lorenz AG...

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...

role to the Lorenz cipher machines in the German Army. The British cryptanalysts of Bletchley Park codenamed the German teleprinter ciphers Fish, with...

Cryptanalysis of the Lorenz cipher, was eventually called Ultra. A similar break into the most secure Japanese diplomatic cipher, designated Purple by...

Several systems were used, principally the Lorenz SZ 40/42 (Tunny) and Geheimfernschreiber (Sturgeon). These cipher systems were cryptanalysed, particularly...

engineering. (And on occasion, ciphers have been broken through pure deduction; for example, the German Lorenz cipher and the Japanese Purple code, and...

communications of the Axis Powers – most importantly the German Enigma and Lorenz ciphers. The GC&CS team of codebreakers included Alan Turing, Harry Golombek...

codebreakers in the years 1943–1945 to help in the cryptanalysis of the Lorenz cipher. Colossus used thermionic valves (vacuum tubes) to perform Boolean and...

transmissions were known as Fish at Bletchley Park. (See Lorenz cipher, Cryptanalysis of the Lorenz cipher.) The German army used Fish for communications between...

level. These were the Enigma machine, the teleprinter cipher attachment (Lorenz cipher), and the cipher teleprinter the Siemens and Halske T52, (Siemens T-43)...