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Alexander von Kryha and his encryption machines. (English) Zbl 1215.01015

Summary: Alexander von Kryha (1891–1955) dedicated at least 15 years of his life to encryption machines of his own development. His machines competed with the Enigma in the 1920s and with Hagelin’s machines in the 1950s, but they were cryptographically much too weak to succeed. It is the tragedy of Alexander von Kryha that he made a huge effort in marketing his machines, but did not realize that he was dealing with one of the poorest designs ever. In 1955 Kryha committed suicide, while his company went bankrupt.

MSC:

01A60 History of mathematics in the 20th century
94A60 Cryptography

Biographic References:

von Kryha, Alexander
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References:

[1] Kahn D., The Codebreakers (1996)
[2] Deavours C., Machine Cryptography and Modern Cryptanalysis (1985) · Zbl 0905.94003
[3] Heyde G., Illustrirte Wochenzeitung 172 (1929)
[4] Hamel G., Die Kryha-Chiffriermaschinen. Ein Mathematisches Gutachten (1929)
[5] Schmitt J., Organisation Betrieb-Büro 30 (1928)
[6] Schwarte D., Heerestechnik 6 (1928)
[7] Fitz I., Illustrierte Technik für Jedermann (1927)
[8] Küttner I., Wissen und Fortschritt 6 (1928)
[9] DOI: 10.1080/0161-110491892926 · doi:10.1080/0161-110491892926
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