Abstract
In the early part of this century, a mechanical “ciphering machine” was invented by a German engineer, Alexander von Kryha of Berlin. The Kryha-Ciphering-Machine received both the State Prize from the Prussian Ministry of the Interior at the 1926 Police Fair (Berlin) and a Diploma in 1928 from Dr. Konrad Adenauer at the Internaltional Press Exhibition (Cologne). George Hamel, who was to become famous for his work in set theory, published an analysis in 1927 of the size of the key space, which was quoted extensively by “Internationale Kryha-Maschinen-Gelleschaft” (Hamburg) to infer the unbreakability of the Kryha machines.
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© 1983 Springer-Verlag Berlin Heidelberg
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Konheim, A.G. (1983). Cryptanalysis of a Kryha Machine. In: Beth, T. (eds) Cryptography. EUROCRYPT 1982. Lecture Notes in Computer Science, vol 149. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-39466-4_4
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DOI: https://doi.org/10.1007/3-540-39466-4_4
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