Cryptanalysis of a Kryha Machine

Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 149)


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.


Admissible Pair Conclusion Reason Historical Material Watson Research Yorktown Height 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1983

Authors and Affiliations

  1. 1.Mathematical Sciences DepartmentIBM Thomas J. Watson Research CenterYorktown HeightsUSA

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