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About: Cyclometer     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatPolishInventions, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatCryptographicAttacksyago:Ability105616246yago:Abstraction100002137yago:Act100030358yago:Activity100407535yago:Attack100972621yago:Cognition100023271yago:Creativity105624700yago:Event100029378yago:Invention105633385yago:Operation100955060yago:PsychologicalFeature100023100yago:YagoPermanentlyLocatedEntitydeviceyago:WikicatPolishInventions New Facet based on Instances of this Class

The cyclometer was a cryptologic device designed, "probably in 1934 or 1935," by Marian Rejewski of the Polish Cipher Bureau's German section (BS-4) to facilitate decryption of German Enigma ciphertext. The original machines are believed to have been destroyed shortly before the German invasion of Poland that launched the Second World War, to prevent the Germans learning that their cipher had been broken. Using drawings made by Rejewski, Hal Evans and Tim Flack at the Department of Engineering, University of Cambridge, in 2019 constructed a working version of the cyclometer.