من أول من اكتشف كيفية إزالة تشفير جهاز الإنجما ؟
In December 1932, the Bureau provided Rejewski with some German manuals and monthly keys. The material enabled Rejewski to achieve "one of the most important breakthroughs in cryptologic history" by using the theory of permutations and groups to work out the Enigma scrambler wiring.
Rejewski