Marian Rejewski Biography and Timeline

Enigma Machine

Is assigned to the Polish Cipher Bureau's Enigma problem and applies mathematical permutation theory to the machine.

Enigma Machine

Reconstructs the internal wiring of the German military Enigma using mathematics and intelligence material.

Enigma Wiring Reconstructed

Uses permutation theory to reconstruct the German Enigma machine's internal wiring.

Mathematical Cryptanalysis of Enigma

Achieves a breakthrough in mechanized cipher analysis before the Second World War.

Enigma Machine

Uses the reconstructed machine and recovered daily settings to read German military Enigma traffic.

Cyclometer

Designs the cyclometer to catalogue Enigma permutation characteristics.

Enigma Key Catalogue Method

Accelerates recovery of daily cipher settings through mechanical calculation.

Enigma Machine

Develops the cyclometer to catalogue Enigma permutation characteristics and accelerate recovery of daily settings.

Enigma Machine

Designs the Polish bomba kryptologiczna to automate part of the search for Enigma daily settings.

Enigma Machine

Adapts Polish methods after Germany adds two extra rotors, greatly increasing possible Enigma rotor orders.

Enigma Machine

Explains the mathematical reconstruction of Enigma and Polish key-recovery methods to allied cryptanalysts.

Role range: 1939-1945

Enigma Machine

Meets Turing in France and discusses Polish Enigma methods after the Cipher Bureau's evacuation.

Role range: 1939-1945