Card catalog (cryptology)

Polish Cipher Bureau
Biuro Szyfrów
Methods and technology
Locations
Personnel
Deputy Chief
Chief of Radio Intelligence
Chief of German Section
Maksymilian Ciężki
Chief of Russian Section
Jan Graliński
Russian Section cryptologist
Piotr Smoleński
The Enigma cipher machine
Enigma machine
Breaking Enigma
Related

The card catalog, or "catalog of characteristics," in cryptography, was a system designed by Polish Cipher Bureau mathematician-cryptologist Marian Rejewski, and first completed about 1935 or 1936, to facilitate decrypting German Enigma ciphers.[1]

  1. ^ Marian Rejewski, "The Mathematical Solution of the Enigma Cipher," pp. 284–87.