Card catalog (cryptology)
| Methods and technology |
|---|
| Locations |
| Personnel |
|
Chief
Gwido Langer German Section cryptologists Wiktor Michałowski
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.