
Bomba (cryptography)
Polish decryption device

Polish decryption device
The bomba, or bomba kryptologiczna (Polish for "bomb" or "cryptologic bomb"), was a special-purpose machine designed around October 1938 by Polish Cipher Bureau cryptologist Marian Rejewski to break German Enigma-machine ciphers.
Read on Wikipedia · Image Marian Rejewski, Public domain
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