Grill (cryptology)
METHOD IN CRYPTOLOGY
"grill" method
The grill method (),Marian Rejewski, Mathematical Solution of the Enigma Cipher, trans Christopher Kasparek, Cryptologia, Vol 6, Number 1, pp 1–18 at 17, January 1982 in cryptology, was a method used chiefly early on, before the advent of the cyclometer, by the mathematician-cryptologists of the Polish Cipher Bureau (Biuro Szyfrów) in decrypting German Enigma machine ciphers. The Enigma rotor cipher machine changes plaintext characters into cipher text using a different permutation for each character, and so implements a polyalphabetic substitution cipher.