Although these encryption methods were more complex than previous schemes and required machines to encrypt and decrypt, other machines such as the British Bombe were invented to crack these encryption methods.
Iako su ove metode šifriranja bile kompleksnije od prethodnih i zahtijevale mašine za šifriranje i dešifriranje, izumljene su druge mašine (kao npr. britanska "Bomba") za dekriptiranje ovih metoda šifriranja.