Ga misali, shigarwa "011011" yana da waje ragowa "01" da kuma ciki ragowa "1101"; da m fitarwa zai zama "1001".A 8 S-akwatuna na DES kasance batun m binciken shekaru da yawa daga wani damuwa da cewa a backdoor <unk> wani rauni da aka sani kawai ga ta designers <unk> iya an dasa a cikin cipher. A S-akwatin zane sharudda aka ƙarshe da aka buga (a Coppersmith 1994) bayan jama'a rediscovery na bambanci cryptanalysis nuna, cewa sun kasance a hankali tuned kara juriya da wannan takamaiman.
zabar jere ta amfani da waje biyu ragowa (na farko da na karshe ragowa), da kuma shafi ta amfani da ciki hudu ragowa