Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: Mavambo eDES anodzokera kuma1970. Muna 1972, pashure pokupedzisa fundo pamusoro pezvinodikanwa zvekuchengetedzwa kwekombiyuta zvehurumende yeUnited States, sangano reUnited States rinoona nezvemitemo NBS (National Bureau of Standards) - zvino rava kunzi NIST (National Institute of Standards and Technology) - rakaona kudikanwa kwomutemo wehurumende yose wokunyoresa mashoko asingazivikanwi, anokosha. Nokudaro, pana 15 May 1973, pashure pokukurukura neNSA, NBS yakakumbira zvikarakadzo zvechiverengero chaizosangana nemitemo yakaoma yokugadzira. Zvisinei, hapana chimwe chezvakataurwa chakanga chakakodzera. Chikumbiro chechipiri chakapiwa musi wa27 August 1974. Panguva ino, IBM yakapa munhu aikwikwidza uyo akaonekwa seanogamuchirwa - cipher yakagadzirwa munguva ya1973-1974 yakavakirwa pane imwe algorithm yapfuura, Lucifer cipher yaHorst Feistel. Chikwata cheIBM chaibatanidzwa mukugadzira uye kuongorora cipher chaisanganisira Feistel, Walter Tuchman, Don Coppersmith, Alan Konheim, Carl Meyer, Mike Matyas, Roy Adler, Edna Grossman, Bill Notz, Lynn Smith, uye Bryant Tuckerman.  Mubvunzo: Inhambo ipi iyo DES inotanga?
kutanga kwema1970