3. Ib qho kev sib txawv cryptanalysis. Xyoo 1990, Eli Biham thiab Adi Shamir qhia txog kev sib txawv cryptanalysis, xaiv-kev tawm tsam rau cryptanalyzing ciphers raws li kev hloov pauv thiab kev hloov pauv.
Dab tsi yog qhov sib txawv cryptanalysis?
Differential cryptanalysis yog daim ntawv dav dav ntawm cryptanalysis siv feem ntau los thaiv cov ntawv ciphers, tab sis kuj tseem tso cov ciphers thiab cryptographic hash ua haujlwm. Hauv kev nkag siab dav dav, nws yog kev kawm txog qhov sib txawv ntawm cov ntaub ntawv tawm tswv yim tuaj yeem cuam tshuam qhov sib txawv ntawm cov zis.
Leej twg invented Des?
IBM tsim DES hauv xyoo 1970s raws li Horst Feistel tus qauv ua ntej. Nws tau xa mus rau Tsoomfwv Meskas tus thawj coj rau National Institute of Standards and Technology (NIST) hauv kev teb rau kev hu xovtooj rau hauv Tebchaws Europe), 9th-xyoo pua Arab polymath, hauv Risalah fi Istikhraj al-Mu'amma (Ib Phau Ntawv Qhia Txog Kev Txiav Txim Cov Lus Cryptographic).
Thaum twg cryptanalysis tau tsim?
A US Army cryptologist uas tau sau lo lus "cryptanalysis", William decrypted Japanese diplomatic lus thaum Ntiaj Teb Tsov Rog II thiab xov tooj zais cia hauv 1924 Teapot Dome Scandal uas ua rau kev tawm haujlwm ntawm cov thawj coj hauv tebchaws Meskas. North vs South.
