Zoo li tus nqi ntsev, qhov Initialization Vector tuaj yeem khaws cia hauv kev khaws pej xeem, nrog rau cov ntaub ntawv encrypted. Thiab ib qho ntawm txoj hauv kev khaws cia, yog ntxiv IV cov ntaub ntawv rau qhov txiaj ntsig encryption: Thiab cais nws ua ntej decryption, los ntawm cov ntaub ntawv encrypted: Tag nrho cov cai muaj nyob ntawm no.
Koj khaws IV qhov twg?
Tsawg kawg ib yam koj tuaj yeem txhim kho yooj yim dua: Koj tuaj yeem khaws cov IV hauv cov ntaub ntawv ntawm ib sab ntawm cov ntaub ntawv encrypted Tus IV nws tus kheej tsis yog yuav tsum zais. Nws feem ntau ua raws li ntsev, kom tsis txhob muaj qhov xwm txheej uas ob daim ntawv teev cov ntaub ntawv tib yam tau muab zais rau hauv cov ntawv ciphertext zoo tib yam.
Yuav tsum pib vector vector raug encrypted?
Ib qho pib vector (lossis IV) yog siv kom paub meej tias tus nqi tib yam encrypted ntau zaus, txawm tias muaj tib tus yuam sij zais cia, yuav tsis ua rau tib tus nqi encrypted.. Nov yog txheej txheej kev ruaj ntseg ntxiv.
Puas qhov pib vector yuav tsum tau random?
Tus IV feem ntau yuav tsum tau random lossis pseudorandom, tab sis qee zaum tus IV tsuas yog xav tau los tsis paub lossis tshwj xeeb. …
Yuav tsum khaws IV?
Tus IV tsis tas yuav khaws cia zais cia, qhov tseeb nws txhais tau tias yuav tsum tau sib koom. Koj xav tau IV nrog rau tus yuam sij zais cia kom decrypt cov ntaub ntawv, tsuas yog ib qho ntawm ob qhov tseem ceeb yuav ua rau koj tsis zoo. Cov IV tuaj yeem khaws cia nrog rau cov ntaub ntawv encrypted hauv database.
