Cov txheej txheem:
Video: Cov yuam sij symmetric tsim li cas?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Symmetrical - tus yuam sij algorithms siv ib qho kev sib koom tus yuam sij ; khaws cov ntaub ntawv zais cia yuav tsum khaws qhov no tus yuam sij zais cia. Hauv qee kis cov yuam sij yog random tsim tawm siv lub tshuab hluav taws xob random (RNG) lossis pseudorandom tooj generator (PRNG). PRNG yog lub computer algorithm uas tsim cov ntaub ntawv uas tshwm random nyob rau hauv kev tsom xam.
Yog li, yuav ua li cas cov yuam sij asymmetric tsim?
Piv txwv li, asymmetric encryption muaj peb zaug Gen, Enc thiab Dec qhov twg Gen sawv cev rau tus yuam sij khub tiam. Thiab cov tus yuam sij khub ntawm chav kawm muaj ib tug pej xeem thiab ib tug private. RSA pib pib los ntawm tsim ob qhov loj random primes, nws tsis pib nrog ib tus lej tas li.
Tsis tas li ntawd, cov yuam sij symmetric ua haujlwm li cas? Symmetric encryption yog hom encryption nyob qhov twg xwb tus yuam sij (ib secret tus yuam sij ) yog siv los encrypt thiab decrypt cov ntaub ntawv hluav taws xob. Los ntawm kev siv symmetric encryption algorithms, cov ntaub ntawv hloov dua siab tshiab rau hauv daim ntawv uas tsis tuaj yeem nkag siab los ntawm leej twg ua tsis muaj qhov zais cia tus yuam sij mus decrypt nws.
Ua li no, ua li cas koj ua tus yuam sij symmetric?
Txhawm rau tsim cov yuam sij sib npaug sib npaug ntawm ob lub servers sib txawv
- Hauv Object Explorer, txuas mus rau ib qho piv txwv ntawm Database Engine.
- Ntawm qhov Standard bar, nyem New Query.
- Tsim ib tug yuam sij los ntawm kev khiav cov nram qab no CREATE MASTER KEY, CREATE CERTIFICATE, thiab CREATE SYMMETRIC KEY nqe lus.
Cov yuam sij symmetric siv nyob qhov twg?
Siv nyob rau hauv niaj hnub computer systems Symmetric encryption algorithms tau ua haujlwm nyob rau hauv ntau lub tshuab computer niaj hnub los txhim kho cov ntaub ntawv kev ruaj ntseg thiab cov neeg siv ntiag tug. Advanced Encryption Standard (AES) uas yog dav siv nyob rau hauv ob qho tib si kev ruaj ntseg messaging applications thiab huab cia yog ib qho piv txwv tseem ceeb ntawm a symmetrical cipher.
Pom zoo:
Cov yuam sij symmetric sib koom li cas?
Symmetric key cryptography yog ib qho encryption system uas tus neeg xa thiab txais cov lus qhia ib leeg, ib qho tseem ceeb uas yog siv los encrypt thiab decrypt cov lus
Ib tus yuam sij tseem ceeb puas tuaj yeem muaj ob tus yuam sij txawv teb chaws?
Nws yog qhov zoo kawg nkaus kom muaj ob kab ntawv tseem ceeb txawv teb chaws xa mus rau tib lub ntsiab lus tseem ceeb hauv ib lub rooj sib txawv vim tias txhua tus nqi tseem ceeb txawv teb chaws yuav siv cov ntaub ntawv sib txawv hauv cov lus hais
Koj yuav ua li cas ntxuav cov yuam sij laptop yam tsis tau tshem cov yuam sij?
Cov kauj ruam tua thiab tshem tawm koj lub laptop ua ntej koj ua txhua yam huv si. Tilt lub laptop upside down thiab maj mam kais los yog shakeit. Txau nruab nrab ntawm cov yuam sij nrog compressed cua kom tshem tawm cov plua plav. So cov yawm sij nrog ib daim ntaub ntub dej microfiber. Tshem tawm cov grime uas tawv ncauj nrog paj rwb pob dipped inisopropyl cawv
Koj txhais li cas los ntawm tus yuam sij ntiag tug thiab pej xeem tus yuam sij cryptography?
Nyob rau hauv pej xeem tus yuam sij cryptography, ob tus yuam sij yog siv, ib tug yuam sij yog siv rau encryption thiab thaum lwm yam yog siv rau decryption. 3. Nyob rau hauv private keycryptography, tus yuam sij yog khaws cia tsis pub leejtwg paub. Nyob rau hauv pej xeem tus yuam sij cryptography, ib qho ntawm ob tus yuam sij yog khaws cia tsis pub leejtwg paub
Cov yuam sij tseem ceeb thiab cov yuam sij txawv teb chaws yog dab tsi?
Relation of Primary Key vs Foreign Key Ib lub ntsiab tseem ceeb tshwj xeeb qhia cov ntaub ntawv nyob rau hauv lub rooj sib tham database, whereas tus yuam sij txawv teb chaws yog hais txog lub teb nyob rau hauv ib lub rooj uas yog lub ntsiab tseem ceeb ntawm lwm lub rooj