Video: Dab tsi yog niaj hnub block cipher?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Txhais • Ib tug yuam sij symmetric niaj hnub block cipher encrypts ib n-ntsis thaiv ntawm plaintext lossis decrypts ib n-ntsis thaiv ntawm ciphertext . • Lub encryption lossis decryption algorithm siv tus yuam sij k-ntsis.
Hais txog qhov no, dab tsi yog block cipher nrog piv txwv?
A thaiv cipher yog ib txoj kev encryption uas siv cov kev txiav txim siab algorithm nrog rau tus yuam sij symmetric los encrypt ib thaiv ntawm cov ntawv nyeem, tsis yog encrypting ib me ntsis ntawm ib lub sij hawm raws li nyob rau hauv kwj ciphers . Rau piv txwv , ib common thaiv cipher.
Qhov thib ob, block cipher ua haujlwm li cas? A thaiv cipher yog ib txoj hauv kev encrypting ntawv (los tsim ciphertext ) uas tus yuam sij cryptographic thiab algorithm raug siv rau a thaiv ntawm cov ntaub ntawv (piv txwv li, 64 contiguous bits) ib zaug ua ib pab pawg es tsis yog rau ib me ntsis ntawm ib lub sij hawm. Lwm txoj hauv kev tseem ceeb, siv tsawg dua, yog hu ua kwj cipher.
Qhov thib ob, niaj hnub cipher yog dab tsi?
Ciphers . Feem ntau, a cipher tsuas yog ib txheej txheej ntawm cov kauj ruam (ib qho algorithm) rau kev ua ob qho tib si encryption, thiab sib xws decryption. Txawm hais tias tej zaum qhov zoo li yog lub tswv yim yooj yim, ciphers ua lub luag haujlwm tseem ceeb hauv niaj hnub tshuab.
Dab tsi yog qhov kev ruaj ntseg block cipher?
AES - Tsoom Fwv Teb Chaws Asmeskas tus qauv txij li xyoo 2002, AES lossis Advanced Encryption Standard yog arguably tus feem ntau dav siv thaiv cipher hauv ntiaj teb no. Nws muaj ib thaiv loj ntawm 128 khoom thiab txhawb peb qhov tseem ceeb qhov ntau thiab tsawg - 128, 192, thiab 256 khoom. Qhov ntev ntawm tus yuam sij loj, qhov muaj zog dua encryption.
Pom zoo:
Dab tsi yog cov txiaj ntsig ntawm kev siv thev naus laus zis hauv lub neej niaj hnub no?
Yog li tsis muaj ntau ado, ntawm no yog cov npe ntawm 10 qhov txiaj ntsig ntawm cov ntaub ntawv thev naus laus zis. Tej thaj chaw deb nkag tau: Advertisement. Tsim cov hauj lwm tshiab: Xov Xwm Technology thiab kev kawm: Cov ntaub ntawv thev naus laus zis thiab kev noj qab haus huv: Kev nce qib ntawm kev lag luam: Kev sib txuas lus xov xwm: 4. Kev Lom Zem: Kev sib txuas lus zoo:
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Niaj hnub nimno encryption yog dab tsi?
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Google's Ranking Algorithm (PageRank) tuaj yeem yog qhov siv ntau tshaj plaws. Nws qhov cuam tshuam / cuam tshuam rau lub ntiaj teb: PageRank yog, sib cav, siv cov algorithm tshaj plaws hauv ntiaj teb niaj hnub no