Thaum peb mus online hauv tsev lossis hauv chaw lag luam, peb cia siab rau kev sib txuas lus hauv network los tiv thaiv peb cov ntaub ntawv thiab kev lag luam. Nov yog saib seb qhov network encryption yog dab tsi thiab nws tiv thaiv peb cov ntaub ntawv digital li cas.
Network encryption kuj qee zaum hu ua network txheej encryption lossis network-theem encryption.
Network Encryption yog dab tsi?
Thaum peb mus online rau hauv txhab nyiaj lossis khw, peb cov kev lag luam yuav tsum raug tiv thaiv. Encryption yog cov txheej txheem kev ruaj ntseg network nrov thiab zoo tsim los ua kom peb cov ntaub ntawv muaj kev nyab xeeb.
Kev nkag mus tau zoo zais cov ntaub ntawv thiab cov ntsiab lus ntawm qhov muag tsis pom. Cov ntaub ntawv no tuaj yeem muab tau tsuas yog los ntawm cov txheej txheem decryption sib raug. Encryption thiab decryption yog cov txheej txheem hauv cryptography, kev qhuab qhia kev tshawb fawb tom qab kev sib txuas lus ruaj ntseg.
Muaj ntau cov txheej txheem encryption thiab decryption (tseem hu ua algorithms), tab sis feem ntau encryption algorithms ua tiav qib siab ntawm kev tiv thaiv cov ntaub ntawv los ntawm kev siv cov yuam sij.
Tus yuam sij encryption yog dab tsi?
Hauv computer cryptography, tus yuam sij yog ib ntu ntev ntawm cov khoom siv los ntawm kev nkag mus thiab decryption algorithms. Piv txwv li, cov hauv qab no sawv cev rau tus yuam sij hypothetical 40-ntsis:
00001010 01101001 10011110 00011100 01010101
Ib qho kev encryption algorithm yuav siv cov lus qub, tsis tau encrypted thiab tus yuam sij thiab tom qab ntawd hloov cov lus qub raws li tus yuam sij cov khoom los tsim cov lus tshiab encrypted. Lub decryption algorithm siv cov lus encrypted thiab rov qab mus rau nws daim ntawv qub siv ib lossis ntau tus yuam sij.
Qee qhov cryptographic algorithms siv ib tus yuam sij rau ob qho tib si encryption thiab decryption. Tus yuam sij no yuav tsum khaws cia tsis pub leej twg paub, lossis lwm tus neeg uas paub txog tus yuam sij siv los xa xov tuaj yeem muab tus yuam sij ntawd rau lub decryption algorithm kom nyeem cov lus.
Lwm cov algorithms siv ib tus yuam sij rau encryption thiab thib ob, txawv tus yuam sij rau kev decryption. Tus yuam sij encryption tuaj yeem nyob twj ywm rau pej xeem hauv qhov no, vim tias yog tus yuam sij decryption tsis paub, tsis muaj leej twg tuaj yeem nyeem cov lus. Nrov internet kev ruaj ntseg raws tu qauv siv qhov no hu ua "public-key" encryption.
Public key encryption qee zaum hu ua "asymmetric encryption."
kab hauv qab
Cov web browsers niaj hnub siv cov txheej txheem Secure Sockets (SSL) raws tu qauv kom ruaj ntseg kev lag luam online. SSL ua haujlwm los ntawm kev siv tus yuam sij pej xeem rau encryption thiab sib txawv, tus yuam sij ntiag tug rau kev decryption. Thaum koj pom HTTPS ua ntej ntawm txoj hlua URL hauv koj tus browser, nws txhais tau tias SSL encryption tshwm sim tom qab qhov xwm txheej.
Kev nkag mus rau hauv Tsev Networks
Wi-Fi hauv tsev tes hauj lwm txhawb nqa ntau yam kev ruaj ntseg, suav nrog WPA thiab WPA2. Txawm hais tias cov no tsis yog qhov zoo tshaj plaws encryption algorithms, lawv txaus txaus los tiv thaiv hauv tsev network los ntawm sab nraud snoops.
Txhawm rau txiav txim siab seb hom encryption koj lub network siv hauv tsev, xyuas koj lub router broadband (lossis lwm lub rooj vag network) kev teeb tsa.
Lub luag haujlwm ntawm qhov ntev thiab kev ruaj ntseg Network
Vim WPA / WPA2 thiab SSL encryption nyob ntawm ntau yam ntawm cov yuam sij, ib qho kev ntsuas ntawm kev sib txuas lus hauv lub network yog nws "qhov tseem ceeb ntev," uas txhais tau hais tias tus lej ntawm cov khoom hauv tus yuam sij.
Kev siv SSL thaum ntxov hauv Netscape thiab Internet Explorer web browsers siv 40-ntsis SSL encryption tus qauv. Thawj qhov kev siv WEP rau hauv tsev network siv 40-ntsis encryption yuam sij, ib yam nkaus.
Hmoov tsis zoo, 40-ntsis encryption tau dhau los ua ib qho yooj yim heev rau kev txiav txim siab los ntawm cybercriminals uas tuaj yeem kwv yees tus lej txiav txim kom raug. Ib qho txheej txheem cryptography deciphering hu ua brute-force decryption siv lub khoos phis tawj ua haujlwm kom suav tag nrho thiab sim txhua tus yuam sij ua tau ib qho los ntawm ib qho.
Kev ruaj ntseg software tsim tau pom tias 40-ntsis encryption tau lax ntau dhau, yog li lawv tau txav mus rau 128-ntsis thiab qib siab encryption ntau xyoo dhau los.
Piv rau 40-ntsis encryption, 128-ntsis encryption muaj 88 qhov ntxiv ntawm qhov tseem ceeb ntev. Qhov no txhais tau tias yog 309, 485, 009, 821, 345, 068, 724, 781, 056 kev sib txuas ntxiv uas yuav tsum tau ua kom muaj kev sib tsoo brute-force.
Thaum muaj qee qhov kev ua haujlwm nyiaj siv ua haujlwm ntawm cov khoom siv thaum lawv yuav tsum tau encrypt thiab decrypt cov xov xwm tsheb nrog cov yuam sij no, cov txiaj ntsig zoo dua tus nqi.
FAQ
Koj txuas mus rau lub network encrypted li cas?
Yog tias lub network koj txuas nrog muaj tus password, qhov ntawd txhais tau tias nws muaj hom encryption, thiab tsis muaj leej twg tuaj yeem koom nrog. Yog tias koj siv VPN, qhov no yog lwm hom encryption uas zais qhov koj ua hauv koj lub network thaum txuas nrog nws.
Puas txuas rau cov tes hauj lwm encrypted muaj kev cuam tshuam tsis zoo?
Qee cov cuab yeej qub tsis tuaj yeem txuas mus rau txhua qhov kev sib txuas lus, xws li WPA2, piv txwv. Tsis tas li ntawd, yog tias koj siv VPN, kev nkag mus yuav qeeb koj qhov kev sib txuas ceev.
