Puas tuaj yeem NSA tawg AES?
Puas tuaj yeem NSA tawg AES?

Video: Puas tuaj yeem NSA tawg AES?

Video: Puas tuaj yeem NSA tawg AES?
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Anonim

Raws li Snowden cov ntaub ntawv, lub NSA isdoing kev tshawb fawb txog seb puas muaj kev tawm tsam cryptographic raws li taustatistic yuav pab tau tawg AES . Tam sim no, tsis muaj lub tswv yim tawm tsam uas yuav tso cai rau ib tus neeg tsis paub txog tus yuam sij los nyeem cov ntaub ntawv encrypted los ntawm AES thaum ua kom raug.

Kuj nug, puas yog AES tawg tau?

Nws yog lub tswv yim kiag li tawm tsam kaum-round AES - 256: Nws. AES yog qhov zoo tshaj plaws paub thiab feem ntau siv block cipher. Txawm li cas los xij, AES -192 thiab AES -256 tsis ntev los no tau pom tias yog tawg tau byattacks uas yuav tsum tau 2176 thiab 2119 lub sijhawm, raws li.

Tsis tas li ntawd, NSA puas tuaj yeem tawg VPN? Cov cuab yeej malware yog ib qho siv los crack VPNs orVOIP tsheb. Qhov twg VPN cov kws kho mob muab cov kev cai qub, nws paub txog NSA tau tawg qhov encryption. OpenVPN tseem suav tias yog kev nyab xeeb, txawm li cas los xij. Cov khoom siv uas tsis tuaj yeem khiavOpenVPN yuav tsum tau khiav siv L2TP / IPSec raws tu qauv, tab sis cov no tsis suav tias muaj kev nyab xeeb tiag tiag.

Tsuas yog li ntawd, AES 128 puas tuaj yeem tawg?

AES , uas feem ntau siv cov yuam sij uas yog ob qho tib si 128 los yog 256 ntsis ntev, tsis tau tawg, thaum DES ua tau Tam sim no tau tawg nyob rau hauv ib qho teeb meem ntawm ib teev, Moorcones hais. AES tau pom zoo rau cov ntaub ntawv tseem ceeb hauv tsoomfwv Meskas uas tsis raug cais tawm, nws hais ntxiv.

Qhov txawv ntawm Rijndael thiab AES yog dab tsi?

AES muaj qhov ruaj khov qhov loj ntawm 128 khoom thiab qhov tseem ceeb ntawm 128, 192, lossis 256 khoom, whereas Rijndael tuaj yeem txheeb xyuas nrog qhov thaiv thiab qhov loj me hauv txhua qhov ntau ntawm 32 cov khoom, nrog a yam tsawg kawg ntawm 128 ntsis thiab qhov siab tshaj plaws ntawm 256 ntsis. AES yog tus ua tiav ntawm Data Encryption Standard (DES).

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