Qhov txawv ntawm Public Key thiab Private Key

Cov txheej txheem:

Qhov txawv ntawm Public Key thiab Private Key
Qhov txawv ntawm Public Key thiab Private Key

Video: Qhov txawv ntawm Public Key thiab Private Key

Video: Qhov txawv ntawm Public Key thiab Private Key
Video: Qhov Lus Zais Tob ntawm Neeg Leej Tub qhov Kev Rov Qab Los (Ntsiab Lus Tseem Ceeb) 2024, Kaum ib hlis
Anonim

Qhov txawv ntawm Public key thiab Private Key yog tias yog tus yuam sij pej xeem yog tus yuam sij kaw, ces nws tuaj yeem siv los xa cov kev sib txuas lus ntiag tug (piv txwv li khaws cia tsis pub leej twg paub) thaum yog tus yuam sij ntiag tug yog tus yuam sij kaw, Tom qab ntawd lub kaw lus tuaj yeem siv los txheeb xyuas cov ntaub ntawv xa los ntawm tus tuav ntawm tus yuam sij ntiag tug (piv txwv li txhawm rau khaws qhov tseeb).

Cryptography yog kev kawm txog kev zais cov ntaub ntawv. Nws tso cai rau kev tiv thaiv cov ntaub ntawv los ntawm lwm tus neeg thib peb thaum kev sib txuas lus tshwm sim dhau qhov nruab nrab tsis ntseeg xws li hauv internet. Encryption siv lub algorithm hu ua cipher los encrypt cov ntaub ntawv thiab nws tuaj yeem decrypted tsuas yog siv tus yuam sij tshwj xeeb. Ciphertext lossis ciphertext yog cov ntaub ntawv encrypted. Decryption yog tus txheej txheem kom tau txais cov ntaub ntawv qub (plaintext) los ntawm cov ntawv ciphertext. Muaj ob txoj hauv kev encryption. Lawv yog Public Key Encryption thiab Symmetric Key Encryption. Public key encryption muaj ob yam sib txawv tab sis lej muaj feem cuam tshuam. Lawv yog tus yuam sij rau pej xeem thiab tus yuam sij ntiag tug. Tus yuam sij symmetric encryption siv tib tus yuam sij ntiag tug rau encryption thiab decryption.

Public Key yog dab tsi?

Hauv kev encryption tseem ceeb rau pej xeem, cov ntaub ntawv encrypted siv tus neeg tau txais tus yuam sij pej xeem tsis tuaj yeem decrypted yam tsis siv tus yuam sij ntiag tug sib xws. Ntawm qhov tod tes, tus yuam sij pej xeem tso cai rau decrypting cov ntaub ntawv encrypted los ntawm tus yuam sij ntiag tug.

Qhov txawv ntawm Public Key thiab Private Key
Qhov txawv ntawm Public Key thiab Private Key
Qhov txawv ntawm Public Key thiab Private Key
Qhov txawv ntawm Public Key thiab Private Key

Daim duab 01: Cryptography

Txawm li cas los xij, nws tsis tuaj yeem siv tus yuam sij pej xeem hauv qhov chaw ntawm tus yuam sij ntiag tug. Yog tias tus yuam sij xauv yog pej xeem, ces leej twg tuaj yeem siv lub kaw lus xa kev sib txuas lus ntiag tug mus rau tus tuav ntawm tus yuam sij xauv. Qhov no ua kom paub tseeb tias tus neeg tau txais kev cai lij choj lossis tus uas muaj tus yuam sij ntiag tug yog tib tus neeg tuaj yeem nyeem cov lus. Yog li, qhov no lees paub qhov tsis pub lwm tus paub ntawm kev sib txuas lus ntawm ob tog.

Private Key yog dab tsi?

Nyob rau hauv pej xeem tus yuam sij encryption, tus yuam sij ntiag tug tso cai tsuas yog decrypt cov ntaub ntawv uas tau encrypted siv cov yuam sij pej xeem sib xws. Ib yam li ntawd, cov ntaub ntawv encrypted siv tus yuam sij ntiag tug tuaj yeem tsuas yog decrypted siv tus yuam sij rau pej xeem sib xws. Txawm li cas los xij, nws tsis tuaj yeem siv tus yuam sij ntiag tug hauv qhov chaw ntawm tus yuam sij pej xeem. Yog tias tus yuam sij xauv yog tus kheej, qhov system no ua rau nws muaj peev xwm txheeb xyuas tau tias tus tswv kaw cov ntaub ntawv no. Yog vim li cas yog tias cov lus encrypted los ntawm tus xa tuaj yeem tsuas yog qhib los ntawm ib tus neeg nrog tus yuam sij rau pej xeem sib xws, yog li paub tseeb tias tus xa ntawv tau tuav tus yuam sij ntiag tug. Hauv lwm lo lus, nws txhais tau hais tias tau txais cov lus qub thiab tsis cuam tshuam. Yog li ntawd, kos npe digital siv qhov no.

Qhov txawv ntawm Public Key thiab Private Key yog dab tsi?

Public key yog tus yuam sij luam tawm uas pab xa cov lus ruaj ntseg rau tus txais. Yog tias nws yog tus yuam sij xauv, ces nws tuaj yeem siv los xa kev sib txuas lus ntiag tug.

Ntawm qhov tod tes, tus yuam sij ntiag tug yog tus yuam sij zais cia. Nws pab decrypt cov lus encrypted nrog tus yuam sij rau pej xeem sib xws. Yog tias tus yuam sij ntiag tug yog tus yuam sij xauv, ces lub kaw lus tuaj yeem siv los txheeb xyuas cov ntaub ntawv xa los ntawm tus tuav ntawm tus yuam sij ntiag tug.

Qhov txawv ntawm Public Key thiab Private Key hauv Tabular Form
Qhov txawv ntawm Public Key thiab Private Key hauv Tabular Form
Qhov txawv ntawm Public Key thiab Private Key hauv Tabular Form
Qhov txawv ntawm Public Key thiab Private Key hauv Tabular Form

Summary – Public Key vs Private Key

tus yuam sij pej xeem thiab tus yuam sij ntiag tug yog ob peb tus yuam sij siv hauv pej xeem tus yuam sij cryptography. Yog hais tias tus yuam sij xauv tau raug tshaj tawm rau pej xeem, ces tus yuam sij xauv yuav dhau los ua tus yuam sij ntiag tug thiab rov ua dua. Public key tsis tuaj yeem siv los muab tus yuam sij ntiag tug. Qhov sib txawv ntawm Public key thiab Private Key yog tias yog tus yuam sij pej xeem yog tus yuam sij kaw, ces nws tuaj yeem siv los xa cov kev sib txuas lus ntiag tug (piv txwv li khaws cia tsis pub leej twg paub) thaum yog tus yuam sij ntiag tug yog tus yuam sij xauv, ces lub kaw lus siv tau. txhawm rau txheeb xyuas cov ntaub ntawv xa los ntawm tus tuav ntawm tus yuam sij ntiag tug (piv txwv li khaws cia qhov tseeb).

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