Yuav ua li cas koj cov ntaub ntawv khaws cia ntiag tug nyob hauv web
Nyob rau hauv lub dhau los dhau los, cov ntsiab lus xws li xaus-to-end encryption yuav rau cov geeks tsuas thiab tsis yuav ua rau tus nplaig ntawm pw neeg. Peb feem coob yuav tsis thab xav xav paub txog nws thiab tshawb nrhiav rau hauv Internet. Hnub no, kawg-rau-kawg encryption yog ib feem ntawm koj lub neej niaj hnub. Nws yog qhov tseeb ruaj ntseg mechanism uas tiv thaiv koj cov ntaub ntawv rhiab thiab lwm yam hauv online, zoo li koj daim credit card thaum lub sij hawm sib pauv, los yog koj lub xov tooj hu ua wiretapped.
Tam sim no nrog cov kev txhawj xeeb thoob ntiaj teb hais txog tib neeg tus kheej kev tsim txom, hackers lurking nyob rau hauv txhua txhua lub hauv paus, thiab tsoom fwv prying rau lawv cov pej xeem kev sib txuas lus, Internet hu, VoIP thiab instant messaging apps featuring kawg-rau-kawg encryption. Nws pib ntau hom kev sib tham thaum WhatsApp coj mus rau ntau dua ib tug neeg siv cov neeg siv nyiaj; tom qab ua ntej los ntawm apps xws li Threema thiab Telegram, ntawm lwm cov. Nyob rau hauv tsab xov xwm no, peb yuav pom qhov xaus-rau-kawg encryption yog, nws ua haujlwm hauv cov lus yooj yim heev thiab nws ua dab tsi rau koj.
Encryption piav qhia
Ua ntej yuav mus rau qhov kawg-rau-kawg ', peb pom thawj cov ntaub ntawv dawb encryption. Cov nriaj rau cov ntaub ntawv muaj kev ruaj ntseg thiab kev ywj pheej hauv Internet yog kev sib ntaus sib tua uas muaj ntau yam kev phom sij, tab sis thaum kawg, nws khoov rau qhov no: thaum twg koj xa cov ntaub ntawv ntiag tug mus rau lwm lub computer los yog neeg rau zaub mov hauv Internet, uas koj ua ntau zaus ib hnub , nws zoo li liab caij hood tus niam xa nws mus rau nws pog tus nyob rau sab nraud ntawm cov hav zoov. Cov hav zoov, uas nws tau hla ib leeg tsis muaj kev tiv thaiv, muaj hma thiab lwm yam kev puas tsuaj ntau dhau dua li tus hma ntawm zaj dab neeg txaj.
Thaum koj xa cov ntaub ntawv pob ntawm koj lub suab hu, sib tham, email los yog credit card naj npawb ntawm lub zoov nuj txeeg ntawm Internet, koj tsis muaj kev tswj xyuas tus neeg muab lawv cov tes rau lawv. Qhov no yog qhov ntawm Internet. Qhov no yog dab tsi ua rau ntau yam khiav ntawm nws dawb, nrog rau Lub Suab Tawm IP , uas muab rau koj hu dawb. Koj cov ntaub ntawv thiab lub suab pob ntawv dhau los ntawm ntau lub servers tsis paub, routers, thiab cov cuab yeej siv twg hacker, tus tij laug loj los yog neeg siab phem tus neeg sawv cev tuaj yeem cuam tshuam rau lawv. Yuav tiv thaiv koj cov ntaub ntawv li cas? Sau encryption, qhov chaw kawg.
Encryption yuav tsum muab koj cov ntaub ntawv xa mus rau ib daim ntawv sau ua tiav xws li nws tsis tuaj yeem ua rau txhua tus neeg cuam tshuam nws nyeem, to taub thiab ua kom muaj kev nkag siab ntawm nws, tsuas yog tus neeg tau txais kev pabcuam rau nws xwb. Thaum nws ncav cuag tus neeg tau txais kev pabcuam, cov ntaubntawv khoov tau hloov rov qab rau nws daim tseem ntawv thiab nws rov tshwmsim dua thiab nkag siab dua. Txoj kev tom kawg no yog hu ua "decryption".
Cia ua tiav cov lus glossary. Cov ntaub ntawv tsis raug cai yog hu ua cov ntawv nyeem; encrypted cov ntaub ntawv hu ua cyphertext; lub computer mechanism lossis daim ntawv qhia uas tau sau rau hauv cov ntaub ntawv los encrypt nws yog hu ua encryption algorithm - tsuas yog software uas ua haujlwm rau cov ntaub ntawv kom khij nws. Ib qho tseem ceeb encryption siv nrog lub algorithm kom khij lub plaintext xws li qhov tseem ceeb yog tsim nyog nrog rau lub algorithm kom decrypt cov ntaub ntawv. Yog li, tsuas yog tog neeg uas tuav tus yuam sij tuaj yeem nkag mus rau cov ntaub ntawv qub. Nco ntsoov tias tus yuam sij yog cov hlua ntev heev ntawm cov xov tooj uas koj tsis tas yuav nco qab lossis tu, raws li cov software ua nws tag nrho.
Encryption , los yog raws li paub ua ntej lub hnub nyoog digital, cryptography, tau siv rau lub xyoo txheeb ua ntej peb lub sijhawm. Cov neeg Ancient cov neeg siv los sib zog ua rau lawv hieroglyphs kom tiv thaiv cov neeg tsis tshua muaj neeg tsis to taub txog cov khoom. Niaj hnub thiab scientific encryption tuaj nyob hauv nruab nrab hnub nyoog nrog As mathematician Al-Kindi uas tau sau thawj phau ntawv ntawm qhov kev kawm. Nws tau los ua tiag tiag thiab muaj siab heev thaum lub sij hawm Ntiaj Teb Tsov Rog II nrog lub Enigma machine thiab pab cuam tshuam txog Nazis ntau zaus.
Tam sim no, thawj heev xa tam sim thiab xa xov apps tuaj nrog qhov kawg-rau-kawg encryption tuaj ntawm lub teb chaws Yelemees, qhov chaw uas tib neeg txhawj txog lawv tus kheej. Piv txwv yog Telegram thiab Threema. Tiag tiag, qhov no tej zaum yuav raug ntxiv nrog cov kev ntxhov ntawm lub teb chaws Yelemees Chancellor Merkel lub xov tooj hu ua wiretapped los ntawm Teb Chaws Asmeskas. Kuj, Jan Koum, co-founder ntawm WhatsApp, hais nws cov lus Askiv thaum yau keeb kwm thiab txhua tus theatrical spying muab kev koom tes raws li ib qho ntawm cov tsav ntsiab lus rau nws eagerness mus tswj tsis pub twg paub los ntawm encryption ntawm nws app, uas txawm li ntawd los tuaj lig heev.
Symmetric thiab Asymmetric Encryption
Tsis txhob mloog cov lus sib txawv. Peb tsuas yog xav ua kom qhov txawv ntawm ob lub ntsiab lus ntawm cov tswvyim yooj yim. Ntawm no yog ib qho piv txwv qhia txog kev ua li cas encryption ua haujlwm.
Tom xav xa ib qho lus rau Harry. Cov lus no yog dhau los ntawm qhov kev siv encryption thiab, siv qhov tseem ceeb, nws yog encrypted. Thaum lub sij hawm algorithm muaj rau txhua tus neeg uas them taus los geeky txaus, zoo li Dick leej twg xav paub txog dab tsi yog hais tias, tus yuam sij yog kev pub leejtwg ntawm Tom thiab Harry. Yog hais tias Dick lub hacker tswj kev cuam tshuam cov lus nyob rau hauv cyphertext, nws yuav tsis muaj peev xwm decrypt nws rov qab mus rau thawj cov lus tshwj tsis yog nws muaj tus yuam sij, uas nws tsis.
Qhov no hu ua symmetric encryption, uas yog qhov tseem ceeb yog siv los encrypt thiab decrypt ntawm ob tog. Qhov no qhia tau qhov teeb meem vim tias ob tog neeg yuav tsum muaj qhov tseem ceeb, uas yuav muaj kev xa nws los ntawm ib sab mus rau lwm qhov, li no ua rau nws raug quab yuam. Nws yog vim li no tsis zoo rau txhua tus neeg mob.
Asymmetric encryption yog qhov kev daws teeb meem. Ob hom ntawm cov yawm sij siv rau txhua tog neeg, ib tus pej xeem yuam thiab ib qho tseem ceeb, uas yog txhua tus neeg muaj qhov tseem ceeb pej xeem thiab tus yuam sij. Cov yuam sij pej xeem muaj rau ob tog neeg, thiab rau lwm tus neeg, raws li ob tog nkawm sib lawv cov pej xeem ua ntej sib txuas lus. Tom siv Harry 's pej xeem yuam kom encrypt cov lus, uas tau tam sim no tsuas yog decrypted siv qhov no (Harry' s) pej xeem yuam thiab Harry tus yuam sij.
Tus yuam sij no tsuas yog muaj rau Harry thiab tsis muaj leej twg, tsis txawm rau Tom tus tub ceev xwm. Qhov yuam sij no yog lub hauv paus uas ua rau nws tsis muaj lwm tus neeg tuaj yeem siv cov lus tsis txaus siab vim hais tias tsis muaj leej twg xa mus rau tus yuam sij.
End-to-End Encryption piav qhia
Xaus-rau-kawg encryption ua haujlwm raws li tau piav saum toj no, thiab yog ib qho kev siv ntawm cov ntawv pov thawj asymmetric. Raws li lub npe siv, kawg-rau-kawg encryption tiv thaiv cov ntaub ntawv xws li tias nws tsuas yog nyeem tau nyob rau ob hnub, los ntawm tus sender, thiab los ntawm tus neeg tau txais kev pab. Tsis pub leej twg tuaj yeem nyeem cov ntaub ntawv encrypted, xws li hackers, governments, thiab txawm tias tus neeg ua hauj lwm los ntawm cov ntaub ntawv yog dhau.
Thaum kawg-mus-kawg encryption inherently ntau yam tseem ceeb. Xav txog ob tug WhatsApp cov neeg siv sib txuas lus los ntawm instant messaging los yog hu rau hauv Internet. Cov ntaub ntawv kis tau los ntawm WhatsApp cov neeg siv khoom thaum transiting los ntawm ib tug neeg siv mus rau lwm. Rau ntau lwm cov kev pab cuam uas muaj encryption, cov ntaub ntawv yog encrypted thaum lub sij hawm hloov tab sis tiv thaiv tsuas yog sab nraud intruders zoo li hackers. Cov kev pab cuam cuam tshuam tau cov ntaub ntawv ntawm lawv cov servers thiab siv lawv. Lawv tuaj yeem xa cov ntaub ntawv rau cov neeg sab nraud lossis rau tub ceev xwm. End-to-end encryption yuav khaws cov ntaub ntawv encrypted, tsis muaj kev daws teeb meem, txawm tias ntawm tus neeg rau zaub mov thiab txhua txhia qhov chaw. Yog li, txawm tias lawv xav tau, qhov kev pab cuam tsis tuaj yeem cuam tshuam thiab ua txhua yam nrog cov ntaub ntawv. Cov tub ceev xwm thiab tsoomfwv cov tseem fwv kuj yog cov uas tsis tuaj yeem nkag mus rau cov ntaub ntawv, txawm tias muaj ntawv tso cai. Raws li kev xav, tsis muaj leej twg ua, tshwj tsis yog cov tog neeg nyob rau ob hnub.
Yuav Siv Li Cas Rau Cov Kawg Ua Ntej
Koj tsis tau ua tus siv qhov kawg-rau-kawg ncaj qha thiab tsis muaj dab tsi los ua kom nws ua hauj lwm. Cov kev pab cuam tom qab, lub software thiab lub web kev ruaj ntseg mechanisms saib xyuas nws.
Piv txwv, qhov browser uas koj nyeem ntawv no yog nruab nrog cov cuab yeej kawg-rau-kawg encryption, thiab lawv tau ua hauj lwm thaum koj koom hauv cov kev ua si hauv online uas yuav tsum tau ceev koj cov ntaub ntawv thaum kis tau tus mob. Xav txog dab tsi tshwm sim thaum koj yuav ib yam khoom siv online los siv koj daim credit card. Koj lub computer yuav tsum xa tus nab npawb credit card rau tus tub lag luam nyob rau lwm sab ntawm lub ntiaj teb. End-to-end encryption ua kom paub tseeb tias tsuas yog koj thiab tus tub lag luam lub computer los yog kev pab cuam thiaj li nkag tau rau tus xov tooj ntawd-tsis qhia leej twg paub.
Secure Socket Layer (SSL), los yog nws qhov tseeb hloov tshiab Thauj Txheej Txheem Kev Ruaj Ntseg (TLS), yog tus txheej txheem rau encryption rau lub vas sab. Thaum koj nkag mus rau hauv qhov chaw uas muaj qhov muab encryption rau koj cov ntaub ntawv - feem ntau lawv yog qhov chaw uas tswj koj tus kheej cov ntaub ntawv xws li koj tus kheej cov ntsiab lus, passwords, credit card numbers etc. - muaj cov cim qhia tias kev ruaj ntseg thiab kev nyab xeeb.
Hauv qhov chaw nyob, qhov URL pib nrog https: // instead of http : // , qhov ntxiv s sawv ruaj ntseg . Koj tseem yuav pom cov duab hauv qhov chaw nrog lub logo ntawm Symantec (tus tswv ntawm TLS) thiab TLS. Cov duab no, thaum clicked on, qhib ib pop-up certifying lub genuineness ntawm lub site. Cov tuam txhab xws li Symantec muab cov ntawv pov thawj rau cov websites rau encryption.
Suab hu thiab lwm yam xov xwm kuj tiv thaiv siv qhov kawg-rau-kawg encryption nrog ntau apps thiab cov kev pab cuam. Koj tau txais txiaj ntsig los ntawm tus kheej ntawm encryption tsuas yog siv cov apps rau kev sib txuas lus.
Cov lus piav qhia saum toj kawg nkaus ntawm qhov kawg ntawm cov ntaub ntawv yog qhov yooj yim thiab ua qauv qhia cov ntsiab cai tseem ceeb tom qab, tiam sis hauv kev xyaum, nws yog ntau txoj hauv kev li ntawd. Muaj nyob ntawm ntau cov qauv qhia tawm rau kev muab encryption, tab sis koj yeej tsis xav mus tob.
Koj yuav xav xav txog cov nqe lus nug uas muaj tseeb ntawm koj lub siab tam sim no: Kuv puas xav tau encryption? Zoo, tsis tas, tab sis yog koj ua. Tej zaum peb xav tau encryption tsawg dua peb ua. Nws nyob ntawm seb koj xa tuaj rau hauv koj tus kheej kev sib txuas lus. Yog hais tias koj muaj tej yam yuav zais, ces koj yuav tsum tau thankful rau hav zoov kawg-rau-kawg encryption.
Ntau tus neeg tsis pom nws tseem ceeb rau lawv WhatsApp thiab lwm yam kev apps, thiab lawv tsuas yog muaj kev sib tham nrog phooj ywg thiab tsev neeg. Leej twg thiaj li yuav saib xyuas rau peb thaum muaj ib billions lwm tus neeg tham? Txawm li cas los xij, peb txhua tus xav tau nws thaum ua lub tuam txhab ua lag luam lossis cov lag luam e-commerce hauv online. Tab sis, ces, koj paub, koj tsis tau xaiv. Encryption tshwm sim tsis muaj koj paub, thiab feem ntau cov neeg tsis paub thiab tsis tu thaum lawv cov ntaub ntawv yog encrypted.