A checksum yog qhov tshwm sim ntawm kev khiav ib qho algorithm, hu ua cryptographic hash muaj nuj nqi, ntawm ib daim ntawm cov ntaub ntawv, feem ntau yog ib cov ntaub ntawv. Sib piv cov checksum uas koj tsim los ntawm koj cov ntaub ntawv version, nrog rau ib qho muab los ntawm qhov chaw ntawm cov ntaub ntawv, pab xyuas kom meej tias koj daim ntawv theej ntawm cov ntaub ntawv yog qhov tseeb thiab tsis muaj qhov yuam kev.
Ib daim checksum kuj qee zaum hu ua hash sum thiab tsawg dua tus nqi hash, hash code, lossis tsuas yog hash.
A Simple Checksum Piv txwv
Lub tswv yim ntawm kev txheeb xyuas lossis kev ua haujlwm cryptographic hash yuav zoo li nyuaj thiab tsis tsim nyog rau kev siv zog, tab sis peb xav hais kom koj ua lwm yam! Checksums yeej tsis nyuaj to taub lossis tsim.
Cia peb pib nrog ib qho piv txwv yooj yim, cia siab tias yuav nthuav tawm lub zog ntawm checksums los ua pov thawj qee yam tau hloov pauv. MD5 checksum rau cov kab lus hauv qab no yog ib txoj hlua ntev ntawm cov cim uas sawv cev rau kab lus.
Nov yog kev sim.
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Rau peb lub hom phiaj ntawm no, lawv yeej tseem ceeb sib npaug. Txawm li cas los xij, txawm tias qhov hloov pauv me ntsis, xws li tshem tawm j ust lub sijhawm, yuav tsim cov checksum sib txawv kiag li.
Nov yog kev xeem
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Raws li koj tuaj yeem pom, txawm tias qhov hloov pauv me me hauv cov ntaub ntawv yuav tsim cov checksum sib txawv, ua kom pom tseeb tias ib qho tsis sib npaug rau lwm tus.
Khoom siv Case
Cia peb hais tias koj rub tawm qhov hloov tshiab software loj, zoo li pob khoom. Qhov no tej zaum yog ib cov ntaub ntawv loj, siv ob peb feeb lossis ntau dua los rub tawm.
Ib zaug rub tawm, ua li cas koj thiaj paub tias cov ntaub ntawv tau txais zoo? Yuav ua li cas yog tias ob peb cov khoom poob thaum lub sij hawm hloov thiab cov ntaub ntawv koj muaj nyob rau hauv koj lub computer tam sim no tsis yog raws nraim li qhov tau npaj tseg? Kev siv qhov hloov tshiab rau qhov kev zov me nyuam uas tsis yog raws nraim li tus neeg tsim khoom tsim nws yuav ua rau koj muaj teeb meem loj.
Qhov no yog qhov sib piv cov tshev tuaj yeem ua rau koj lub siab yooj yim. Piv txwv tias lub vev xaib koj rub tawm cov ntaub ntawv los ntawm muab cov ntaub ntawv checksum nrog rau cov ntaub ntawv kom rub tawm, koj tuaj yeem siv lub tshuab xam zauv checksum (saib "Checksum Calculators" hauv qab no) los tsim cov checksum los ntawm koj cov ntaub ntawv rub tawm.
Piv txwv li, hais lub vev xaib muab daim tshev MD5:5a828ca5302b19ae8c7a66149f3e1e98 rau cov ntaub ntawv koj rub tawm. Tom qab ntawd koj siv koj tus kheej checksum lub laij lej los tsim ib qho checksum siv tib lub cryptographic hash muaj nuj nqi, MD5 hauv qhov piv txwv no, ntawm cov ntaub ntawv hauv koj lub computer. Puas yog checksums sib phim? Zoo heev! Koj tuaj yeem ntseeg siab tias ob cov ntaub ntawv zoo ib yam.
Puas checksums tsis phim? Qhov no tuaj yeem txhais tau dab tsi los ntawm qhov tseeb tias ib tus neeg tau hloov qhov rub tawm nrog qee yam tsis zoo yam tsis tau koj paub, rau qhov laj thawj tsis txaus ntseeg zoo li koj qhib thiab hloov cov ntaub ntawv, lossis kev sib txuas hauv network tau cuam tshuam thiab cov ntaub ntawv tsis tiav rub tawm. Sim rub tawm cov ntaub ntawv dua thiab tom qab ntawd tsim ib daim tshev tshiab ntawm cov ntaub ntawv tshiab, thiab tom qab ntawd sib piv dua.
Checksums kuj tseem muaj txiaj ntsig rau kev txheeb xyuas tias cov ntaub ntawv koj rub tawm los ntawm lwm qhov chaw uas tsis yog lub hauv paus yog, qhov tseeb, cov ntaub ntawv siv tau thiab tsis tau hloov pauv, ua phem lossis lwm yam, los ntawm tus thawj. Tsuas yog piv cov hash koj tsim nrog ib qho muaj los ntawm cov ntaub ntawv qhov chaw.
Checksum Calculators
Checksum calculators yog cov cuab yeej siv los suav cov checksums. Muaj ntau ntawm lawv nyob ntawd, txhua tus txhawb nqa cov txheej txheem sib txawv ntawm cryptographic hash functions.
Ib qho kev xaiv pub dawb yog Microsoft File Checksum Integrity Verifier, hu ua FCIV luv luv. Nws txhawb tsuas yog MD5 thiab SHA-1 cryptographic hash functions, tab sis cov no yog nyob deb ntawm cov neeg nyiam tshaj plaws tam sim no. Saib peb daim ntawm yuav ua li cas txheeb xyuas cov ntaub ntawv ncaj ncees hauv Windows nrog FCIV rau kev qhia ua tiav. Microsoft File Checksum Integrity Verifier yog ib qho kev hais kom ua kab, tab sis siv tau yooj yim heev.
Koj tseem tuaj yeem siv certutil program built-in rau Windows. Qhov no kuj yog cov cuab yeej hais kom ua kab, tab sis nws yooj yim sib npaug los siv nws kom siv tau MD5 cov ntawv txheeb xyuas cov ntaub ntawv. Tsab ntawv ntawd kuj piav qhia yuav ua li cas ua ib yam ntawm Linux nrog md5sum.
Lwm tus lej checksum pub dawb rau Windows yog IgorWare Hasher, thiab nws yog portable kiag li, yog li koj tsis tas yuav nruab dab tsi (tab sis koj yuav xav tau RAR file opener los qhib qhov program). Yog tias koj tsis xis nyob nrog cov cuab yeej hais kom ua kab, qhov cuab yeej no yog qhov kev xaiv zoo dua. Nws txhawb MD5 thiab SHA-1, nrog rau CRC32. Koj tuaj yeem siv nws los nrhiav cov ntawv txheeb xyuas cov ntawv thiab cov ntaub ntawv.
JDigest yog qhov qhib qhov ntsuas ntsuas ntsuas uas ua haujlwm hauv Windows nrog rau ntawm macOS thiab Linux.
Vim tias tsis yog txhua lub tshuab xam zauv checksum txhawb txhua qhov ua tau cryptographic hash ua haujlwm, nco ntsoov tias txhua lub tshuab xam zauv uas koj xaiv los siv txhawb nqa cov haujlwm hash uas tsim cov checksum uas nrog rau cov ntaub ntawv koj tab tom rub tawm.
FAQ
Puas yog tag nrho cov checksums tshwj xeeb?
Yog. Tsuas yog cov ntaub ntawv uas zoo ib yam yuav muaj tib daim tshev. Hloov lwm yam uas tsis yog lub npe ntawm cov ntaub ntawv yuav ua rau muaj qhov sib txawv checksum.
Yuav ua li cas checksum lub laij lej suav checksums?
Checksum lub laij lej siv ntau lub algorithms nrog rau longitudinal parity check, Fletcher's checksum, Adler-32, thiab cyclic redundancy checks (CRCs).
Kuv yuav ua li cas thiaj siv tau ntau daim tshev nyiaj ib zaug?
Koj tuaj yeem tau txais daim tshev ntawm ntau cov ntaub ntawv ib zaug siv MD5 hais kom ua. Qhib lub davhlau ya nyob twg thiab ntaus md5 ua raws txhua lub npe cov ntaub ntawv (sib cais los ntawm qhov chaw), ces nias Enter.
