Izibonelo ze-Checksum, Sebenzisa Amacala, nezibalo
I-checksum yumphumela wokusebenzisa i-algorithm, ebizwa ngokuthi umsebenzi we- cryptographic hash , kucezu kwedatha, ngokuvamile ifayela elilodwa. Uma uqhathanisa ne-checksum oyenzayo kusuka kwinguqulo yakho yefayela, okunikezwa ngumthombo wefayela, kusiza ukuqinisekisa ukuthi ikhophi lakho lefayela liyiqiniso futhi liphutha mahhala.
I-checksum ibuye ngezinye izikhathi ibizwe ngokuthi isha ishi futhi kaningi kaningi i- hash value , ikhodi ye-hashi , noma i- hash nje.
Isibonelo Sokuhlola Okulula
Umqondo we-checksum noma umsebenzi we-cryptographic hash ungase ubonakale unzima futhi kungenakufanelekela umzamo, kodwa singathanda ukukuqinisekisa nakwehlukile! Ama-Checksums ayinzima kakhulu ukuwaqonda noma ukudala.
Ake siqale ngesibonelo esilula, ngethemba lokuthi sizobonisa amandla amashekeki ukuqinisekisa ukuthi kukhona okushintshile. I-MD5 checksum yale nkulumo elandelayo yinkambo ende yabalingiswa abamele lowo musho.
Lokhu kuyilingo. 120EA8A25E5D487BF68B5F7096440019Ngezinhloso zethu lapha, zilingana ngokulinganayo. Kodwa-ke, yenza ushintsho oluncane, njengokususa isikhathi nje , luzokhiqiza i-checksum ehluke ngokuphelele:
Lokhu yisivivinyo CE114E4501D2F4E2DCEA3E17B546F339Njengoba ubona, ngisho noshintsho oluncane kuleli fayela luzokhiqiza i-checksum ehluke kakhulu, okwenze kucace ukuthi omunye akafani nomunye.
I-Checksum Sebenzisa Ikesi
Ake sithi ulande isibuyekezo esikhulu, njengepakethe yesevisi , ohlelweni osisebenzisa nsuku zonke, njengomhleli wehluzo. Lokhu cishe ifayela elikhulu kakhulu, kuthatha amaminithi amaningana noma ngaphezulu ukulanda.
Uma ulayishiwe, wazi kanjani ukuthi ifayela lilandwe kahle? Kuthiwani uma izingcingo ezimbalwa zishiywa ngesikhathi sokulanda futhi ifayela onayo kukhompyutha yakho okwamanje akuyona into eyayihlosiwe? Ukusebenzisa isibuyekezo kuhlelo olungeyona indlela umthuthukisi owadalile ngayo kungenzeka ukuthi ibangele izinkinga ezinkulu.
Yilapho ukuqhathanisa amasheke angabeka ingqondo yakho kalula. Ucabanga ukuthi iwebhusayithi oyilandile ifayela kusuka ekuhlinzekeni idatha ye-checksum eceleni kwefayela okufanele ilandwe, ungasebenzisa i-checksum calculator (bheka i- Checksum Calculators ngezansi) ukukhiqiza i-checksum kusuka kufayela lakho elilandiwe.
Isibonelo, tshela iwebhusayithi inikeza i-checksum MD5: 5a828ca5302b19ae8c7a66149f3e1e98 yefayili oyilandile. Khona-ke sebenzisa i-checksum yakho yokubala yokukhiqiza ukukhiqiza i-checksum usebenzisa umsebenzi ofanayo we-cryptographic hash, i-MD5 kulesi sibonelo, kufayili kukhompyutha yakho. Ingabe ama-checksums ahlangana? Kuhle! Ungaqiniseka kakhulu ukuthi amafayela amabili afana.
Ingabe ama-checksums awafani? Lokhu kungasho lutho kusuka ekutheni othile uthathe indawo yokulanda ngenye into engalungile ngaphandle kokuthi wazi, ngesizathu esingezansi esinjengokuthi uvule futhi washintsha ifayela, noma uxhumano lwenethiwekhi luphazamiseke futhi ifayela aliqedanga ukulanda. Zama ukulanda ifayela futhi bese udala i-checksum entsha efayeleni entsha bese uqhathanisa futhi.
Ama-Checksums nawo awusizo ekuqinisekiseni ukuthi ifayela oyilandile kusuka kwenye indawo ngaphandle komthombo wokuqala, eqinisweni, ifayela elivumelekile futhi alishintshiwe, ngokungahambi kahle noma ngenye indlela, kusukela ekuqaleni. Vele uqhathanise i-hash oyidala nayo eyatholakala kumthombo wefayela.
Checksum Calculators
Ama-calculators we-Checksum amathuluzi asetshenziselwa ukubala amasheke. Kunezinqwaba ze-checksum calculators ngaphandle, ngayinye isekela isethi ehlukile yemisebenzi ye-hash cryptographic.
Omunye wokubala wamahhala wokuhlola wamahhala yi-Microsoft File Checksum Integrity Verifier, okuthiwa i- fciv yesikhashana. I-Fciv isekela kuphela imisebenzi ye- MD5 ne- SHA-1 ye-hasptographic kodwa iyakwazi ukuthandwa kakhulu okwamanje.
Bheka ukuthi Ungaqinisekisa kanjani ukuthembeka kwefayili ku-Windows ne-FCIV yokufundisa okuphelele. I-Microsoft File Checksum Integrity Verifier wuhlelo lolayini lomyalo kodwa kulula kakhulu ukuyisebenzisa.
Omunye omuhle kakhulu we-checksum wokubala we-Windows ngu-Hasor IgorWare, futhi uyaphathwa ngokuphelele ngakho akudingeki ufake noma yini. Uma ungatholi kahle ngamathuluzi omugqa womyalo, lolu hlelo cishe luyisinqumo esingcono. Isekela i-MD5 ne-SHA-1, kanye ne-CRC32. Ungasebenzisa i-Hasher ye-Igor ukuze uthole i-checksum yombhalo namafayela.
I-JDigest iyimthombo evulekile yomhloli wokuhlola osebenza ku-Windows kanye naku-MacOS ne-Linux.
Qaphela: Njengoba akuwona wonke ama-checksum calculators asekela yonke imisebenzi ye-hash ye-cryptographic, qiniseka ukuthi noma iyiphi i-checksum wokubala oyikhethayo isekela umsebenzi we-hash okhiqize i-checksum ehambisana nefayela oyilanda.