Ifayela Lokubhala Lokubhala Ukugcinwa Kwemfihlo
Iyini Ukubethela Ifayela Lokugcina?
Ukufakela ukubethela kokugcinwa kokugcina kungumlando wokugcinwa kwedatha, ngokuvamile ngenhloso yokuvikela ulwazi olubucayi ukuthi lubukwe ngabantu abangenakukwazi ukufinyelela kuwo.
Ukubethela kufaka amafayili efomethi evikelwe ehlongozwe ngegama elibizwa ngokuthi i- ciphertext engafundwa ngumuntu, ngakho-ke ayikwazi ukuqondwa ngaphandle kokuyibeka kuqala esimweni esivamile esifundazwe esibizwa ngokuthi ukuphikiswa , noma ukucacisa .
Ukufakela ukubethelwa kokugcinwa kwefayela kuhlukile kunokwaziswa kokudlulisa ifayela , okuyinto yokubethela okusetshenziselwa kuphela uma uhambisa idatha kusuka endaweni eyodwa kuya kwenye.
Ikuphi ukufaka Ifayela Lokugcinwa Kwefayela Lokugcina?
Ukufakela ukubethela kokugcinwa kwekhompiyutha kungase kusetshenziswe uma idatha igcinwa ku-intanethi noma endaweni efinyeleleka kalula, kufana ne- drive yangaphandle noma i- flash drive .
Noma iyiphi isofthiwe ingasebenzisa ukubethela kwefayili yesitoreji kodwa ngokuvamile kuyisici esiwusizo kuphela uma ulwazi lomuntu siqu lugcinwa.
Kuzinhlelo ezingenayo ukubethelwa kwefriji yefayili eyakhelwe ngaphakathi, amathuluzi weqembu lesithathu angenza lo msebenzi. Isibonelo, inamba yamahhala, ama-full disk encryption izinhlelo ezingaphandle lapho ezingasetshenziswa ukubethela yonke idrayivu.
Kuvamile ukubethela okumele kusetshenziswe izinkampani kumaseva abo lapho imininingwane yakho siqu efana nolwazi lokukhokha, izithombe, i-imeyili, noma indawo lugcinwa.
Ifayela Lokubhala Ukubethelwa Kwe-Bit-Rates
I-algorithm ye-AES yokubethela iyatholakala ngezihlukahluka ezahlukene: 128-bit, 192-bit, ne-256-bit. Izinga elincane eliphakeme lizohlinzeka ngolwazi ngokuvikeleka okukhulu kunomncinjana, kodwa ngezinhloso ezingokoqobo, ngisho nokukhethwa kokubhala okubhaliwe kwe-128-bit kukwanele ngokuphelele ekulondolozeni ulwazi olulondekile lwe-digital.
I-Blowfish enye enye i-algorithm eqinile yokubethela engasetshenziselwa ukugcina idatha ngokuphepha. I-Blowfish isebenzisa ubude obuyinhloko noma yikuphi kusuka kumabhithi angu-32 kuya ku-448 bits.
Umehluko omkhulu phakathi kwala mazinga amancane wukuthi amasayizi ayisihluthulelo asele asebenzisa ama-rounds amaningi kunamancane. Isibonelo, ukubethela kwe-128-bit isebenzisa imijikelezo engu-10 ngenkathi ukubethelwa kwe-256-bit isebenzisa ama-round round angu-14, futhi i-Blowfish isebenzisa ama-16. Ngakho-ke ama-rounds angu-4 noma angu-6 asetshenziselwa ubukhulu bomkhawulo obude, okuhumusha ekuphindaphindiwe okuphindaphindiwe ekuguquleni ukuphikisana kuya ku-cliphertext. Ukuphindaphindiwe okuningi okwenzekayo, okwenziwe kakhulu kwedatha kuba, okwenza kube nzima nakakhulu ukuphula.
Kodwa-ke, nakuba ukubethela okungama-128-bit akuphindaphindi umjikelezo izikhathi eziningi njengamanye amazinga amancane, kusalokhu kuphephile kakhulu , futhi kungathatha inani elikhulu lokucubungula amandla kanye nesikhathi esiningi kakhulu sokusebenzisa ubuchwepheshe bwanamuhla.
Ukubethela Ifayela YeSitoreji Ne-Software Backup
Cishe zonke izinsizakalo zokulondoloza i-intanethi zisebenzisa ukubethela kwefayili yesitoreji. Lokhu kuyadingeka ucabange ukuthi idatha yangasese efana namavidiyo, izithombe, namadokhumenti agcinwa kumaseva afinyeleleka nge-intanethi.
Uma kubhalwe ngekhodi, idatha ayikwazi ukufundwa yinoma ubani ngaphandle kokuthi iphasiwedi isetshenziselwe ukuyibethela isetshenziselwa ukuguqula ukubethela, noma ukuyiqeda, ukukunika amafayela.
Amanye amathuluzi wokulondoloza okungaxhunyiwe ku-intanethi nawo asebenzisa ukubethela kwefayili yokugcina ifayela ukuze amafayela owasibuyisela kudrayivu ephathekayo, njenge- hard drive yangaphandle, i-disc, noma i-flash drive, ayifomu ifomu noma ubani onayo idrayivu angabheka ku.
Kulesi simo, kufana nokulondoloza okune-intanethi, amafayela afundiwe ngaphandle kokuthi isofthiwe efanayo, ihambisane nephasiwedi yokumisa kabusha, isetshenziselwa ukubuyisela amafayela emuva kokulahla.