Umehluko phakathi kwe-SHA-1, SHA-2, SHA-256 hashi algorithms
Umehluko phakathi kwe-SHA-1, SHA-2, SHA-256 hashi algorithms
Ake siqale ngokuchaza isifinyezo se-algorithm.
I-algorithm ye-Hash iwumsebenzi wezibalo ohlanganisa idatha ibe usayizi omisiwe, isb uma sithathe noma yimuphi umusho othi "I-Ola inekati" futhi sawusebenzisa nge-algorithm ekhethekile ye-CRC32 sizothola isifinyezo esithi "b165e001". Maningi ama-algorithms futhi wonke anezinjongo ezithile, amanye athuthukiselwe uhlobo lwedatha, amanye awokuvikela.
Kithina, okubaluleke kakhulu yi-SHA algorithms.
I-SHA - imele i-Secure Hashing Algorithm - isetshenziselwa ukuphepha kwe-cryptographic. Isisekelo esibaluleke kunazo zonke se-algorithm ukuthi i-hashi ayinakulungiswa futhi ihlukile. Ukungaguquguquki - idatha yoqobo izohlala iphephile futhi ingaziwa. Okuhlukile - izingcezu ezimbili zedatha azikwazi ukwenza ukhiye ofanayo.
Isiginesha yedijithali ibucayi kakhulu - noma yiluphi ushintsho kudokhumenti luzoshintsha isiginesha. Uma sithatha umusho oshiwo ngenhla "OLA MA KOTA" futhi siwubhale ngosonhlamvukazi, sizothola isifinyezo esihluke ngokuphelele "baa875a6". Esinye isifinyezo sisho ukuthi isiginesha ayisasebenzi.
I-SHA-1 ne-SHA-2 yizinhlobo ezimbili ze-algorithm. Zihlukile ngokwezokwakha nobude bawo. I-SHA-2 yinguqulo ethuthukisiwe ye-SHA-1.
I-SHA-1 ingama-bits angama-160 ubude
I-SHA-2 yenzeka ngobude obuhlukahlukene, imvamisa kakhulu kuma-bits angama-256
Inani elikhulu le-hashi linikeza ukuphepha okukhulu. Inani lezifinyezo ezihlukile zingabonakala njengezinombolo, isb. Kwe-SHA-256 zingu-2 256 inhlanganisela engenzeka. 2 256 leli nani elikhulu lidlula inani lamatshe esihlabathi emhlabeni.
Uma isitifiketi somsebenzisi sisuselwa ku-SHA-1 (futhi siyasebenza, ngoba sakhishwa ngaphambi kukaJulayi 1), isiginesha edalwe (ngemuva kukaJulayi 1) eqinisekiswe nalesi sitifiketi kufanele iqukathe isifinyezo sokuqukethwe okusayiniwe okubalwe ne-SHA-2 algorithm (hhayi i-SHA-1). Ngakho-ke izinhlelo zokusebenza nezinhlelo ze-IT akumele zibhekane nezitifiketi ezintsha kuphela, kepha ngaphezu kwakho konke zakha amasiginesha nezimpawu lapho usebenzisa i-hash ngokuya nge-SHA-2.
Izinhlelo esizifaka vele zivumela namuhla ukwenza imisebenzi yokuthumela nokuqinisekisa amasiginesha kagesi asebenzisa umsebenzi we-SHA-2 hash.
Kuthatha kuphela imizuzu embalwa, ukushaya noma ukubhala ukuthola okwengeziwe ngamasiginesha afanelekayo kagesi.
Ngezansi kusetshenziswe amasethi esivumelwano sokusayinwa ngogesi:
