Isibali sekhodi sehashi Snefru-256

Umsebenzi we-hash we-Snefru uwumsebenzi we-hash we-cryptographic owaklanywa nguRalph Merkle ngo-1990. Ekuqaleni wawuhloselwe njengengxenye yokuthunyelwa kwi-National Institute of Standards and Technology (NIST) ngesikhathi semizamo yokuqala yokwenza ama-algorithms e-hash avikelekile abe sezingeni elifanayo. Nakuba ungasetshenziswa kabanzi namuhla, i-Snefru ibalulekile ngoba yethula imibono eyathonya imiklamo ye-cryptographic yakamuva.

Ekuqaleni i-Snefru yayisekela osayizi bokukhipha abaguquguqukayo, kodwa inguqulo eyethulwe lapha ikhiqiza umphumela ongu-256 bit (ama-byte angu-32), ovame ukubonakala njengenombolo ye-hexadecimal enamadijithi angu-64.

Ukudalulwa okuphelele: Angibhalanga ukusetshenziswa okuqondile komsebenzi we-hashi osetshenziswe kuleli khasi. Kungumsebenzi ojwayelekile ofakwe nolimi lokuhlela lwe-PHP. Ngenze isixhumi esibonakalayo sewebhu kuphela ukuze ngisenze sitholakale esidlangalaleni lapha ukuze kube lula.

Mayelana ne-Snefru Hash Algorithm

Angisiye isazi sezibalo noma isazi se-cryptographer, kodwa ngizozama ukuchaza lo msebenzi we-hash ngendlela eqondakalayo kwabanye ochwepheshe bezibalo. Uma ukhetha incazelo enzima yezibalo nenembile ngokwesayensi, ngiyaqiniseka ukuthi ungayithola kwenye indawo ;-)

Nakuba i-Snefru ingasabhekwa njengephephile futhi efanelekile ezinhlelweni ezintsha, iyathakazelisa ngezizathu zomlando, ngoba imiklamo yayo yathonya imisebenzi eminingi ye-hash yakamuva esasetshenziswa.

Ungacabanga nge-Snefru njenge-blender enamandla amakhulu eyenzelwe ukuxuba nokusika izithako kuze kube yilapho ungasakwazi ukubona okufakiwe kwasekuqaleni, kodwa njengayo yonke imisebenzi ye-hash, izohlala inikeza okuphumayo okufanayo kokufakwayo okufanayo.

Lena inqubo enezinyathelo ezintathu:

Isinyathelo 1: Sika Izithako (Idatha Yokufaka)

• Okokuqala, usika izithako zakho zibe yizicucu ezincane ukuze zingene ku-blender. Lokhu kufana nokuphula idatha ibe amabhlogo.

Isinyathelo 2: Ukuxuba Ama-Round (i-Blender ngesivinini esihlukile)

• I-Snefru ayihlanganisi kanye kuphela. Yenza ukuxuba okuningana - njengokushintsha phakathi kokunquma, ukuhlanza, kanye nokushaya - ukuqinisekisa ukuthi konke kuxutshwe kahle kakhulu.
• Kuwo wonke umjikelezo, i-blender: Ivuselela ngezindlela ezahlukene (njengokujika i-smoothie ibheke phansi). Ingeza "ukusonta" okuyimfihlo (njengokunisela okuncane kwezinongo ezingahleliwe) ukuze kwenze kube nzima nakakhulu ukubikezela ingxube. Ishintsha ijubane ukuze ivuselele ngendlela ehlukile isikhathi ngasinye.

Isinyathelo 3: I-Smoothie Yokugcina (I-Hash)

• Ngemva kokuxuba okunamandla izikhathi ezingu-8, uthela i-smoothie yokugcina. Lena yi-hash - ingxube ebukeka iyingqayizivele exutshwe ngokuphelele.

Ukufunda Okuqhubekayo

Uma ukujabulele lokhu okuthunyelwe, ungaphinda uthande lezi ziphakamiso:

• Isibali sekhodi sehashi Fowler-Noll-Vo FNV1a-64
• Isibali sekhodi sehashi XXH-128
• Isibali sekhodi sehashi CRC-32C