Isibali sekhodi sehashi XXH-32

I-XXH, eyaziwa nangokuthi i-XXHash, iyi-algorithm ye-hashi esheshayo, engasiyo i-cryptographic eyenzelwe ukusebenza kahle nokusebenza kahle, ikakhulukazi ezimeni lapho isivinini sibaluleke kakhulu, njengasekuminyanisweni kwedatha, amasheke, kanye nenkomba yesizindalwazi. Okuhlukile okwethulwa kuleli khasi kukhiqiza ikhodi ye-hashi engu-32 bit (4 byte), ngokuvamile ebonwa njengenombolo ye-hexadecimal enezinhlamvu ezingu-8.

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-XXH-32 Hash Algorithm

Angisona isazi sezibalo, kodwa ngizozama ukuchaza lo msebenzi we-hash ngisebenzisa isifaniso esingasiqonda ozakwethu abangezona izibalo. Uma ukhetha incazelo yezibalo elungile ngokwesayensi, egcwele, ngiyaqiniseka ukuthi ungayithola kwenye indawo ;-)

Zama ukucabanga nge-XXHash njenge-blender enkulu. Ufuna ukwenza i-smoothie, ngakho wengeza inqwaba yezithako ezahlukene. Into ekhethekile ngale blender ukuthi ikhipha i-smoothie yosayizi ofanayo kungakhathaliseki ukuthi zingaki izithako ozifaka kuzo, kodwa uma wenza ngisho nezinguquko ezincane ezithakweni, uzothola i-smoothie enambitheka ehluke ngokuphelele.

Isinyathelo 1: Hlanganisa Idatha

Cabanga ngedatha yakho njengenqwaba yezithelo ezihlukene: ama-apula, ubhanana, ama-strawberry.

• Uwaphonsa ku-blender.
• Uwahlanganisa ngesivinini esikhulu.
• Kungakhathaliseki ukuthi izithelo zazinkulu kangakanani, ugcina une-smoothie encane, exutshwe kahle.

Isinyathelo sesi-2: Isoso Eyimfihlo - Ukugqugquzela Ngezinombolo "Zomlingo".

Ukuqinisekisa ukuthi i-smoothie (hashi) ayinakubikezelwa, i-XXHash yengeza isithako esiyimfihlo: izinombolo ezinkulu "zomlingo" ezibizwa ngokuthi ama-primes. Kungani ama-primes?

• Basiza ngokuxuba idatha ngokulinganayo.
• Benza kube nzima ukuhlehlisa-unjiniyela izithako zangempela (idatha) kusuka ku-smoothie (hashi).

Isinyathelo sesi-3: I-Speed ​​Boost: Ukuqopha ngobuningi

I-XXHash ishesha kakhulu ngoba esikhundleni sokuqoba isithelo esisodwa ngesikhathi, yona:

• Sika amaqembu amakhulu ezithelo ngesikhathi esisodwa.
• Lokhu kufana nokusebenzisa umshini wokugaya ukudla omkhulu esikhundleni sommese omncane.
• Lokhu kuvumela i-XXHash ukuthi iphathe amagigabhayithi edatha ngomzuzwana - ilungele amafayela amakhulu!

Isinyathelo sesi-4: Ukuthinta Kokugcina: I-Avalanche Effect

Nawu umlingo:

• Ngisho noma ushintsha into eyodwa nje encane (njengokhefana emshweni), i-smoothie yokugcina inambitheka ehluke ngokuphelele.
• Lokhu kubizwa nge-avalanche effect:
  • Izinguquko ezincane = umehluko omkhulu ku-hashi.
  • Kufana nokwengeza iconsi lombala wokudla emanzini, futhi kungazelelwe yonke ingilazi ishintsha umbala.