Isithombe: Ukuboniswa kwe-HAVAL-224/4 Hash Algorithm

Izinguqulo ezitholakalayo zalesi sithombe

Amafayela ezithombe atholakalayo ukuze alandwe ngezansi awacindezelwe kakhulu futhi anesisombululo esiphezulu - futhi ngenxa yalokho, ikhwalithi ephezulu - kunezithombe ezifakwe ezihlokweni nasemakhasini akule webhusayithi, ezilungiselelwe kangcono usayizi wefayela ukuze kuncishiswe ukusetshenziswa komkhawulokudonsa.

Usayizi ojwayelekile (1,536 x 1,024)

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Usayizi omkhulu (3,072 x 2,048)

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Usayizi omkhulu kakhulu (4,608 x 3,072)

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Usayizi omkhulu kakhulu (6,144 x 4,096)

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Usayizi omkhulu ngokwe-comic (1,048,576 x 699,051)

• Isalayisha... ;-)

Incazelo yesithombe

I-infographic ebanzi, yesikhathi esizayo ichaza i-algorithm ye-HAVAL-224/4 hash ngemuva kwebhodi lesekethe elimnyama, elinomugqa. Imidwebo ye-neon enemibala ye-cyan/teal kanye ne-amber igijima emingceleni njengemizila ye-PCB, enamachashazi amancane, izimpawu zokumaka, kanye namaphethini amancane e-binary anezela isimo sobuchwepheshe. Amaphaneli amaningi anamafreyimu acwebezelayo kanye nokukhanya okuthambile, okwenza wonke umfanekiso ube nomuzwa wokuthi "ideshibhodi ye-HUD". Esiqongweni, isihloko esikhulu sithi "HAVAL-224/4 Hash Algorithm," kanye ne-"HAVAL-224/4" ngombala oluhlaza okwesibhakabhaka obandayo kanye ne-"Hash Algorithm" ngombala ophuzi ofudumele.

Umdwebo uhlelwe ngendlela yokuthi ufundeke kusukela kwesobunxele kuya kwesokudla. Ngaphezulu kwesobunxele, iphaneli efakwe uhlaka enesihloko esithi "Umyalezo Wokufaka" ikhombisa inqwaba yamaphepha amhlophe aqoshiwe ngaphezu kwesiqephu esifushane se-binary ("011010110 11011001..."). Umcibisholo ojiyile we-orenji ukhomba phansi ku-"Padding & Length Append," ohlanganisa umugqa othi "Umlayezo + Padding -> Length." Omunye umcibisholo uholela ku-"512-Bit Blocks," equkethe imigoqo emine ehlanganisiwe, enemibala ebhalwe ukuthi "Block 1" kuya ku-"Block 4" (imibala eluhlaza, eluhlaza okwesibhakabhaka, ne-orange), kanye nesihloko esithi "512 Bits Ngayinye.

Isikhungo sigqamisa inqubo yokucindezela. Isihloko esithi "4 Processing Rounds" siphezu kwamathayili amane acwebezelayo abekwe ngokuvundlile: "Umjikelezo 1," "Umjikelezo 2," "Umjikelezo 3," kanye "nomjikelezo 4." Amathayili okuqala, okwesibili, kanye nowesine akhanya ngombala ophuzi, kuyilapho "Umjikelezo 3" ukhanya ngokuluhlaza. Izixhumi nemicibisholo efana nesekethe zigijima phakathi kwamathayili, kanti inkomba ende ngaphansi kwawo ithi "Izinyathelo ezingu-56 Ngomjikelezo Ngamunye," enemigqa emincane ehla njengokungathi ithinta izimpawu eziphakathi.

Ngezansi kwalokho, isihloko esikhulu simemezela "Imisebenzi Engeyona Eqondile engu-16." Umugqa wamabhokisi amancane acwebezelayo ubonisa amalebula omsebenzi "F1," "F2," "F3," "F4," bese kuba "G1" kanye "G4," konke kuxhunywe ngemicibisholo ukukhombisa ukulandelana. Imigqa yomhlahlandlela egobile ekhanyayo ijikeleza ngaphansi, enamachashazi amancane okuhlangana aphakamisa izindlela eziningi ezifaka emisebenzini yakamuva, okuqinisa umqondo wokuxuba okungekho eqondile.

Emaphakathini angezansi, iphaneli ebanzi enesihloko esithi "Keyed Mixing & Bitwise Operations" ifingqa umsebenzi osezingeni eliphansi. Ngaphakathi, amathokheni amancane ayisikwele abhalwe ngamagama (A, B, C, D, E) afana namabhulokhi okubhalisa ahlelwe ngemigqa emibili. Phakathi kwawo kunezimpawu ze-logic nezezibalo, kufaka phakathi ilebula elivelele elithi "+ XOR", kanye nezithonjana ezengeziwe (Σ kanye nezimpawu ezilinganayo) ezisho ukwengezwa okuphindaphindiwe, ukushintshwa, kanye nokuguqulwa kwe-bitwise.

Ngakwesokudla, ipayipi liphela esigabeni esinohlaka olude olunesihloko esithi "Final Hash Output." Ibhokisi le-cyan elikhanyayo lifundeka kanje "HAVAL-224/4 Hash," kanye ne-"224-Bit Digest" ngaphansi kwalo. Umcibisholo o-orenji uwela kunxande omnyama obonisa imigqa eminingana yombhalo wesibonelo we-digest ku-cyan ekhanyayo—izintambo ezinde, eziqoqwe ngamaqoqo ezibukeka njengomphumela we-hexadecimal. Amachashazi amancane akhanyayo kanye nemigqa yokuskena evundlile ihlobisa le ndawo yokukhipha, njengokungathi i-digest ikhishwa ku-terminal. Sekukonke, umklamo usebenzisa imicibisholo eqondisayo, ozimele abakhanyayo, kanye ne-circuitry motifs ukuze kudluliselwe ukugeleza okucacile: umlayezo wokufaka -> i-padding/length append -> amabhlogo angu-512-bit -> imijikelezo emine yokucubungula (izinyathelo ezingu-56 ngasinye) -> imisebenzi engeyona eqondile kanye nokuxubana kwe-bitwise -> i-final 224-bit hash digest.

Isithombe sihlobene: Isibali sekhodi sehashi HAVAL-224/4