Isithombe: I-Tiger-160/4 Hash Algorithm — Ukuboniswa Okusezingeni Eliphezulu | Ipayipi Lokugaya

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

Isithombe siwukubonwa kwesimo sendawo, isitayela se-infographic esibhalwe ukuthi "Tiger-160/4" esichaza ukuhamba komsebenzi we-hash ye-cryptographic ngaphandle kokucwila emininingwaneni yokusetshenziswa. Ukuhlelwa kufundwa kusukela kwesobunxele kuya kwesokudla, kusetshenziswa izimo ezilula, izithonjana, kanye nemicibisholo ukukhombisa ukuthi idatha iba kanjani ingxenyana yosayizi ohleliwe.

Ngakwesobunxele eside, unxande oyindilinga onesihloko esithi "Okufakwayo" uqukethe isithonjana sedokhumenti/sedatha ejwayelekile kanye nemigqa embalwa emifushane ephakamisa "umlayezo" noma "idatha". Umcibisholo onesibindi ukhomba kusuka kule phaneli yokufaka uye esigabeni esilandelayo, lapho umlayezo uboniswa khona uhlukaniswe waba yizicucu eziningi ezifanayo. Lesi sigaba sibhalwe ngokuthi "Ukulungiselela amabhlogo" (noma okufanayo) futhi sibonisa inqwaba encane noma umugqa wamathayili/amakhadi anosayizi ofanayo amele amabhlogo edatha. Amathayili awafakwanga amalebula ngamabomu ngale kwezibambi-ndawo ezingathathi hlangothi (isb., "Ibhloko 1", "Ibhloko 2", "Ibhloko 3", "..."), okugcizelela umqondo wokuqhekeka kunokuba kube yinoma yiluphi usayizi wamabhlogo oqondile.

Kusukela kuma-tile ebhulokhi, imicibisholo eminingana ihlangana ibe yindawo enkulu yokucubungula ephakathi. Lesi siqeshana esiyinhloko siyibhokisi elivelele elibhalwe ukuthi "Inqubo ye-Hashing" noma "Umsebenzi wokucindezela" elinethegi eyengeziwe efana nokuthi "Imijikelezo Eyisifinyezo". Eduze noma ngaphakathi kwebhokisi, isithombe sibonisa ukucubungula okuphindaphindiwe kusetshenziswa umcibisholo omfushane we-loop noma ukulandelana kwama-marker afanayo (isibonelo, amabheji amane ayindilinga noma amachashazi amane amancane) ahambisana namagama anjengokuthi "imijikelezo eminingi" noma "ukuphinda". Umklamo ugwema ngamabomu imininingwane yobuchwepheshe: azikho izinhlanganisela, azikho izibalo, azikho izinguquko zangaphakathi eziqanjwe ngamagama, futhi azikho izinyathelo eziqondile ezibalwe ngale komqondo wezinga eliphezulu wokuphindaphinda.

Ngaphakathi kwebhokisi eliphakathi, ukugeleza kumelelwa yindlela elula yangaphakathi: idatha ingena emaphethelweni angakwesobunxele ebhokisi, idlule endaweni "yokuxuba" enesitayela (evame ukuboniswa njenge-swirl, izimo ezixhumene, noma isethi yemicibisholo ewela), bese iphuma ngakwesokudla. Isithonjana sokuxuba sidlulisa ukusabalala nokuguqulwa ngokubonakalayo, kodwa sihlala sijwayelekile ngakho-ke asinakuphambaniswa nencazelo eqondile.

Ukuze kuqiniswe umqondo wokucubungula okuphindaphindiwe, kuvela isici esincane esiseceleni eduze kwebhokisi eliyinhloko: iphaneli encane ebhalwe ukuthi "Isimo" noma "Isimo sangaphakathi" enezibha ezimbalwa ezingathathi hlangothi noma izikwele, ezixhunywe ngemicibisholo ebhokisini le-hashing. Lokhu kusikisela ukuthi ibhulokhi ngayinye ibuyekeza isimo esishintshayo, kodwa futhi ayinikezi usayizi noma isakhiwo sesimo esithile se-algorithm.

Ngakwesokudla kwesithombe, umcibisholo uhola usuka ebhokisini le-hashing uye kuphaneli yokugcina yokukhipha ebhalwe ukuthi "Output digest" noma "Hash". Okukhiphayo kuchazwa ngokucacile ngokuthi "160-bit" ngendlela elula, futhi okukhiphayo kuboniswa njengentambo ye-placeholder emfushane ye-hexadecimal (isibonelo, "AB12…EF90") ngaphakathi kwe-capsule yesitayela se-monospace. Isibambi sendawo sifaka i-ellipsis ukukhombisa ubude ngaphandle kokuzibophezela ekufometheni okuqondile. Eduze kokukhiphayo, inothi elifushane ligcizelela izakhiwo ezifana "nomphumela wobude obuhleliwe" kanye "nokufaka okufanayo → okukhipha okufanayo" kusetshenziswa izitatimende ezimfushane, ezijwayelekile.

Isitayela sisonke sihlanzekile futhi sesimanje: imibala ethambile nengathathi hlangothi, izinsimbi zomugqa ezihambisanayo, isikhala esimhlophe esanele, kanye nombhalo omncane. Imicibisholo icacile futhi iqondisa, kanti izihloko zesigaba zimfushane. Noma yiziphi izinto zokuhlobisa (njengegridi ezithambile, amaphethini wesekethe abuthakathaka, noma ama-gradients athambile) azinakwa ukuze kugcinwe ukugxila ekugelezeni komqondo. Isithombe sonke sibeka phambili ukufundeka kanye nokunemba komqondo, sethula iTiger-160/4 njengepayipi elivela kudatha yokufaka, ekuphatheni ukuvimba, kuya esigabeni sokucindezela okungaqondakali okunezindilinga eziningi, okuphetha ngokugaya kwe-hash okungu-160-bit—ngaphandle kokushumeka imininingwane engaba enganembile noma edukisayo.

Isithombe sihlobene: Isibali sekhodi sehashi Tiger-160/4