Indlela nakancane MD5-hashi: A Indlela Simple

Emashumini eminyaka amuva, i-Phaphama! Ka-zobumfihlo nokuphepha kolwazi ayabaluleka ezihambelana nokucinga kwakho. Yingakho imizamo njalo ngemfihlo idatha usebenzisa ubuchule yakamuva. Enye indlela onjena ukulisebenzisa a hashi algorithm MD5 igama. Indlela nakancane MD5-hashi manje futhi kuzoxoxwa. Nokho, ikakhulukazi ngethemba ukuthola ulwazi ku nokugenca amaphasiwedi noma olunye ulwazi oluyimfihlo kufanele akubalwa ngoba kwakunzima inqubo enjalo futhi ngokungemthetho.

Uyini MD5-hashi?

Ngokuvamile, hashing uguqule ukuqonda noma iyiphi idatha string engenayo obude obuthile, amelwe hexadecimal notation 128-bit isisekelo, usebenzisa algorithm ekhethekile.

Ngamanye amazwi, lokhu Inqubo ayikwazi ngokuthi ukubethela. Futhi ngakho asikwazi ukukhuluma kanjani ukuqhaqha MD5-hashi, njengoba zisetshenziswa khona ezinye izindlela lokunikeza ulwazi. Ngaphezu kwalokho, kule ndaba, a ekhethekile Computing uhlelo ukuthi zonke izama ukuqaqa negates.

Indlela nakancane MD5-hashi: imigomo ejwayelekile

Okuhle kakhulu, ukuthi bangenza ngokukhetha okuqukethwe oyifunayo ngezindlela ezintathu eziyinhloko:

• sebentisa sichazamagama;
• isicelo "rainbow amathebula";
• Brutus indlela.

Ukuqala MDA5-hashing ubuchwepheshe yasungulwa ngaleso eMassachusetts Institute of Technology, olwaluholwa uProfesa uRonald L. Rivest. Kusukela ngaleso sikhathi abantu abaningi esetshenziswa njengoba eyodwa yezindlela ukubethela for ukugcina amaphasiwedi okhiye inthanethi, yogesi, kokuhlola ubuqotho yamafayela wesitoreji, ukudala izihlonzi kuwebhu, ukucinga amafayela impinda , njll Futhi, njengoba kunenkolelo ukuqhaqha MD5 hashi-ngqo algorithmic izindlela kunzima kakhulu (kodwa akuyona into engenakwenzeka), ngoba ngisho noshintsho yomunye wabalingiswa e shestnadtsatrichnom ukumelwa akuhileli ngoshintsho okuzenzakalelayo kwabo bonke abanye. Ngakho, kukhona kuphela indlela, bavame ukuyibiza ngokuthi i Brutus (ukuphazamiseka nge force isilo esinonya). Nokho elula inhlanganisela umphumela owaqalwa ngangokunokwenzeka.

Ukusebenzisa imithombo inthanethi

Uma kunjalo kukhona abadinga emagama, ngoba temusho, ungakwazi ukusizakala abaningi inthanethi imithombo amasevisi, anikeza izinkonzo zabo. Nakubukwa jikelele isimiso wokusebenza itholakala lokuthi ukuthi umsebenzisi ungena umugqa ekhethekile ukulandelana site, kuncike emagama, bese oyenza inqubo Ukukhetha.

Uma ulwazi wekhodi kokuqala kusetshenziswa ulimi PHP kusho, kwezinye izimo, ama-online services zingasebenzisa inhlanganisela base_64 encode / base_64 lekwati. Kunoma ikuphi, indlela kuhilela kuphela Ukukhetha kwezimpawu, izinombolo noma izinhlamvu inhlanganisela oyifunayo uma iqhathaniswa database lapho zigcinwa imiphumela izibonelo bebhala ngendlela eyimfihlo.

Indlela nakancane MD5 hashi-ngokwakho?

Abanye abasebenzisi zama wokufunda ikhodi hashi of yayo. Kodwa, njengoba kuvela, kube nzima ngempela. Ukuze lula lokhu inqubo, balisebenzise kangcono ngezidingo esinda ebhekiwe, phakathi okuyinto ivelele ngokucacile zinhlelo ezilandelayo:

• PasswordPro.
• UJohane Ripper.
• UKhayini & Abela.
• "Shtirlits" et al.

Izinhlelo ezimbili zokuqala zenzelwe ukubala inhlanganisela elula ngokufaka esikhundleni inhlanganisela eziyisisekelo ezifana 1212121.

Esesithathu ibonakala ukwazi ukuqhaqha MD5-hashi, kodwa zikwenza lokhu ukuze kancane kakhulu. Nokho, inzuzo yalo ukuthi has a ephelele ithebula generator, ngisho umsebenzisi engaqaliwe nale ukuqonda neze.

"Stirlitz" - isicelo ithakazelisa kakhulu, kodwa lisebenzisa inani elilinganiselwe kakhulu algorithm Computing, phakathi okuyinto ebaluleke kakhulu kukhona ezifana BtoA, UUENCODE, Base64, xxencode futhi binhex.

Ngisho noma lokho sekuhambile, udinga ukusebenzisa Umbuso indawo Brutus BarsWF, okuyinto esheshayo kuzo zonke ezaziwayo futhi ezimweni eziningi ungakwazi ukususa ukubhala MD5-hashi (iphasiwedi, uma ikhona, ungase futhi bafakwe ifomu oyifunayo), ezisebenza nge izigidigidi Computing le-hash yesibili . Nokho, ngisho noma ukusetshenziswa kwalezi isofthiwe kumelwe futhi acabangele isikhathi ukuthi, ngaphandle kwalokho i-algorithm eziyisisekelo, MDA5-Coding engenziwa kanyekanye usebenzisa MD4 noma kwi-IM.

Kodwa naphezu kwazo zonke lokhu, hashing zingatholakala izikhala eziningi. Ochwepheshe abaningi bakholelwa ukuthi ubude ikhodi ngisho ne-128-bit izisekelo liphansi kakhulu, ngakho-ke ukuthuthukiswa software futhi ukwandisa amakhono yezamakhompyutha zanamuhla processor izinhlelo inqubo ukuqaqwa kuba isikhathi esincane oqothulayo, yingakho ukuqhubeka kanye nokusebenzisa lezo zimali kakade ubukeka ngempela inexpedient.

isiphetho

It uhlala ukuze ungeze ukuthi ukuqhaqha MD5-hashi abakwazi kuphela usebenzisa amathuluzi ngenhla. Uma Rummage okuhle kwi-Inthanethi, ungathola lezi zinhlelo kakhulu. Umbuzo uwukuthi: noma zihlanganyela kule nto yanoma yiluphi uhlobo oludingayo? Kubonakala sengathi umsebenzisi isilinganiso sanoma yiluphi uhlelo kukhompyutha ulwazi olunjalo akunakwenzeka ukuba wusizo.