Vanhu vazhinji havazvizivi, asi tinovimba nemavhura ekubatanidza nguva dzose patinenge tichienda paIndaneti. Pamusoro pezvinhu zvose kubva kubhengi nekutengesa kutarisa email, tinoda zvekutengesa kweInternet kuti tidzivirirwe zvakanaka, uye kunyorwa kunobatsira kuita izvozvo.
Chii chinonzi Network Encryption?
Kuchengetedza inzira yakakurumbira uye inobudirira yekuchengetedza nhepfenyuro data. Iyo nzira yekuvhara pasi inovanza data kana zviri mukati mamashoko nenzira yakadai iyo ruzivo rwepakutanga rinogona kuwanikwa chete kuburikidza nehutano hwekubvisa . Encryption uye decryption inowanzogadzirisa maitiro mu cryptography - yesayenzi yekuraira mushure mekutaurirana kwakachengeteka.
Zvinyorwa zvakasiyana-siyana zvakasiyana uye zvinyorwa zvinoshandiswa (zvinonzi algorithms ) zviripo. Kunyanya paInternet, zvakaoma zvikuru kuchengetedza tsanangudzo dzezvigadziriswa izvi zvakavanzika zvechokwadi. Vanyori vanonyatsonzwisisa izvi uye vanogadzirisa maitiro avo ekuti vagone kushanda kunyange kana tsanangudzo yavo yekushandiswa yakaitwa pachena. Kunyanya kushandura maitiro ekugadzirisa hunobudirira huno hutachidziviriro kuburikidza nekushandisa makiyi .
Chii chinonzi Encryption Key?
Mumakombiyuta cryptography, kiyi ndeyekutevedzana kwenguva refu kwezvibato zvinoshandiswa nekinyorwa uye decryption algorithms. Semuenzaniso, zvinotevera zvinomiririra kutengesa 40-bit key:
00001010 01101001 10011110 00011100 01010101
An encryption algorithm inotora shoko rekutanga risina kunyorwa, uye kiyi yakafanana nechapamusoro, uye inoshandura shoko rekutanga remasvomhu zvichibva pane zvigetsi zvekugadzira mutsva wemashoko akadzikiswa. Mukutaura, chirevo chekushandura chirevo chinotora shoko rakavharidzirwa uye rinoridzorera kuchimiro chayo chepakutanga uchishandisa rimwe kana zvimwe zvitubu.
Mamwe mazwi echicheptographic anoshandisa chinhu chimwechete chekunyora uye kubvisa. Chino chakadaro chinofanira kuchengetwa chakavanzika; kana zvisina kudaro, ani zvake aive nezivo yekiyi yaishandiswa kutumira mharidzo inokwanisa kupa ichocho chinhu che decryption algorithm kuverenga iyo mharidzo.
Mamwe maitiro ekushandisa anoshandisa chinhu chimwe chekuvharidzira uye chechipiri, chinhu chakasiyana chekushandura. Nheyo yekuvharidzira inogona kuramba yakasununguka munyaya iyi, sezvo pasina ruzivo rwemashoko makuru ekudhindwa haagoni kuverengwa. Mitambo yakakurumbira yekuchengetedzwa kweIndaneti inoshandisa iyi inonzi inonzi key key encryption.
Encryption pa Home Networks
Wi-Fi mishonga yepamusha inotsigira mitemo yakawanda yekuchengetedza inosanganisira WPA uye WPA2 . Kunyange zvazvo iyi isiri iyo yakasimba kudarika maitiro ekugadzirisa aripo, ivo vakakwana kuchengetedza mishonga yemisha kubva pakuve nemigwagwa yavo yakatarwa nekunze.
Sarudza kuti ndeapi uye kuti ndeupi rudzi rwekuvharidzira runoshanda pane imwe imba yekutengesa nekutarisa redband router (kana imwe sangano remagedhi ).
Encryption paInternet
MaWebhu anobudisa maSvondo anoshandisa shanduro yeSecure Sockets Layer (SSL) kuitira kuchengetedzwa kwepaIndaneti zvakachengeteka. SSL inoshanda kuburikidza nokushandisa kiyi yepachena ye encryption uye imwe yakasiyana yega yega yekubvisa. Paunoona chirevo cheHTTPS pachikanda che URL mu browser yako, inoratidza SSL encryption iri kuitika mushure mezviitiko.
Basa reKiiyo Yakawandisa uye Network Network
Nokuti zvose zviri zviviri WPA / WPA2 uye SSL zvinyorwa zvinoenderana zvikuru nezvisungo, imwechete inowanikwa yehutano hwekunyoresa mumatare maererano nehukuru hukuru - nhamba yezvibhakera mune kiyi.
Kutanga kushandiswa kweSSSL muNetscape neInternet Explorer Web browsers makore akawanda apfuura zvakashandisa 40-bit SSL kuverengera maitiro. Kutanga kushandiswa kweWEP kumapurogiramu emisha yakashandiswa 40-bit encryption keys zvakare.
Zvinosuruvarisa kuti, 40-bit encryption yakava nyore zvikuru kududzira kana "kutyisa" nekufungidzira chinodiwa chekudodha. Nzira imwe chete yekujekesa in cryptography inonzi brute-force decryption inoshandisa pakombiyuta kushandiswa kunyatsodzika kuverenga uye kuedza zvose zvinogona kuitika imwe neimwe. 2-bit encryption, somuenzaniso, inosanganisira zviyero zvina zvinokwanisika zvingafungidzirwa:
00, 01, 10, uye 11
3-bit encryption inosanganisira hutatu hunokwanisa, 4-bit encryption 16 inokwanisika maitiro, nezvimwe zvakadaro. Mathematically speaking, 2 n inokwanisika mitemo iripo pane n-bit.
Kunyange zvazvo 2 40 inogona kuratidzika senhamba huru kwazvo, haisi yakaoma zvikuru kumakombiyuta emazuva ano kuti aparadzanise izvi zvakasanganiswa munguva pfupi. Vavaki vekuchengetedza software vakaziva kudiwa kwekuwedzera simba rekunyora uye vakatamirwa ku 128-bit uye yakakwirira encryption levels makore akawanda apfuura.
Kuenzaniswa ne 40-bit encryption, 128-bit encryption inopa 88 mamwe mabhiti ehukuru urefu. Izvi zvinoshandura ku 2 88 kana kupera
309 485 009 821 335 068 724 781 095
zvimwe zvinosanganiswa zvinotarisirwa kuti zvive zvechisimba. Zvimwe kushandiswa kwepamusoro pamadivayiri zvinoitika kana uchifanira kunyora uye kubvisa chitarisiko chemashoko nemakona aya, asi zvikwereti zvinopfuura kupfuura mari.