Iindlela lokufihla wokhuseleko ulwazi: ingqiqo, iimpawu, izithuba ezingundoqo

Izichazi kusinika ukusondelelana nabanye definition ngamnye lwesemantiki elithi "zokufihlakeleyoComment", ezahlukeneyo kuphela kwiindawo isicelo sayo. Imbonakalo - inzululwazi njani ukukhusela iinkcukacha ngokusebenzisa iindlela ngeendlela, ukuba kuyimfuneko, imida kwi amagunya ukuba alihlole nokusetyenziswa kwayo.

iindlela lokufihla wokhuseleko lolwazi - ke inguqu ulwazi nangokusulela kwayo ngakumbi kumntu ogunyazisiweyo. Umgaqo ezi ndlela ngolu hlobo lulandelayo. umyalezo evulekileyo Primary ngokufihlisa, nizuze uhlobo lwesicatshulwa ezivaliweyo okanye imizobo ebizwa cryptogram. cryptogram Eminye usasazwa ugqithiselwa phezu umzila ephephile okanye engakhuselekanga ekudluliseleni ulwazi ekufumaneni ingongoma. An umsebenzisi ogunyazisiweyo ithwala eguqulweyo ngokubaxwa okanye ukucazulula yomyalezo ezifunyenweyo kwaye ufumana iteksti yokuqala. Ngoko ke, lo iimbalelwano Shirograms umntu ongagunyaziswanga akayi kukwazi ukuyifunda, engayazi into uhlobo icryptographic iindlela zokukhusela ulwazi esetyenziselwa encryption.

Ingcamango ufihlo olungundoqo isoloko isetyenziswa, nto leyo evumela ukuba bazobe ukufana phakathi ulwazi obubhalwe, kunye nenkqubo ikhowudi. ukhuseleko incazelo kolwazi esisetyenziselwe ukuguqula umbhalo iwuse kwaye decrypting ulandelelwano Iweziganeko zabalinganiswa, ekuthiwa isitshixo. Ngenxa yoko, ngokusebenzisa cryptographic japan efanayo weeNgcombolo ezintlantlu kuxhomekeke isitshixo.

Amaqhosha yokuhlelwa kwazo wohlulwe:

• macala, okt umthumeli kwaye ufumana kwinkqubo encryption khowudi yasiwa kumbhalo usebenzisa isitshixo enye, eqinisekisa eziyimfihlo eliphezulu umyalezo ofihliweyo, kodwa kudala iingxaki ekusebenzeni izitshixo kwiinkqubo ezahlukeneyo, apho kukho inani elikhulu labantu;
• yezi zinto, enyanisweni igqalwa izihlangu ezingundoqo, nto leyo inika amaqhosha evalekileyo (private) kunye noluntu.

Umgaqo kwisibini iyi: iqhosha labucala isetyenziselwa ukwenza isitshixo sikawonke, kodwa ayikwazi kuveliswa emva isitshixo sikawonke ezaziwayo. Oku kuqinisekisa ukuba ububhali khangela xa yokudlulisa ulwazi, esayinwe yogesi lwedijithali (EDS).

Lokufihla ukhuseleko ulwazi usebenzisa amaqhosha yezi olusebenzayo ukuba ufihlo ezosulela endaweni ulwazi olugcinwe. Izitshixo zoluntu zezona endaweni utyikityo ngokwesiqhelo kwi-elektroniki (digital), nto leyo ngokubanzi kusetyenziswa kwiinkqubo intlawulo Internet.

iindlela lokufihla wokhuseleko lolwazi kufuneka ukuba kufezekise ezi mfuno zilandelayo:

1. Ukuba cipher ezinzile ekwaziyo withstanding cryptanalysis kwaye ukunika indlela lokuvula yayo kuphela amaqhosha uphendlo alupheli. Ngoko ke, lo iqhosha nokuzimisela amathuba ixhomekeke ubude bayo.
2. Ukuqinisekisa ukuqina inkqubo incazelo bekholosile ukugcina izitshixo ngasese kanye ubuchule awusebenzisi kubo.
3. Ukwenza kubekho umthamo ukwaziswa ukuba ayidluli lo yokuqala.
4. Ukuyeka ubugqwetha kunye nelahleko ulwazi ngenxa iimpazamo xa iwuse kwi khowudi.
5. Ukuqinisekisa ixesha encoding lincinane.
6. Yiba ukuvumelana phakathi ixabiso encryption ixabiso ulwazi lokuqala.

iindlela lokufihla wokhuseleko ulwazi luphawulwa kweelana le cipher, nto leyo umlinganiselo iphambili ngempumelelo. Le ukusebenza indleko kwangethuba okanye ixabiso-mali efunekayo ukuze ufumane i umyalezo original decryptor engekho isitshixo ekwi khowudi. Ngaphandle akukho ubuthathaka e algorithms ufihlo, leyo ngokukhawuleza ibala nengcibi, kwaye zithembeke ngokwaneleyo ubude ephambili, ezi ndleko lukhule.