Āhuatanga o ngā pūnaha whakawhiti kōrero hou

I para tuatahi, kia mea enei ariā faaauhia, engari to ratou tikanga tino rerekē.

Kaituhi Ko te tikanga o te tahuri ngā mōhiohio i roto i te tikanga ki te te tiaki i te reira i ngā kaiwhakamahi nesanktsionnovanih. Pūtaiao e tuatapapa i te tikanga me ngā tikanga whakamunatanga raraunga huaina tuhiwhakamuna. Me kï reira e mua pūmau i roto i te tuhiwhakamuna etahi pono ngā hōia: te whakaeke hoariri, waehere, me ētahi atu - ratou tika whakaata te tikanga o te ariā e hāngai ana. Heoi, kupu hōia, e hāngai ana i runga i te wā "waehere" kahore ki te mahi ki te tuhiwhakamuna ariā, no te mea i roto i te tekau tau tata hangaia Tapa ariā - he mara nui pūtaiao e rangahau, me te whanake tikanga o te tiaki ngā mōhiohio i te takanga o te hapa matapōkere i runga i hongere kōrero. Na reira, ka mea "Tapa - ko te momo o te whakamunatanga" ko te ingoa ƒniupepa≈.

He tino hononga Whakawaehere me whakamunatanga, engari ia o enei tukanga ona ake whakaaro kua. kawea mōhiohio waehere e atu i roto i te tikanga ki te hanga i te kōrero kia rite ki etahi ture i roto i te puka e tika ana mō te tuku i runga i te hongere ngā. Ko te matua o tetahi pūnaha whakawaehere ko te momotuhi pāngarau rite tauira tuhi, e hāngai ana i runga i nei e taea e tetahi te whiwhi i tetahi maha o waehere rerekē. Tikanga, nga tikanga tohu aho o ngā kore ā-rua, me te hunga (he taiao taua tuhi ki te whakamahi i ka whakawhitihia me te rokiroki mōhiohio ki rorohiko).

whakamunatanga raraunga - he ara o te tahuri ngā mōhiohio ki te tiaki Hai ki te whakaurunga. Ko te kupu, whakamunatia te karere e na e riro te reira hano tatau, ka ā - ki te noho mārama noa i muri i te whakawhitinga o te awa kōrero, e taea te pāngia e te haruru. Tapa mōhiohio e whakaiti i te huru o te kuputuhi ki te iti te maha o ngā pūāhua (arā, kia kia tino pai waehere), a ki te kitea me te hapa tika i roto i te tuku me te rokiroki o ngā mōhiohio (Tapa kia fakatonutonu).

Na reira, ki te hiahia koe ki te haere i te mōhiohio i runga i te hono tetahi, kia e i te putanga ki te whiwhi pono mōhiohio ngaro Me ki ngā e rua te tukanga faafariuraa, ara:

- karere etahi pūnaha tau (i ētahi wā feunga tahuri ki Whakawhiti te pūnaha ā-rua momotuhi, engari i reira he etahi, hei tauira, huarua, fibonachieva etc);

- karere Whakamuna (reira ko te whānui o ngā tikanga whakamunatanga momo, mai te whakatūnga o waehere tae nga wa onamata);

- riro mai karere whakamuna ki kia whakawaeheretia kia rite ki te putanga he karere kia ahureitia decoded;

- wetewaehere te karere me tautuhi me hapa tika e puta i roto i te tuku o te karere;

- Wetemuna te karere rite ki te whakamunatanga kawea i roto i (mo taua kaituku me te kaiwhiwhi me whakaae tuatahi whakamunatanga tukanga). Ka rite ki te tikanga, ngā tenei tikanga o te tikanga whānui, me te "kī". Ko te kī, ko te huinga o ngā raraunga tautuhi te faafariuraa motuhake o te plurality o huringa KarereHuna;

- whakawhiti karere riro i te pūnaha tau whiwhi ki te taketake.

Ko te kupu, ko te tiaki me te tika tuku o te mōhiohio e rapu he rota o te kaha. I tčnei wā, he hangarau rorohiko kaha nui ohie tenei tukanga, engari e kore te mea te reira tonu taea ki te wetemuna te karere, rawa, ki te he unknown ki te awhina o te hangarau te kī. Nā ki te mau fifi i roto i takere o ngā mōhiohio e mio'i ai, na te whakamahi i taua tikanga Tapa e taea kitea me te whakatika i te hapa.

Na, i runga i te karere tuku kōrero hongere. takina te karere riro te mo örite o te maha o ngā wae: ki te ko ara te maha wae e hanga te whakaaro e reira he kahore hapa, a ka wetemuna te whakakahore i te mati whakamutunga. Ki te he rerekē te maha o ngā waeine, ka tonoa he karere ki te hapa. Ko te ngoikoretanga o tenei tikanga ko e taea ai te reira ki a koutou kitea anake hapa kahore fakatonutonu ratou, i te waehere tāruarua, ko te kore kitea anake, engari papaki ana hoki hapa.

Ko te kupu, ia o nga tikanga e whai ake nei o te waehere kua ona drawbacks, Heoi, te tākaro enei tikanga he faufaa nui i roto i Tapa ariā me ko te pūtake o te hanga i te waehere atu tino. I roto i to tatou wa, kei te whakamahia te waehere Hamming, Nagoya, Reed -Myullera, Hadamard, etc ..

Āhua ciphers pehea ki te te tiaki i ngā mōhiohio mai i te whakaurunga tikanga i reira e maha ngā huarahi e e taea e koe whakarōpū ciphers. Tikanga, whakaaro te te whakarōpūtanga taketake:

he) iti whakamahi ciphers;

b) ciphers whakamahi whānui o tūmatanui-matua;

c) waehere-te faaiteraa i ki te kī tūmataiti.

I roto i 1963, te mathematician American Klod Shennon te whakamahi i te tikanga taua whakawhanakehia ia KarereHuna rangahau pāngarau tāia e i roto i ciphers puāwaitanga katoa wāhanga rite angamaheni ko nga tikanga e whai ake nei o te whakamunatanga rite waehere me ciphers ranu apuhau.

WHAKARĀPOPOTOTANGA KarereHuna purara ko ki te tūari atu puna te hapanga i te mea i roto i wāhi rerekē kuputuhitōkau. Hoki tenei whakaaro, ki te whakauru o te tau tahuti o huānga P, i te mea he kī unknown. Ko te kupu, he rite ki P. te maha o te mau taviri taea

A, no te deciphered te whakamahi i whakauru kōaro. Taua whakamunatanga, ahakoa e kore e pā reira te auau o te pukapuka, engari huna i te auau o bigrams, trigrams, etc .. Ko te ngako o te Mixing KarereHuna ko ki te pā ana i waenganui i te kī me te kuputuhi whakamunatanga ki rave i te reira matatini rite taea. He pai te whakamahi o te wae whakauru o te maha tohu o te tātai reta karere, ahakoa arata'i te reira ki te meka e riro te kī nui roa.

Te paturaa i te cryptology hou rite hāngai he pūtaiao i runga i he fakakātoa 'o nga meka me ngā ariā o te pāngarau, te ahupūngao, ngā mōhiohio ariā , etc .. Heoi, ahakoa te whīwhiwhi, kua whakamahia whānuitia te nui o ariā mua cryptology i roto i te ora o ia rā, pērā i kāri kirihou, ī-mēra, pūnaha utu pēke, me te whakataki o pātengi raraunga, ngā pūnaha pōti hiko, etc ..