Njira Cryptographic chitetezo mderali: lingaliro, makhalidwe, m'malo kiyi

Otanthauzira kutipatsa pafupi wina ndi mnzake zamalankhulidwe tanthauzo la mawu akuti "cryptography", anasiyana yekha m'madera a tanthauzo lake. Cryptography - nzeru za momwe angatetezere zambiri kudzera njira zosiyanasiyana, ngati n'koyenera, malire a mphamvu kuti muone ndi ntchito zake.

njira Cryptographic chitetezo mfundo - ndi kusintha kwa mauthenga kufala wake zina munthu udindo. Mfundo mwa njira zimenezi ndi iyi. Pulayimale lotseguka encrypted uthenga, kukhala mawonekedwe a m'lemba chatsekedwa kapena zithunzi otchedwa cryptogram. cryptogram ena opatsirana pa malo kapena osatetezeka njira akupereka mauthenga kulandira mfundo. An wosuta ovomerezeka amanyamula osiyanitsidwa kapena decoding cha uthenga umene analandira ndi kulandira plaintext pachiyambi. Choncho, kudutsana Shirograms munthu wamba sangathe kuwerenga izo, osadziwa chimene mtundu wa cryptographic njira chitetezo mudziwe ntchito kubisa.

Lingaliro la cryptography kiyi amagwiritsidwa ntchito zimene zimathandiza kuti Pali kufanana pakati pa mfundo encrypted, ndi dongosolo wolemba pulogalamu. chitetezo Cryptographic wa mudziwe ntchito encrypting ndi decrypting zinayendera wapadera chikhalidwe, wotchedwa kwambiri. Choncho, pogwiritsa ntchito chimodzimodzi cryptographic chifukwa aligorivimu kubisa zimadalira kwambiri.

Chinsinsi cha gulu lawo lagawidwa:

• symmetrical ie sender ndi wolandila m'kati kubisa ndi decryption ntchito makiyi woterewu umene umaonetsera chinsinsi mkulu wa uthenga encrypted, koma amalenga mavuto kugwira ntchito makiyi mu machitidwe osiyana, pomwe ambiri owerenga;
• asymmetric Ndipotu amaona awiri ofunika, amene amathandiza chatsekedwa (payekha) ndi anthu makiyi.

Mfundo awiri mfundo yofunika: kiyi payekha ntchito kupanga kiyi anthu, koma sangathe kwaiye ku chinsinsi kudziwika anthu. Izi zipangitsa kuti kutsimikizika pa onani pamene posamutsa zambiri, yolembedwa ndi pakompyuta digito siginecha (EDS).

Cryptographic mudziwe chitetezo ntchito makiyi asymmetric ochiza encrypting opatsirana m'malo mfundo kusungidwa. Mafungulo anthu abwino m'malo siginecha mwachizolowezi pa kompyuta (digito), amene ankagwiritsa ntchito mu kachitidwe malipiro Internet.

njira Cryptographic chitetezo mudziwe ayenera kukumana zofunika zotsatirazi:

1. Kukhala khola cipher angathe komabe cryptanalysis ndi kupereka njira ya kutsegula ake okha ndi makiyi zochuluka kufufuza. Choncho Mwina mtima kiyi zimadalira kutalika kwake.
2. Kuonetsetsa durability a dongosolo cryptographic ndi adzatsekeredwa kasungidwe makiyi chinsinsi ndi ma aligorivimu si ntchito.
3. Kupanga ndi buku la chokhudza zomwe si upambana wapachiyambi.
4. Kuthetsa kupotoza ndi imfa ya mudziwe chifukwa cha zolakwa pamene encrypting.
5. Kuonetsetsa osachepera kabisidwe nthawi.
6. Ndi kugwirizana pakati pa mtengo kubisa ndi mtengo wa mfundo koyamba.

njira Cryptographic chitetezo mfundo yodziwika ndi kulimbikira cipher, ndilo muyeso waukulu wa chidacho. Mwachangu Izi ndi ndalama mu nthawi kapena phindu la ndalama wofunikila apeze decryptor Uthenga wapachiyambi, pakalibe fungulo ndiyotengera. Zoperekedwa palibe zofooka ma aligorivimu kubisa, amene mwamsanga linaŵerengera amisiri, ndi odalirika okwanira kiyi m'litali, ndalama izi kukula kwambiri.