keelaka marpidi

kii marpidi (kii establishment kooda) anedi guudha lipi saastramlo oka paddhati, dheeni dwara guudha lipi shaastra keelu rendu paarteela madhya marpidi cheyabadataayi, idhi guudha lipi shaastra algorithm upayoginchadaaniki anumatistundi.
pampinavaaru mariyu sweekarinchevaaru gupteekarinchina sandeshaalanu marpidi chesukovalanukunte, pampavalasina sandeshaalanu gupteekarinchadaaniki mariyu andukunna sandeshaalanu decrypt cheyadaaniki prati okkaroo sannaddham ayi undaali. vaariki avasaramaina parikaraala swabhaavam vaaru upayoginche encryption technickpy aadharapadi untundi. vaaru kodnu upayogiste, iddarikee oke code book coppy avasaram. vaaru saifarnu upayogiste, vaariki tagina keelu avasaram avtayi. saanketikalipi oka samaroopa kii saanketikalipi ayithe, rendintikee oke kii yokka coppy avasaram. idhi public/private kii propertytho asamaana kii saifar ayithe, rendintikee marokari public kii avasaram.
marpidi chaanal.
kii marpidi inn-byaand ledhaa avt-off-byaand cheyabadutundi.
pradhana marpidi samasya.
surakshitamaina communication chaanelnu erpaatu cheyadaaniki avasaramaina keelu ledhaa itara samacharanni marpidi chese maargaalanu kii exchange samasya vivaristundi, tadwara marevaruu kaapeeni pondaleru. chaaritraatmakamgaa, public-kii cryptography (asymmetrical cryptography) aavishkaranaku mundu, cemetric-kii cryptography sandeshaalanu gupteekarinchadaaniki mariyu decrypt cheyadaaniki oke keeni upayoginchindi. rendu paarteelu gopyamgaa communicate cheyadaaniki, vaaru modata rahasya keeni marpidi chesukovali, tadwara prati paksham pampe mundu sandeshaalanu gupteekarinchagaladu mariyu andukunna vaatini decrypt cheyagaladu. eee prakriyanu kii exchange antaaru.
cemetrical cryptography ledhaa single-kii cryptographytho unna vistrutamaina samasya emitante, viswasaneeya courier, dautya sanchulu ledhaa edainaa itara surakshita communication chhaanel dwara communicate cheyadaaniki rahasya kii avasaram. rendu paarteelu surakshitamaina prarambha kii maarpidini erpaatu cheyalekapothe, prarambha kii marpidi samayamlo keeni pondina moodava paksham sandeshaalanu addaginchi, decrypt chese pramaadam lekunda vaaru surakshitamgaa communicate cheyaleru.
public-kii guudha lipi shaastram rendu-kii vyavasthanu upayogistundi, indulo public mariyu private keelu untaayi, ikkada sandeshaalu oka keetho gupteekarinchabadataayi mariyu maroka keetho decrypt cheyabadataayi. idhi enchukunna guudha lipi shaastra algorithm meeda aadharapadi untundi, yea kii-public ledhaa private-sandeshaalanu gupteekarinchadaaniki upayoginchabadutundi mariyu edhi decrypt cheyadaaniki. udaaharanaku, udaaharanaku, sandeshaalanu decrypt cheyadaaniki private kii upayoginchabadutundi, ayithe digital signature algorithm (dSA) loe, vaatini praamaaneekarinchadaaniki private kii upayoginchabadutundi. public keeni asurakshita chaanella dwara pampavacchu ledhaa publicklo panchukovachhu; private kii daani yajamaniki matrame andubaatulo untundi.
defy-hellman kii exchange anie piluvabade encryption keeni bahirangamgaa communicate cheyavachu, endukante idhi encrypted sandeshaala gopyataku etuvanti pramaadam kaliginchadu. oka paksham keelanu maroka pakshaaniki marpidi chestundi, akkada vaaru keeni upayoginchi sandeshaalanu gupteekarinchi, saanketikalipi vachananni tirigi pampavacchu. decryption kii matrame-eee sandarbhamlo, idhi private kii-aaa sandesaanni decrypt cheyagaladu. defy-hellman kii marpidi samayamlo yea samayamloonuu rajipade pramaadam unna edainaa sunnitamaina samacharam, cemetrical kii maarpidiki viruddhamgaa untundi.
gurtimpu.
suutrapraayamgaa, oka public kii vaastavaaniki daani yajamani anie bhaavinche daaniki chendinadani nirdhaarinchukovadam (ledhaa kaneesam nammakamgaa) matrame migili unna samasya. aneka vidhaluga marokari gurtimpunu 'mosaginchadam' saadhyame kabatti, idhi chinna vishayam ledhaa sulabhamgaa parishkarinchagala samasya kaadu, mukhyamgaa palgonna iddaru viniyogadaarulu eppuduu kalusukokapoyina, okarinokaru gurinchi aemee teliyakapoyina.
defy-hellman kii marpidi.
marpidi, whitefield defy mariyu martin hellman, hellman yokka Phd vidyaarthi ralf merclay abhivruddhi chesina bhavanala aadhaaramgaa defy-hellman kii exchange (D-H) anae guudha lipi shaastra niyamaavalini prachurinchaaru. pratyarthi aaa communication chaanelnu paryaveekshistunnappatiki rahasya keelanu surakshitamgaa marpidi chesukovadaniki protocol viniyogadaarulaku veelu kalpistundi. ayithe, dii-hetch kii marpidi protocol, dhruvikarananu swayamgaa parishkarinchadu (i.ii. communication chhaanel yokka maroka chivaralo vyakti ledhaa 'entity' yokka vaastava gurtimpu gurinchi khachitamgaa undatamlo samasya). pratyarthi communication chaanelloni sandeshaalanu (myaan-inn-dhi-middle ledhaa mittom daadulu) paryaveekshinchi, marchagaliginappudu mariyu kaagitam yokka nalgava vibhaagamlo prasanginchinappudu praamaaneekarana keelakam.
praja keelaka moulika sadupayalu.
gurtimpu dhruvikarana samasyaku parishkaramga public kii infrastructure (pii. keey. ii) pratipaadinchabaddaayi. vaari atyanta saadhaarana amalulo, prati viniyogadaaru anni paarteelache viswasinchabade "certificate authority" (ca) kii, digital certificate kosam darakhaastu chestaaru, idhi itara viniyogadaarulaku gurtimpu yokka hanikaram kaani praamaaneekaranagaa panichestundi. ca raajee padakapothe moulika sadupayalu surakshitamgaa untaayi. ayithe, adhi unte, chaalaa mandhi pisilu dhruvapatraalanu upasamharinchukune marganni andistaayi, tadwara itara viniyogadaarulu vaatini viswasincharu. raddu cheyabadina dhruvapatraalanu saadhaaranamgaa dhruvapatraala upasamharana jaabitaalalo unchutaaru, vatiki edainaa dhruvapatraanni saripolchavachhu.
aneka deshaalu mariyu itara adhikara paridhulu eee digital dhruvapatraalaku (ekkuva ledhaa takkuva) chattaparamaina prabhavanni ivvadam dwara pisilanu prothsahistuu chattanni aamodinchaayi ledhaa nibandhanalanu jaarii chesaayi (digital santakam chudandi). aneka vaanijya samsthalu, alaage konni prabhutva vibhagalu ituvanti dhruvikarana patraalanu erpaatu chesaayi.
idhi samasyanu parishkarinchadaaniki aemee cheyadu, endukante yea nirdishta vyaktiki ca yokka viswasaneeyata ippatikee haamii ivvabadaledu. idhi adhikara bhranti nundi vacchina vaadana yokka oka roopam. nijamaina viswasaneeyata kosam, certificate ca kii chendinadani vyaktigata dhruvikarana mariyu capi nammakanni sthaapinchadam avasaram. idhi saadhaaranamgaa saadhyam kaadu.
adhikara prabhutvaalu "national cases" anie pilavabade vaatini sthaapinchaalani pratipaadinchina sandarbhaalu unnaayi, dheeni dhruvikarana patraalu pourula parikaraallo vyavasthaapinchadaaniki tappanisari mariyu okasari vyavasthaapinchabadina mariyu nammadaginavi, gupteekarinchina internet traafiknu paryaveekshinchadaaniki, addukovadaniki, savarinchadaaniki ledhaa nirodhinchadaaniki upayoginchavacchu.
atuvanti vishayaalaku kotta vaariki, eee erpaatlu "eee public kii eee viniyogadaaruku chendinadi" anie electronic notary aamodaluga uttamamgaa bhaavistaaru. notary aamodaala maadirigaane, atuvanti haameello tappulu ledhaa aparthalu undavacchu. adanamgaa, notary kooda nammadaganidi kaavacchu. vividha rakaala certificate adhikaarulache aneka unnata sthaayi praja vaiphalyaalu unnaayi. 
trust yokka web.
sambhaavita paridhi yokka maroka chivara trust vyavastha yokka web, idhi kendra dhruvikarana patra adhikaarulanu puurtigaa nivaaristundi. prati viniyogadaarudu aaa dhruvikarana patraanni upayoginche mundu maroka viniyogadaaru nundi dhruvikarana patraanni pondadam baadhyata. pii. zii. pii mariyu zii. pii. zii (open pii. zii. pii internet pramaanam amalu) atuvanti trust mechanism yokka webnu upayogistaayi.
sanketapadam-dhruveekarinchabadina kii oppandam.
password-praamaaneekarinchabadina kii aggrement algorithamlu viniyogadaaru password parignaanaanni upayoginchi cryptographic kii maarpidini nirvahinchagalavu.
quantum kii marpidi.
quantum kii pampinhee daani bhadratanu nirdhaarinchadaaniki quantum bhouthika shaastram yokka konni lakshanaalanu upayoginchukuntundi. quantum sthithi yokka pariseelanalu (ledhaa kolatalu) aaa sthithilo bhangam kaligistaayi anae vaastavam meeda idhi aadharapadi untundi. aneka vyavasthalalo, eee aatamkaalanu receiver sabdam vale gurtinchagaladu, idhi madhya-madhya daadulanu gurtinchadaaniki veelu kalpistundi. quantum mechanics yokka khachitatvam mariyu paripuurnatatoe paatu, protocol alis mariyu baab madhya dhruveekarinchabadina chhaanel labhyatanu oohistundi.

