{"id":91474,"date":"2023-05-02T07:41:00","date_gmt":"2023-05-02T07:41:00","guid":{"rendered":"https:\/\/wp-staging.sproof.com\/ako-funguje-kvalifikovany-digitalny-podpis\/"},"modified":"2025-10-06T14:37:23","modified_gmt":"2025-10-06T14:37:23","slug":"ako-funguje-kvalifikovany-digitalny-podpis","status":"publish","type":"post","link":"https:\/\/wp-staging.sproof.com\/sk\/ako-funguje-kvalifikovany-digitalny-podpis\/","title":{"rendered":"Ako funguje kvalifikovan\u00fd digit\u00e1lny podpis?"},"content":{"rendered":"\n<p>Digit\u00e1lny podpis je nefal\u0161ovate\u013en\u00fdm ekvivalentom vlastnoru\u010dn\u00e9ho podpisu. Za predpokladu, \u017ee aj digit\u00e1lne generovan\u00e9 podpisy s\u00fa v s\u00falade s predpismi stanoven\u00fdmi v nariaden\u00ed eIDAS. Potom je digit\u00e1lny podpis nielen odoln\u00fd vo\u010di fal\u0161ovaniu, ale aj stopercentne pr\u00e1vne platn\u00fd.    <\/p>\n\n<p>U mnoh\u00fdch \u013eud\u00ed v\u0161ak t\u00e1to t\u00e9ma st\u00e1le vyvol\u00e1va ot\u00e1zky a neistotu. Je m\u00f4j podpis bezpe\u010dn\u00fd? M\u00f4\u017ee by\u0165 m\u00f4j podpis sfal\u0161ovan\u00fd? Ako sa m\u00f4\u017eem uisti\u0165, \u017ee sa podp\u00edsala spr\u00e1vna osoba?     <\/p>\n\n<p>Aby sme mohli odpoveda\u0165 na tieto a \u010fal\u0161ie ot\u00e1zky, v tomto \u010dl\u00e1nku sa budeme zaobera\u0165 t\u00fdm, ako mo\u017eno platne digit\u00e1lne podp\u00edsa\u0165 dokument a \u010do je na to potrebn\u00e9.<\/p>\n\n<p><\/p>\n\n<h2 class=\"wp-block-heading\">To umo\u017e\u0148uje bezpe\u010dne digit\u00e1lne podp\u00edsa\u0165 elektronick\u00fd dokument<\/h2>\n\n<p><strong>Rozl\u00ed\u0161enie:<\/strong><\/p>\n\n<p class=\"has-background\" style=\"background-color:#f6f8f9\"><strong>Digit\u00e1lne podpisy sa<\/strong> pou\u017e\u00edvaj\u00fa na schva\u013eovanie a overovanie dokumentov v elektronickej podobe. Vyu\u017e\u00edvaj\u00fa zlo\u017eit\u00e9 kryptografick\u00e9 mechanizmy na overenie pravosti digit\u00e1lnych dokumentov a spr\u00e1v, potvrdenie toto\u017enosti podpisovate\u013eov a ochranu \u00fadajov pred fal\u0161ovan\u00edm a pozme\u0148ovan\u00edm po\u010das prenosu.   <\/p>\n\n<p>Digit\u00e1lne podpisy s\u00fa vybaven\u00e9 backendov\u00fdmi n\u00e1strojmi, ktor\u00e9 zabezpe\u010duj\u00fa, \u017ee dokument m\u00f4\u017ee podp\u00edsa\u0165 len opr\u00e1vnen\u00e1 osoba, a zabra\u0148uj\u00fa zmen\u00e1m po podpise.<\/p>\n\n<p>Digit\u00e1lny podpis sa generuje pomocou jedine\u010dn\u00e9ho digit\u00e1lneho identifik\u00e1tora naz\u00fdvan\u00e9ho &#8220;digit\u00e1lny certifik\u00e1t&#8221; alebo &#8220;certifik\u00e1t verejn\u00e9ho k\u013e\u00fa\u010da&#8221;. Digit\u00e1lne certifik\u00e1ty vyd\u00e1vaj\u00fa akreditovan\u00e9 certifika\u010dn\u00e9 autority (CA) po overen\u00ed toto\u017enosti \u017eiadate\u013ea.   <\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Certifika\u010dn\u00e1 autorita (CA) je subjekt<\/strong>, ktor\u00fd je opr\u00e1vnen\u00fd vyd\u00e1va\u0165 digit\u00e1lne certifik\u00e1ty. P\u00f4sob\u00ed ako d\u00f4veryhodn\u00e1 tretia strana (TTP), ktor\u00e1 overuje identitu dr\u017eite\u013ea certifik\u00e1tu. Certifika\u010dn\u00e1 autorita tie\u017e potvrdzuje vlastn\u00edctvo verejn\u00e9ho k\u013e\u00fa\u010da.    <br\/><\/li>\n\n\n\n<li><strong>Digit\u00e1lny certifik\u00e1t je<\/strong> elektronick\u00fd pas, ktor\u00fd identifikuje \u00fa\u010dastn\u00edka konverz\u00e1cie zabezpe\u010denej PKI a umo\u017e\u0148uje jednotlivcom a in\u0161tit\u00faci\u00e1m bezpe\u010dne zdie\u013ea\u0165 \u00fadaje online. \u0160ifrovanie a de\u0161ifrovanie \u00fadajov sa vykon\u00e1va pomocou dvojice verejn\u00e9ho a s\u00fakromn\u00e9ho k\u013e\u00fa\u010da.   <br\/><\/li>\n\n\n\n<li><strong>Verejn\u00fd k\u013e\u00fa\u010d je<\/strong> jedine\u010dn\u00fd \u010d\u00edseln\u00fd identifik\u00e1tor, ktor\u00fd sa pou\u017e\u00edva na \u0161ifrovanie \u00fadajov alebo overovanie digit\u00e1lnych podpisov. Certifika\u010dn\u00fd org\u00e1n ho vyd\u00e1va osobe alebo organiz\u00e1cii a je verejne dostupn\u00fd ka\u017ed\u00e9mu, kto ho potrebuje.   <br\/><\/li>\n\n\n\n<li><strong>S\u00fakromn\u00fd k\u013e\u00fa\u010d je<\/strong> zn\u00e1my len jeho vlastn\u00edkovi. Pou\u017e\u00edva sa na de\u0161ifrovanie \u00fadajov vytvoren\u00fdch pomocou pr\u00edslu\u0161n\u00e9ho verejn\u00e9ho k\u013e\u00fa\u010da alebo na generovanie digit\u00e1lnych podpisov.   <\/li>\n<\/ul>\n\n<p>Digit\u00e1lne podpisy a digit\u00e1lne certifik\u00e1ty s\u00fa \u00fazko prepojen\u00e9. Va\u0161e aplik\u00e1cie a sp\u00f4soby pou\u017eitia z\u00e1visia od toho, ako s\u00fa tieto syst\u00e9my implementovan\u00e9 a ako funguje infra\u0161trukt\u00fara PKI. Digit\u00e1lny certifik\u00e1t sa niekedy ozna\u010duje ako digit\u00e1lny podpisov\u00fd certifik\u00e1t, preto\u017ee potvrdzuje verejn\u00fd k\u013e\u00fa\u010d (pravos\u0165) podpisovej autority.    <\/p>\n\n<h3 class=\"wp-block-heading\">Pre\u010do potrebujem digit\u00e1lny podpis a certifik\u00e1t?<\/h3>\n\n<p>Za\u010dnime jednoduch\u00fdm pr\u00edkladom. Alica a Bob chc\u00fa spolu komunikova\u0165 alebo podp\u00edsa\u0165 dokument.   <\/p>\n\n<h4 class=\"wp-block-heading\">Scen\u00e1r 1: \u00davodn\u00fd pr\u00edklad<\/h4>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"892\" src=\"https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-1024x892.png\" alt=\"Ako funguje digit&#xE1;lny podpis\" class=\"wp-image-3034\" style=\"width:478px;height:auto\" srcset=\"https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-1024x892.png 1024w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-300x261.png 300w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-768x669.png 768w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-1200x1045.png 1200w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-600x523.png 600w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur.png 1303w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<p>Alica m\u00e1 dva digit\u00e1lne kryptografick\u00e9 k\u013e\u00fa\u010de &#8211; verejn\u00fd (PA) a s\u00fakromn\u00fd\/tajn\u00fd (SA) k\u013e\u00fa\u010d. Verejn\u00fd k\u013e\u00fa\u010d m\u00f4\u017ee by\u0165 odovzdan\u00fd \u010falej. S\u00fakromn\u00fd k\u013e\u00fa\u010d v\u0161ak mus\u00ed by\u0165 tajn\u00fd a Alica ho mus\u00ed uchov\u00e1va\u0165 v bezpe\u010d\u00ed.    <\/p>\n\n<p>Alica vytvor\u00ed digit\u00e1lny certifik\u00e1t, ktor\u00fd obsahuje jej verejn\u00fd k\u013e\u00fa\u010d a e-mailov\u00fa adresu. Tento certifik\u00e1t po\u0161le Bobovi, aby s n\u00edm zdie\u013eala svoj verejn\u00fd k\u013e\u00fa\u010d.   <\/p>\n\n<p>Alica teraz m\u00f4\u017ee podp\u00edsa\u0165 dokument svoj\u00edm s\u00fakromn\u00fdm k\u013e\u00fa\u010dom a posla\u0165 ho Bobovi. Bob potom m\u00f4\u017ee skontrolova\u0165, \u010di sa Alicin verejn\u00fd k\u013e\u00fa\u010d zhoduje s podpisom vykonan\u00fdm Alicin\u00fdm s\u00fakromn\u00fdm k\u013e\u00fa\u010dom.   <\/p>\n\n<p>S\u00fakromn\u00fd a verejn\u00fd k\u013e\u00fa\u010d s\u00fa teda dve strany tej istej mince. V\u0161etko, \u010do je podp\u00edsan\u00e9 s\u00fakromn\u00fdm k\u013e\u00fa\u010dom, mo\u017eno overi\u0165 pomocou pr\u00edslu\u0161n\u00e9ho verejn\u00e9ho k\u013e\u00fa\u010da.   <\/p>\n\n<p>T\u00fdm je teraz zabezpe\u010den\u00e9, \u017ee len Alica m\u00f4\u017ee vytvori\u0165 podpis pomocou svojho s\u00fakromn\u00e9ho k\u013e\u00fa\u010da.<\/p>\n\n<p>Je v\u0161ak potrebn\u00e9 zavies\u0165 \u010fal\u0161ie bezpe\u010dnostn\u00e9 opatrenie.<br\/>Je potrebn\u00e9 zabezpe\u010di\u0165, aby sa prepojenie verejn\u00e9ho k\u013e\u00fa\u010da Alice a jej pou\u017e\u00edvate\u013esk\u00e9ho ID (napr. e-mailovej adresy) skuto\u010dne kontrolovalo.<\/p>\n\n<h4 class=\"wp-block-heading\">Scen\u00e1r 2: \u010co sa m\u00f4\u017ee sta\u0165, ak certifik\u00e1t nie je overen\u00fd?<\/h4>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"892\" src=\"https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-Zertifikat-1024x892.png\" alt=\"Ako funguje digit&#xE1;lny podpis - certifik&#xE1;t\" class=\"wp-image-3037\" style=\"width:468px;height:auto\" srcset=\"https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-Zertifikat-1024x892.png 1024w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-Zertifikat-300x261.png 300w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-Zertifikat-768x669.png 768w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-Zertifikat-1200x1045.png 1200w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-Zertifikat-600x523.png 600w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-Zertifikat.png 1303w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<p>Tentoraz chce Mallory predstiera\u0165, \u017ee je Alica, a komunikova\u0165 s Bobom. Mallory nem\u00e1 Alicin ani Bobov s\u00fakromn\u00fd k\u013e\u00fa\u010d. M\u00e1 v\u0161ak svoj vlastn\u00fd p\u00e1r s\u00fakromn\u00fd a verejn\u00fd k\u013e\u00fa\u010d.    <\/p>\n\n<p>Mallory sa sna\u017e\u00ed presved\u010di\u0165 Boba, \u017ee jeho s\u00fakromn\u00fd k\u013e\u00fa\u010d patr\u00ed Alici. Na tento \u00fa\u010del s\u00e1m vytvor\u00ed certifik\u00e1t zo svojho verejn\u00e9ho k\u013e\u00fa\u010da a Alicinho e-mailu a po\u0161le ho Bobovi. Ten si mysl\u00ed, \u017ee verejn\u00fd k\u013e\u00fa\u010d dostal od Alice.    <\/p>\n\n<p>Mallory teraz m\u00f4\u017ee podpisova\u0165 dokumenty svoj\u00edm s\u00fakromn\u00fdm k\u013e\u00fa\u010dom a bez prek\u00e1\u017eok ich posiela\u0165 Bobovi. Pou\u017e\u00edvate\u013e m\u00f4\u017ee podpis op\u00e4\u0165 skontrolova\u0165 pomocou verejn\u00e9ho k\u013e\u00fa\u010da a op\u00e4\u0165 porovna\u0165, ktor\u00e9 z nich. Bob je teraz presved\u010den\u00fd, \u017ee Alice t\u00fato spr\u00e1vu podp\u00edsala. V skuto\u010dnosti to v\u0161ak bol Mallory.     <\/p>\n\n<p>Probl\u00e9mom je, \u017ee Mallory m\u00e1 mo\u017enos\u0165 vytvori\u0165 prepojenie medzi svoj\u00edm verejn\u00fdm k\u013e\u00fa\u010dom a Alicin\u00fdm pou\u017e\u00edvate\u013esk\u00fdm menom.<\/p>\n\n<p>Tomu v\u0161ak chceme zabr\u00e1ni\u0165 a na to potrebujeme tretiu stranu.<\/p>\n\n<h4 class=\"wp-block-heading\">Scen\u00e1r 3: Ako to urobi\u0165 spr\u00e1vne?<\/h4>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"799\" height=\"1024\" src=\"https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign-799x1024.webp\" alt=\"- Digitale Signatur\" class=\"wp-image-3046\" style=\"width:448px;height:auto\" srcset=\"https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign-799x1024.webp 799w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign-234x300.webp 234w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign-768x984.webp 768w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign-1198x1536.webp 1198w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign-1200x1538.webp 1200w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign-600x769.webp 600w, https:\/\/wp-staging.sproof.com\/wp-content\/uploads\/2025\/08\/Wie-funktioniert-digitale-Signatur-sproof-sign.webp 1302w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><\/figure>\n<\/div>\n<p>Trent je d\u00f4veryhodn\u00e1 tretia strana, ktor\u00e1 zabezpe\u010duje overenie prepojenia verejn\u00e9ho k\u013e\u00fa\u010da Alice a jej ID pou\u017e\u00edvate\u013ea. Trent overuje Alicinu identitu, napr. pomocou kontroly ID pomocou Video Ident, a certifikuje digit\u00e1lny certifik\u00e1t.   <\/p>\n\n<p>Alica teraz m\u00f4\u017ee podpisova\u0165 spr\u00e1vy a Bob si m\u00f4\u017ee by\u0165 ist\u00fd, \u017ee spr\u00e1va skuto\u010dne poch\u00e1dza od Alice. To n\u00e1m umo\u017en\u00ed vytv\u00e1ra\u0165 digit\u00e1lne podpisy odoln\u00e9 vo\u010di fal\u0161ovaniu!   <\/p>\n\n<p><strong>D\u00f4le\u017eit\u00e9 s\u00fa preto dve veci:<\/strong><\/p>\n\n<ol class=\"wp-block-list\">\n<li>Na jednej strane sa mus\u00ed zisti\u0165 Alicina identita a jej UserID mus\u00ed by\u0165 spojen\u00e9 s verejn\u00fdm k\u013e\u00fa\u010dom. Alica m\u00e1 s\u00fakromn\u00fd k\u013e\u00fa\u010d v\u017edy v bezpe\u010dnej \u00faschove. Bu\u010f u seba, alebo prostredn\u00edctvom bezpe\u010dn\u00e9ho poskytovate\u013ea tretej strany, ako je napr\u00edklad sproof.    <br\/><\/li>\n\n\n\n<li>Po druh\u00e9, pri podpise sa mus\u00ed overi\u0165 toto\u017enos\u0165 podpisovate\u013ea, napr\u00edklad prostredn\u00edctvom push spr\u00e1vy na mobilnom telef\u00f3ne.<\/li>\n<\/ol>\n\n<p>To n\u00e1m umo\u017e\u0148uje vytv\u00e1ra\u0165 digit\u00e1lne kvalifikovan\u00e9 podpisy, ktor\u00e9 s\u00fa minim\u00e1lne rovnako bezpe\u010dn\u00e9 ako anal\u00f3gov\u00e9 podpisy.<\/p>\n\n<p>Z technick\u00e9ho h\u013eadiska je ka\u017ed\u00fd digit\u00e1lny podpis vytvoren\u00fd pre konkr\u00e9tny dokument jedine\u010dn\u00fd, a preto je ve\u013emi \u0165a\u017ek\u00e9 ho sfal\u0161ova\u0165. Schopnos\u0165 digit\u00e1lnych podpisov zabezpe\u010di\u0165 integritu a pravos\u0165 elektronick\u00fdch dokumentov a z\u00e1rove\u0148 uvies\u0165 s\u00fahlas podpisovate\u013ea umo\u017e\u0148uje podnikom, dod\u00e1vate\u013eom a z\u00e1kazn\u00edkom komunikova\u0165 online a bezpe\u010dne zdie\u013ea\u0165 inform\u00e1cie.   <\/p>\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<p>Z technick\u00e9ho h\u013eadiska je ka\u017ed\u00fd digit\u00e1lny podpis vytvoren\u00fd pre konkr\u00e9tny dokument jedine\u010dn\u00fd, a preto je ve\u013emi \u0165a\u017ek\u00e9 ho sfal\u0161ova\u0165. Schopnos\u0165 digit\u00e1lnych podpisov zabezpe\u010di\u0165 integritu a pravos\u0165 elektronick\u00fdch dokumentov a z\u00e1rove\u0148 uvies\u0165 s\u00fahlas podpisovate\u013ea umo\u017e\u0148uje podnikom, dod\u00e1vate\u013eom a z\u00e1kazn\u00edkom komunikova\u0165 online a bezpe\u010dne zdie\u013ea\u0165 inform\u00e1cie.   <\/p>\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.sproof.com\/_next\/image?url=https%3A%2F%2Fsproofweb.s3.nl-ams.scw.cloud%2FBlog_Summary_Icon_e0bc1286c7.png&amp;w=3840&amp;q=75\" alt=\"- Digitale Signatur\"><\/figure>\n\n<h2 class=\"wp-block-heading\">Odbo\u010dka: Kto s\u00fa Alice, Bob a Mallory?<\/h2>\n\n<p>Alice, Bob a Mallory s\u00fa fikt\u00edvne postavy, ktor\u00e9 sl\u00fa\u017eia ako synonym\u00e1 pre hlavn\u00fdch akt\u00e9rov komunik\u00e1cie a zdie\u013eania \u00fadajov. Namiesto toho, aby sa hovorilo o anonymn\u00fdch osob\u00e1ch, s\u00fa tieto osoby personifikovan\u00e9 prostredn\u00edctvom Alice, Boba a Mallory. T\u00e1to met\u00f3da u\u013eah\u010duje prezent\u00e1ciu zlo\u017eit\u00fdch vz\u0165ahov a procesov a rob\u00ed ich pre \u010ditate\u013ea zrozumite\u013enej\u0161\u00edmi.    <\/p>\n\n<p><strong>Kto s\u00fa Alica a Bob?<\/strong><br\/>Alica a Bob s\u00fa reprezentat\u00edvne postavy \u00fa\u010dastn\u00edkov komunik\u00e1cie medzi dvoma stranami. Alica vystupuje ako inici\u00e1tor, ktor\u00fd nadv\u00e4zuje komunik\u00e1ciu. Bob preber\u00e1 \u00falohu osoby, ktor\u00e1 prij\u00edma spr\u00e1vu. V\u00e4\u010d\u0161inu \u010dasu sa Alica sna\u017e\u00ed doru\u010di\u0165 spr\u00e1vu Bobovi, zatia\u013e \u010do Bob \u010dak\u00e1 na spr\u00e1vu od Alice.     <\/p>\n\n<p><strong>Kto je Mallory?<\/strong><br\/>Mallory je akt\u00edvny \u00fato\u010dn\u00edk komunik\u00e1cie, ktor\u00fd sa neboj\u00ed zasahova\u0165 do komunik\u00e1cie s cie\u013eom manipulova\u0165 so spr\u00e1vami alebo meni\u0165 \u00fadaje. Ako \u010dlovek uprostred (MITM) je Mallory nebezpe\u010dn\u00fd najm\u00e4 pre Alice a Boba, ktor\u00ed sa pred n\u00edm dok\u00e1\u017eu chr\u00e1ni\u0165 pomocou kryptografie.<br\/>Bez pou\u017eitia kryptografie &#8230;   <\/p>\n\n<ul class=\"wp-block-list\">\n<li>&#8230; prenosy \u00fadajov s\u00fa n\u00e1chyln\u00e9 na manipul\u00e1ciu tret\u00edmi stranami. Mallory by napr\u00edklad mohla zachyten\u00e9 \u00fadaje pou\u017ei\u0165 na vlastn\u00e9 \u00fa\u010dely alebo ich nepozorovane zmeni\u0165.   <\/li>\n\n\n\n<li>&#8230; Mallory sa mohol vyd\u00e1va\u0165 za in\u00fa osobu a z\u00edska\u0165 pr\u00edstup k d\u00f4vern\u00fdm inform\u00e1ci\u00e1m.<\/li>\n\n\n\n<li>&#8230; Alice mohla nepozorovane tvrdi\u0165, \u017ee Mallory ur\u010dit\u00e9 \u00fadaje sfal\u0161oval.<\/li>\n<\/ul>\n\n<p>Je v\u0161ak d\u00f4le\u017eit\u00e9 zd\u00f4razni\u0165, \u017ee<\/p>\n\n<ul class=\"wp-block-list\">\n<li>&#8230; kryptografia NIE JE schopn\u00e1 zabr\u00e1ni\u0165 tomu, aby Mallory nepozorovane zmenil alebo zachytil \u00fadaje.<\/li>\n\n\n\n<li>&#8230; \u017ee preru\u0161enie alebo zabr\u00e1nenie spojenia nie je vyl\u00fa\u010den\u00e9.<\/li>\n\n\n\n<li>&#8230; Pou\u017e\u00edvanie kryptografie je napriek tomu d\u00f4le\u017eit\u00fdm ochrann\u00fdm mechanizmom na minimaliz\u00e1ciu rizika manipul\u00e1cie s \u00fadajmi.<\/li>\n<\/ul>\n\n<p><strong>Kto je Trent?<\/strong><br\/>Trent, odvoden\u00fd z anglick\u00e9ho &#8220;trusted entity&#8221;, je d\u00f4veryhodn\u00e1 tretia strana. Napr\u00edklad ako certifika\u010dn\u00e1 autorita alebo skr\u00e1tene CA.   <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ako funguje kvalifikovan\u00fd digit\u00e1lny podpis<\/p>\n","protected":false},"author":1,"featured_media":91475,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[967],"tags":[972,971,969,973,968,970],"class_list":["post-91474","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-znalostny-prispevok","tag-digitalne-podpisy","tag-fez","tag-podpisove-normy","tag-procesy-digitalneho-podpisu","tag-qes","tag-sproof-sign"],"acf":[],"_links":{"self":[{"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/posts\/91474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/comments?post=91474"}],"version-history":[{"count":1,"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/posts\/91474\/revisions"}],"predecessor-version":[{"id":91480,"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/posts\/91474\/revisions\/91480"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/media\/91475"}],"wp:attachment":[{"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/media?parent=91474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/categories?post=91474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp-staging.sproof.com\/sk\/wp-json\/wp\/v2\/tags?post=91474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}