{"id":20549,"date":"2024-02-29T11:53:53","date_gmt":"2024-02-29T09:53:53","guid":{"rendered":"https:\/\/hostkoss.com\/b\/?p=20549"},"modified":"2024-06-30T15:06:26","modified_gmt":"2024-06-30T12:06:26","slug":"encryption-types-algorithms","status":"publish","type":"post","link":"https:\/\/hostkoss.com\/b\/lt\/encryption-types-algorithms\/","title":{"rendered":"\u0160ifravimas: Tipai ir algoritmai. Kas tai yra ir kuris \u0161ifravimo tipas yra geresnis?"},"content":{"rendered":"\n<p>\u0160iuolaikiniame <strong>skaitmeniniame am\u017eiuje<\/strong> itin svarbu <strong>u\u017etikrinti<\/strong> informacijos <strong>saugum\u0105 ir konfidencialum\u0105<\/strong>. Siekiant \u0161io tikslo, labai svarbus vaidmuo tenka \u0161ifravimui, nes duomenis galima paversti \u012f tok\u012f format\u0105, kuris yra neperskaitomas ir prieinamas tik \u012fgaliotiems asmenims. \u0160ifravimo procese naudojami kriptografiniai raktai ir matematiniai algoritmai.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote has-medium-font-size is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>\u0160iame straipsnyje ap\u017evelgsime tris pagrindinius \u0161ifravimo tipus<\/strong>: simetrin\u012f, asimetrin\u012f ir hibridin\u012f \u0161ifravim\u0105. Prad\u0117kime nuo simetrinio \u0161ifravimo.<\/p>\n<\/blockquote>\n\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Symmetric-encryption\">Simetrinis \u0161ifravimas<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"780\" height=\"410\" src=\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/Symmetric-encryption.jpg\" alt=\"Simetrinis \u0161ifravimas\" class=\"wp-image-20550\" srcset=\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/Symmetric-encryption.jpg 780w, https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/Symmetric-encryption-300x158.jpg 300w, https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/Symmetric-encryption-768x404.jpg 768w, https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/Symmetric-encryption-100x53.jpg 100w, https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/Symmetric-encryption-700x368.jpg 700w\" sizes=\"(max-width: 780px) 100vw, 780px\" \/><figcaption class=\"wp-element-caption\"><strong>Simetrinis \u0161ifravimas<\/strong><\/figcaption><\/figure>\n\n\n\n<p><strong>Simetrinis \u0161ifravimas <\/strong>, kaip rodo pavadinimas, naudoja vien\u0105 kriptografin\u012f rakt\u0105 ir \u0161ifravimui, ir de\u0161ifravimui. Naudojant vien\u0105 rakt\u0105 procesas yra paprastas. Nor\u0117dami suprasti simetrinio \u0161ifravimo esm\u0119, panagrin\u0117kite toliau pateikt\u0105 pavyzd\u012f:<\/p>\n\n\n\n<p><strong>\u012esivaizduokite du artimus draugus Anton\u0105 ir Alis\u0105<\/strong>, gyvenan\u010dius Kijeve. D\u0117l tam tikr\u0173 aplinkybi\u0173 Alisa priversta i\u0161sikraustyti i\u0161 miesto. Vienintel\u0117 j\u0173 bendravimo priemon\u0117 &#8211; pa\u0161tas. Ta\u010diau jie baiminasi, kad j\u0173 lai\u0161kus gali perimti ir perskaityti nepa\u017e\u012fstami \u017emon\u0117s.<\/p>\n\n\n\n<p><strong>Siekdami apsaugoti savo susira\u0161in\u0117jim\u0105, Antonas ir Alisa nusprend\u017eia<\/strong> u\u017e\u0161ifruoti savo prane\u0161imus. Jie susitaria d\u0117l paprasto \u0161ifravimo b\u016bdo: kiekvien\u0105 raid\u0119 perkelti septyniomis ab\u0117c\u0117l\u0117s pozicijomis \u017eemyn. Pavyzd\u017eiui, \u017eodis &#8220;Apple&#8221; bus u\u017era\u0161ytas kaip &#8220;hwwsl&#8221; (A -&gt; H, P -&gt; W, L -&gt; S, E -&gt; L). Norint i\u0161\u0161ifruoti prane\u0161im\u0105, reikia atlikti atvirk\u0161tin\u012f proces\u0105, perkeliant kiekvien\u0105 raid\u0119 septyniomis pozicijomis atgal. \u0160is \u0161ifravimo b\u016bdas primena senovin\u012f &#8220;Cezario \u0161ifr\u0105&#8221;, kur\u012f garsiai naudojo Romos imperatorius ir karo vadas Gajus Julijus Cezaris.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Simetrinio \u0161ifravimo privalumai<\/h3>\n\n\n\n<p><strong>Simetrinis \u0161ifravimas turi dideli\u0173 privalum\u0173<\/strong>, vis\u0173 pirma d\u0117l savo paprastumo. Naudojant vien\u0105 rakt\u0105 \u0161ifravimui ir i\u0161\u0161ifravimui, procesas supaprast\u0117ja. Be to, \u0161ifruojant didelius duomen\u0173 kiekius, simetrinis \u0161ifravimas yra veiksmingas pasirinkimas. Papildomi privalumai:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Greitis<\/strong>: simetriniai \u0161ifravimo algoritmai yra daug greitesni u\u017e asimetrinius, kuriuos aptarsime v\u0117liau.<\/li>\n\n\n\n<li>Skai\u010diavimo<strong>galia<\/strong>: simetriniam \u0161ifravimui reikalingi santykinai ma\u017eesni skai\u010diavimo i\u0161tekliai.<\/li>\n\n\n\n<li><strong>Minimalus poveikis interneto spartai<\/strong>: simetrinis \u0161ifravimas nedaro didel\u0117s \u012ftakos duomen\u0173 perdavimo internetu spartai.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Trys populiar\u016bs simetrinio \u0161ifravimo algoritmai<\/h3>\n\n\n\n<p><strong>Nors Cezario \u0161ifras rodo elementar\u0173 <\/strong>simetrinio \u0161ifravimo <strong>metod\u0105 <\/strong>, \u0161iuolaikiniai \u0161ifravimo metodai grind\u017eiami sud\u0117tingomis matematin\u0117mis funkcijomis, kurias labai sunku nulau\u017eti. Yra daug simetrinio \u0161ifravimo algoritm\u0173, ta\u010diau mes susitelksime \u012f tris da\u017eniausiai naudojamus:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>AES (Advanced Encryption Standard):<\/strong> AES laikomas vienu saugiausi\u0173 simetrini\u0173 \u0161ifravimo algoritm\u0173. Jis pakeit\u0117 pasenus\u012f DES algoritm\u0105 (kur\u012f aptarsime v\u0117liau) ir pasi\u017eymi stipriomis \u0161ifravimo galimyb\u0117mis. AES veikia su 128 bit\u0173 duomen\u0173 blokais, naudojant kintamo ilgio rakt\u0105 (paprastai 128, 192 arba 256 bit\u0173).<\/li>\n\n\n\n<li><strong>DES (duomen\u0173 \u0161ifravimo standartas):<\/strong> 1976 m. IBM pristatytas DES buvo pirmasis pla\u010diai naudojamas simetrinis \u0161ifravimo metodas. I\u0161 prad\u017ei\u0173 jis buvo sukurtas jautriai vyriausybinei informacijai apsaugoti, o 1977 m. tapo oficialiu JAV federalini\u0173 agent\u016br\u0173 \u0161ifravimo standartu. DES padalina atviro teksto duomenis \u012f 64 bit\u0173 blokus ir 16 cikl\u0173 taiko skirtingus \u0161ifravimo procesus, taip sukurdamas 64 bit\u0173 \u0161ifruoto teksto blokus. Ta\u010diau d\u0117l trumpo rakto ilgio 2005 m. DES buvo paskelbtas pasenusiu ir pakeistas AES.<\/li>\n\n\n\n<li><strong>3DES (trigubo duomen\u0173 \u0161ifravimo standartas<\/strong> ): patobulinus DES, 3DES kiekvienam duomen\u0173 blokui DES algoritmas taikomas tris kartus i\u0161 eil\u0117s. \u0160is procesas gerokai padidina \u0161ifravimo stiprum\u0105. Nors 3DES u\u017etikrina didesn\u012f saugum\u0105 nei DES, jis yra l\u0117tesnis ir ma\u017eiau efektyvus nei AES, tod\u0117l re\u010diau naudojamas \u0161iuolaikin\u0117se programose.<\/li>\n<\/ol>\n\n\n\n<blockquote class=\"wp-block-quote has-medium-font-size is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Verta pamin\u0117ti,<\/strong> kad pla\u010diai naudojamame TLS 1.2 protokole d\u0117l jo pa\u017eeid\u017eiamumo nenaudojamas DES \u0161ifravimo metodas.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Asymmetric-encryption\">Asimetrinis \u0161ifravimas<\/h2>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/Asymmetric-encryption.jpg\" alt=\"Asimetrinis \u0161ifravimas\"\/><figcaption class=\"wp-element-caption\"><strong>Asimetrinis \u0161ifravimas<\/strong><\/figcaption><\/figure>\n\n\n\n<p><strong>Simetriniam \u0161ifravimui<\/strong> \u0161ifruoti ir de\u0161ifruoti <strong>naudojamas vienas raktas<\/strong>, o asimetriniam \u0161ifravimui taikomas sud\u0117tingesnis metodas &#8211; keli tarpusavyje matemati\u0161kai susij\u0119 raktai. \u0160is \u0161ifravimo b\u016bdas dar vadinamas vie\u0161ojo rakto kriptografija ir apima &#8220;vie\u0161\u0105j\u012f rakt\u0105&#8221; ir &#8220;privat\u0173j\u012f rakt\u0105&#8221;.<\/p>\n\n\n\n<p><strong>Simetrinis \u0161ifravimas puikiai tiko Alisai ir Antonui<\/strong>, kai jiems reik\u0117jo tarpusavyje keistis informacija. Ta\u010diau jei Antonas nori saugiai bendrauti su daugybe \u017emoni\u0173, naudoti skirtingus raktus kiekvienam asmeniui tampa neprakti\u0161ka ir nepatogu.<\/p>\n\n\n\n<p><strong>\u0160iai problemai i\u0161spr\u0119sti Antonas naudoja<\/strong> vie\u0161ojo rakto <strong>\u0161ifravim\u0105<\/strong>. Taikydamas \u0161\u012f metod\u0105, Antonas i\u0161platina savo vie\u0161\u0105j\u012f rakt\u0105 visiems, kurie nori jam si\u0173sti informacij\u0105, o savo privat\u0173j\u012f rakt\u0105 laiko paslaptyje. Jis nurodo kitiems u\u017e\u0161ifruoti duomenis jo vie\u0161uoju raktu, u\u017etikrindamas, kad juos bus galima i\u0161\u0161ifruoti tik jo priva\u010diuoju raktu. \u0160is metodas pa\u0161alina privataus rakto kompromitavimo rizik\u0105, nes duomenis galima i\u0161\u0161ifruoti tik naudojant Antono privat\u0173 rakt\u0105.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Asimetrinio \u0161ifravimo privalumai<\/h3>\n\n\n\n<p><strong>Asimetrinis \u0161ifravimas turi daug privalum\u0173, pradedant<\/strong> didesniu saugumu. Taikant \u0161\u012f metod\u0105 duomenims u\u017e\u0161ifruoti naudojamas vie\u0161asis raktas, o i\u0161\u0161ifruoti &#8211; atitinkamas privatus raktas. Taip u\u017etikrinama, kad duomenys i\u0161liks apsaugoti nuo galim\u0173 \u017emogaus viduryje (MiTM) atak\u0173. Be to, \u017einiatinklio ir el. pa\u0161to serveriams, kurie s\u0105veikauja su daugybe klient\u0173, efektyviau valdyti ir apsaugoti tik vien\u0105 rakt\u0105. Be to, asimetrinis \u0161ifravimas leid\u017eia u\u017e\u0161ifruotus ry\u0161ius u\u017emegzti nesikei\u010diant raktais neprisijungus, o tai supaprastina proces\u0105.<\/p>\n\n\n\n<p><strong>Kita svarbi asimetrinio \u0161ifravimo funkcija &#8211; autenti\u0161kumo nustatymas.<\/strong> \u0160ifruojant duomenis gav\u0117jo vie\u0161uoju raktu, u\u017etikrinama, kad duomenis i\u0161\u0161ifruoti ir gauti prieig\u0105 prie j\u0173 gali tik numatytas gav\u0117jas, turintis atitinkam\u0105 privat\u0173j\u012f rakt\u0105. \u0160is tikrinimo mechanizmas patvirtina asmens arba organizacijos, su kuria asmuo bendrauja arba kei\u010diasi informacija, tapatyb\u0119.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Asimetrinis \u0161ifravimo algoritmas RSA (Rivest-Shamir-Adleman)<\/h3>\n\n\n\n<p><strong>1977 m. MIT mokslinink\u0173<\/strong> Rono Rivesto, Adi Shamiro ir Leonardo Adlemano <strong>i\u0161rastas<\/strong> RSA yra pla\u010diausiai naudojamas asimetrinis \u0161ifravimo algoritmas. Jo veiksmingumas slypi &#8220;paprastos faktorizacijos&#8221; koncepcijoje. RSA apima dviej\u0173 skirting\u0173 atsitiktini\u0173 pirmini\u0173 skai\u010di\u0173, pavyzd\u017eiui, 1024 bit\u0173, pasirinkim\u0105 ir j\u0173 padauginim\u0105, kad b\u016bt\u0173 gautas didelis skai\u010dius. U\u017eduotis &#8211; i\u0161 \u0161io padauginto rezultato nustatyti pradin\u012f pirmin\u012f pirmin\u012f skai\u010di\u0173. I\u0161spr\u0119sti \u0161\u012f galvos\u016bk\u012f prakti\u0161kai ne\u012fmanoma \u0161iuolaikiniams superkompiuteriams, jau nekalbant apie \u017emogaus skai\u010diavimus.<\/p>\n\n\n\n<p><strong>2010 m. atliktame tyrime grup\u0117 savanori\u0173<\/strong> \u0161imtuose kompiuteri\u0173 sugai\u0161o daugiau nei 1 500 met\u0173 skai\u010diavimo laiko, kad nulau\u017et\u0173 768 bit\u0173 RSA rakt\u0105, kuris yra gerokai ma\u017eesnis u\u017e dabartin\u012f 2048 bit\u0173 rakt\u0173 standart\u0105.<\/p>\n\n\n\n<p><strong>RSA \u0161ifravimo privalumas yra jo mastelio keitimo galimyb\u0117 <\/strong>, nes rakto ilgis gali b\u016bti \u012fvairus: Raktas gali b\u016bti 768 bit\u0173, 1024 bit\u0173, 2048 bit\u0173, 4096 bit\u0173 ir t. t. D\u0117l savo paprastumo ir pritaikomumo RSA tapo pagrindiniu asimetriniu \u0161ifravimo algoritmu \u012fvairiose srityse, \u012fskaitant SSL \/ TLS sertifikatus, kriptovaliutas ir el. pa\u0161to \u0161ifravim\u0105.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Hybrid-encryption\">Hibridinis \u0161ifravimas<\/h2>\n\n\n\n<p><strong>Nors asimetriniai \u0161ifravimo algoritmai, tokie kaip RSA ir ECC<\/strong>, u\u017etikrina stipr\u0173 saugum\u0105 ir autenti\u0161kumo patvirtinim\u0105, jie turi tr\u016bkum\u0173. Kita vertus, simetrinis \u0161ifravimas yra greitas ir efektyvus, ta\u010diau jam tr\u016bksta autenti\u0161kumo tikrinimo galimyb\u0117s. Siekiant i\u0161spr\u0119sti \u0161ias problemas ir sukurti \u0161ifravimo sistem\u0173 sinergij\u0105, atsirado hibridinio \u0161ifravimo s\u0105voka, kurioje panaudojami simetrinio ir asimetrinio \u0161ifravimo privalumai.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hibridinis \u0161ifravimas SSL\/TLS sertifikatuose:<\/h3>\n\n\n\n<p><strong>Hibridinis \u0161ifravimas <\/strong>&#8211; tai ne vienas metodas, o simetrinio ir asimetrinio \u0161ifravimo metod\u0173 derinys. Jis pla\u010diai naudojamas SSL \/ TLS sertifikatuose TLS perdavimo proceso metu, kai u\u017emezgamas saugus ry\u0161ys tarp serveri\u0173 ir klient\u0173 (interneto nar\u0161ykli\u0173).<\/p>\n\n\n\n<p><strong>TLS rankos paspaudimas pradedamas <\/strong>abiej\u0173 \u0161ali\u0173 tapatyb\u0117s <strong>patikrinimu <\/strong>naudojant privat\u0173 ir vie\u0161\u0105 rakt\u0105. Patvirtinus tapatyb\u0119, duomenys perduodami naudojant simetrin\u012f \u0161ifravim\u0105 ir efemerin\u012f (sesijos) rakt\u0105. Tai leid\u017eia greitai keistis dideliais duomen\u0173 kiekiais internetu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hibridinio \u0161ifravimo privalumai<\/h3>\n\n\n\n<p><strong>Hibridinis \u0161ifravimas &#8211; tai praktinis sprendimas,<\/strong> padedantis \u012fveikti atskir\u0173 \u0161ifravimo metod\u0173 tr\u016bkumus. Duomen\u0173 perdavimui naudojant simetrin\u012f \u0161ifravim\u0105, galima greitai ir efektyviai bendrauti. Kartu asimetrinis \u0161ifravimas u\u017etikrina b\u016btin\u0105 tapatyb\u0117s patikrinim\u0105, tod\u0117l u\u017etikrinama saugi \u0161ali\u0173 s\u0105veika.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Hibridinio \u0161ifravimo privalumai:<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Greitis ir efektyvumas:<\/strong> Simetrinis \u0161ifravimas, galintis greitai u\u017e\u0161ifruoti didelius duomen\u0173 kiekius, pagreitina \u0161ifravimo ir i\u0161\u0161ifravimo procesus, tod\u0117l duomenys perduodami greitai.<\/li>\n\n\n\n<li><strong>Autenti\u0161kumo nustatymas:<\/strong> Asimetrinis \u0161ifravimas: Asimetrinis \u0161ifravimas u\u017etikrina, kad numatytasis gav\u0117jas tur\u0117t\u0173 prieig\u0105 prie u\u017e\u0161ifruot\u0173 duomen\u0173, tikrinant abiej\u0173 komunikacijoje dalyvaujan\u010di\u0173 \u0161ali\u0173 tapatyb\u0119.<\/li>\n\n\n\n<li><strong>Hibridinis \u0161ifravimas<\/strong> u\u017etikrina pusiausvyr\u0105, nes leid\u017eia saugiai ir veiksmingai keistis duomenimis \u012fvairiais scenarijais. Jis pla\u010diai naudojamas tokiose srityse kaip SSL\/TLS sertifikatai, el. pa\u0161to \u0161ifravimas ir saug\u016bs ry\u0161i\u0173 protokolai.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Comparison-of-encryption-methods\">Simetrinio ir asimetrinio \u0161ifravimo metod\u0173 palyginimas<\/h2>\n\n\n\n<p>\u012e <strong>klausim\u0105, kuris \u0161ifravimo b\u016bdas yra geriausias <\/strong>, vieno atsakymo n\u0117ra. Pasirinkimas priklauso nuo konkre\u010di\u0173 reikalavim\u0173 ir aplinkybi\u0173 kiekvienoje situacijoje. Ap\u017evelkime simetrinio ir asimetrinio \u0161ifravimo privalumus ir pateikime juos palyginimo lentel\u0117je.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Simetrinis \u0161ifravimas:<\/strong><\/td><td><strong>Asimetrinis \u0161ifravimas:<\/strong><\/td><td><strong>Hibridinis \u0161ifravimas:<\/strong><\/td><\/tr><tr><td>Naudojant simetrin\u012f \u0161ifravim\u0105, duomenims \u0161ifruoti ir i\u0161\u0161ifruoti naudojamas vienas raktas, tod\u0117l procesas yra paprastesnis ir greitesnis.<\/td><td>Asimetriniam \u0161ifravimui naudojama rakt\u0173 pora: vie\u0161asis raktas ir privatusis raktas. Vie\u0161asis raktas naudojamas \u0161ifravimui, o privatusis &#8211; i\u0161\u0161ifravimui.<\/td><td>Daugeliu atvej\u0173 naudojamas hibridinis \u0161ifravimo b\u016bdas, kai derinami simetriniai ir asimetriniai \u0161ifravimo metodai.<\/td><\/tr><tr><td>Jis ypa\u010d tinka efektyviam dideli\u0173 duomen\u0173 kieki\u0173 \u0161ifravimui, nes u\u017etikrina didesn\u012f na\u0161um\u0105 ir reikalauja ma\u017eiau duomen\u0173 apdorojimo galios.<\/td><td>Vienas i\u0161 pagrindini\u0173 asimetrinio \u0161ifravimo privalum\u0173 &#8211; galimyb\u0117 u\u017etikrinti autenti\u0161kum\u0105, garantuojant\u012f bendraujan\u010di\u0173 \u0161ali\u0173 tapatyb\u0119.<\/td><td>Daugumoje \u0161iuolaikini\u0173 SSL sertifikat\u0173 naudojamas hibridinis metodas: asimetrinis \u0161ifravimas autenti\u0161kumui nustatyti ir simetrinis \u0161ifravimas privatumui u\u017etikrinti.<\/td><\/tr><tr><td>Simetriniam \u0161ifravimui naudojamas trumpesnis rakto ilgis, paprastai nuo 128 iki 256 bit\u0173.<\/td><td>D\u0117l sud\u0117tingo rakt\u0173 poravimo proceso asimetrinis \u0161ifravimas yra l\u0117tesnis ir reikalauja daugiau skai\u010diavimo galios.<\/td><td>\u0160is hibridinis metodas yra visapusi\u0161kas sprendimas, apsaugantis naudotoj\u0173 asmeninius duomenis nuo per\u0117mimo ar suk\u010diavimo.<\/td><\/tr><tr><td>Simetriniam \u0161ifravimui naudojami standartiniai algoritmai: RC4, AES, DES, 3DES ir QUAD.<\/td><td>Asimetriniam \u0161ifravimui naudojami ilgesni raktai, paprastai nuo 1024 iki 4096 bit\u0173.<\/td><td>Naudojant abiej\u0173 \u0161ifravimo metod\u0173 privalumus, hibridinis \u0161ifravimas u\u017etikrina saug\u0173 ry\u0161\u012f ir duomen\u0173 privatum\u0105.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Apibendrinant galima teigti, kad simetrinio<\/strong> ir asimetrinio \u0161ifravimo <strong>pasirinkimas<\/strong> priklauso nuo konkre\u010di\u0173 kiekvieno scenarijaus reikalavim\u0173. Simetrinis \u0161ifravimas yra labai efektyvus ir veiksmingas \u0161ifruojant didelius duomen\u0173 kiekius. Kita vertus, asimetrinis \u0161ifravimas u\u017etikrina autenti\u0161kumo nustatym\u0105 ir tapatyb\u0117s patikrinim\u0105. Hibridinis \u0161ifravimo metodas sujungia geriausius abiej\u0173 pasauli\u0173 privalumus ir si\u016blo patikim\u0105 sprendim\u0105, kuris pla\u010diai naudojamas SSL sertifikatuose ir kitose programose, kurioms reikia saugaus duomen\u0173 perdavimo.<\/p>\n\n\n\n<p><strong>Taip pat skaitykite:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/lt\/what-is-ssl-certificate\/\" target=\"_blank\" rel=\"noreferrer noopener\">Kas yra SSL sertifikatas ir kod\u0117l tur\u0117tum\u0117te j\u012f \u012fsidiegti<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/lt\/http-https\/\" target=\"_blank\" rel=\"noreferrer noopener\">Kas yra HTTP ir HTTPS ir kaip tai veikia j\u016bs\u0173 svetain\u0119?<\/a><\/strong><\/li>\n\n\n\n<li><strong><a href=\"https:\/\/hostkoss.com\/b\/lt\/free-ssl\/\" target=\"_blank\" rel=\"noreferrer noopener\">Kaip nemokamai gauti SSL sertifikat\u0105<\/a><\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"FAQs\">Klausimai ir atsakymai apie \u0161ifravim\u0105<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1719732113823\"><strong class=\"schema-faq-question\"><strong>Kas yra \u0161ifravimas<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>\u0160ifravimas \u2013 tai procesas, kurio metu duomenys paver\u010diami slaptu kodu, kad b\u016bt\u0173 i\u0161vengta neteis\u0117tos prieigos.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1719732175927\"><strong class=\"schema-faq-question\"><strong>Koki\u0173 yra \u0161ifravimo tip\u0173<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>Du pagrindiniai \u0161ifravimo tipai yra simetrinis ir asimetrinis.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1719732186887\"><strong class=\"schema-faq-question\"><strong>Kuris \u0161ifravimo algoritmas yra geresnis<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>Geriausias \u0161ifravimo algoritmas priklauso nuo konkre\u010di\u0173 saugumo ir na\u0161umo reikalavim\u0173. Ta\u010diau AES laikomas vienu saugiausi\u0173 ir efektyviausi\u0173 simetrinio \u0161ifravimo algoritm\u0173.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1719732199510\"><strong class=\"schema-faq-question\"><strong>Kaip \u0161ifravimas u\u017etikrina duomen\u0173 saugum\u0105<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>\u0160ifravimu duomenys apsaugomi paver\u010diant atvir\u0105 tekst\u0105 \u0161ifruotu tekstu, kur\u012f galima i\u0161\u0161ifruoti tik turint atitinkam\u0105 rakt\u0105.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1719732211821\"><strong class=\"schema-faq-question\"><strong>Ar \u0161ifravimas yra patikimas<\/strong>?<\/strong> <p class=\"schema-faq-answer\"><em>Nors \u0161ifravimas u\u017etikrina auk\u0161t\u0105 saugumo lyg\u012f, jis n\u0117ra patikimas. Nor\u0117dami suma\u017einti galim\u0105 rizik\u0105, turite naudoti stiprius \u0161ifravimo algoritmus ir \u012fgyvendinti tinkam\u0105 rakt\u0173 valdymo praktik\u0105.<\/em><\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u0160iuolaikiniame skaitmeniniame am\u017eiuje itin svarbu u\u017etikrinti informacijos saugum\u0105 ir konfidencialum\u0105. Siekiant \u0161io tikslo, labai svarbus vaidmuo tenka \u0161ifravimui, nes duomenis galima paversti \u012f tok\u012f format\u0105,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":20541,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1527],"tags":[],"class_list":["post-20549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ssl"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v25.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0160ifravimas: Tipai ir algoritmai. 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Kas tai yra ir kuris tipas yra geresnis?\" \/>\n<meta property=\"og:description\" content=\"\u0160iame straipsnyje ap\u017evelgsime tris pagrindinius \u0161ifravimo tipus - simetrin\u012f, asimetrin\u012f ir hibridin\u012f \u0161ifravim\u0105. \u0160ifravimo metod\u0173 palyginimas\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hostkoss.com\/b\/lt\/encryption-types-algorithms\/\" \/>\n<meta property=\"og:site_name\" content=\"hostkoss blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/hostkoss\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-29T09:53:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-30T12:06:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2023\/06\/encryption-types-algorithms-hostkoss-blog-ssl-700x368.jpg\" \/>\n<meta name=\"author\" content=\"Andrii Kostashchuk\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"\u0160ifravimas: Tipai ir algoritmai. 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