Ochrana pred „ulož teraz, dešifruj neskôr“
Čo si dnes niekto po ceste zaznamená, môže si chcieť prečítať neskôr — keď bude mať kvantový počítač. Post-kvantová výmena kľúčov je navrhnutá tak, aby taký záznam ostal nečitateľný aj potom.
POST-KVANTOVÁ BEZPEČNOSŤ · PREHLIADAČE
Ktoré prehliadače ťa chránia
Post-kvantovú ochranu spojenia nezapína web sám — dohodne si ju s ním tvoj prehliadač. Naše weby ju ponúkajú každému. Či ju naozaj dostaneš, závisí od toho, aký prehliadač máš a ako je aktuálny.
Od akej verzie to prehliadače robia samy
Prehliadače v tabuľke používajú hybridnú výmenu kľúčov X25519MLKEM768 (klasická X25519 + post-kvantová ML-KEM-768) predvolene — nič nezapínaš. Uvádzame len to, čo potvrdzuje oficiálny zdroj; odkaz je pri každom riadku.
| Prehliadač | Zariadenie | Post-kvantovo predvolene od | Zdroj |
|---|---|---|---|
| Google Chrome | Windows, Mac, Linux, ChromeOS | verzia 131 (november 2024)Od verzie 124 predbežná verzia (Kyber), ktorú 131 nahradila štandardom ML-KEM. | Google Security Blog · Chrome Platform Status |
| Google Chrome | Android | najneskôr verzia 133 (február 2025)Google to pre Android samostatne neohlásil; údaj je zo zdrojového kódu Chromia. | Chromium net/base/features.cc (133) |
| Microsoft Edge | Windows, Mac, Linux | verzia 131 (november 2024) | Microsoft Learn — Edge 131.0.2903.48 |
| Mozilla Firefox | Windows, Mac, Linux | verzia 132 (október 2024)Pri spojeniach cez HTTP/3 od verzie 136. | Firefox 132 Release Notes · Bugzilla 1941041 |
| Mozilla Firefox | Android | verzia 145 (november 2025) | Firefox for Android 145 Release Notes |
| Apple Safari | Mac, iPhone, iPad | macOS Tahoe 26, iOS a iPadOS 26 (september 2025)Rozhoduje verzia systému, nie aplikácie — Safari sa aktualizuje so systémom. | Apple Support 122756 · Apple Platform Security |
Neoverené: Pre tieto prehliadače sme oficiálny údaj nenašli, preto ich do tabuľky nedávame: Brave a Opera (stoja na Chromiu, ktoré to má, no samy to výslovne neuvádzajú), Samsung Internet, Vivaldi, DuckDuckGo, Edge na Androide, Chrome, Firefox a ďalšie prehliadače na iPhone a iPade (stránky im načítava systém Apple, takže pravdepodobne od iOS 26 — výslovne to však nikto nepotvrdzuje). Či ťa chránia, ti ukáže odznak hore na tejto stránke.
Výhody, ktoré nevidno, ale platia
Nič nenastavuješ
Stačí aktuálny prehliadač. Prehliadač a web sa na post-kvantovom šifrovaní dohodnú samy, pri každom pripojení.
Dvojitá poistka
Hybrid spája klasickú a post-kvantovú metódu. Útočník by musel prelomiť obe; ak by sa jedna ukázala slabá, chráni druhá.
Starší prehliadač nič nerozbije
Pripojí sa šifrovane ako doteraz, len bez post-kvantovej časti. Dnes je také spojenie bezpečné — chýba mu len ochrana do budúcnosti.
Najlacnejšia bezpečnostná investícia
Aktualizácia prehliadača nestojí nič a okrem post-kvantového šifrovania prináša aj opravy chýb, ktoré útočníci zneužívajú už dnes.
Väčšina prehliadačov sa aktualizuje sama — často stačí prehliadač zavrieť a znova otvoriť. Pri Safari na iPhone, iPade aj Macu prichádza nové šifrovanie s aktualizáciou systému (iOS, iPadOS a macOS 26), nie samotného prehliadača.
Kde nájdeš, akú verziu máš
Chrome
Menu ⋮ → Pomocník → Informácie o prehliadači Google Chrome, alebo do riadka adresy napíš chrome://settings/help. Chrome pri tom skontroluje aj aktualizácie.
Edge
Menu … → Pomocník a pripomienky → O Microsoft Edge, alebo edge://settings/help.
Firefox
Menu ☰ → Pomocník → O aplikácii Firefox (na Macu v ponuke Firefox → O aplikácii Firefox).
Safari na Macu
Ponuka Safari → O Safari. Verziu systému ukáže ponuka Apple → Informácie o tomto Macu.
iPhone a iPad
Nastavenia → Všeobecné → Informácie. Aktualizácia: Nastavenia → Všeobecné → Aktualizácia softvéru.
Android
V Chrome: ⋮ → Nastavenia → O prehliadači Chrome. Aktualizuje sa cez Obchod Play.
Návody výrobcov: Google Chrome · Microsoft Edge · Mozilla Firefox · iPhone, iPad · Safari
Overené z oficiálnych zdrojov k 24. 9. 2026. Prehliadače sa vyvíjajú rýchlo — keď sa niečo zmení, doplníme to sem.
POST-QUANTUM SECURITY · BROWSERS
Which browsers protect you
Post-quantum protection of a connection is not switched on by the website alone — your browser negotiates it with the site. Our websites offer it to everyone. Whether you actually get it depends on which browser you use and how up to date it is.
Since which version browsers do it on their own
The browsers in the table use the hybrid X25519MLKEM768 key exchange (classic X25519 + post-quantum ML-KEM-768) by default — nothing to switch on. We list only what an official source confirms; each row links to it.
| Browser | Device | Post-quantum by default since | Source |
|---|---|---|---|
| Google Chrome | Windows, Mac, Linux, ChromeOS | version 131 (November 2024)From version 124 a preliminary version (Kyber), replaced by the ML-KEM standard in 131. | Google Security Blog · Chrome Platform Status |
| Google Chrome | Android | version 133 at the latest (February 2025)Google did not announce it separately for Android; the figure comes from the Chromium source code. | Chromium net/base/features.cc (133) |
| Microsoft Edge | Windows, Mac, Linux | version 131 (November 2024) | Microsoft Learn — Edge 131.0.2903.48 |
| Mozilla Firefox | Windows, Mac, Linux | version 132 (October 2024)For HTTP/3 connections from version 136. | Firefox 132 Release Notes · Bugzilla 1941041 |
| Mozilla Firefox | Android | version 145 (November 2025) | Firefox for Android 145 Release Notes |
| Apple Safari | Mac, iPhone, iPad | macOS Tahoe 26, iOS and iPadOS 26 (September 2025)What counts is the system version, not the app — Safari is updated with the system. | Apple Support 122756 · Apple Platform Security |
Not verified: We found no official statement for these browsers, so they are not in the table: Brave and Opera (built on Chromium, which has it, but they do not state it themselves), Samsung Internet, Vivaldi, DuckDuckGo, Edge on Android, Chrome, Firefox and other browsers on iPhone and iPad (pages are loaded by Apple’s system, so likely from iOS 26 — but nobody confirms it explicitly). The badge at the top of this page shows whether they protect you.
Benefits you do not see, but get
Protection against “harvest now, decrypt later”
What someone records on the way today, they may want to read later — once they have a quantum computer. A post-quantum key exchange is designed so that such a recording stays unreadable even then.
Nothing to set up
An up-to-date browser is enough. The browser and the website agree on post-quantum encryption on their own, on every connection.
A double safeguard
The hybrid combines a classic and a post-quantum method. An attacker would have to break both; if one turned out weak, the other still protects.
An older browser breaks nothing
It connects encrypted as before, just without the post-quantum part. Such a connection is secure today — it only lacks protection for the future.
The cheapest security investment
Updating your browser costs nothing, and besides post-quantum encryption it brings fixes for flaws that attackers exploit today.
Most browsers update themselves — often it is enough to close the browser and open it again. For Safari on iPhone, iPad and Mac, the new encryption arrives with the system update (iOS, iPadOS and macOS 26), not with the browser itself.
Where to find which version you have
Chrome
Menu ⋮ → Help → About Google Chrome, or type chrome://settings/help in the address bar. Chrome also checks for updates.
Edge
Menu … → Help and feedback → About Microsoft Edge, or edge://settings/help.
Firefox
Menu ☰ → Help → About Firefox (on a Mac: Firefox menu → About Firefox).
Safari on a Mac
Safari menu → About Safari. The system version is under Apple menu → About This Mac.
iPhone and iPad
Settings → General → About. To update: Settings → General → Software Update.
Android
In Chrome: ⋮ → Settings → About Chrome. Updates come through Google Play.
Vendor guides: Google Chrome · Microsoft Edge · Mozilla Firefox · iPhone, iPad · Safari
Verified from official sources as of 24 September 2026. Browsers move fast — when something changes, we will add it here.