{"id":3341,"date":"2026-03-14T05:09:10","date_gmt":"2026-03-14T04:09:10","guid":{"rendered":"https:\/\/kriptoblog.hu\/?p=3341"},"modified":"2026-06-21T00:33:59","modified_gmt":"2026-06-20T23:33:59","slug":"kvantumveszely-megszuletett-a-digitalis-vagyon-uj-harctere","status":"publish","type":"post","link":"https:\/\/kriptoblog.hu\/en\/kvantumveszely-megszuletett-a-digitalis-vagyon-uj-harctere\/","title":{"rendered":"The Evolution and Implications of Post-Quantum Cryptography: A New Era in Digital Asset Protection"},"content":{"rendered":"

\nAmikor a matematikai k\u00e9pletek, amikre a glob\u00e1lis p\u00e9nz\u00fcgyi rendszer \u00e9p\u00fcl, hirtelen gyeng\u00e9k\u00e9 v\u00e1lnak, az nem csak technol\u00f3giai k\u00e9rd\u00e9s, hanem l\u00e9nyeg\u00e9ben egy \u00faj t\u00edpus\u00fa fegyverkez\u00e9si verseny kezdete.<\/strong> A kvantumsz\u00e1m\u00edt\u00f3g\u00e9pek gyors fejl\u0151d\u00e9se nem csup\u00e1n egy elm\u00e9leti kock\u00e1zat, hanem egy olyan aszimmetrikus fenyeget\u00e9s, amely k\u00f6zvetlen\u00fcl c\u00e9lba veszi a kriptovalut\u00e1k biztons\u00e1gos t\u00e1rol\u00e1s\u00e1nak \u00e9s tranzakci\u00f3s integrit\u00e1s\u00e1nak alapjait. Ebben a cikkben felt\u00e1rjuk, mi\u00e9rt \u00e1ll a decentraliz\u00e1lt vil\u00e1g biztons\u00e1ga a pontokon, \u00e9s mi\u00e9rt v\u00e1lik a kriptogr\u00e1fiai migr\u00e1ci\u00f3 a k\u00f6vetkez\u0151 \u00e9vtized legfontosabb verseny\u00e9v\u00e9.\n<\/p>\n

I personally felt the vulnerability of the digital world when a friend fell victim to a sophisticated cyberattack. The incident highlighted that our current cryptographic systems, which still form the foundation of our digital assets, may not be able to withstand future threats. This experience prompted me to delve deeper into the world of post-quantum cryptography \u2013 an area that could shape the future of digital security.<\/h2>\n

\nA mai blockchain-protokollok, legyen sz\u00f3 a Bitcoinr\u00f3l vagy az Ethereumr\u00f3l, alapvet\u0151en aszimmetrikus kriptogr\u00e1fiai algoritmusokra t\u00e1maszkodnak. A legfontosabb k\u00f6z\u00fcl ezek az elliptikus g\u00f6rbe-alap\u00fa (Elliptic Curve Cryptography – ECC) \u00e9s a RSA algoritmusok. Ezek a rendszerek az\u00e9rt m\u0171k\u00f6dnek, mert a jelenlegi szupersz\u00e1m\u00edt\u00f3g\u00e9pek sz\u00e1m\u00e1ra a priv\u00e1t kulcsok kinyer\u00e9se a nyilv\u00e1nos kulcsokb\u00f3l gyakorlatilag lehetetlen, \u00e9vmill\u00e1rdoknyi sz\u00e1m\u00edt\u00e1si m\u0171veletet ig\u00e9nyelne.\n<\/p>\n

\nA kvantumsz\u00e1m\u00edt\u00e1s azonban teljesen megv\u00e1ltoztatja a szab\u00e1lyokat. A szuperpoz\u00edci\u00f3 (superposition) \u00e9s a kvantum-\u00f6sszefon\u00f3d\u00e1s r\u00e9v\u00e9n a kvantumsz\u00e1m\u00edt\u00f3g\u00e9pek k\u00e9pesek olyan algoritmusokat futtatni, mint p\u00e9ld\u00e1ul a Shor-algoritmus<\/strong>, amely drasztikusan ler\u00f6vid\u00edti a faktorsz\u00e1roz\u00e1s \u00e9s a diszkr\u00e9t logaritmus feladatok megold\u00e1si idej\u00e9t.\n<\/p>\n

\nAn analysis by **Deloitte** [1] points out that quantum technology is evolving at an exponential rate, and companies need to prepare for future challenges now. The **Commission** also recognized the danger and published a recommendation on transitioning to post-quantum cryptography [2].\n<\/p>\n

How does it work?<\/h2>\n

\nAhhoz, hogy ne \u00e1lljunk tehetetlen\u00fcl, a kriptogr\u00e1fia tudom\u00e1nya m\u00e1r most a post-kvantum (PQC – post-quantum cryptography) korsak fel\u00e9 mozdul. A c\u00e9l olyan algoritmusok fejleszt\u00e9se, amelyek olyan matematikai neh\u00e9zs\u00e9geken alapulnak, amiket m\u00e9g egy kvantumsz\u00e1m\u00edt\u00f3g\u00e9p sem tud hat\u00e9konyan megoldani.\n<\/p>\n

\n* **Lattice-based cryptography:** Lattice-based systems are based on mathematical lattices, which pose difficulties for quantum computers.\n* **Code-based cryptography:** Code-based systems are based on error-correcting codes, which are also resistant to quantum attacks.\n* **Multivariate equation systems:** These systems are based on non-linear equation systems that are difficult to solve with both classical and quantum computers.\n* **Hash-based signatures:** These signature schemes are based on cryptographic hash functions, which are relatively simple and fast, but have a limited lifespan.\n* **Isogeny-based Diffie-Hellman cryptography:** A key exchange protocol based on isogenies of elliptic curves.\n<\/p>\n

    \n
  1. Lattice-based cryptography (R\u00e1csalap\u00fa kriptogr\u00e1fia):<\/strong> Ez jelenleg a leg\u00edg\u00e9retesebb ir\u00e1ny. A neh\u00e9zs\u00e9get t\u00f6bbdimenzi\u00f3s r\u00e1csok legk\u00f6zelebbi pontj\u00e1nak keres\u00e9si probl\u00e9m\u00e1ja jelenti, ami kvantumsz\u00e1m\u00edt\u00e1si szempontb\u00f3l is rendk\u00edv\u00fcl komplex.<\/li>\n
  2. Hash-alap\u00fa al\u00e1\u00edr\u00e1sok:<\/strong> Ezek a m\u00f3dszerek a kriptogr\u00e1fiai hash-funkci\u00f3k biztons\u00e1g\u00e1ra t\u00e1maszkodnak, amelyek kvantumsz\u00e1m\u00edt\u00e1s ellen is viszonylok ellen\u00e1ll\u00f3ak (b\u00e1r a Grover-algoritmus miatt a bitm\u00e9lys\u00e9get n\u00f6velni kell).<\/li>\n
  3. Multivariate kriptogr\u00e1fia:<\/strong> Itt t\u00f6bb v\u00e1ltoz\u00f3s nemline\u00e1r egyenletrendszer megold\u00e1s\u00e1t haszn\u00e1lj\u00e1k, ami szint\u00e9n nagy ellen\u00e1ll\u00e1st ny\u00fajt.<\/li>\n<\/ol>\n

    \nWhy is it unique\/interesting?\n<\/p>\n

    The uniqueness of post-quantum cryptography lies in its attempt not to strengthen existing systems, but to create a completely new security paradigm. This not only protects cryptocurrencies from future attacks, but also all digital data that relies on current cryptographic systems \u2013 including bank transactions, health data, and government secrets.<\/h2>\n

    \nItt \u00e9rkez\u00fcnk el a legkritikusabb pontra: a migr\u00e1ci\u00f3s versenyhez<\/strong>. Egy decentraliz\u00e1lt h\u00e1l\u00f3zat friss\u00edt\u00e9se nem olyan, mintha egy k\u00f6zponti bank friss\u00edten\u00e9 a szoftver\u00e9t. A blockchain migr\u00e1ci\u00f3 egy rendk\u00edv\u00fcl komplex koordin\u00e1ci\u00f3s feladat, amely k\u00e9t nagy dilemm\u00e1t vet fel.\n<\/p>\n

    \nEls\u0151 dilemma: A biztons\u00e1gos hard fork k\u00e9rd\u00e9se.<\/strong>
    \n
    \nAhhoz, hogy egy blockchain \u00e1t\u00e1lljon kvantumrezisztens protokollra, egy olyan hard fork-ra (kem\u00e9ny v\u00e1glazul\u00e1sra) van sz\u00fcks\u00e9g, amely alapjaiban \u00edrja \u00e1t a h\u00e1l\u00f3zat szab\u00e1lyait. Hogyan tud egy decentraliz\u00e1lt k\u00f6z\u00f6ss\u00e9g ilyen m\u00e9ly v\u00e1ltoz\u00e1st v\u00e9grehajtani an\u00e9lk\u00fcl, hogy elvesz\u00edten\u00e9 a bizalm\u00e1t? Ha a friss\u00edt\u00e9s t\u00fal lass\u00fa, a t\u00e1mad\u00f3k bevethetik a kvantumer\u0151forr\u00e1sokat. Ha t\u00fal gyors \u00e9s k\u00e9nyszer\u00edtett, a likvidit\u00e1s elmenhet, vagy a k\u00f6z\u00f6ss\u00e9g kett\u00e9szakad, ami gyeng\u00edti a h\u00e1l\u00f3zat hat\u00e1startalm\u00e1t.\n<\/p>\n

    \nM\u00e1sodik dilemma: A decentraliz\u00e1ci\u00f3 vs. a biztons\u00e1gi friss\u00edt\u00e9s.<\/strong>
    \n
    \nA biztons\u00e1gi friss\u00edt\u00e9sek gyakran k\u00f6zpontos\u00edtott d\u00f6nt\u00e9hoz\u0151kt\u0151l (p\u00e9ld\u00e1ul a fejleszt\u0151i csapatokt\u00f3l vagy a nagy min\u0151s\u00e9gi t\u0151ke tulajdonosokt\u00f3l) ig\u00e9nylik. Ha a migr\u00e1ci\u00f3t csak n\u00e9h\u00e1ny nagy szerepl\u0151 ir\u00e1ny\u00edtja, az vesz\u00e9lyezteti a kriptovalut\u00e1k alapvet\u0151, decentraliz\u00e1lt jelleg\u00e9t. A k\u00e9rd\u00e9s: k\u00e9pesek vagyunk egy olyan kooperat\u00edv folyamatra, ahol a milli\u00f3 felhaszn\u00e1l\u00f3 egyszerre, biztons\u00e1gosan migr\u00e1ci\u00f3t v\u00e9gez a r\u00e9gi (vesz\u00e9lyes) c\u00edmekr\u0151l az \u00faj (biztons\u00e1gos) c\u00edmekre?\n<\/p>\n

    Key Takeaways for Investors<\/h2>\n

    \nPost-quantum cryptography can be applied in many areas:\n<\/p>\n

    \nMit tegyen az olvas\u00f3? Mire figyeljen?<\/strong>\n<\/p>\n

      \n
    1. Figyelje a protokollok roadmap-j\u00e9t:<\/strong> N\u00e9zze meg, hogy az olyan nagy projektek (pl. Ethereum, Cardano, Polkadot) milyen l\u00e9p\u00e9seket tesznek a post-quantum cryptography fel\u00e9. A fejleszt\u00e9s hi\u00e1nya egy hossz\u00fa t\u00e1v\u00fa v\u00f6r\u00f6s z\u00e1szl\u00f3.<\/li>\n
    2. Ne t\u00e1roljon hatalmas \u00f6sszegeket legacy (r\u00e9gi t\u00edpus\u00fa) c\u00edmeken:<\/strong> A jelenlegi statikus c\u00edmek (ahol a nyilv\u00e1nos kulcs l\u00e1that\u00f3 a tranzakci\u00f3 ut\u00e1n) a legvesz\u00e9lyesebbek. A modern t\u00e1rc\u00e1k (hardware walletok) fejleszt\u00e9se folyamatosan k\u00eds\u00e9ri a kvantumrezisztens megold\u00e1sokat.<\/li>\n
    3. \u00c9rtse meg a migr\u00e1ci\u00f3s k\u00f6lts\u00e9get:<\/strong> Amikor egy projekt kvantumfriss\u00edt\u00e9st \u00edg\u00e9r, sz\u00e1moljon r\u00e1, hogy ez jelent\u0151s technikai \u00e9s gazdas\u00e1gi turbulenci\u00e1t okozhat. A stabilit\u00e1s \u00e9s a biztons\u00e1g k\u00f6z\u00f6tti egyens\u00falyt a piac fogja tesztelni.<\/li>\n<\/ol>\n

      Our own approach: we don't buy on the news, we buy on our theses. If someone believes that mobile crypto adoption is a long-term story that eventually plays out, then today's quiet price isn't alarming \u2014 it's more like opportunity. If someone doesn't believe it, no single feature announcement will convince them. Everyone decides this for themselves, at their own risk \u2014 our job is to ask the right questions precisely. Our own results have been mixed and probably will continue to be; we don't promise certain answers, only honest thinking.<\/h2>\n

      \n**Those who do not pay attention to this development may suffer significant disadvantages** in the field of digital security. It is important for investors to thoroughly understand the risks and opportunities of post-quantum cryptography before making investment decisions.\n<\/p>\n

      \nFuture prospects\n<\/p>\n

      Sources<\/h2>\n
        \n
      • NIST Post-Quantum Cryptography Standardization Project (2023. okt\u00f3ber)<\/li>\n
      • Ethereum Foundation: Research on Quantum Resistance (2024. janu\u00e1r)<\/li>\n
      • CoinDesk: The Quantum Threat to Blockchain (2023. december)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

        Amikor a matematikai k\u00e9pletek, amikre a glob\u00e1lis p\u00e9nz\u00fcgyi rendszer \u00e9p\u00fcl, hirtelen gyeng\u00e9k\u00e9 v\u00e1lnak, az nem csak technol\u00f3giai k\u00e9rd\u00e9s, hanem l\u00e9nyeg\u00e9ben egy \u00faj t\u00edpus\u00fa fegyverkez\u00e9si verseny kezdete. A kvantumsz\u00e1m\u00edt\u00f3g\u00e9pek gyors fejl\u0151d\u00e9se nem csup\u00e1n egy elm\u00e9leti kock\u00e1zat, hanem egy olyan aszimmetrikus fenyeget\u00e9s, amely k\u00f6zvetlen\u00fcl c\u00e9lba veszi a kriptovalut\u00e1k biztons\u00e1gos t\u00e1rol\u00e1s\u00e1nak \u00e9s tranzakci\u00f3s integrit\u00e1s\u00e1nak alapjait. Ebben a cikkben […]<\/p>\n","protected":false},"author":1,"featured_media":4287,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[482],"tags":[127,114,483,501],"class_list":["post-3341","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blockchain","tag-biztonsag","tag-blockchain","tag-kriptografia","tag-kvantumrezisztens"],"_links":{"self":[{"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/posts\/3341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/comments?post=3341"}],"version-history":[{"count":1,"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/posts\/3341\/revisions"}],"predecessor-version":[{"id":3371,"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/posts\/3341\/revisions\/3371"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/media\/4287"}],"wp:attachment":[{"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/media?parent=3341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/categories?post=3341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kriptoblog.hu\/en\/wp-json\/wp\/v2\/tags?post=3341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}