2 min read<\/p>\n
Quantum computers threaten the cryptography that underpins our digital infrastructure – from TLS to VPNs and Bitcoin. However, the crypto community is responding faster than expected. A look at the post-quantum strategies shaping tomorrow’s security architecture.<\/strong><\/p>\n The security of modern cryptography relies on mathematical problems that are effectively unsolvable for classical computers: large number factorization (RSA) and the discrete logarithm problem on elliptic curves (ECDSA). Quantum computers could solve these problems using Shor’s algorithm in polynomial time.<\/p>\n This affects not just Bitcoin but also TLS, SSH, VPNs, digital signatures, certificates – the entire PKI infrastructure of the internet relies on these assumptions. If they fail, everything fails.<\/p>\n The National Institute of Standards and Technology (NIST) has published the first post-quantum standards after an eight-year evaluation process in 2024:<\/p>\n Google, Cloudflare, and Apple are already testing hybrid TLS implementations combining classical and post-quantum algorithms. Chrome has supported ML-KEM since version 124.<\/p>\n Bitcoin has an often overlooked advantage: addresses that have never sent a transaction are protected by SHA-256 and RIPEMD-160 – hash functions that also withstand quantum computers (Grover’s algorithm reduces key length by half).<\/p>\n The risk primarily affects “exposed” public keys – addresses that have already sent transactions. The Bitcoin community is discussing several migration paths:<\/p>\n Interestingly, the same cryptographic principles that have secured Bitcoin for 15 years – hash-based commitments, Merkle trees, defense in depth – are the same concepts underlying post-quantum security.<\/p>\n State actors could record encrypted communications today and decrypt them in 10-15 years with quantum computers. For companies with long-term sensitive data (patents, business secrets, health data), this is a concrete risk now.<\/p>\n The BSI recommends since 2024: Start immediately with an inventory of your cryptographic procedures. Identify where RSA and ECDSA are used. Plan migration to post-quantum capable algorithms.<\/p>\n NIST PQC-Standards:<\/strong> Finalized in 2024 after 8 years of evaluation<\/p>\n Threat Horizon:<\/strong> 10-20 years until cryptographically relevant quantum computers (estimate)<\/p>\n Harvest now, decrypt later:<\/strong> Risk exists today for long-term sensitive data<\/p>\n Bitcoin Protection:<\/strong> Unused addresses are quantum-safe through hash functions<\/p>\n Chrome PQC Support:<\/strong> ML-KEM since version 124 (2024)<\/p>\n Fact:<\/strong> IBM plans, according to its Quantum Roadmap, to have a fault-tolerant quantum computer with over 100,000 qubits by 2029 – a potential risk for today’s cryptographic standards like ECDSA.<\/p>\n Fact:<\/strong> The BSI warns in its Crypto Guide 2025 about “Harvest Now, Decrypt Later” attacks and recommends transitioning to post-quantum algorithms by no later than 2030.<\/p>\n The most credible estimates place cryptographically relevant quantum computers at 10-20 years. However, “Harvest now, decrypt later” attacks make the problem relevant today for data requiring long-term protection.<\/p>\n Not immediately, but prepare: yes. Google and Cloudflare are already testing hybrid TLS configurations. The transition will be gradual – similar to the migration from SHA-1 to SHA-256. Companies should ensure their infrastructure is “crypto-agile.”<\/p>\n Technically, a migration is possible but requires a soft or hard fork in the respective blockchain protocol. Bitcoin developers are already working on proposals like BIP-360 to enable a phased migration to post-quantum secure signature methods. Users will need to actively transfer their coins to new, quantum-resistant addresses.<\/p>\n Bitcoin and Cryptography: Masterpiece of IT Security<\/a><\/p>\n Blockchain Cryptography for the Security Industry<\/a><\/p>\n Checklist for Security Budget 2025 Planning<\/a><\/p>\n Source Title Image: Pexels<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"Quantum computers threaten the cryptography that underpins our digital infrastructure – from TLS to VPNs and Bitcoin. However, the crypto community is responding faster than expected. A look at the post-quantum strategies shaping tomorrow’s security architecture. Key Takeaways NIST finalizes the first post-quantum cryptography standards in 2024 (CRYSTALS-Kyber, CRYSTALS-Dilithium) Bitcoin is preparing […]","protected":false},"author":55,"featured_media":3812,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"post-quantum cryptography","_yoast_wpseo_title":"Post-Quantum Cryptography and Bitcoin: Shaping the Security Architecture of the","_yoast_wpseo_metadesc":"Post-quantum cryptography secures Bitcoin and digital infrastructure against quantum threats\u2014discover how the crypto community is staying ahead. Learn more now.","_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_meta-robots-adv":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-title":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_opengraph-image-id":0,"_yoast_wpseo_twitter-title":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","_yoast_wpseo_twitter-image-id":0,"_evm_translation_lang":"","featured_post":0,"featured_post_sortierung":0,"_wp_old_slug":["post_id-3813-2","post_id-3813"],"footnotes":""},"categories":[217],"tags":[],"class_list":["post-7434","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innovation"],"evm_reading_time_minutes":5,"wpml_language":"en","wpml_translation_of":3813,"_links":{"self":[{"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/posts\/7434","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/users\/55"}],"replies":[{"embeddable":true,"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/comments?post=7434"}],"version-history":[{"count":7,"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/posts\/7434\/revisions"}],"predecessor-version":[{"id":15924,"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/posts\/7434\/revisions\/15924"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/media\/3812"}],"wp:attachment":[{"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/media?parent=7434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/categories?post=7434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.securitytoday.de\/en\/wp-json\/wp\/v2\/tags?post=7434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Key Takeaways<\/h2>\n
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Why Quantum Computers Threaten Cryptography<\/h2>\n
NIST PQC: The New Standards<\/h2>\n
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Bitcoin and Post-Quantum: More Robust Than Expected<\/h2>\n
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“Harvest Now, Decrypt Later”: The Real Risk<\/h2>\n
What Companies Should Do Now<\/h2>\n
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Key Facts<\/h2>\n
Frequently Asked Questions<\/h2>\n
When will quantum computers be able to break encryption?<\/h3>\n
Do I need to replace my TLS certificates now?<\/h3>\n
Can existing wallets be transitioned to post-quantum algorithms?<\/h3>\n
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