Post-Quantum Cryptography and the Future of Data Security
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<div class="fw-page-builder-content"> <section class="fw-main-row-custom fw-main-row-top auto fw-section-position-back tf-sh-7cd4470ba11c9707d941919887b22ab5"> <div class="fw-container"> <div class="fw-row"> <div id="column-68d522b151386" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-text-box tf-sh-744c4ab91639cf3876f2f719c34c01ed "> <div class="fw-text-inner"> <p>Quantum computing is no longer science fiction. In the last ten years, researchers and tech companies have competed to build quantum computers. These computers can solve problems that regular computers cannot.</p> <p>This progress opens doors to innovations in fields like medicine, materials science, and artificial intelligence. However, it also poses a big risk. Current encryption methods are important for data protection and cybersecurity. These methods could be broken in the future.</p> <p>This is where <strong>post-quantum cryptography (PQC)</strong> comes in.</p><div class="code-block code-block-12 ai-track" data-ai="WzEyLCIiLCJCbG9jayAxMiIsIiIsMV0=" style="margin: 8px 0; clear: both;"> <style> .ai-rotate {position: relative;} .ai-rotate-hidden {visibility: hidden;} .ai-rotate-hidden-2 {position: absolute; top: 0; left: 0; width: 100%; height: 100%;} .ai-list-data, .ai-ip-data, .ai-filter-check, .ai-fallback, .ai-list-block, .ai-list-block-ip, .ai-list-block-filter {visibility: hidden; position: absolute; width: 50%; height: 1px; top: -1000px; z-index: -9999; margin: 0px!important;} .ai-list-data, .ai-ip-data, .ai-filter-check, .ai-fallback {min-width: 1px;} </style> <div class="ai-rotate ai-unprocessed ai-timed-rotation ai-12-1" data-info="WyIxMi0xIiwxXQ==" style="position: relative;"> <div class="ai-rotate-option" style="visibility: hidden;" data-index="1" data-name="VGVjaHN0cm9uZyBHYW5nIFlvdXR1YmU=" data-time="MTA="> <div class="custom-ad"> <div style="margin: auto; text-align: center;"><a href="https://youtu.be/Fojn5NFwaw8" target="_blank"><img src="https://securityboulevard.com/wp-content/uploads/2024/12/Techstrong-Gang-Youtube-PodcastV2-770.png" alt="Techstrong Gang Youtube"></a></div> <div class="clear-custom-ad"></div> </div></div> </div> </div> </div> </div></div> <div class="code-block code-block-15" style="margin: 8px 0; clear: both;"> <script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-2091799172090865" crossorigin="anonymous"></script> <!-- SB In Article Ad 1 --> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-2091799172090865" data-ad-slot="8723094367" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script></div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b1515f9" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-divider-space space-sm clearfix"></div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b151779" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-heading fw-heading-left tf-sh-ab6e2b4df228025c4181ebef729a2b30"> <h2 class="fw-special-title"><b>What is Post-Quantum Cryptography?</b></h2> </div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b15196c" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-text-box tf-sh-82290b8ffc7e150a46e2a61ef0db9795 "> <div class="fw-text-inner"> <p><strong>Post-quantum cryptography</strong> is a new type of encryption. It is made to resist attacks from quantum computers. PQC algorithms are not like regular cryptography. Regular cryptography uses math problems, such as large number factorization (RSA) or elliptic curve computations (ECC).</p> <p>PQC, on the other hand, uses harder problems. A strong quantum computer cannot solve these problems easily.</p> <p>Put simply:</p> <ul> <li><strong>Current encryption</strong> (RSA, ECC, etc.) = secure against today’s hackers but vulnerable to future quantum computers.</li> <li><strong>Post-quantum cryptography</strong> = future-proof encryption designed to withstand both classical and quantum attacks.</li> </ul> <p>For businesses, the main point is that preparing for PQC is not only about technology. It also involves long-term compliance and managing risks.</p> </div> </div></div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b151b4a" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-divider-space space-sm clearfix"></div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b151c9f" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-heading fw-heading-left tf-sh-a9634861cb4bdcb016b8c9fe9c612c0d"> <h2 class="fw-special-title"><b>Why Post-Quantum Cryptography Matters for Data Privacy?</b></h2> </div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b151e52" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-text-box tf-sh-6785379b3f3670e3089d3bf87dce6dc8 "> <div class="fw-text-inner"> <p>Data privacy laws like the <strong>GDPR</strong> require organizations to use strong security measures to protect personal data. Quantum computers that can break encryption are not available for sale yet. However, regulators and governments are already giving advice on how to prepare for this risk.</p> <p>If your organization keeps sensitive customer data for years, like financial records or health information, attackers could steal it. They might store that encrypted data now and wait until quantum computers can decrypt it. This is known as a “harvest now, decrypt later” attack.</p> <p>That’s why post-quantum cryptography is not a distant academic issue. It is a genuine business issue regarding compliance, safeguarding data, and preserving customer trust.</p> </div> </div></div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b152005" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-divider-space space-sm clearfix"></div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b15215c" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-heading fw-heading-left tf-sh-a39df8cc4fd589aa967bb312c3393423"> <h3 class="fw-special-title"><b>Post-Quantum Cryptography Algorithms</b></h3> </div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b15230d" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-text-box tf-sh-db5f9219d04b39ac69d20da903d0cfd1 "> <div class="fw-text-inner"> <p>In 2024, the <strong>U.S. National Institute of Standards and Technology (NIST)</strong> made an announcement. They introduced their first set of standard algorithms for <strong>post-quantum cryptography</strong>. These include:</p> <ul> <li><strong>CRYSTALS-Kyber</strong> – for encryption and key exchange.</li> <li><strong>CRYSTALS-Dilithium</strong> – for digital signatures.</li> <li><strong>SPHINCS+</strong> – a backup option for digital signatures, based on hash functions.</li> <li><strong>Falcon</strong> – another efficient digital signature algorithm.</li> </ul> <p>These algorithms were chosen because they can resist known quantum attacks. They are also efficient for real-world systems. Governments, large enterprises, and software vendors are now beginning the process of integrating these into security products and infrastructure.</p> <p>For small and mid-sized businesses, the change may take years. However, planning now helps you keep up with new encryption standards.</p> </div> </div></div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b1524de" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-divider-space space-sm clearfix"></div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b152634" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-heading fw-heading-left tf-sh-475bbcd6f8918c0da7adf9cea8c4519b"> <h4 class="fw-special-title"><b>What Businesses Should Do Today</b></h4> </div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b1527ee" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-text-box tf-sh-69274f73154b91dee9c1bec86f4aa5cd "> <div class="fw-text-inner"> <p>You don’t have to change your whole IT system at once. There are practical steps businesses can take to get ready for the future after quantum computing. The goal is to raise awareness, stay flexible, and keep strong compliance practices. This way, you can transition smoothly when new encryption standards become common.</p> <p><strong>1. Build awareness</strong></p> <p>Start by ensuring leadership and staff understand the basics of PQC and its implications. Training sessions, awareness campaigns, and internal workshops can help demystify the topic and put it on the business agenda. Cybersecurity is no longer just a technical issue; it’s also a governance, compliance, and reputational one.</p> <p><strong>2. Assess your data</strong></p> <p>Take stock of the sensitive data your business collects and stores. Find out where it is stored, who can access it, and how long it needs to stay secure. The longer you keep things like financial records, health data, or customer histories, the greater the risk.</p> <p>Future quantum computers might be able to uncover this information. A thorough data mapping exercise today saves costly remediation later.</p> <p><strong>3. Ask your vendors</strong></p> <p>Your technology and cloud providers play a critical role in your security posture. Start conversations now about their roadmap for post-quantum cryptography and how they plan to integrate NIST-approved standards. By holding vendors accountable, you lower risk. You also show regulators that you are managing third-party compliance.</p> <p><strong>4. Plan for crypto-agility</strong></p> <p>Crypto-agility means ensuring your systems and processes are flexible enough to upgrade to new algorithms when required. Businesses that build this adaptability now will avoid expensive lock-in or rushed replacements later. Think of it as future-proofing your IT infrastructure in the same way you future-proof your business strategy.</p> <p><strong>5. Document everything</strong></p> <p>From a GDPR perspective, <a href="https://www.sovy.com/gap-analysis/" rel="noopener noreferrer"><strong>documentation</strong></a> is just as important as action. Regulators expect organizations to demonstrate accountability, which means recording risks, policies, and controls. A clear audit trail shows how you assess and prepare for PQC. This helps prove compliance, protect your reputation, and build trust with customers and partners.</p> </div> </div></div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b152a20" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-divider-space space-sm clearfix"></div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b152b7e" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-heading fw-heading-left tf-sh-bd17853a5ab5c4581d28ca4bd60664ab"> <h5 class="fw-special-title"><b>How Sovy Can Help</b></h5> </div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b152d36" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-text-box tf-sh-d5cc9a9c300c89f271c837a67aad14a4 "> <div class="fw-text-inner"> <p>At Sovy, we know that many small and medium-sized businesses lack a dedicated cryptography expert. That’s where we come in:</p> <p><strong>Outsourced Data Protection Officer (DPO)</strong></p> <ul> <li><a href="https://www.sovy.com/dpo-as-a-service/" rel="noopener noreferrer"><strong>Our outsourced DPO service</strong></a> gives your organisation expert oversight on compliance and security matters. A Sovy DPO helps you understand rules, keep policies current, and get ready for new risks like post-quantum cryptography. Instead of struggling alone, you gain a trusted partner who monitors changes in law and technology for you.</li> </ul> <p><strong>Gap Analysis and Policy Tools</strong></p> <p>GDPR requires organisations to prove compliance, not just claim it. <a href="https://www.sovy.com/gap-analysis/" rel="noopener noreferrer"><strong>Sovy’s Gap Analysis tool</strong></a> helps you evaluate your current encryption practices, risk assessments, and security plans against regulatory expectations. It highlights strengths, pinpoints weaknesses, and guides you toward practical improvements.</p> <p>Our <strong>p<a href="https://www.sovy.com/gap-analysis/">olicy templates and documentation tools</a></strong> provide ready-made frameworks. You can use these to quickly put improvements into action. As post-quantum cryptography standards change, these resources help you find compliance gaps.</p> <p>They also show the steps you are taking to close those gaps. Together, these services help you demonstrate to regulators and customers that your organization is proactive and accountable. You will be secure today and ready for tomorrow.</p> <p><strong>Looking Ahead</strong></p> <p>Post-quantum cryptography is not an optional upgrade; it is the next chapter of cybersecurity. The change will take years, but businesses that prepare early will gain an edge. They will have better compliance, lower risk, and more trust from customers.</p> <p><a href="https://www.sovy.com/" rel="noopener noreferrer"><strong>Sovy</strong></a> is here to help you on your journey. We offer practical tools, expert guidance, and compliance solutions for organizations like yours.</p> </div> </div></div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b152f4b" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-divider-space space-sm clearfix"></div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b1530a4" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-heading fw-heading-left tf-sh-9e6e086229bf49734a737e035800eb5a"> <h6 class="fw-special-title"><b>FAQs</b></h6> </div> </div> </div> </div> </div> <div class="fw-row"> <div id="column-68d522b15325d" class="fw-col-sm-12 tf-sh-75ae44a7fac216ce8642dc2807275fbe"> <div class="fw-wrap-col-inner clearfix "> <div class="fw-col-inner"> <div class="fw-text-box tf-sh-806f3dbea5586ed392d93cc56497b312 "> <div class="fw-text-inner"> <p><strong>What is post-quantum cryptography?</strong></p> <p>Post-quantum cryptography (PQC) includes new encryption methods designed to resist attacks from quantum computers. These future-proof algorithms protect data against both classical and quantum threats.</p> <p>They are being standardised by global bodies like NIST, ensuring businesses can rely on them for real-world use. For organisations, PQC is not just a technical choice but a compliance and trust-building necessity.</p> <p><strong>When will quantum computers break current encryption?</strong></p> <p>Experts disagree on the exact timeline, but some predict within 10–15 years. Since sensitive data must often stay secure for decades, early preparation is the safest strategy.</p> <p>The risk is that attackers may already be harvesting encrypted data today to decrypt later (“harvest now, decrypt later”). This makes it critical for businesses to plan now rather than wait for a fixed date.</p> <p><strong> Which post-quantum cryptography algorithms are now standard?</strong></p> <p>NIST has approved algorithms such as Kyber, Dilithium, SPHINCS+, and Falcon. These were selected for their strong resistance to quantum attacks and real-world efficiency.</p> <p>Each algorithm has a different purpose. Kyber is used for encryption and key exchange. Dilithium is for digital signatures. SPHINCS+ and Falcon offer alternatives for flexibility and resilience.</p> <p><strong>Do small businesses need to worry about PQC now?</strong></p> <p>Yes, GDPR requires organisations to plan for new risks and adopt best practices. Starting early helps small businesses avoid compliance gaps and costly security failures.</p> <p>Even if implementation takes time, documenting your awareness and preparation shows accountability to regulators and builds trust with customers.</p> <p><strong>What is a “harvest now, decrypt later” attack?</strong></p> <p>This is when cybercriminals steal and store encrypted data today with the goal of decrypting it once quantum computers become powerful enough. Sensitive records such as medical or financial data are particularly at risk.</p> <p>Since these records may need to stay secure for many years, businesses should think about PQC now. This will help prevent future breaches, even if quantum threats seem far away.</p> </div> </div></div> </div> </div> </div></div> </section> </div><p>The post <a rel="nofollow" href="https://www.sovy.com/blog/post-quantum-cryptography-data-security/"><b>Post-Quantum Cryptography and the Future of Data Security</b></a> appeared first on <a rel="nofollow" href="https://www.sovy.com/">Sovy</a>.</p><div class="spu-placeholder" style="display:none"></div><div class="addtoany_share_save_container addtoany_content addtoany_content_bottom"><div class="a2a_kit a2a_kit_size_20 addtoany_list" data-a2a-url="https://securityboulevard.com/2025/09/post-quantum-cryptography-and-the-future-of-data-security/" data-a2a-title="Post-Quantum Cryptography and the Future of Data Security"><a class="a2a_button_twitter" href="https://www.addtoany.com/add_to/twitter?linkurl=https%3A%2F%2Fsecurityboulevard.com%2F2025%2F09%2Fpost-quantum-cryptography-and-the-future-of-data-security%2F&linkname=Post-Quantum%20Cryptography%20and%20the%20Future%20of%20Data%20Security" title="Twitter" rel="nofollow noopener" target="_blank"></a><a class="a2a_button_linkedin" href="https://www.addtoany.com/add_to/linkedin?linkurl=https%3A%2F%2Fsecurityboulevard.com%2F2025%2F09%2Fpost-quantum-cryptography-and-the-future-of-data-security%2F&linkname=Post-Quantum%20Cryptography%20and%20the%20Future%20of%20Data%20Security" title="LinkedIn" rel="nofollow noopener" target="_blank"></a><a class="a2a_button_facebook" href="https://www.addtoany.com/add_to/facebook?linkurl=https%3A%2F%2Fsecurityboulevard.com%2F2025%2F09%2Fpost-quantum-cryptography-and-the-future-of-data-security%2F&linkname=Post-Quantum%20Cryptography%20and%20the%20Future%20of%20Data%20Security" title="Facebook" rel="nofollow noopener" target="_blank"></a><a class="a2a_button_reddit" href="https://www.addtoany.com/add_to/reddit?linkurl=https%3A%2F%2Fsecurityboulevard.com%2F2025%2F09%2Fpost-quantum-cryptography-and-the-future-of-data-security%2F&linkname=Post-Quantum%20Cryptography%20and%20the%20Future%20of%20Data%20Security" title="Reddit" rel="nofollow noopener" target="_blank"></a><a class="a2a_button_email" href="https://www.addtoany.com/add_to/email?linkurl=https%3A%2F%2Fsecurityboulevard.com%2F2025%2F09%2Fpost-quantum-cryptography-and-the-future-of-data-security%2F&linkname=Post-Quantum%20Cryptography%20and%20the%20Future%20of%20Data%20Security" title="Email" rel="nofollow noopener" target="_blank"></a><a class="a2a_dd addtoany_share_save addtoany_share" href="https://www.addtoany.com/share"></a></div></div><p class="syndicated-attribution">*** This is a Security Bloggers Network syndicated blog from <a href="https://www.sovy.com/feed/">Sovy</a> authored by <a href="https://securityboulevard.com/author/0/" title="Read other posts by Irina">Irina</a>. Read the original post at: <a href="https://www.sovy.com/blog/post-quantum-cryptography-data-security/">https://www.sovy.com/blog/post-quantum-cryptography-data-security/</a> </p>