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Benjamin Carr, Ph.D. 👨🏻‍💻🧬<a href="https://hachyderm.io/tags/NIST" class="mention hashtag" rel="tag">#NIST</a> Selects <a href="https://hachyderm.io/tags/HQC" class="mention hashtag" rel="tag">#HQC</a> as Fifth Algorithm for Post <a href="https://hachyderm.io/tags/Quantum" class="mention hashtag" rel="tag">#Quantum</a> <a href="https://hachyderm.io/tags/Encryption" class="mention hashtag" rel="tag">#Encryption</a> HQC is the latest algorithm chosen by NIST’s Post-Quantum Cryptography project, which has overseen efforts since 2016 to head off potential threats from <a href="https://hachyderm.io/tags/quantumcomputers" class="mention hashtag" rel="tag">#quantumcomputers</a>. HQC will take its place alongside the four algorithms NIST selected previously. Three of those algorithms have been incorporated into finished standards, including <a href="https://hachyderm.io/tags/MLKEM" class="mention hashtag" rel="tag">#MLKEM</a>, which forms the core of the standard called <a href="https://hachyderm.io/tags/FIPS203" class="mention hashtag" rel="tag">#FIPS203</a>. <a href="https://www.hpcwire.com/2025/03/12/nist-selects-hqc-as-fifth-algorithm-for-post-quantum-encryption/" target="_blank" rel="nofollow noopener noreferrer" translate="no">https://www.hpcwire.com/2025/03/12/nist-selects-hqc-as-fifth-algorithm-for-post-quantum-encryption/</a>

The New Oil<a href="https://mastodon.thenewoil.org/tags/NIST" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NIST</a> Selects <a href="https://mastodon.thenewoil.org/tags/HQC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HQC</a> as Fifth Algorithm for <a href="https://mastodon.thenewoil.org/tags/PostQuantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PostQuantum</a> <a href="https://mastodon.thenewoil.org/tags/Encryption" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Encryption</a><a href="https://www.nist.gov/news-events/news/2025/03/nist-selects-hqc-fifth-algorithm-post-quantum-encryption" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.nist.gov/news-events/news/2025/03/nist-selects-hqc-fifth-algorithm-post-quantum-encryption</a><a href="https://mastodon.thenewoil.org/tags/cybersecurity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cybersecurity</a> <a href="https://mastodon.thenewoil.org/tags/pqe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#pqe</a>

Fiona :transbian: :autism:<a href="https://blahaj.zone/tags/NIST" rel="nofollow noopener noreferrer" target="_blank">#NIST</a> chose <a href="https://blahaj.zone/tags/HQC" rel="nofollow noopener noreferrer" target="_blank">#HQC</a> as their backup KEM and elected not to standardize <a href="https://blahaj.zone/tags/ClassicMcElice" rel="nofollow noopener noreferrer" target="_blank">#ClassicMcElice</a> for now among other reasons pointing to the standardization with <a href="https://blahaj.zone/tags/ISO" rel="nofollow noopener noreferrer" target="_blank">#ISO</a>. The argument to choose HQC over Bike is a higher confidence in IND-CCA-security of HQC. I cannot comment on whether that is a reasonable assessment, though I have no reason to doubt it, but I can say that in terms of reasons to make a choice this is of course a pretty good one. I’m not sure how I think about the decision regarding McElice, but I can to an extend see where they are coming from. This means there are now 9 post quantum algorithms approved, standardized or chosen for standardization by generally respected organizations: Key Encapsulation Mechanisms (“KEMs”): * ML-KEM (“Kyber”), based on Lattices, standardized by NIST * HQC, based on Codes, chosen for standardization by NIST * Classic McElice, based on codes, approved by BSI (de), ANSSI(fr), and NCSC (nl) * Frodo, based on lattices, approved by BSI (de), ANSSI(fr), and NCSC (nl) Signatures: * ML-DSA (“Dilithium”), based on Lattices, standardized by NIST * SLH-DSA (“SPHINCS+”), based on hashes, standardized by NIST * FN-DSA (“Falcon”), based on lattices, chosen for standardization by NIST Stateful Signatures: * XMSS, based on hashes, standardized by IEEE * LMS, based on hashes, standardized by IEEE Overall, this looks like a decent portfolio. Future standardization might add schemes based on multivariate-equations and isogonies, but for now this should do and give us a basis from which we can design more efficient schemes without being to concerned about the entire ground suddenly giving in because one random guy/gal finds a new attack-vector. <a href="https://blahaj.zone/tags/postquantumcryptography" rel="nofollow noopener noreferrer" target="_blank">#postquantumcryptography</a> <a href="https://blahaj.zone/tags/PQC" rel="nofollow noopener noreferrer" target="_blank">#PQC</a> <a href="https://blahaj.zone/tags/PQCrypto" rel="nofollow noopener noreferrer" target="_blank">#PQCrypto</a>

Hacker NewsNIST Selects HQC as Fifth Algorithm for Post-Quantum Encryption<a href="https://www.nist.gov/news-events/news/2025/03/nist-selects-hqc-fifth-algorithm-post-quantum-encryption" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.nist.gov/news-events/news/2025/03/nist-selects-hqc-fifth-algorithm-post-quantum-encryption</a><a href="https://mastodon.social/tags/HackerNews" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HackerNews</a> <a href="https://mastodon.social/tags/NIST" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#NIST</a> <a href="https://mastodon.social/tags/HQC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#HQC</a> <a href="https://mastodon.social/tags/PostQuantum" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PostQuantum</a> <a href="https://mastodon.social/tags/Encryption" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Encryption</a> <a href="https://mastodon.social/tags/Cybersecurity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Cybersecurity</a> <a href="https://mastodon.social/tags/QuantumComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#QuantumComputing</a>

Stefan GastI had the pleasure to contribute to the <a href="https://infosec.exchange/tags/USENIX2024" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#USENIX2024</a> paper "Divide and Surrender", recovering the full secret key from the reference implementation of the HQC Key Encapsulation Mechanism, exploiting a timing side channel arising from non-constant-time modulo operations. Thanks to Robin Leander Schröder and Qian Guo for this opportunity and congratulations to Robin Leander Schröder for getting his first paper accepted at USENIX Security!You can read the full paper here: <a href="https://stefangast.eu/papers/divide_and_surrender.pdf" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://stefangast.eu/papers/divide_and_surrender.pdf</a><a href="https://infosec.exchange/tags/divideandsurrender" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#divideandsurrender</a> <a href="https://infosec.exchange/tags/hqc" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hqc</a> <a href="https://infosec.exchange/tags/sidechannel" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sidechannel</a> <a href="https://infosec.exchange/tags/postquantumcrypto" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#postquantumcrypto</a> <a href="https://infosec.exchange/tags/usenixsecurity" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#usenixsecurity</a>

John Refior"Nearly 17,000 people across six countries may have died because they took hydroxychloroquine (HQC) during the first wave of COVID-19 in 2020, according to a new analysis published by French researchers."Trump repeatedly promoted the drug, touting hydroxychloroquine and a related drug called chloroquine as a possible 'miracle.'"'What do you have to lose? Take it,' Trump said during one of the White House coronavirus briefings." <a href="https://thehill.com/policy/healthcare/4389800-hydroxychloroquine-deaths-study/" target="_blank" rel="nofollow noopener noreferrer" translate="no">https://thehill.com/policy/healthcare/4389800-hydroxychloroquine-deaths-study/</a> — <a href="https://hachyderm.io/tags/HQC" class="mention hashtag" rel="tag">#HQC</a> <a href="https://hachyderm.io/tags/TiredOfWinning" class="mention hashtag" rel="tag">#TiredOfWinning</a> <a href="https://hachyderm.io/tags/covid" class="mention hashtag" rel="tag">#covid</a>

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