Security Cryptography Whatever

The robots are at it again, and this time they’re solving, and breaking(?), math and cryptography! Things have been happening in the lattice corner including new leapfrogging complexity results in the closest vector problem (CVP), AND a possible poly-time quantum attack against the dihedral coset problem (DCP) that made everyone freak out for about a week (UPDATE: looks like it’s busted: https://eprint.iacr.org/2026/1693). ALSO, there was an important distinguisher attack against Classic McEliece, which on its face doesn’t sound like a big deal, unless you’re familiar with the track record of efficient distinguishers in the history of code-based cryptography… 😱To help us make sense  of all this we are joined again by OG friend of the pod Chris Peikert! We had trouble with his audio but tried our best to fix it, apologies.Transcript: https://securitycryptographywhatever.com/2026/08/26/ai-lattice-proofs-with-chris-peikert/Links:- https://openai.com/index/ten-advances-in-mathematics/- https://cdn.openai.com/pdf/ten-proofs-oai.pdf- https://x.com/ChrisPeikert/status/2083534770403750025- https://bsky.app/profile/chrispeikert.bsky.social/post/3msp3boueis2z- https://en.wikipedia.org/wiki/Boolean_satisfiability_problem- https://knowyourmeme.com/memes/wordcel-shape-rotator-mathcel- Chen 2024: https://eprint.iacr.org/2024/555- https://eprint.iacr.org/2026/1630- https://eprint.iacr.org/2026/1693- CVP within n^(1/2-ɛ) -  : https://eprint.iacr.org/2026/1655"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@dadrian)

We invited Mark Schultz-Wu on the podcast to talk about the history of lattice cryptography. When lattices are explained in plain english, they are actually quite simple! I don't think any of us have ever seen Deirdre so happy. If you're watching the video version, there's a section that's 6.1 minutes long with no cuts and consists just of Deirdre vigorously agreeing with what Mark is saying while smiling. What a time to be alive.Anyway, we are hosting another happy hour in Vegas between Black Hat and DEF CON! It's sponsored by Teleport! Thank you to Teleport, and dear readers, you should go check them out. Check out our socials or the podcast site to register.Transcript: https://securitycryptographywhatever.com/2026/07/27/lattices-with-mark-schultz-wu/Links:Mark's IETF Post https://mailarchive.ietf.org/arch/msg/tls/HznE1IcCjstEjhh4M1p59qX1JlQ/NTRU https://en.wikipedia.org/wiki/NTRUThe original lattices are hard paper https://www.scirp.org/reference/referencespapers?referenceid=3401227The original LWE for cryptography paper https://arxiv.org/abs/2401.03703Entropic LWE https://eprint.iacr.org/2020/119Dilithium round 3 submission: https://pq-crystals.org/dilithium/data/dilithium-specification-round3.pdfRecent attacks on Classic McEliece: https://eprint.iacr.org/2024/1694Lectures on post-quantum cryptography from Alfred Menezes (an originator of elliptic curve cryptography) https://www.youtube.com/@cryptography101-alfredFalcon https://csrc.nist.gov/csrc/media/Presentations/2024/falcon/images-media/prest-falcon-pqc2024.pdfRegev: https://cims.nyu.edu/~regev/#researchTightness in Proofs: https://eprint.iacr.org/2016/360.pdf"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@dadrian)

The dear leader has actually bleated out some not-dumb executive orders (EOs) to accelerate adoption of post-quantum crypto for the US government! This looks to be in response to a flurry of advancements in quantum computing and quantum attack algorithms a few months ago. We cram legalize into our eyeballs— plus, ECDSA.fail!Watch on YouTube: https://www.youtube.com/watch?v=7ZwQpN_F6P8Transcript: https://securitycryptographywhatever.com/2026/07/02/trumps-golden-post-quantum-eosLinks:- The EO https://www.whitehouse.gov/presidential-actions/2026/06/securing-the-nation-against-advanced-cryptographic-attacks/- CNSA2 https://media.defense.gov/2022/Sep/07/2003071836/-1/-1/0/CSI_CNSA_2.0_FAQ_.PDF- https://media.defense.gov/2025/May/30/2003728741/-1/-1/0/CSA_CNSA_2.0_ALGORITHMS.PDF- https://www.ecdsa.fail/- https://blog.google/innovation-and-ai/technology/safety-security/cryptography-migration-timeline/- https://blog.cloudflare.com/post-quantum-roadmap/- https://blog.google/innovation-and-ai/technology/research/neutral-atom-quantum-computers/- https://en.wikipedia.org/wiki/FedRAMP- https://www.whitehouse.gov/presidential-actions/2026/06/ushering-in-the-next-frontier-of-quantum-innovation/- https://blog.trailofbits.com/2026/04/17/we-beat-googles-zero-knowledge-proof-of-quantum-cryptanalysis/- https://scottaaronson.blog/?p=9861"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@dadrian)

We talk to Michał Zalewski (lcamtuf) about the vulnpocalypse and if we even need fuzzers anymore. This episode may be export controlled at a future date.Watch on YouTube: https://www.youtube.com/watch?v=uI9CSgB4p9oTranscript: https://securitycryptographywhatever.com/2026/06/14/facing-the-vulnpocalypse-with-lcamtufhttps://github.com/google/aflhttps://www.reddit.com/r/claude/comments/1tqtenf/anthropic_said_today_that_mythos_is_coming_to_all/https://github.com/google/clusterfuzzhttps://en.wikipedia.org/wiki/Jevons_paradoxhttps://en.wikipedia.org/wiki/XZ_Utils_backdoorhttps://en.wikipedia.org/wiki/Brighton_hotel_bombinghttps://curl.se/https://ftp.openbsd.org/pub/OpenBSD/patches/7.8/common/025_sack.patch.sighttps://www.wired.com/story/last-pass-vulnerability-password-safe/https://nostarch.com/tangledwebhttps://nostarch.com/silence.htmhttps://nostarch.com/practical-doomsdayhttps://nostarch.com/secret-life-of-circuitshttps://www.youtube.com/c/3blue1brown"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@dadrian)