Just as horrible as you would expect: LLMs attempt to synthesize music using Python. Blog: commaok.xyz/ai/bella-ciao/ Listen: bella-ciao.exe.xyz

Linear self-equivalence of the known families of APN functions: a unified point of view (Jules Baudrin, Anne Canteaut, Léo Perrin) ia.cr/2026/1012

wow — the preprint host, arxiv, is banning authors for a year if they submit papers with hallucinated citations 🤖

Efficiently deciding and recovering CCZ and EA equivalence for arbitrary vectorial Boolean functions using the partition refinement framework (Nikolay Kaleyski, Joakim Sunde) ia.cr/2026/940

We are hiring for PhD and postdoc postions in symmetric cryptography.

The list of accepted papers to PKC 2026 is available online: pkc.iacr.org/2026/accepte...

The paper shows how to find affine maps agreeing with an S-box on as many as possible inputs. Look for presentation at #Eurocrypt 2026 today! The code is already available. Also check out a vide-coded interactive tool, it's fun to play with: affine.group/pages/greedy...

Magic Pot: Cryptanalysis of full AIM2 in the standard and related-/reused-key settings using new elimination framework (Alex Biryukov, Pablo García Fernández, Aleksei Udovenko) ia.cr/2026/903

Algorithmic Toolkit for Linearization of S-boxes (Alex Biryukov, Philip Tureček, Aleksei Udovenko) ia.cr/2026/913

Remote attestation is a heavily underdiscussed threat to computing freedom. People often mistakenly dismiss it with "I will run my own fork (of the OS or browser) / Magisk", not understanding that with hardware attestation, you're literally unable to 1/

Our paper about cryptanalysis of AIM2 is on the front page of eprint 😀 Look for tomorrow's presentation at #Eurocrypt 2026. I will share more details later. ia.cr/2026/903

On the Common Bias of Majorities: Poly-Time Attacks on THR-XOR PRGs (Antonio Giulio D’Antona, Pierrick Méaux, Akin Ünal) ia.cr/2026/880

On Why and How to Minimize the Arithmetic Complexity of Fast Matrix Multiplication Algorithms (Erik Mårtensson, Paul Stankovski Wagner) ia.cr/2026/849

📹The COSIC Seminar on "Attacks and Remedies for Randomness in AI: Cryptanalysis of PHILOX and THREEFRY" by Yevhen Perehuda (Ruhr University Bochum) is now online: www.youtube.com/watch?v=_qpA...

Combat LLM spam by building a web of trust. Vouching is live on Tangled! 🎭 blog.tangled.org/vouching/

If you're leaving GitHub, we'd be very happy to chat! We work remotely, pay top-end of European salaries and are hell bent on building the best code forge ever. We're hiring for one intermediate/senior role right now: jobs.tangled.org/software-eng.... Go, Firecracker, distributed systems.

we need a federation of forges blog.tangled.org/federation/

I taught my last lecture/class today, of my first class ever taught outside of the United States (in Paris). It was very interesting to see how US and European (particularly French, but I gather broader than France) expectations were for how classes operate at the university level.

How much does it cost to buy your way onto a scientific paper? To answer this question (and better understand the global market for academic reputation manipulation), we compiled BuyTheBy, a massive dataset of thousands of advertisements from paper mills in seven different countries. Link below!

X24 Down: Cryptanalysis of Hankel-based Multivariate Signatures (Alexandre Camelin, Thai Hung Le, Brice Minaud, Phong Q. Nguyen, Florian Tousnakhoff) ia.cr/2026/803

CryptoExperts is co-organizing "Privacy in the Post-Quantum Era: Challenges & Migration Strategies" (EU PQCSA), a CPDP pre-event. Discover PQ privacy challenges with industry & public actors. Free to attend. Matthieu (@mrivain.bsky.social) & Mélissa will be there! 🔗 cryptoexperts.com/pqcsa-worksh...

Divide-and-Pair: Faster subgroup membership testing for elliptic curves (Yu Dai, Youssef El Housni, Dimitri Koshelev, Krijn Reijnders) ia.cr/2026/749

🏷️Introducing the Publication Facts Label: Another tool in your research integrity toolkit 🧰 In this guest blog post, open research consultant @alicemeadows.bsky.social introduces the Publication Facts Label (PFL) by the @pkp.sfu.ca (PKP) 🔗 blog.doaj.org/2026/04/22/i...

Cross-Paradigm Models of Restricted Syndrome Decoding with Application to CROSS (Étienne Burle, Aleksei Udovenko) ia.cr/2026/705

CLAASP-MP: An Automated MILP Framework for Monomial Prediction (Emanuele Bellini, Mohamed Rachidi, Sharwan K. Tiwari) ia.cr/2026/735

Really worth a look: securitynotionszoo.com

Boolean Arithmetic over 𝔽₂ from Group Commutators (Marc Joye) ia.cr/2026/701

Looking forward to AM-PQC 2026, the Workshop on Algebraic Methods in Post-Quantum Cryptography this August in Macedonia! pqcrypto.cs.ru.nl/ampqc/ Stipends for students are available. Apply before May 4th!

Open Problems in List Decoding and Correlated Agreement (Gal Arnon, Dan Boneh, Giacomo Fenzi) ia.cr/2026/680

These "discover something" journals from Springer Nature are here to steal your research money, as those from MDPI and Frontiers (and many others). ⚒️ 🧪 Learn more here: the-strain-on-scientific-publishing.github.io/website/post... 2/2

Counting and recovering the quadratic relations of a vectorial function (Irene Villa) ia.cr/2026/652

Expanders Meet Reed–Muller: Easy Instances of Noisy k-XOR (Jarosław Błasiok, Paul Lou, Alon Rosen, Madhu Sudan) ia.cr/2026/664

4색 정리 새로운 증명이 arXiv에 올라왔습니다. New proof of the four color theorem by Yuta Inoue, Ken-ichi Kawarabayashi, Atsuyuki Miyashita, Bojan Mohar, Carsten Thomassen, Mikkel Thorup arxiv.org/abs/2603.24880

...we show that Shor's algorithm can be executed at cryptographically relevant scales with as few as 10,000 reconfigurable atomic qubits. ... the runtime for discrete logarithms on the P-256 elliptic curve could be just a few days for a system with 26,000 physical qubits, arxiv.org/abs/2603.28627

I should add to this: winner of best paper award at Eurocrypt 2026!! As a single author. During his PhD. Incredible achievement!(protip: he will graduate soon-ish 👀)

> We demonstrate that Shor’s algorithm...can execute with either ≤ 1200 logical qubits and ≤ 90 million Toffoli gates or ≤ 1450 logical qubits and ≤ 70 million Toffoli gates research.google/blog/safegua... quantumai.google/static/site-...

Some first-rate science writing: For this story, @jdrakephd.bsky.social carefully read our recent paper and then we spent a very fun 90 minutes or so talking on zoom. His article that gets right to the heart of our model, explains it clearly, and then explores why it will matter in the future.

Writeup of the crypto-challenge MonoDOOM ETERNAL from #KalmarCTF - A follow up from last-years MonoDOOM challenge, this time with botched side-channel protection! jonathke.github.io/monoDOOM-ETE...

High-Order Galois Automorphisms for TNFS Linear Algebra (Haetham Al Aswad, Cécile Pierrot, Emmanuel Thomé) ia.cr/2026/560

Nature Publishing Group finding more dastardly ways to lock us in, well beyond what I complained about in my letter declining reviewing for them

This is the distribution of the number of pages of papers submitted to Crypto 2026. 314 of the 752 papers have at least 50 pages, and 22 have at least 100 pages. Clearly the 30 page limit isn't cutting it.

Cryptanalysis of Two Alternating Moduli Weak PRFs (Kai Hu, Gregor Leander, Håvard Raddum, Arne Sandrib, Aleksei Udovenko) ia.cr/2026/482

An attack on the CFS scheme and on TII McEliece challenges (Magali Bardet, Axel Lemoine, Jean-Pierre Tillich) ia.cr/2026/430

Please welcome the #defcon34 #CTF organizers, Benevolent Bureau of Birds! You can sample their wares in the #DC34CTF Qualifier Round, May 22-24, 2026. The Birds are online at bbbirds.org. Info about our legendary CTF: www.defcon.org/html/links/d.... We hope we'll see you in the arena.

Coppersmith’s Method for Solving Modular Inversion Hidden Number Problem via Determinant-Based Elimination (Zhaopeng Ding, Zhaopeng Dai, Baofeng Wu, Rundong Wang, Yanshuo Zhang) ia.cr/2026/423

About page limits. Why do CS conferences have them? If you look at the length of papers posted to eprint.iacr.org, 96% of them are at most 75 pages. Seems like we should just publish them instead of jumping through hoops to fit the old world of paper.

today, we're announcing our €3,8M ($4.5M) seed financing round, led by byFounders with participation from Bain Capital Crypto, Antler, Thomas Dohmke (former CEO of GitHub), Avery Pennarun (CEO of Tailscale) among other incredible angels. read more on what's next: blog.tangled.org/seed

Leave big tech behind! How to replace Amazon, Google, X, Meta, Apple – and more

Fast cube roots in Fp2 via the algebraic torus (Youssef El Housni) ia.cr/2026/392

Determining those Boolean functions whose restrictions to affine spaces are plateaued (Claude Carlet, Darrion Thornburgh) ia.cr/2026/386