Cothan

Team 42-b3yond-6ug successfully broke through in #AIxCC, advancing to the finals and winning a $2,000,000 prize provided by DARPA. During #DefCon, we had frank and in-depth exchanges with various teams. Keep up the good work, looking forward to seeing you again in 2025!

@mjos_crypto Wow, congratulation!

EUROCRYPT 2024 🙃 ( My contribution was to implement the thing for the paper, but yeah, the implementation ran with 1000 simulated parties with "real" security parameters. You can now do k-of-n signatures with almost any realistic k and n. This particular protocol has 3 rounds. )

Cool list of post-mortems: github.com/danluu/post-mo…

The greatest lectures about zero-knowledge proof systems by the fantastic Alessandro Chiesa, UC Berkeley are hidden and unlisted on YouTube. Now, you know the secret links 😀 youtube.com/playlist?list=…

@haxor31337 @Hacker0x01 @LamScun @thaivd98 @dunglt140150 @trieulieuf9 @yabeow @Jok3rDb @datph4m My guess: Vietnam meets Romania at top 4. Good luck to Vietnam.

Congrats to all team on the event @Hacker0x01 #AmbassadorWorldCup I'm really happy with my team for 1st in Group F with 48 points earned. Thank you all for taking the time to hunt and for your hard work. @LamScun @thaivd98 @dunglt140150 @trieulieuf9 @yabeow @Jok3rDb @datph4m ...

@cryptodavidw I spent years to find best combination of shell, setting configuration and all that. Fish, oh-my-zsh, zim, weird shell shit that I can't remember name. Then I stop at fig.io, it's good, and good enough to not worry about shit shell and configuration anymore.

@c0th4n Wow that looks pretty cool!

im a bit confused with oh-my-zsh vs prezto

#ePrint Lattice-Based Blind Signatures: Short, Efficient, and Round-Optimal: W Beullens, V Lyubashevsky, NK Nguyen, G Seiler ia.cr/2023/077

Hey Twitter, Can someone point me to any latest resource to learn more about bignum arithmetic? I read Bignum 2006 book but wonder how things have changed over the year.

Sign Message: Hawk > CRYSTALS-Dilithium > Falcon Verify Signature: Falcon > Hawk > CRYSTALS-Dilithium csrc.nist.gov/csrc/media/Eve…

As you might know. Korean has their own PQ Competition (KPQC). Here is a brief timeline: Nov 2022: First round. Dec 2023: Second round. Mar 2024: First KPQC Conference Sep 2024: Second KPQC Conference, announce result. Link:kpqc.or.kr

Lastly, to guarantee the results are reproducible, all of our implementation will be published. My Falcon code will be published. The Dilithium and Falcon in Hardware will be published as well.

The first paper is my high speed implementation of Falcon. With optimization on memory usage, fast FFT and NTT implementation. The second paper is our state-of-the-art high-speed design for Dilithum signature. Both paper will have comparison, ranking.

So my papers have been accepted to NIST 4th Conference. - "Fast Falcon Signature Generation and Verification Using ARMv8 NEON Instructions" - "High-Performance Hardware Implementation of Lattice-Based Digital Signatures" csrc.nist.gov/csrc/media/Eve…

@MKannwischer Thank you. I did go back and benchmark again. This version is still slower compare to x2 keccak + sha3 on M1.

Inspired from the work of Becker et al., I benchmark performance Keccak f1600 on Apple M1. Here are the result for 3,4,5-way: github.com/cothan/sphincs…

@MKannwischer @iwsec @yx7__ @bo_yin Congratulation! Do you have slide available?

Hey Twitter, for submisison to TCHES, what is the score range?