Consider attending our CASA summer school on cryptography and distributed computing from June 22.-25. in Bochum! Registration is open until March 12. casa.rub.de/en/events/ca...

Congrats to Dr. Benedikt Wagner for receiving the @helmholtz.de Doctoral Award! 🎉 His dissertation was supervised by Dr. @julianloss.bsky.social at CISPA. Benedikt is now bringing his cryptographic expertise to the Ethereum Foundation in Switzerland. Wishing him continued success and inspiration!

We give a nearly optimal algorithm for the parallel broadcast problem for the t<n/2 setting using *only basic public key crypto*. Our protocol has major potential for making MPC and VSS scalable without relying on more advanced primitives. At Crypto 2025!

New paper at Crypto 2025! We revisit one of the famous works of King et al. on leader election/consensus and show that the original paper’s proof has several major gaps. Although we aren’t able to prove the original protocol secure, we suggest a suitable modification along with a full proof.

We present the first three-round Schnorr threshold signature scheme with security against t<n adaptive corruptions in the plain ROM. At Crypto 2025!

What’s up, long time no see. I decided to move here after Twitter/X became unusable, but I realized that this was actually a great opportunity to get off of social media for good, read a book, go outside, and make some new friends. Anyway, I’m back; what did I miss?

Crypto Eprint just broke 2k submissions in one year for the first time. Great to see the field continue to grow.

I live in Germany which is typically reluctant to adopt digital/electronic solutions to common tasks, payments in particular. However, QR-code bills have become widely popular here and I think that’s a really great development as they are so convenient. How widely are these used in other countries?

Enjoying Milan on a cold morning. What’s up @suinetwork.bsky.social

“thanks so much for the feedback”

Is this… is this… a list of cybersecurity experts without a single cryptographer 😰?

Here is a list of amazing (applied) crypto folks I found here: bsky.app/profile/did:...

A wild red mushroom appears in the tall grass! ID anyone? #fungifriends

A beautiful cluster of porcelain mushrooms (oudemansiella mucida) in Alsace, France #fungifriends

Found this beautiful specimen in Alsace, France last month #fungifriends

Please answer / dm us to be added/ removed. go.bsky.app/8daoJcj

The pack: go.bsky.app/PsmYwLY

Finally, a formal hello. Cryptographer. I worked on ZK (zero-knowledge) before it was cool --- I still have those voices in my head from 1998 telling me that I should do something that actually matters. One of my blunders was to recommend Estonia to use ZK in e-voting... back in 2001.

And a ZK starter pack. I hope many of those people will become more active here. go.bsky.app/Ap5S4vq

New paper at SODA 25: eprint.iacr.org/2024/770 We show that you can broadcast in sublinear rounds with dishonest majority given only a bare PKI setup and a uniform CRS. Prior work in this setting assumes a trusted dealer/correlated setup.

'Tis the season ... of UK research fellowship interviews! Here are some tips & tricks to help you prepare - featuring a list of 100(!) common Q&A questions elisagranato.com/how-to-apply...

I’m new here, so I’ll briefly introduce myself. My name is Julian and I’m a cryptographer who also frequently dabbles in distributed algorithms. In my free time, I train for road races (mostly half marathons) and do nerdy things. My wife and I have three adorable cats called Kami, Sweep and Janus.

Any cryptographers out there?