Giacomo Fenzi
@GiacomoFenzi
PhD student @EPFL, previously @ETH Interested in cryptography at large, post quantum and interactive proofs in particular. Interista alla Prisco.
🪄✨ And for our next trick, choose a code, any code! Introducing WARP 🌀, the first linear-time accumulation scheme. Brought to you by @benediktbuenz, Alessandro Chiesa, @kleptographic and myself. 📚: ia.cr/2025/753 🧑💻: (soon)
We're building open-source multilinear primitives in the WHIR repo, including an optimized sumcheck protocol: github.com/tcoratger/whir… If you have experience with sumcheck optimizations, we'd love to hear from you. Contributions welcome!
This one was super fun. We talked with Jonas Hofmann, Kien Tuong Trong, and Matilda Backendal about a cross-section study of "E2EE" secure storage (not messaging, storage). Backendal is working to formalize that problem (it wasn't already!). Fun bugs! securitycryptographywhatever.com/2025/05/19/e2e…
I'm happy to finally open-source lattirust, a library for lattice-based zero-knowledge/succinct arguments! Lattirust is somewhat like arkworks, but for lattices; and like lattigo, but for arguments. ➔ github.com/lattirust
SpongeFiSh, which superseeds Merlin, would have prevented this Solana bug! 🧽🐟 github.com/arkworks-rs/sp…
On April 16, 2025 a security vulnerability was reported to the @anza_xyz Github Security Advisory. The incident required patching the @solana validator software before the code could be released publicly. There is no known exploit of the issue. Funds are safe. Details below 👇
web.cs.ucdavis.edu/~rogaway/paper…
"Cryptography rearranges power, it configures who can do what". What motivates @GiacomoFenzi beyond his intellectual curiosity? Behind every passion lies a greater mission, a desire to shape the world as we envision it.
@benediktbuenz, Alessandro Chiesa, @GiacomoFenzi & @kleptographic present WARP, the first accumulation scheme with linear prover time and logarithmic verifier time. This scheme is hash-based, plausibly post-quantum secure, and supports unbounded accumulation depth.…