david wong

Hey! I'm David, cofounder of zkSecurity and the author of the Real-World Cryptography book. I was previously a crypto architect at O(1) Labs (working on the Mina cryptocurrency), before that I was the security lead for Diem (formerly Libra) at Novi (Facebook), and a security consultant for the Cryptography Services of NCC Group. This is my blog about cryptography and security and other related topics that I find interesting.

A new series of videos on zero-knowledge proof composition and recursion (part 1) posted February 2023

I introduced Plonk in a series of 12 videos here. That was almost a year and half ago! So I'm back with more :)

In this new series of videos I will explain how proof composition and recursion work with different schemes. Spoiler: we'll talk about Sangria, Nova, PCD, IVC, BCTV14 and Halo (and perhaps more if more comes up as I record these).

Here's the first one:

you can access the full playlist here.

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