david wong

Hey! I'm David, the author of the Real-World Cryptography book. I'm a crypto engineer at O(1) Labs on the Mina cryptocurrency, previously 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.

The intuition behind the sum-check protocol in 5 minutes posted 4 weeks ago

The sum check protocol allows a prover to convince a verifier that the sum of a multivariate polynomial is equal to some known value. It’s an interactive protocol used in a lot of zero-knowledge protocols. I assume that you know the Schwartz Zippel lemma in this video, and only give you intuitions about how the protocol works.

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