David Wong

cryptologie.net

cryptography, security, and random thoughts

Hey! I'm David, cofounder of zkSecurity, research advisor at Archetype, and author of the Real-World Cryptography book. I was previously a cryptography architect of Mina at O(1) Labs, the security lead for Libra/Diem at Facebook, and a security engineer at the Cryptography Services of NCC Group. Welcome to my blog about cryptography, security, and other related topics.

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First zksecurity public report is out!

blog

My first public report (since I left NCC Group) is out. It was work I did for zksecurity, auditing the Penumbra circuits. You can read it here: https://penumbra.zone/blog/2023-audits

It should be quite interesting to read as we found double spending and double voting issues. It’s also nice because there are two reports in the post, one from us (zksecurity) and one from my previous team over at NCC Group =)

suggested reads:
→ Public Audits • blog
→ zksecurity.xyz • blog
→ Some news from founding a startup (zkSecurity) • blog
← back to all posts blog • 2023-08-22
currently reading:
First zksecurity public report is out!
08-22 blog
recent posts:
New cryptologie.net
07-20 blog
Weaponizing AI Assistants: With Their Permission
07-20 blog
What are Schwartz-Zippel circuits? How do they relate to iterative constraint systems?
05-29 blog
Short Note On Montgomery Reduction: Why Operating Modulo b?
05-24 blog
Still confused by Plonk's permutation?
03-13 blog
📖 my book
Real-World Cryptography is available from Manning Publications.
A practical guide to applied cryptography for developers and security professionals.
🎙️ my podcast
Two And A Half Coins on Spotify.
Discussing cryptocurrencies, databases, banking, and distributed systems.
📺 my youtube
Cryptography videos on YouTube.
Video explanations of cryptographic concepts and security topics.