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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Fast Fourier Transform

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So, I’ve learned about Fourier every year in my bachelor of Mathematics and I’m learning about the efficient algorithm dealing with the Fourier Transform in my class of Algebra right now.

I found a really nice video explaining really quick what it is, concretely.

Here’s wikipedia way of showing that fourier made by LucasVB, this crazy guy doing all those math gifs you’ve probably seen before :) more here

There’s also a visualization in d3.js here: http://bl.ocks.org/jinroh/7524988

suggested reads:
→ An awesome explanation of the Fourier Transform • blog
→ Pretty diagrams with Tikz in LaTeX • blog
→ An introduction to multi-party computation (videos) • blog
← back to all posts blog • 2014-04-09
currently reading:
Fast Fourier Transform
04-09 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.