blog.cstef.dev

Sometimes, I like to share my thoughts, notes, ideas or projects on this blog. Maybe you'll find something useful here!

Latest posts

• No Ads, No Algorithms, No Problem

  2025-03-21

  rss

  Big techs hate it! This one simple trick lets you read what you want

• SquarePants Sponge Hashing

  2025-01-06

  crypto

  A quick explanation of the sponge hashing algorithm, notably used in SHA-3

• Adaptor Signatures FtW

  2024-12-03

  crypto

  A simple and neat way to "lock" your Schnorr signatures, enabling atomic swaps and more!

• Elliptic Curves for Sane People

  2024-11-29

  crypto

  A gentle introduction to elliptic curve cryptography, without the need for a PhD in mathematics.

• Lagrange Interpolation Primer

  2024-11-29

  maths

  A quick and simple explanation on the concept of polynomial interpolation, here Lagrange's in particular.

• Using ECC for (Multi-)Signatures

  2024-11-29

  crypto

  Math-powered methods for proving message authenticity, sounds great, doesn't it?

• Shamir Secret Sharing in a Nutshell

  2024-11-29

  crypto

  How to split a secret among multiple persons, so that only any subset of n people can recover it ?

• Oh, so you want to work at Traefik?

  2024-11-12

  ctf

  A pretty unusual way to apply for a developer job at Traefik...

Corrections

Look, I try my best, but mistakes happen. If you find one, let me know so I can pretend it never happened (and actually fix it).

Hit me up at hi@cstef.dev or open an issue on the GitHub repo.