CTFs are dead
LLMs are killing CTFs
petal.café
Latest posts
LLMs killed my will to do stuff
How llms replaced my ability to sit with hard problems, and why it maybe matters
No Ads, No Algorithms, No Problem
Big techs hate it! This one simple trick lets you read what you want
SquarePants Sponge Hashing
A quick explanation of the sponge hashing algorithm, notably used in SHA-3
Adaptor Signatures FtW
A simple and neat way to "lock" your Schnorr signatures, enabling atomic swaps and more!
Elliptic Curves for Sane People
A gentle introduction to elliptic curve cryptography, without the need for a PhD in mathematics.
Lagrange Interpolation Primer
A quick and simple explanation on the concept of polynomial interpolation, here Lagrange's in particular.
Using ECC for (Multi-)Signatures
Math-powered methods for proving message authenticity, sounds great, doesn't it?
Shamir Secret Sharing in a Nutshell
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?
A pretty unusual way to apply for a developer job at Traefik...