Cryptography formats Published: May 19 2026
computer security cryptography ssh jose jwt cose
If you are trying to understand the difference between the different cryptography-related formats (PKS#12, PKCS#8, PEM, X.509 certificate, DER, JWK, BEGIN ENCRYPTED PRIVATE KEY??? 🤯), you will hopefully find some useful information here (and a lot more your did not wanted to know about).
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Books I have read in 2025 Published: Jan 12 2026
book society
Books I have read in 2025. Should be mostly spoiler free.
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Asymmetric keys and Siths Published: Dec 8 2025
computer cryptography star-wars
Some (not so serious) cryptographic wisdom from a long time ago…
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Reinforcement Learning formulas cheat sheet Published: Sep 22 2025
computer machine-learning reinforcement-learning neural-networks
Cheat sheet for (some) reinforcement learning mathematical formulas and algorithms.
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Concealing XSS payloads Published: Aug 22 2025
computer security xss waf
PortSwigger “Concealing payloads in URL credentials” talks about concealing XSS payloads in URL credentials. The nice thing is that this makes the payload invisible to WAFs and other server-side XSS filters. You can actually conceal the payloads in other places
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Codingame Spring Challenge 2025 Published: Aug 22 2025
computer rust optimization profiling flamegraph
My experience from the Codingame Spring Challenge 2025 .
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computer security language-model LLM
Testing ASCII smuggling using Unicode Tags on LLMs/chatbots. Nothing new here. Just a short summary.
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Books I have read in 2024 Published: Jul 8 2025
book cryptography society
Books I have read in 2024. Tries to avoid spoiling as much as possible and therefore does not contain a very deep analysis or review of most books.
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Keycloak UMA vulnerabilities Published: Jul 8 2025
computer protocol web security oauth keycloak security uma openid-connect
Keycloak's UMA implementation seems tricky to me.
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llama.cpp quickstart Published: May 14 2025
computer machine-learning deep-learning language-model neural-networks LLM
How to quickly use llama.cpp for LLM inference (no GPU needed).
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