Implementing toy RSA in Ruby, on a dare

How to write a toy implementation of RSA cryptosystem in Ruby -- because your friends are doing it poorly.

Installing Podman on Alpine Linux

Part I of HAWA series -- how to install container engine on Alpine Linux distro with ZFS.

Project intro: Going Cloud Native for internal services

How I switched from the traditional way of running internal (web-)services to some form of on-prem "Cloud Native".

Running one's own root Certificate Authority in 2023

A tale how running your own x509 root CA -- for internal services -- changed in the last 20 years.

Upgrading grub on my alpine with secureboot setup

This quick note shows how to upgrade grub on my alpine with secureboot setup.