OpenSSL
Advanced PKI Certificate Management for Enterprise Infrastructure: Complete Implementation Guide
18 min readPublic Key Infrastructure (PKI) forms the backbone of modern enterprise security, enabling secure communications, authentication, and data integrity across distributed systems. …
Advanced Linux Security and Cryptography Programming: Building Secure Systems and Encryption Frameworks
25 min readAdvanced Linux security programming requires comprehensive understanding of cryptographic principles, secure coding practices, and system-level security mechanisms. This guide …
Add a CA Certificate to Ubuntu: update-ca-certificates
6 min readTo trust a private or self-signed certificate authority on Ubuntu, put the CA certificate in /usr/local/share/ca-certificates/ with a .crt extension and run sudo …
How to generate expired SSL certificates using OpenSSL and Faketime
2 min readWhile playing with SSL certificates and Kubernetes, I wanted to see how Kubernetes respond when its certificates have expired. Since Rancher/RKE uses self-signed certificates, I …
How to become a local CA, and sign your own SSL certificates
2 min readSometimes when you experiment with some apps and VMs (like hosting gitlab on a local server or running a Rancher lab cluster) you might want to setup SSL for the app to work, to …