Developer Support

Software Licensing

software-licenses

How To’s

Create and maintain an OpenPGP key (free) — for signing emails/files/git

cryptographic-tools/gpg/commands

Create a self-signed X.509 cert and export to PFX - for testing PDF signing or internal use

cryptographic-tools/openssl/commands

Get trusted TLS certs for websites (Let’s Encrypt, free)

Install Certbot (certbot.eff.org) on your server

Run:

sudo certbot --apache (or --nginx)  - follow prompts to request and auto‑install certificates

Certbot will create certs and set up auto‑renewal (systemd timer / cron)

Maintain by testing renewal:

sudo certbot renew --dry-run

Code signing / Git signing and GitHub

git-commands/signing-commits

Use OS or free password manager to maintain passphrases and PFX backups

• Bitwarden or KeePass to store PFX passwords and recovery instructions securely
• keep one encrypted backup of any PFX or exported secret in an offline encrypted drive