Resource Notes: GPG, commit signing and more

Below are a few resources I need to explore later around using GPG, YubiKeys, Git commit signing, amongst other things:

Note: spent half an hour trying to figure out why I couldn’t sign a commit, even though encrypting some text worked (i.e. GPG itself was working) - it was because there was a typo in my git config for my name; all identifiers (username + email) must match exactly for signing to work.