Encryption

Emacs has support for creating and editing encrypted gpg files, and Org-roam need not provide additional tooling. To create encrypted files, simply add the .gpg extension in your Org-roam capture templates. For example:

(setq org-roam-capture-templates '(("d" "default" plain "%?"
     :target (file+head "${slug}.org.gpg"
                        "#+title: ${title}\n")
     :unnarrowed t)))

Note that the Org-roam database stores metadata information in plain-text (headline text, for example), so if this information is private to you then you should also ensure the database is encrypted.