There are many tools available for the Linux user to encrypt a file: Encrypting/Decrypting a single file in Ubuntu 12.04 LTS.
I want to…
- encrypt a single PDF on my Linux OS,
- email it to a non-technical user on a Mac and
- expect they can easily decrypt the PDF(using a password I provide through "another channel".
Ideally, the non-technical recipient is not required to install additional software. Preferred (fool-proof) solutions involve native-to-macOS (built-in) capabilities or, perhaps, double-clicking a password-protected "self-extracting" file ... minimal experience or thinking needed.
My knowledge of macOS is thin. Suggestions?
( Side question - first post from a no-longer-virgin Stack Exchange user.
Should this have instead gone to https://unix.stackexchange.com/ ?)