I saw this tweet this morning:
Use Signal for messages.— Thomas H. Ptacek (@tqbf) May 18, 2021
Use Tarsnap for backups.
Use Magic Wormhole for file transfers.
Use age for file encryption (but make sure file encryption is actually what you need). https://t.co/Ih5D5dNa6x
I've heard of the other things, but what is magic wormhole? Its a way to send files from one computer to another using a magic phrase. The idea is that you are on the phone with someone, you send them a file, say a phrase over the phone, and they use that phrase to get the files to their computer.
Let's try it. On Debian:
Sending a file
To send a file
Receiving a file
And then on the other side:
Fast and easy, at least once you have it installed!