There are many solutions to encrypt an external disk. Unfortunately, they require me to type my long password every time I plug the disk, which is several times per day.
My special need: I don't want to enter a password each time I connect the disk
After initial setup, I would use it this way:
- Plug the disk to my Linux via USB.
- Linux somehow recognizes the disk, gets some key stored in my Linux home, use it to mount the disk. Within a few seconds, without asking me for anything.
- I can use the disk normally.
I am on Ubuntu, if that matters. Bonus if the password can be saved to a file, so that my disk content does not become unreadable forever if my PC is stolen.