I love duplicity, but I couldn't figure one bit out...
I have a couple of gpg public keys, and my duplicity backups are encrypted with one of them, but I worry about losing my keys and then losing my backups forever.
I would prefer to use symmetric encryption so all I need to remember is a password...
I tried a bunch of different ways but wasn't successful.
What is the magic command line to do symmetric encryption when there are existing keys in .gpg ?