I've been using duplicity for several months to back up my mac. I recently needed to do a restore, but it looks like at some point I switched keys. Because if I use Key A, it starts to open a few volumes then complains that a volume was signed with Key B, but if I switch to Key B, it complains that the first volume was signed with Key A. The manpage indicates multiple sign keys are not allowed. Did I wreck my backup? Both GPG keys are on my keyring, just some volumes were backed up with one, some with the other. Advice? Thanks, PeterT
In my conf file, setting GPG_KEY='KEYA,KEYB' and GPG_KEY_SIGN='disabled' solved the problem. I have no idea why duply started using two different GPG keys from my ring (probably because I was still learning), but I am now deleting my entire backup and starting again (and removing all duply GPG keys and making a new one).