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[ardabro <question658091@xxxxxxxxxxxxxxxxxxxxx>]

Question #658091 on Duplicity changed:
https://answers.launchpad.net/duplicity/+question/658091

    Status: Answered => Open

ardabro is still having a problem:
> as i said. encryption passphrase during backup (p1-4) is always requested but only _needed_ when the backup 
> resumes or the archive needs to be synced, because only in these cases decryption is needed during backup.

>> Does it mean, that duplicity will ask me for this "unnecessary"
password when I resume interrupted process?

> no, it will ask you for the proper passphrase or it won't proceed, because the old encryption does not match 
> the new encryption.

Sorry, but I't seems to be false.
I started backup. Gave encryption password=="12345". I iterrupted the process after 2nd volume.
Then I restarted with exactly the same commandline. It realized that the process was interrupted.
It asked for encruption password and I gave "qwerty" this time. Everything went perfectly OK.

A piece of log from 2nd run:
Local and Remote metadata are synchronized, no sync needed.
Last full backup left a partial set, restarting.
Last full backup date: Wed Sep 20 22:01:48 2017
GnuPG passphrase for decryption: 
GnuPG passphrase for signing key: 
RESTART: Volumes 2 to 2 failed to upload before termination.
         Restarting backup at volume 2.
Restarting after volume 1, file debian9.iso, block 1595
...

I still don't know when this password is necessary, why it asks only
once (what if I make a typo?) and why it needs to verify anything with
additional password when I order it to enrypt with my gpg key.

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