Re: [Duplicity-talk] Why is duplicity asking for decryption passphrase on --encrypt-sign-key?

[Michael Gardner]

As mentioned earlier in the thread, the problem is that duplicity always 
prompts for a passphrase even when doing incremental backups with a 
valid local manifest. This makes running duplicity as a cron job very 
awkward. I was hoping there was a way to force duplicity not to ask for 
a passphrase, and instead die with an error if the private key would be 
required.

On 10/26/2017 02:16 PM, Scott Hannahs via Duplicity-talk wrote:
> No there is no need to store a passphrase on the disk.  Make a key specifically 
> for encrypting  duplicity backups.  Then the public key can be used for 
> encrypting the backups without need of a passphrase.  Unless the local manifest 
> gets corrupted and a new manifest has to be downloaded and decrypted you should 
> not need the private key for backups either incremental or full.
> > On Oct 26, 2017, at 3:30 PM, Michael Gardner via Duplicity-talk 
> > <address@hidden> wrote:
> >
> > Any ideas? Does everyone who runs duplicity incr as a cron job just store the 
> > passphrase on disk?
> >
> > On 10/03/2017 03:11 PM, Michael Gardner wrote:
> > > On Aug 1, 2017, at 11:17, edgar . soldin wrote:
> > > > when you are doing an incremental, there is a chance that decryption is needed
> > > > (updating the archive dir cache, resuming ...) so it will ask for the
> > > > passphrase.
> > > I'm running duplicity incr as a cron job, and don't want to store the encryption 
> > > passphrase. I can set a bogus value for PASSPHRASE, but then duplicity spits out an error 
> > > message which triggers a cron mail, flooding my mailbox and obscuring real errors. Is 
> > > there a way to make duplicity not prompt for a passphrase, and instead fail with an error 
> > > message if it runs into a situation that would require one? Failing that, can I somehow 
> > > suppress the "GPG Failed" error message without tossing everything from stderr 
> > > into /dev/null?
> >
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