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Re: [Duplicity-talk] Encrypt without the private key?


From: edgar . soldin
Subject: Re: [Duplicity-talk] Encrypt without the private key?
Date: Sat, 28 Mar 2015 16:02:10 +0100
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0

probably
 https://bugs.launchpad.net/duplicity/+bug/687295

..ede

On 28.03.2015 14:46, Norbert Kéri wrote:
> Hi,
> 
> I'm trying with 0.7.02, without any wrappers.
> 
> Just to confirm:
> 
> In the list that "gpg --list-keys" provides, the line beginning with "pub",
> is the ID of my public key, right?
> 
> On Sat, Mar 28, 2015 at 2:37 PM, Aaron Whitehouse <address@hidden>
> wrote:
> 
>>  Hi Norbert,
>>
>> I've tested this with duplicity 0.6.23 and it seems to work for me - I can
>> encrypt to a key when the machine doesn't have the secret key and it does
>> not prompt for a passphrase. Could you please try with a recent version and
>> see if the problem persists?
>>
>> I have two guesses (without looking at the code) as to why it may prompt
>> for a passphrase but continue without one:
>> 1) it is trying to sign, even though you haven't asked it to; or
>> 2) it is trying to do some kind of encryption test before starting - I
>> think that duply does this, for example.
>>
>> Kind regards,
>>
>> Aaron
>>
>>
>> On 28/03/15 12:13, Norbert Kéri wrote:
>>
>>   Hey,
>>
>>  I'm trying to set up an unattended backup to S3, with the following
>> command:
>>
>> duplicity --progress --name mystuff --full-if-older-than 6M
>> --s3-unencrypted-connection --encrypt-key A6ACD7BF ./myfolder s3://
>> s3.eu-central-1.amazonaws.com/bucket/folder
>>
>>  However, if I rerun the above command, I get:
>>
>> Local and Remote metadata are synchronized, no sync needed.
>> Last inc backup left a partial set, restarting.
>> Last full backup date: Sun Mar 22 16:54:42 2015
>>
>> Then it pops up a pinentry dialog, asking for the passphrase for my
>> private key. This surprised me, because I was expecting it to only ask for
>> a passphrase when I restore files from the backup. Even more, if I just
>> cancel the pinentry password dialog, it successfully finishes the backup,
>> so it's not even using the key?
>>
>>  So what's happening here? Does duplicity need to decrypt some parts of
>> the previous backup, is that why it's asking for a key? Why does it
>> continue if I cancel the dialog then? I was thinking maybe it's trying to
>> sign the backups, but I'm not using any of the signing switches, and it
>> doesn't do that by default?
>>
>>  I have found some references to this problem, from a few years ago:
>> http://lists.nongnu.org/archive/html/duplicity-talk/2012-07/msg00005.html
>> https://answers.launchpad.net/duplicity/+question/107216
>>
>>  Is this still a problem?
>>
>>
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>>
> 
> 
> 
> 
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