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Re: [Duplicity-talk] symmetric key, or public gpg key?
From: |
Kenneth Loafman |
Subject: |
Re: [Duplicity-talk] symmetric key, or public gpg key? |
Date: |
Wed, 21 Oct 2009 07:40:10 -0500 |
User-agent: |
Thunderbird 2.0.0.23 (X11/20090817) |
Paul Harris wrote:
>
>
> 2009/10/20 Gregory Maxwell <address@hidden <mailto:address@hidden>>
>
> On Mon, Oct 19, 2009 at 8:47 AM, Chris Poole <address@hidden
> <mailto:address@hidden>> wrote:
> > Hi,
> > I had planned to just use my gpg key for encryption.
> > Now I'm wondering, will performance be better with a symmetric key?
> > Even when I use my public key, it still asks for me a passphrase
> anyway.
>
> With GPG a symmetric key is always used for encryption, but in public
> key mode the symmetric key is random and is stored using the public
> key.
>
> Because the key should be very small compared to your data the
> performance difference should not normally be measurable.
>
> The advantage of public keyed backups is immense: it means your backup
> process can run without any knowledge of the key, the key is only
> needed for recovery.
>
>
> Really? I thought duplicity still needed to decrypt the signature files
> during backups, and therefore need the key + passphrase?
With the newest duplicity, the cache (archive) dir is permanent so you
don't need a passphrase. The local sig files are unencrypted.
...Ken
signature.asc
Description: OpenPGP digital signature
- Re: [Duplicity-talk] symmetric key, or public gpg key?, (continued)
- Re: [Duplicity-talk] symmetric key, or public gpg key?, Kenneth Loafman, 2009/10/19
- Re: [Duplicity-talk] symmetric key, or public gpg key?, Chris Poole, 2009/10/19
- Re: [Duplicity-talk] symmetric key, or public gpg key?, Kenneth Loafman, 2009/10/19
- Re: [Duplicity-talk] symmetric key, or public gpg key?, Kenneth Loafman, 2009/10/19
- Re: [Duplicity-talk] symmetric key, or public gpg key?, edgar . soldin, 2009/10/19
- Re: [Duplicity-talk] symmetric key, or public gpg key?, Michael Terry, 2009/10/19
- Re: [Duplicity-talk] symmetric key, or public gpg key?, Chris Poole, 2009/10/20
Re: [Duplicity-talk] symmetric key, or public gpg key?, Chris Poole, 2009/10/20
Re: [Duplicity-talk] symmetric key, or public gpg key?, Gregory Maxwell, 2009/10/19