Ubuntu One needs cloud encryption like LastPass does it

Dustin Kirkland kirkland at ubuntu.com
Fri Mar 23 05:35:12 UTC 2012

On Thu, Mar 22, 2012 at 6:38 PM, Martin Pool <mbp at canonical.com> wrote:
>> ...but then you wouldn't be able to interact with your data beyond
>> your own computers.
>> Ubuntu One's focus is to make it more convenient, access your files
>> from anywhere (including the website), stream your own music, share
>> your files, and well, more to come in that direction.
> For photos, being able to share them online is highly useful; for financial
> documents I don't want to share them and there is no useful web view, and I
> care much more about keeping them confidential.
> It would be nice if I could use just one tool/service and choose on a
> per-folder basis whether to encrypt the files.  (Of course I realize options
> have a cost, in development time, complexity, ui, bugs...)
> I guess you can stack ecryptfs on top of u1.

Actually, you cannot...

eCryptfs, itself, is a stacked filesystem, and it does not stack well
on top of other stacked filesystems (NFS, Samba, AUFS, etc).  Tyler
(on CC) can provide more details, if you're interested.

What you can do, however, is use eCryptfs to encrypt all of $HOME or
just $HOME/Private (where you might choose to store your financial
documents but not your photos), and then have U1 sync your underlying
encrypted data, which is symlinked into $HOME/.Private/.

I've heard from several people using U1 in this manner, though I
haven't myself.  It's been a really long time since I tried U1 (sadly,
it didn't sync/preserve symlinks last time I played with it and I
think my bug on it was marked won't-fix).


Dustin Kirkland
Ubuntu Core Developer

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