[Owncloud] Client Side encryption with OwnCloud

Michael Grosser owncloud at seetheprogress.net
Sat Oct 26 09:37:20 UTC 2013

On Fri, Oct 25, 2013 at 10:44 PM, Cornelius Schumacher
<schumacher at kde.org> wrote:
> On Friday 25 October 2013 Klaas Freitag wrote:
>> On 25.10.2013 18:34, Cornelius Schumacher wrote:
>> >
>> > To me client-side encryption is the one big missing feature in ownCloud.
>> > This would enable hosting it on an server you don't control, and still
>> > have full ownership and control of your data.
>> Well, you own the data on the server, but its useless there for you.
> It's only useless for any server-side processing, and that's the whole point.
>> So
>> what is the use case of the entire ownCloud (filemanagement) then? Just
>> a hub to synchronize from one device to the other?
> Yes, accessing the data from multiple clients. And that could well be web
> clients as well. But the processing would be on the client, and not on the
> server.
Could be done via the client overlay or later on with a browserplugin,
perhaps even a browser on a usb stick with your private key so you can
launch it from a usb, when you need it and semitrust the computer...

> Sharing with others becomes tricky, because it would mean some kind of
> exchange of keys, but even that might be a solvable problem.
True, but public keys of other users could be managed by the server
and used for encrypting the shared file and reuploaded for the other
user. A bit more complicated and bandwidth/resource intensive, but as
you said solvable.
>> Actually yes, that's a feature. But I think we were hoping to make more
>> out of ownCloud. And that made the idea slipping further down the
>> priority list I think.
> More control, more privacy, more security, that's what I personally expect
> from ownCloud. For just writing fancy web applications there are many other
> projects which do a good job. Not saying that it's a bad thing to do it ;-)
>> > Is it hard to implement such a feature? Hell yes. But that's part of the
>> > fun and the value.
>> Does that mean you're in? Great! :-D
> That's a trick question, right? Let me say for now I'm in as a supporter of
> the idea ;-)
> --
> Cornelius Schumacher <schumacher at kde.org>
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