What's the secret?

Jean-Rene David tahoe-dev at levelnine.net
Thu Oct 29 10:40:03 UTC 2015


Thank you Paul. That does clear it up quite
nicely.

Isn't the FURL stored on all nodes, including the
untrusted ones? In that case it doesn't make for
much of a secret.

Also, in the event that an untrusted node is
compromised, doesn't that mean the intruder can
now use our grid?

-- 
JR

* Paul Rabahy [2015.10.28 08:40]:
> There are 2 secrets.
> 
> The first is the FURL. This secret protects access to the grid. Anybody
> with the FURL can talk to the introducer and see all the nodes on the grid.
> Once they know about the nodes they will be able to upload files.
> 
> The second is your CAP(s). Each file that you upload to the grid gets a
> CAP. Anybody with the CAP will be able to verify/decrypt/modify the file on
> the grid corresponding to the CAP. The CAP has several different forms that
> allow more granular access control (Read Only vs Read/Write). Most people
> will end up saving a CAP as an Alias so that it is easier to use on their
> local machine.
> 
> Hopefully this helps clear it up.
> 
> 
> On Wed, Oct 28, 2015 at 7:48 AM, Jean-Rene David <tahoe-dev at levelnine.net>
> wrote:
> 
> > Hello,
> >
> > Say I create a grid and a client. I upload some
> > files to the grid. Now I go on another computer
> > and create another client. I use the same furl and
> > connect to the same grid. What do I have to do to
> > have access to the files I uploaded from the first
> > client?
> >
> > It seems there is something very basic about tahoe
> > that I don't get. On the one hand it seems
> > obvious that I should have access to my own files
> > no matter how I connect to the grid. On the other
> > hand I don't what anybody else to have that
> > access.
> >
> > But I didn't see any mention of an authentication
> > mechanism in the docs. What is the secret part
> > that authenticates me over anybody else on a grid?
> >
> > Thanks!
> >
> > --
> > JR
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> >

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