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Re: Hey guys, here is another (great?) idea

No no. I mean how routers propagate routes and know paths. Inherently,
a router does not know the entire path of the internet, however it
does know who is around, and how to get where it wants data to go.

On 11/19/05, Nick Mathewson <nickm@xxxxxxxxxxxxx> wrote:
> On Sat, Nov 19, 2005 at 12:45:48PM -0600, Arrakis Tor wrote:
>  [reformatted to fix top-post.]
> > On 11/19/05, Nick Mathewson <nickm@xxxxxxxxxxxxx> wrote:
>  [...]
> > > (Yes, we know about existing p2p models, but the problem isn't
> > > trivial.  It's easy to do bad things to anonymity by partitioning
> > > client knowledge, or worse, isolating clients in adversary-targetable
> > > zones.)
> >
> > How do routers do it with DNS tables, that we can't with Tor servers?
> DNS maps names to values, and doesn't worry about vulenrabilities
> resulting from adversary knowing which clients have learned which
> values.  That's not our problem.  Our problem is finding a way for
> clients to learn about servers and build paths through those servers
> so that if you (an adversary) see a client, and you control a
> directory cache, and you control some servers, and you see part of the
> client's path, you can't deduce with a better-than-chance probability
> whether the path was generated by the client.
> Section 5.2 http://tor.eff.org/cvs/tor/doc/design-paper/challenges.pdf
> discusses this in more detail.  I cannot possibly recommend this paper
> highly enough to people who want to help with design
> yrs,
> --
> Nick Mathewson