Re: Long-Lived Remailers

[snow <snow@smoke.suba.com>]

On Tue, 21 May 1996, Timothy C. May wrote:

> At 3:00 PM 5/21/96, Rev. Mark Grant, ULC wrote:
> >On Tue, 21 May 1996, Timothy C. May wrote:
> >> Traffic analysis will be quite easy to do, of course, as all mail sent to
> >> the persistent address comes out of the "disposable@foo.com" address.
> >> Q.E.D.
> >
> >Yeah, but the attack model I was assuming was lawyers rather than
> >intelligence agencies. The NSA could probably easily link the two
> >together, but the Church of Foobar(tm) probably couldn't. They'd only have
> >access to the logs on the ISP and the information you gave when you signed
> >up, not the raw packets on the Net.
> 
> The traffic analysis on this fixed mapping system needs no access to
> packets and is childishly simple.
> 
> Let's call the first site "Alice" and the emanation site "Bob."
> 
> That is, all messages sent to the persistent site Alice appear to come from
> the site Bob.
> 
> The Church of Clams can simply send messages addressed to themselves
> through the Alice remailer and see immediately that they appear to come
> from Bob.

	Randomize the output remailer? Sometimes Alice exits Bob,
Sometimes Charlie, sometimes Tom etc. 


Petro, Christopher C.
petro@suba.com <prefered for any non-list stuff>
snow@crash.suba.com