[or-cvs] final commit. it is submitted.
Roger Dingledine
arma at seul.org
Wed Nov 5 06:00:46 UTC 2003
Update of /home/or/cvsroot/doc
In directory moria.mit.edu:/home2/arma/work/onion/cvs/doc
Modified Files:
tor-design.tex
Log Message:
final commit. it is submitted.
Index: tor-design.tex
===================================================================
RCS file: /home/or/cvsroot/doc/tor-design.tex,v
retrieving revision 1.119
retrieving revision 1.120
diff -u -d -r1.119 -r1.120
--- tor-design.tex 5 Nov 2003 05:34:58 -0000 1.119
+++ tor-design.tex 5 Nov 2003 06:00:44 -0000 1.120
@@ -302,10 +302,9 @@
{\bf PipeNet} \cite{back01, pipenet}, another low-latency design proposed at
about the same time as Onion Routing, provided
stronger anonymity at the cost of allowing a single user to shut
-down the network simply by not sending. Low-latency anonymous
-communication has also been designed for different environments with
-different assumptions, such as
-ISDN \cite{isdn-mixes}.
+down the network simply by not sending. Systems like {\bf ISDN mixes}
+\cite{isdn-mixes} were designed for other environments with
+different assumptions.
In P2P designs like {\bf Tarzan} \cite{tarzan:ccs02} and {\bf MorphMix}
\cite{morphmix:fc04}, all participants both generate traffic and relay
@@ -1245,7 +1244,7 @@
\item Bob chooses some introduction points, and advertises them on
the DHT. He can add more later.
\item Bob builds a circuit to each of his introduction points,
- and waits. No more data is transmitted before the first request.
+ and waits for requests.
\item Alice learns about Bob's service out of band (perhaps Bob told her,
or she found it on a website). She retrieves the details of Bob's
service from the DHT.
@@ -1272,37 +1271,6 @@
\item An anonymous stream has been established, and Alice and Bob
communicate as normal.
\end{tightlist}
-
-\workingnote{
-\noindent$\bullet$ Bob chooses some introduction points, and advertises them on
- the DHT. He can add more later.\\
-$\bullet$ Bob establishes a Tor circuit to each of his introduction points,
- and waits. No data is transmitted until a request is received.\\
-$\bullet$ Alice learns about Bob's service out of band (perhaps Bob told her,
- or she found it on a website). She retrieves the details of Bob's
- service from the DHT.\\
-$\bullet$ Alice chooses an OR to serve as the rendezvous point (RP) for this
- transaction. She establishes a circuit to RP, and gives it a
- rendezvous cookie, which it will use to recognize Bob.\\
-$\bullet$ Alice opens an anonymous stream to one of Bob's introduction
- points, and gives it a message (encrypted to Bob's public key) which tells him
- about herself, her chosen RP and the rendezvous cookie, and the
- first half of an ephemeral
- key handshake. The introduction point sends the message to Bob.\\
-$\bullet$ If Bob wants to talk to Alice, he builds a new circuit to Alice's
- RP and provides the rendezvous cookie and the second half of the DH
- handshake (along with a hash of the session
- key they now share---by the same argument as in
- Section~\ref{subsubsec:constructing-a-circuit}, Alice knows she
- shares the key only with the intended Bob).\\
-$\bullet$ The RP connects Alice's circuit to Bob's. Note that RP can't
- recognize Alice, Bob, or the data they transmit.\\
-$\bullet$ Alice now sends a \emph{relay begin} cell along the circuit. It
- arrives at Bob's onion proxy. Bob's onion proxy connects to Bob's
- webserver.\\
-$\bullet$ An anonymous stream has been established, and Alice and Bob
- communicate as normal.
-}
When establishing an introduction point, Bob provides the onion router
with a public ``introduction'' key. The hash of this public key
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