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Subject: Re: Understanding CircID From: Sam Peterson <[email protected]> To: [email protected] I'm not an expert (please someone correct me if any of the below is wrong), but from how I have read the design paper for TOR and the terminology used regarding CircID is that it's an identifier used on each side of a link between two onion routers and is only known by the two onion routers on that link. For example, a client has created a circuit (client -> A -> B -> C). The client and A have a unique CircID (we'll call it client2A). A and B have a unique CircID we'll call A2B. The same principle applies to the link between B and C. Now, A knows that client2A and A2B are part of the same logical circuit. However, A doesn't know or care what the CircID between B and C is. It simply knows that if it receives a cell on client2A it should decrypt its layer of encryption on the cell and forward the rest of the cell out on A2B. The "table" you mention is just an internal data structure of the Tor program. Above, A keeps its own table in memory which knows that client2A and A2B are part of the same logical circuit. Once the circuit is torn down, that information is gone. On Thu, Jan 7, 2010 at 2:01 PM, moris blues <[email protected]> wrote: > hi, > > When Aubau a connection is checked whether the path already exists. The C= irID is > compared, but with whom the CircID is compared, there is a table of who a= nd how > is it stored? > Where is the table? On the Directory servers? > > regards > ---- > versendet mit www.oleco.de Mail - Anmeldung und Nutzung kostenlos! > Oleco www.netlcr.org - jetzt auch mit Spamschutz. > *********************************************************************** > To unsubscribe, send an e-mail to [email protected] with > unsubscribe or-talk =A0 =A0in the body. http://archives.seul.org/or/talk/ > --=20 Sam Peterson [email protected] [email protected] ----- End forwarded message ----- *********************************************************************** To unsubscribe, send an e-mail to [email protected] with unsubscribe or-talk in the body. http://archives.seul.org/or/talk/
