Re: [tor-bugs] #22728 [Core Tor/Tor]: Long-lived onion service circuits can enable guard discovery (was: Periodically close long-lived onion service circuits)

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#22728: Long-lived onion service circuits can enable guard discovery
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 Reporter:  mikeperry                |          Owner:  (none)
     Type:  defect                   |         Status:  new
 Priority:  Medium                   |      Milestone:  Tor: unspecified
Component:  Core Tor/Tor             |        Version:
 Severity:  Normal                   |     Resolution:
 Keywords:  guard-discovery, tor-hs  |  Actual Points:
Parent ID:                           |         Points:
 Reviewer:                           |        Sponsor:
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Comment (by mikeperry):

 Ok, I agree. It seems like simply closing circuits is not going to buy us
 much here.

 How about providing the ability for clients to migrate circuits to an
 IP/RP? That way, if a client *should* rotate away from a node, it can.
 Additionally, if a node goes down because of DoS or any byzantine reason,
 this would mean that the circuit doesn't have to be destroyed. Basically,
 we could do conflux (https://www.cypherpunks.ca/~iang/pubs/conflux-
 pets.pdf) without the split-flow control stuff (at least not at first,
 though I suspect that the flow control pieces will be useful against
 congestion attacks).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22728#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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