[tor-bugs] #31787 [Core Tor/Tor]: Full HMM support for circuit padding state transition
Tor Bug Tracker & Wiki
blackhole at torproject.org
Wed Sep 18 17:49:44 UTC 2019
#31787: Full HMM support for circuit padding state transition
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Reporter: | Owner: (none)
mikeperry |
Type: | Status: new
enhancement |
Priority: Medium | Milestone:
Component: Core | Version:
Tor/Tor | Keywords: circpad-researchers-maybe-want,
Severity: Normal | wtf-pad
Actual Points: | Parent ID:
Points: | Reviewer:
Sponsor: |
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The circuit padding state transition system is quasi-deterministic. A non-
deterministic state machine can be built from this using many states
through clever use of the infinity bin, but this will lead to excessively
complicated machines.
One can imagine a non-deterministic state machine/HMM that simulates an
entire web browsing session on a circuit. If this kind of machine seems
useful, it may be better simply to transform the
circpad_state_t.next_state transition field into an array of structs that
specifies the next state as well as a probability for transitioning to
that state for that event.
We would accept patches for this modification if it seems useful.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31787>
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