#32040: HS intro padding machine reactivates after receiving INTRODUCE_ACK -------------------------------------------------+------------------------- Reporter: asn | Owner: asn Type: defect | Status: | assigned Priority: Medium | Milestone: Tor: | 0.4.4.x-final Component: Core Tor/Tor | Version: Severity: Normal | Resolution: Keywords: wtf-pad, padding, circpad- | Actual Points: researchers-want, 043-deferred | Parent ID: | Points: 1 Reviewer: | Sponsor: | Sponsor2 -------------------------------------------------+-------------------------
Comment (by mikeperry): Actually, no. No protover is required. Only client upgrade is needed, so no negotiation needs to happen. The things you can do with just endpoint upgrade are pretty crazy, if you spend a second thinking about it, as opposed to trying to define tokens endlessly in a committee of dinos... We just can remove CIRCUIT_PURPOSE_C_INTRODUCE_ACKED from apply_purpose_mask and set it and CIRCUIT_PURPOSE_C_INTRODUCING in keep_purpose_mask. This is done in this commit: https://github.com/mikeperry- tor/tor/commit/2b7b8a7cfd1124ec689e26439178cc312cf5c7d3 The rend machines might need a similar fix if the REND circuit also has purpose flapping? I did not do that yet. -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32040#comment:10> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
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