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[tor-bugs] #26627 [Core Tor/Tor]: HSv3 throws many "Tried connecting to router at [IP:port], but RSA identity key was not as expected"

#26627: HSv3 throws many "Tried connecting to router at [IP:port], but RSA identity
key was not as expected"
------------------------------+------------------------------
     Reporter:  asn           |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  tor-hs
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+------------------------------
 A popular-ish HSv3 operator contacted me and told me that they've been
 getting lots of warnings on their logs:

 {{{
 [warn] Tried connecting to router at [IP:port], but RSA identity key was
 not as expected: wanted [hex string] + [base64 string] but got [same hex
 string] + no ed25519 key.
 }}}

 They are afraid it's some sort of downgrade attack. We should look into
 this.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26627>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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