[tor-bugs] #11750 [Tor]: Use siphash on chan_circid_entry_hash()

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#11750: Use siphash on chan_circid_entry_hash()
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     Reporter:  nickm   |      Owner:
         Type:  defect  |     Status:  needs_review
     Priority:  normal  |  Milestone:  Tor: 0.2.5.x-final
    Component:  Tor     |    Version:
   Resolution:          |   Keywords:  tor-relay dos security
Actual Points:          |  Parent ID:
       Points:          |
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Comment (by nickm):

 I improved the implementation a little by making sure the whole input
 would fit into a single csiphash round.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/11750#comment:2>
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