[tor-bugs] #13538 [Tor]: Stop signed left shift overflows in curve25519-donna (non-64-bit)

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#13538: Stop signed left shift overflows in curve25519-donna (non-64-bit)
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     Reporter:  teor    |      Owner:
         Type:  defect  |     Status:  needs_review
     Priority:  normal  |  Milestone:  Tor: 0.2.6.x-final
    Component:  Tor     |    Version:  Tor: unspecified
   Resolution:          |   Keywords:  tor-router integer-safety
Actual Points:          |  Parent ID:
       Points:          |
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Comment (by nickm):

 Looks plausible to me, though I need to stare at the perl a little longer.
 Please add a link here when you've posted this upstream to agl's
 repository?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13538#comment:5>
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