[tor-bugs] #19979 [Core Tor/Tor]: Use OpenSSL 1.1.0 HKDF in Tor when available.

[Tor Bug Tracker & Wiki]

#19979: Use OpenSSL 1.1.0 HKDF in Tor when available.
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     Reporter:  nickm         |      Owner:
         Type:  enhancement   |     Status:  new
     Priority:  Medium        |  Milestone:  Tor: 0.2.???
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  openssl110 easy
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
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 OpenSSL 1.1.0 now includes HKDF support. We should consider using their
 implementation instead of ours when it's available.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/19979>
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