[tor-bugs] #31820 [Core Tor/Tor]: Drop support for OpenSSL < 1.1.1

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#31820: Drop support for OpenSSL < 1.1.1
--------------------------+------------------------------------
 Reporter:  nickm         |          Owner:  nickm
     Type:  task          |         Status:  needs_review
 Priority:  Medium        |      Milestone:  Tor: 0.4.3.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:                |  Actual Points:
Parent ID:                |         Points:  .2
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------
Changes (by nickm):

 * status:  accepted => needs_review
 * points:   => .2


Comment:

 Branch is `ticket31820` with PR at
 https://github.com/torproject/tor/pull/1556 .

 {{{
  17 files changed, 58 insertions(+), 801 deletions(-)
 }}}

 I tested with OpenSSL, LibreSSL, and NSS.

 I didn't remove the OPENSSL_OPAQUE unit tests with this patch, since I
 want to look at them more closely and see if any can be saved.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31820#comment:3>
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