[tor-bugs] #20569 [Core Tor/Tor]: hs: Use AES256 prop224 descriptors

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#20569: hs: Use AES256 prop224 descriptors
-------------------------------------------------+-------------------------
 Reporter:  dgoulet                              |          Owner:
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  High                                 |      Milestone:  Tor:
                                                 |  0.3.0.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs, easy, prop224,               |  Actual Points:
  TorCoreTeam201611                              |
Parent ID:                                       |         Points:  0.1
 Reviewer:                                       |        Sponsor:
                                                 |  SponsorR-must
-------------------------------------------------+-------------------------
Changes (by dgoulet):

 * status:  needs_revision => needs_review


Comment:

 Very good catch! Fixup commit in `bug20569_030_01`.

 Tests passes with expensive hardening as well. I'm very open to suggestion
 on how to make this bulletproof or any refactoring that could make us NOT
 make that mistake again.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20569#comment:4>
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