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

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#20569: hs: Use AES256 prop224 descriptors
-------------------------------------------------+-------------------------
 Reporter:  dgoulet                              |          Owner:  dgoulet
     Type:  defect                               |         Status:
                                                 |  accepted
 Priority:  High                                 |      Milestone:  Tor:
                                                 |  0.3.0.x-final
Component:  Core Tor/Tor                         |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tor-hs, prop224, TorCoreTeam201611,  |  Actual Points:
  review-group-12                                |
Parent ID:                                       |         Points:  0.1
 Reviewer:                                       |        Sponsor:
                                                 |  SponsorR-must
-------------------------------------------------+-------------------------

Comment (by asn):

 Replying to [comment:7 dgoulet]:
 > Replying to [comment:5 chelseakomlo]:
 >
 > Ok, I won't make any of the suggested fixes to the branch yet because
 asn raised concerns with AES-256 specifically regarding the size of the
 output and how it will influence the final size of the descriptor. Let's
 figure that one out and then fix our code.

 FWIW, after all there are no serious concerns about AES-256 and the size
 of the output, so I think it's fine to use AES-256.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20569#comment:9>
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