[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3914: Loading a huge RSA key is _extremely_ slow on Ubuntu 22.04

[Tahoe-LAFS]

#3914: Loading a huge RSA key is _extremely_ slow on Ubuntu 22.04
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     Reporter:  itamarst  |      Owner:
         Type:  defect    |     Status:  new
     Priority:  normal    |  Milestone:  undecided
    Component:  unknown   |    Version:  n/a
   Resolution:            |   Keywords:
Launchpad Bug:            |
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Comment (by exarkun):

 This is a known slowdown.  OpenSSL 3 introduces some "primality" tests.
 It is possible to disable these (pass
 `unsafe_skip_rsa_key_validation=True` to the above API).  As the parameter
 name suggests, this option is "unsafe" (in the sense that setting it and
 also taking untrusted key material exposes you to unspecified behavior
 from OpenSSL).

 The *test suite* is not exposed to untrusted key material so it would
 probably be fine to set the option there (and reclaim about 4 minutes from
 each test run).  However, I'm not entirely confident that we can say the
 same thing about all production uses of the function.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3914#comment:5>
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