[tor-bugs] #13696 [Tor]: Use syscall-based entropy reading where possible.

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#13696: Use syscall-based entropy reading where possible.
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 Reporter:  nickm        |          Owner:  yawning
     Type:  enhancement  |         Status:  needs_revision
 Priority:  Medium       |      Milestone:  Tor: 0.2.???
Component:  Tor          |        Version:
 Severity:  Normal       |     Resolution:
 Keywords:  tor-relay    |  Actual Points:
Parent ID:               |         Points:
  Sponsor:               |
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Comment (by yawning):

 Replying to [comment:8 nickm]:
 > On top of Yawning's branch would be fine.
 >
 > Another thought: we really don't need this code to be fast.  Maybe
 instead of trying syscall, and then device if syscall fails, we should try
 both and hash them together?

 I'd personally vote for "do that when we pull in the SHA-3 XOFs" so we can
 support larger requests, though we only currently call this requesting 32
 bytes of output.  I'll change it if you think it should happen now.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/13696#comment:10>
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