[tor-bugs] #29536 [Core Tor/Tor]: prng: Add a global fast PRNG object

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#29536: prng: Add a global fast PRNG object
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     Reporter:  dgoulet       |      Owner:  nickm
         Type:  enhancement   |     Status:  assigned
     Priority:  Medium        |  Milestone:  Tor: 0.4.1.x-final
    Component:  Core Tor/Tor  |    Version:
     Severity:  Normal        |   Keywords:  tor-relay, prng, prop289
Actual Points:                |  Parent ID:  #26288
       Points:  0.1           |   Reviewer:  dgoulet
      Sponsor:  SponsorV      |
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 prop289 needs to have a fast PRNG allocated early in order to avoid
 creating a fast prng object every time we want to add random to a cell.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29536>
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