[tor-bugs] #25381 [Core Tor/Tor]: Add crypto_rand_double_sign() in C and Rust

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#25381: Add crypto_rand_double_sign() in C and Rust
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 Reporter:  teor                  |          Owner:  teor
     Type:  enhancement           |         Status:  assigned
 Priority:  Medium                |      Milestone:  Tor: 0.3.4.x-final
Component:  Core Tor/Tor          |        Version:
 Severity:  Normal                |     Resolution:
 Keywords:  tor-relay, privcount  |  Actual Points:
Parent ID:  #23061                |         Points:  2
 Reviewer:                        |        Sponsor:  SponsorQ
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Comment (by teor):

 See my branch rust-rand-f64-v2 on https://github.com/teor2345/tor.git

 I need help getting the module doc tests to run.
 It seems like trivial changes can activate or deactivate doc tests.

 I wanted to put crypto_rand_f64/crypto_rand_distribution.rs in
 test/distribution/mod.rs, but I couldn't get its doc tests to run.

 Once I've sorted out these issues, I'll be ready to put the branch on
 oniongit for a real review.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25381#comment:1>
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