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Re: [tor-bugs] #23061 [Core Tor/Tor]: crypto_rand_double() should produce all possible outputs on platforms with 32-bit int
#23061: crypto_rand_double() should produce all possible outputs on platforms with
32-bit int
-------------------------------------------------+-------------------------
Reporter: teor | Owner: nickm
Type: defect | Status:
| needs_revision
Priority: Medium | Milestone: Tor:
| 0.3.3.x-final
Component: Core Tor/Tor | Version: Tor:
| 0.2.2.14-alpha
Severity: Normal | Resolution:
Keywords: tor-relay, security-low, privcount, | Actual Points: 0.5
031-backport, 030-backport, 029-backport, 028 |
-backport-maybe, 026-backport-maybe, review- |
group-22 |
Parent ID: #23126 | Points: 0.1
Reviewer: | Sponsor:
| SponsorQ
-------------------------------------------------+-------------------------
Comment (by catalyst):
Section 5.2 of
https://pdfs.semanticscholar.org/2f2b/7a0d5000a31f7f0713a3d20919f9703c9876.pdf
describes one way to sample uniformly from all the representable floating
point numbers in [0, 1). It's not clear to me whether including the
numbers with ULPs less than 2^-53^ is required for the success of the
snapping mitigation described in that paper.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23061#comment:45>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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