[tor-bugs] #17815 [Tor]: [PATCH] eliminate modulo bias in OpenBSD's hardened malloc
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Fri Dec 11 06:57:01 UTC 2015
#17815: [PATCH] eliminate modulo bias in OpenBSD's hardened malloc
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Reporter: logan | Owner:
Type: enhancement | Status: new
Priority: Medium | Milestone:
Component: Tor | Version:
Severity: Normal | Keywords:
Actual Points: | Parent ID:
Points: | Sponsor:
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Currently, there is a modulo bias introduced by using:
i = rand() % bp->free;
Is there a reason not to import arc4random_uniform() which takes care of
modulo bias ?
In the mean time, attached is a small patch that reduces the modulo bias.
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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17815>
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