[tor-bugs] #17944 [- Select a component]: [PATCH] support timingsafe_memcmp() on Operating Systems that support it

Mon Dec 28 19:37:14 UTC 2015

#17944: [PATCH] support timingsafe_memcmp() on Operating Systems that support it
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     Reporter:  logan                 |      Owner:
         Type:  enhancement           |     Status:  new
     Priority:  Medium                |  Milestone:
    Component:  - Select a component  |    Version:
     Severity:  Normal                |   Keywords:
Actual Points:                        |  Parent ID:
       Points:                        |    Sponsor:
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 Hi guys,

 Tor has its own hand-rolled timing-safe memcmp() which is nice, but
 Operating Systems like OpenBSD, NetBSD, and possibly others soon are
 starting to ship with a timing safe memcmp().

 On OpenBSD, it's called timingsafe_memcmp().

 Below is a patch that checks for it, and uses it if the host platform has
 a timingsafe_memcmp().

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17944>
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