Re: New function: consttime_memcmp(3)

["Kamil Rytarowski" <n54%gmx.com@localhost>]

Me wrote:
> Taylor R Campbell wrote:
> >
> >    Date: Mon, 16 Mar 2015 01:58:19 +0100
> >    From: "Kamil Rytarowski" <n54%gmx.com@localhost>
> > 
> >    I'm attaching a patch against current adding a new libc and
> >    kernel function: consttime_memcmp(3). The code is borrowed
> >    from OpenBSD timingsafe_memcmp(3) [1].
> > 
> > Why?  What do you want to use this for?
> > 
> 
> My personal use-case is playing with the code from src/lib/libssl (applies for LibreSSL), which comes from OpenBSD.
[..]
> Instead of having a local copy or redesigning the code flow, I'm proposing the function to add to the base.
> 

I've just checked the sources and replacing the algorithms with consttime_memequal(3) will easier then I thought.

Are you OK to add it, along with timingsafe_bcmp, to the _OPENBSD_SOURCE namespace under the original name?

I'm a benevolent maintainer of _OPENBSD_SOURCE.