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Re: New function: consttime_memcmp(3)
On Mon, Mar 16, 2015 at 01:13:26AM +0000, 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) .
> Why? What do you want to use this for?
To expand on that question: when this topic was originally discussed, no
good reason for memcmp-like ordering was found. It's not like you are
going to use sort by it or build a rbtree from it. As such, equal or not
is a much simpler interface contract.
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