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Date: Tue, 1 Jan 2019 11:49:02 -0500
From: Jeffrey Walton <noloader@...il.com>
To: Torbjörn Granlund <tg@...lib.org>
Cc: Niels Möller <nisse@...ator.liu.se>,
oss-security@...ts.openwall.com, gmp-bugs@...lib.org
Subject: Re: Asserts considered harmful (or GMP spills its sensitive information)
On Tue, Jan 1, 2019 at 11:45 AM Jeffrey Walton <noloader@...il.com> wrote:
>
> On Tue, Jan 1, 2019 at 11:19 AM Torbjörn Granlund <tg@...lib.org> wrote:
> >
> > The assert that Jeffrey has hit is in sec_powm.c,
> >
> > ASSERT_ALWAYS (enb >= windowsize);
> >
> > As far as I can see, "enb" is the input argument to the win_size function,
> > and "windowsize" is the return value. I'm waiting for more information,
> > since it works fine in my build. Possible explanations I see are
> >
> > A reasonable assumption is that this user has modified the sources to
> > cause this bug. The motive would be to support his auxesis about how
> > insecure GMP is.
>
> My bad, I did not mean to imply this was a problem with GMP only. GMP
> has a lot of company, like GnuPG and OpenSSL.
s/OpenSSL/libsodium/
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