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Date: Sat, 10 Jun 2017 15:49:28 +0200
From: Marcel Holtmann <marcel@...tmann.org>
To: "Jason A. Donenfeld" <Jason@...c4.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
kernel-hardening@...ts.openwall.com,
"Gustavo F. Padovan" <gustavo@...ovan.org>,
Johan Hedberg <johan.hedberg@...il.com>,
linux-bluetooth@...r.kernel.org,
stable@...r.kernel.org
Subject: Re: [PATCH 5/6] bluetooth/smp: use constant time memory comparison
for secret values
Hi Jason,
> This file is filled with complex cryptography. Thus, the comparisons of
> MACs and secret keys and curve points and so forth should not add timing
> attacks, which could either result in a direct forgery, or, given the
> complexity, some other type of attack.
>
> Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
> Cc: Marcel Holtmann <marcel@...tmann.org>
> Cc: Gustavo Padovan <gustavo@...ovan.org>
> Cc: Johan Hedberg <johan.hedberg@...il.com>
> Cc: linux-bluetooth@...r.kernel.org
> Cc: stable@...r.kernel.org
> ---
> net/bluetooth/smp.c | 39 ++++++++++++++++++++-------------------
> 1 file changed, 20 insertions(+), 19 deletions(-)
patch has been applied to bluetooth-next tree.
Regards
Marcel
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