From: Herbert Xu <herbert@gondor.apana.org.au>
To: Eric Biggers <ebiggers@kernel.org>
Cc: Arvind Sankar <nivedita@alum.mit.edu>,
"David S. Miller" <davem@davemloft.net>,
"linux-crypto@vger.kernel.org" <linux-crypto@vger.kernel.org>,
David Laight <David.Laight@aculab.com>,
linux-kernel@vger.kernel.org,
Sami Tolvanen <samitolvanen@google.com>
Subject: Re: [PATCH v2 1/6] crypto: Use memzero_explicit() for clearing state
Date: Thu, 29 Oct 2020 18:00:05 +1100 [thread overview]
Message-ID: <20201029070005.GA20177@gondor.apana.org.au> (raw)
In-Reply-To: <20201023215329.GA180517@gmail.com>
On Fri, Oct 23, 2020 at 02:53:29PM -0700, Eric Biggers wrote:
>
> It's doubtful that anyone will do a global conversion from memset() to
> memzero_explicit(), as it's too hard to find all the places that should be
> converted. They are in lots of different subsystems; the crypto subsystem will
> have the most, but not all. We just need to fix as many as we can. If you'd
> like to do something more comprehensive than this patch, that would be great,
> but I hope we don't wait forever for a global conversion that never happens.
I had thought that there were more instances of memset in crypto/
that needed converting, but a quick grep seems to indicate that most
are not sensitive. So I'm OK with this patch.
Thanks,
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
next prev parent reply other threads:[~2020-10-29 9:14 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-20 20:39 [PATCH v2 0/6] crypto: lib/sha256 - cleanup/optimization Arvind Sankar
2020-10-20 20:39 ` [PATCH v2 1/6] crypto: Use memzero_explicit() for clearing state Arvind Sankar
2020-10-22 4:36 ` Eric Biggers
2020-10-23 15:39 ` Arvind Sankar
2020-10-23 15:56 ` Eric Biggers
2020-10-23 20:45 ` Herbert Xu
2020-10-23 21:53 ` Eric Biggers
2020-10-29 7:00 ` Herbert Xu [this message]
2020-10-20 20:39 ` [PATCH v2 2/6] crypto: lib/sha256 - Don't clear temporary variables Arvind Sankar
2020-10-22 4:58 ` Eric Biggers
2020-10-23 3:17 ` Arvind Sankar
2020-10-20 20:39 ` [PATCH v2 3/6] crypto: lib/sha256 - Clear W[] in sha256_update() instead of sha256_transform() Arvind Sankar
2020-10-22 4:59 ` Eric Biggers
2020-10-20 20:39 ` [PATCH v2 4/6] crypto: lib/sha256 - Unroll SHA256 loop 8 times intead of 64 Arvind Sankar
2020-10-22 5:02 ` Eric Biggers
2020-10-23 3:12 ` Arvind Sankar
2020-10-23 3:16 ` Herbert Xu
2020-10-20 20:39 ` [PATCH v2 5/6] crypto: lib/sha256 - Unroll LOAD and BLEND loops Arvind Sankar
2020-10-22 5:02 ` Eric Biggers
2020-10-20 20:39 ` [PATCH v2 6/6] crypto: lib/sha - Combine round constants and message schedule Arvind Sankar
2020-10-20 21:36 ` David Laight
2020-10-21 15:16 ` Arvind Sankar
2020-10-22 4:34 ` Eric Biggers
2020-10-22 8:20 ` David Laight
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