From: Kalle Valo <kvalo@codeaurora.org>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: linux-kernel@vger.kernel.org,
kernel-hardening@lists.openwall.com,
Anna Schumaker <anna.schumaker@netapp.com>,
David Howells <dhowells@redhat.com>,
David Safford <safford@us.ibm.com>,
"David S. Miller" <davem@davemloft.net>,
Gilad Ben-Yossef <gilad@benyossef.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Gustavo Padovan <gustavo@padovan.org>,
"J. Bruce Fields" <bfields@fieldses.org>,
Jeff Layton <jlayton@poochiereds.net>,
Johan Hedberg <johan.hedberg@gmail.com>,
Johannes Berg <johannes@sipsolutions.net>,
Marcel Holtmann <marcel@holtmann.org>,
Mimi Zohar <zohar@linux.vnet.ibm.com>,
Trond Myklebust <trond.myklebust@primarydata.com>,
keyrings@vger.kernel.org, linux-bluetooth@vger.kernel.org,
linux-nfs@vger.kernel.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH 0/6] Constant Time Memory Comparisons Are Important
Date: Sun, 11 Jun 2017 11:13:01 +0300 [thread overview]
Message-ID: <878tkzq6wi.fsf@purkki.adurom.net> (raw)
In-Reply-To: <20170610025912.6499-1-Jason@zx2c4.com> (Jason A. Donenfeld's message of "Sat, 10 Jun 2017 04:59:06 +0200")
"Jason A. Donenfeld" <Jason@zx2c4.com> writes:
> Whenever you're comparing two MACs, it's important to do this using
> crypto_memneq instead of memcmp. With memcmp, you leak timing information,
> which could then be used to iteratively forge a MAC.
Do you have any pointers where I could learn more about this?
--
Kalle Valo
next prev parent reply other threads:[~2017-06-11 8:13 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-10 2:59 Jason A. Donenfeld
2017-06-10 2:59 ` [PATCH 1/6] sunrpc: use constant time memory comparison for mac Jason A. Donenfeld
2017-06-10 2:59 ` [PATCH 2/6] net/ipv6: " Jason A. Donenfeld
2017-06-10 2:59 ` [PATCH 3/6] ccree: use constant time memory comparison for macs and tags Jason A. Donenfeld
2017-06-10 7:43 ` Gilad Ben-Yossef
2017-06-10 10:54 ` Jason A. Donenfeld
2017-06-10 21:43 ` Henrique de Moraes Holschuh
2017-06-10 2:59 ` [PATCH 4/6] security/keys: use constant time memory comparison for macs Jason A. Donenfeld
2017-06-14 8:47 ` [kernel-hardening] " James Morris
2017-06-10 2:59 ` [PATCH 5/6] bluetooth/smp: use constant time memory comparison for secret values Jason A. Donenfeld
2017-06-10 13:49 ` Marcel Holtmann
2017-06-10 2:59 ` [PATCH 6/6] mac80211/wpa: use constant time memory comparison for MACs Jason A. Donenfeld
2017-06-13 8:20 ` Johannes Berg
2017-06-13 13:28 ` Jason A. Donenfeld
2017-06-11 8:13 ` Kalle Valo [this message]
2017-06-11 13:36 ` [PATCH 0/6] Constant Time Memory Comparisons Are Important Kees Cook
2017-06-11 20:48 ` Emmanuel Grumbach
2017-06-11 21:30 ` Emil Lenngren
2017-06-12 5:03 ` Emmanuel Grumbach
2017-06-12 7:33 ` Arend van Spriel
2017-06-11 21:06 ` Stephan Müller
2017-06-11 21:21 ` Jason A. Donenfeld
2017-06-11 21:20 ` [PATCH] rsa-pkcs1pad: use constant time memory comparison for MACs Jason A. Donenfeld
2017-06-20 3:38 ` Herbert Xu
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