From: "George Spelvin" <linux@sciencehorizons.net>
To: Jason@zx2c4.com, linux@sciencehorizons.net
Cc: ak@linux.intel.com, davem@davemloft.net, David.Laight@aculab.com,
djb@cr.yp.to, ebiggers3@gmail.com, hannes@stressinduktion.org,
jeanphilippe.aumasson@gmail.com,
kernel-hardening@lists.openwall.com,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
luto@amacapital.net, netdev@vger.kernel.org, tom@herbertland.com,
torvalds@linux-foundation.org, tytso@mit.edu,
vegard.nossum@gmail.com
Subject: Re: [PATCH v5 1/4] siphash: add cryptographically secure PRF
Date: 16 Dec 2016 21:15:03 -0500 [thread overview]
Message-ID: <20161217021503.32767.qmail@ns.sciencehorizons.net> (raw)
In-Reply-To: <CAHmME9r4YNqNSZ-KXAHtJN_vm+eL1tSoC-6muHaFUN6fWhkO2g@mail.gmail.com>
> I already did this. Check my branch.
Do you think it should return "u32" (as you currently have it) or
"unsigned long"? I thought the latter, since it doesn't cost any
more and makes more
> I wonder if this could also lead to a similar aliasing
> with arch_get_random_int, since I'm pretty sure all rdrand-like
> instructions return native word size anyway.
Well, Intel's can return 16, 32 or 64 bits, and it makes a
small difference with reseed scheduling.
>> - Ted, Andy Lutorminski and I will try to figure out a construction of
>> get_random_long() that we all like.
> And me, I hope... No need to make this exclusive.
Gaah, engage brain before fingers. That was so obvious I didn't say
it, and the result came out sounding extremely rude.
A better (but longer) way to write it would be "I'm sorry that I, Ted,
and Andy are all arguing with you and each other about how to do this
and we can't finalize this part yet".
WARNING: multiple messages have this Message-ID (diff)
From: "George Spelvin" <linux@sciencehorizons.net>
To: Jason@zx2c4.com, linux@sciencehorizons.net
Cc: ak@linux.intel.com, davem@davemloft.net, David.Laight@aculab.com,
djb@cr.yp.to, ebiggers3@gmail.com, hannes@stressinduktion.org,
jeanphilippe.aumasson@gmail.com,
kernel-hardening@lists.openwall.com,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
luto@amacapital.net, netdev@vger.kernel.org, tom@herbertland.com,
torvalds@linux-foundation.org, tytso@mit.edu,
vegard.nossum@gmail.com
Subject: [kernel-hardening] Re: [PATCH v5 1/4] siphash: add cryptographically secure PRF
Date: 16 Dec 2016 21:15:03 -0500 [thread overview]
Message-ID: <20161217021503.32767.qmail@ns.sciencehorizons.net> (raw)
In-Reply-To: <CAHmME9r4YNqNSZ-KXAHtJN_vm+eL1tSoC-6muHaFUN6fWhkO2g@mail.gmail.com>
> I already did this. Check my branch.
Do you think it should return "u32" (as you currently have it) or
"unsigned long"? I thought the latter, since it doesn't cost any
more and makes more
> I wonder if this could also lead to a similar aliasing
> with arch_get_random_int, since I'm pretty sure all rdrand-like
> instructions return native word size anyway.
Well, Intel's can return 16, 32 or 64 bits, and it makes a
small difference with reseed scheduling.
>> - Ted, Andy Lutorminski and I will try to figure out a construction of
>> get_random_long() that we all like.
> And me, I hope... No need to make this exclusive.
Gaah, engage brain before fingers. That was so obvious I didn't say
it, and the result came out sounding extremely rude.
A better (but longer) way to write it would be "I'm sorry that I, Ted,
and Andy are all arguing with you and each other about how to do this
and we can't finalize this part yet".
next prev parent reply other threads:[~2016-12-17 2:15 UTC|newest]
Thread overview: 182+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-15 20:29 [PATCH v5 0/4] The SipHash Patchset Jason A. Donenfeld
2016-12-15 20:29 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-15 20:30 ` [PATCH v5 1/4] siphash: add cryptographically secure PRF Jason A. Donenfeld
2016-12-15 20:30 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-15 22:42 ` George Spelvin
2016-12-15 22:42 ` [kernel-hardening] " George Spelvin
2016-12-15 23:00 ` Jean-Philippe Aumasson
2016-12-15 23:00 ` [kernel-hardening] " Jean-Philippe Aumasson
2016-12-15 23:28 ` George Spelvin
2016-12-15 23:28 ` [kernel-hardening] " George Spelvin
2016-12-16 17:06 ` David Laight
2016-12-16 17:06 ` [kernel-hardening] " David Laight
2016-12-16 17:06 ` David Laight
2016-12-16 17:09 ` Jason A. Donenfeld
2016-12-16 17:09 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 17:09 ` Jason A. Donenfeld
2016-12-16 3:46 ` George Spelvin
2016-12-16 3:46 ` [kernel-hardening] " George Spelvin
2016-12-16 8:08 ` Jean-Philippe Aumasson
2016-12-16 8:08 ` [kernel-hardening] " Jean-Philippe Aumasson
2016-12-16 12:39 ` Jason A. Donenfeld
2016-12-16 12:39 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 13:22 ` Jean-Philippe Aumasson
2016-12-16 13:22 ` [kernel-hardening] " Jean-Philippe Aumasson
2016-12-16 15:51 ` Jason A. Donenfeld
2016-12-16 15:51 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 17:36 ` George Spelvin
2016-12-16 17:36 ` [kernel-hardening] " George Spelvin
2016-12-16 18:00 ` Jason A. Donenfeld
2016-12-16 18:00 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 20:17 ` George Spelvin
2016-12-16 20:17 ` [kernel-hardening] " George Spelvin
2016-12-16 20:43 ` Theodore Ts'o
2016-12-16 20:43 ` [kernel-hardening] " Theodore Ts'o
2016-12-16 22:13 ` George Spelvin
2016-12-16 22:13 ` [kernel-hardening] " George Spelvin
2016-12-16 22:15 ` Andy Lutomirski
2016-12-16 22:15 ` [kernel-hardening] " Andy Lutomirski
2016-12-16 22:15 ` Andy Lutomirski
2016-12-16 22:18 ` Jason A. Donenfeld
2016-12-16 22:18 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 23:44 ` George Spelvin
2016-12-16 23:44 ` [kernel-hardening] " George Spelvin
2016-12-17 1:39 ` Jason A. Donenfeld
2016-12-17 1:39 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-17 2:15 ` George Spelvin [this message]
2016-12-17 2:15 ` George Spelvin
2016-12-17 15:41 ` Theodore Ts'o
2016-12-17 15:41 ` [kernel-hardening] " Theodore Ts'o
2016-12-17 16:14 ` Jeffrey Walton
2016-12-17 16:14 ` [kernel-hardening] " Jeffrey Walton
2016-12-19 17:21 ` Jason A. Donenfeld
2016-12-17 12:42 ` George Spelvin
2016-12-17 12:42 ` [kernel-hardening] " George Spelvin
2016-12-16 20:39 ` Jason A. Donenfeld
2016-12-16 20:39 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 19:47 ` Tom Herbert
2016-12-16 19:47 ` [kernel-hardening] " Tom Herbert
2016-12-16 20:41 ` George Spelvin
2016-12-16 20:41 ` [kernel-hardening] " George Spelvin
2016-12-16 20:57 ` Tom Herbert
2016-12-16 20:57 ` [kernel-hardening] " Tom Herbert
2016-12-16 20:44 ` Daniel Micay
2016-12-16 20:44 ` [kernel-hardening] " Daniel Micay
2016-12-16 21:09 ` Jason A. Donenfeld
2016-12-17 15:21 ` George Spelvin
2016-12-17 15:21 ` [kernel-hardening] " George Spelvin
2016-12-19 14:14 ` David Laight
2016-12-19 14:14 ` [kernel-hardening] " David Laight
2016-12-19 14:14 ` David Laight
2016-12-19 18:10 ` George Spelvin
2016-12-19 18:10 ` [kernel-hardening] " George Spelvin
2016-12-19 20:18 ` Jean-Philippe Aumasson
2016-12-19 20:18 ` [kernel-hardening] " Jean-Philippe Aumasson
2016-12-16 2:14 ` kbuild test robot
2016-12-16 2:14 ` [kernel-hardening] " kbuild test robot
2016-12-17 14:55 ` Jeffrey Walton
2016-12-17 14:55 ` [kernel-hardening] " Jeffrey Walton
2016-12-19 17:08 ` Jason A. Donenfeld
2016-12-19 17:08 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-19 17:19 ` Jean-Philippe Aumasson
2016-12-19 17:19 ` [kernel-hardening] " Jean-Philippe Aumasson
2016-12-15 20:30 ` [PATCH v5 2/4] siphash: add Nu{32,64} helpers Jason A. Donenfeld
2016-12-15 20:30 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 10:39 ` David Laight
2016-12-16 10:39 ` [kernel-hardening] " David Laight
2016-12-16 10:39 ` David Laight
2016-12-16 15:44 ` George Spelvin
2016-12-16 15:44 ` [kernel-hardening] " George Spelvin
2016-12-15 20:30 ` [PATCH v5 3/4] secure_seq: use SipHash in place of MD5 Jason A. Donenfeld
2016-12-15 20:30 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 9:59 ` David Laight
2016-12-16 9:59 ` [kernel-hardening] " David Laight
2016-12-16 9:59 ` David Laight
2016-12-16 15:57 ` Jason A. Donenfeld
2016-12-16 15:57 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 15:57 ` Jason A. Donenfeld
2016-12-15 20:30 ` [PATCH v5 4/4] random: " Jason A. Donenfeld
2016-12-15 20:30 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 3:03 ` [PATCH v6 0/5] The SipHash Patchset Jason A. Donenfeld
2016-12-16 3:03 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 3:03 ` [PATCH v6 1/5] siphash: add cryptographically secure PRF Jason A. Donenfeld
2016-12-16 3:03 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 3:03 ` [PATCH v6 2/5] secure_seq: use SipHash in place of MD5 Jason A. Donenfeld
2016-12-16 3:03 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 3:03 ` [PATCH v6 3/5] random: " Jason A. Donenfeld
2016-12-16 3:03 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 21:31 ` Andy Lutomirski
2016-12-16 21:31 ` [kernel-hardening] " Andy Lutomirski
2016-12-16 21:31 ` Andy Lutomirski
2016-12-16 3:03 ` [PATCH v6 4/5] md5: remove from lib and only live in crypto Jason A. Donenfeld
2016-12-16 3:03 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-16 3:03 ` [PATCH v6 5/5] syncookies: use SipHash in place of SHA1 Jason A. Donenfeld
2016-12-16 3:03 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-21 23:02 ` [PATCH v7 0/6] The SipHash Patchset Jason A. Donenfeld
2016-12-21 23:02 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-21 23:02 ` [PATCH v7 1/6] siphash: add cryptographically secure PRF Jason A. Donenfeld
2016-12-21 23:02 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-22 1:40 ` Stephen Hemminger
2016-12-22 1:40 ` [kernel-hardening] " Stephen Hemminger
2016-12-21 23:02 ` [PATCH v7 2/6] secure_seq: use SipHash in place of MD5 Jason A. Donenfeld
2016-12-21 23:02 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-21 23:02 ` [PATCH v7 3/6] random: " Jason A. Donenfeld
2016-12-21 23:02 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-21 23:13 ` Jason A. Donenfeld
2016-12-21 23:13 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-21 23:42 ` Andy Lutomirski
2016-12-21 23:42 ` [kernel-hardening] " Andy Lutomirski
2016-12-21 23:42 ` Andy Lutomirski
2016-12-22 2:07 ` Hannes Frederic Sowa
2016-12-22 2:07 ` [kernel-hardening] " Hannes Frederic Sowa
2016-12-22 2:07 ` Hannes Frederic Sowa
2016-12-22 2:09 ` Andy Lutomirski
2016-12-22 2:09 ` [kernel-hardening] " Andy Lutomirski
2016-12-22 2:09 ` Andy Lutomirski
2016-12-22 2:49 ` Jason A. Donenfeld
2016-12-22 2:49 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-22 2:49 ` Jason A. Donenfeld
2016-12-22 3:12 ` Jason A. Donenfeld
2016-12-22 3:12 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-22 3:12 ` Jason A. Donenfeld
2016-12-22 5:41 ` Theodore Ts'o
2016-12-22 5:41 ` [kernel-hardening] " Theodore Ts'o
2016-12-22 6:03 ` Jason A. Donenfeld
2016-12-22 15:58 ` Theodore Ts'o
2016-12-22 15:58 ` [kernel-hardening] " Theodore Ts'o
2016-12-22 16:16 ` Jason A. Donenfeld
2016-12-22 16:16 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-22 16:30 ` Theodore Ts'o
2016-12-22 16:36 ` Jason A. Donenfeld
2016-12-22 12:47 ` Hannes Frederic Sowa
2016-12-22 12:47 ` [kernel-hardening] " Hannes Frederic Sowa
2016-12-22 13:10 ` Jason A. Donenfeld
2016-12-22 15:05 ` Hannes Frederic Sowa
2016-12-22 15:12 ` Jason A. Donenfeld
2016-12-22 15:29 ` Jason A. Donenfeld
2016-12-22 15:33 ` Hannes Frederic Sowa
2016-12-22 15:33 ` [kernel-hardening] " Hannes Frederic Sowa
2016-12-22 15:41 ` Jason A. Donenfeld
2016-12-22 15:51 ` Hannes Frederic Sowa
2016-12-22 15:51 ` [kernel-hardening] " Hannes Frederic Sowa
2016-12-22 15:53 ` Jason A. Donenfeld
2016-12-22 15:54 ` Theodore Ts'o
2016-12-22 15:54 ` [kernel-hardening] " Theodore Ts'o
2016-12-22 18:08 ` Hannes Frederic Sowa
2016-12-22 18:13 ` Jason A. Donenfeld
2016-12-22 18:13 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-22 19:50 ` Theodore Ts'o
2016-12-22 2:31 ` Jason A. Donenfeld
2016-12-22 2:31 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-22 2:31 ` Jason A. Donenfeld
2016-12-21 23:02 ` [PATCH v7 4/6] md5: remove from lib and only live in crypto Jason A. Donenfeld
2016-12-21 23:02 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-21 23:02 ` [PATCH v7 5/6] syncookies: use SipHash in place of SHA1 Jason A. Donenfeld
2016-12-21 23:02 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-21 23:02 ` [PATCH v7 6/6] siphash: implement HalfSipHash1-3 for hash tables Jason A. Donenfeld
2016-12-21 23:02 ` [kernel-hardening] " Jason A. Donenfeld
2016-12-22 0:46 ` Andi Kleen
2016-12-22 0:46 ` [kernel-hardening] " Andi Kleen
2016-12-16 20:43 [PATCH v5 1/4] siphash: add cryptographically secure PRF Jason A. Donenfeld
2016-12-16 20:49 Jason A. Donenfeld
2016-12-16 21:25 ` George Spelvin
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