From: Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: George Spelvin <linux@sciencehorizons.net>,
Andi Kleen <ak@linux.intel.com>,
David Miller <davem@davemloft.net>,
David Laight <David.Laight@aculab.com>,
Eric Biggers <ebiggers3@gmail.com>,
Hannes Frederic Sowa <hannes@stressinduktion.org>,
kernel-hardening@lists.openwall.com,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
Netdev <netdev@vger.kernel.org>,
Tom Herbert <tom@herbertland.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
"Theodore Ts'o" <tytso@mit.edu>,
vegard.nossum@gmail.com, "Daniel J . Bernstein" <djb@cr.yp.to>
Subject: Re: [PATCH v5 1/4] siphash: add cryptographically secure PRF
Date: Fri, 16 Dec 2016 13:22:37 +0000 [thread overview]
Message-ID: <CAGiyFddB_HT3H2yhYQ5rprYZ487rJ4iCaH9uPJQD57hiPbn9ng@mail.gmail.com> (raw)
In-Reply-To: <CAHmME9pjoAsoct1sVDpFFuqaqutv9X7DGJ5OBQXRAS57KFimUA@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 827 bytes --]
It needs some basic security review, which I'll try do next week (check for
security margin, optimality of rotation counts, etc.). But after a lot of
experience with this kind of construction (BLAKE, SipHash, NORX), I'm
confident it will be safe as it is.
On Fri, Dec 16, 2016 at 1:44 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> Hey JP,
>
> On Fri, Dec 16, 2016 at 9:08 AM, Jean-Philippe Aumasson
> <jeanphilippe.aumasson@gmail.com> wrote:
> > Here's a tentative HalfSipHash:
> > https://github.com/veorq/SipHash/blob/halfsiphash/halfsiphash.c
> >
> > Haven't computed the cycle count nor measured its speed.
>
> This is incredible. Really. Wow!
>
> I'll integrate this into my patchset and will write up some
> documentation about when one should be used over the other.
>
> Thanks again. Quite exciting.
>
> Jason
>
[-- Attachment #2: Type: text/html, Size: 1706 bytes --]
WARNING: multiple messages have this Message-ID (diff)
From: Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: George Spelvin <linux@sciencehorizons.net>,
Andi Kleen <ak@linux.intel.com>,
David Miller <davem@davemloft.net>,
David Laight <David.Laight@aculab.com>,
Eric Biggers <ebiggers3@gmail.com>,
Hannes Frederic Sowa <hannes@stressinduktion.org>,
kernel-hardening@lists.openwall.com,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
Netdev <netdev@vger.kernel.org>,
Tom Herbert <tom@herbertland.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Theodore Ts'o <tytso@mit.edu>,
vegard.nossum@gmail.com, "Daniel J . Bernstein" <djb@cr.yp.to>
Subject: [kernel-hardening] Re: [PATCH v5 1/4] siphash: add cryptographically secure PRF
Date: Fri, 16 Dec 2016 13:22:37 +0000 [thread overview]
Message-ID: <CAGiyFddB_HT3H2yhYQ5rprYZ487rJ4iCaH9uPJQD57hiPbn9ng@mail.gmail.com> (raw)
In-Reply-To: <CAHmME9pjoAsoct1sVDpFFuqaqutv9X7DGJ5OBQXRAS57KFimUA@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 827 bytes --]
It needs some basic security review, which I'll try do next week (check for
security margin, optimality of rotation counts, etc.). But after a lot of
experience with this kind of construction (BLAKE, SipHash, NORX), I'm
confident it will be safe as it is.
On Fri, Dec 16, 2016 at 1:44 PM Jason A. Donenfeld <Jason@zx2c4.com> wrote:
> Hey JP,
>
> On Fri, Dec 16, 2016 at 9:08 AM, Jean-Philippe Aumasson
> <jeanphilippe.aumasson@gmail.com> wrote:
> > Here's a tentative HalfSipHash:
> > https://github.com/veorq/SipHash/blob/halfsiphash/halfsiphash.c
> >
> > Haven't computed the cycle count nor measured its speed.
>
> This is incredible. Really. Wow!
>
> I'll integrate this into my patchset and will write up some
> documentation about when one should be used over the other.
>
> Thanks again. Quite exciting.
>
> Jason
>
[-- Attachment #2: Type: text/html, Size: 1706 bytes --]
next prev parent reply other threads:[~2016-12-16 13:22 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 [this message]
2016-12-16 13:22 ` 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
2016-12-17 2:15 ` [kernel-hardening] " 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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