From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH v3] siphash: add cryptographically secure hashtable
 function
Date: Mon, 12 Dec 2016 15:01:00 -0800
Message-ID: <20161212230100.GN8388@tassilo.jf.intel.com>
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 <20161212221832.10653-1-Jason@zx2c4.com>
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Cc: Linus Torvalds <torvalds@linux-foundation.org>,
        "kernel-hardening@lists.openwall.com"
        <kernel-hardening@lists.openwall.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
        George Spelvin <linux@horizon.com>,
        Scott Bauer <sbauer@eng.utah.edu>,
        Andy Lutomirski <luto@amacapital.net>,
        Greg KH <gregkh@linuxfoundation.org>,
        Eric Biggers <ebiggers3@gmail.com>,
        Jean-Philippe Aumasson <jeanphilippe.aumasson@gmail.com>,
        "Daniel J . Bernstein" <djb@cr.yp.to>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>
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> Dozens of languages are already using this internally for their hash
> tables. Some of the BSDs already use this in their kernels. SipHash is
> a widely known high-speed solution to a widely known problem, and it's
> time we catch-up.

It would be nice if the network code could be converted to use siphash
for the secure sequence numbers. Right now it pulls in a lot of code
for bigger secure hashes just for that, which is a problem for tiny
kernels.

-Andi