Date: Fri, 16 Dec 2016 15:44:27 -0500 From: Daniel Micay <danielmicay@...il.com> To: kernel-hardening@...ts.openwall.com, "Jason A. Donenfeld" <Jason@...c4.com> Cc: Jean-Philippe Aumasson <jeanphilippe.aumasson@...il.com>, George Spelvin <linux@...encehorizons.net>, Andi Kleen <ak@...ux.intel.com>, David Miller <davem@...emloft.net>, David Laight <David.Laight@...lab.com>, Eric Biggers <ebiggers3@...il.com>, Hannes Frederic Sowa <hannes@...essinduktion.org>, Linux Crypto Mailing List <linux-crypto@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, Andy Lutomirski <luto@...capital.net>, Netdev <netdev@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Theodore Ts'o <tytso@....edu>, vegard.nossum@...il.com, "Daniel J . Bernstein" <djb@...yp.to> Subject: Re: Re: [PATCH v5 1/4] siphash: add cryptographically secure PRF On Fri, 2016-12-16 at 11:47 -0800, Tom Herbert wrote: > > That's about 3x of jhash speed (7 nsecs). So that might closer > to a more palatable replacement for jhash. Do we lose any security > advantages with halfsiphash? Have you tested a lower round SipHash? Probably best to stick with the usual construction for non-DoS mitigation, but why not try SipHash 1-3, 1-2, etc. for DoS mitigation? Rust and Swift both went with SipHash 1-3 for hash tables. Download attachment "signature.asc" of type "application/pgp-signature" (867 bytes)
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