On Fri, Dec 16, 2016 at 4:39 AM, Jason A. Donenfeld <Jason@xxxxxxxxx> wrote: > Hey JP, > > On Fri, Dec 16, 2016 at 9:08 AM, Jean-Philippe Aumasson > <jeanphilippe.aumasson@xxxxxxxxx> 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. > Tested this. Distribution and avalanche effect are still good. Speed wise I see about a 33% improvement over siphash (20 nsecs/op versus 32 nsecs). 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? Tom > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
