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Re: [Cfrg] Elliptic Curves - poll on specific curve around 256bit work factor (ends on February 23rd)

Mike Hamburg <mike@shiftleft.org> Thu, 19 February 2015 17:22 UTC

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Date: Thu, 19 Feb 2015 09:22:26 -0800
From: Mike Hamburg <mike@shiftleft.org>
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To: Jon Callas <jon@callas.org>, "cfrg@irtf.org" <cfrg@irtf.org>
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Subject: Re: [Cfrg] Elliptic Curves - poll on specific curve around 256bit work factor (ends on February 23rd)
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Jon, if you're using Curve41417, do you have benchmarks for Curve41417 
on x86 or amd64?  I've only ever seen their NEON benchmarks.

-- Mike

On 02/19/2015 08:07 AM, Jon Callas wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> I'm using Curve 41417 because it was designed for more-than 128 bits of strength, and has really good performance.
>
> There was a paper at CHES last summer, "Curve41417: Karatsuba revisited"
>
> http://eprint.iacr.org/2014/526.pdf
>
> The implementation they did on ARM with NEON is faster than the OpenSSL implementation of P-160, and runs at around 12% (yes, about eight times faster) of the speed of P-384.
>
> For me, it really hits the sweet spot. It's fast enough that I don't worry and secure enough that I don't worry.
>
> 	Jon
>
>
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