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Re: [TLS] Hardware Implementations .. Re: On Curve25519 and other possibilities (e.g. ietf256p, ietf384p, ietf521p,

Joachim Strömbergson <joachim@secworks.se> Fri, 27 June 2014 08:21 UTC

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Subject: Re: [TLS] Hardware Implementations .. Re: On Curve25519 and other possibilities (e.g. ietf256p, ietf384p, ietf521p,
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Aloha!

Hannes Tschofenig wrote:
> Based on the discussions at the IRTF interim meeting a little while
> ago I took the Curve25519 code and ported it to mbed (the online
> development platform ARM provides, see https://mbed.org).
> 
> I wanted to know how long it takes to generate key pairs since this
> is one of the most performance-demanding operations. To my surprise
> it was rather fast:
> 
> - 0.278821 seconds for generating a Curve25519 key pair on a Cortex
> M0 (FRDM-KL25Z, 48MHz) https://mbed.org/handbook/mbed-FRDM-KL25Z
> 
> - 0.047394 seconds for generating a Curve25519 key pair on a Cortex
> M3 (LPC1768, 96MHz) https://mbed.org/platforms/mbed-LPC1768/

Great work and information! Have you done a write-up of the results? I'm
very interested in info on the code size and data memory during operation.

> (Note that I did not include the calculation of the random numbers
> in those numbers since it will depend on a variety of factors,
> including the hardware capabilities of the used board.)

So how did you do the random generation? Fixed values or some other
mechanism?

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
========================================================================
 Joachim Strömbergson          Secworks AB          joachim@secworks.se
========================================================================
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