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From: "Jehan Pagès" <jehan.marmottard@gmail.com>
To: Francis Dupont <Francis.Dupont@fdupont.fr>
Cc: caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] Ocaml and cryptography
Date: Sat, 26 Mar 2011 15:47:41 +0900	[thread overview]
Message-ID: <AANLkTimg4Q6rucJjfKjgtLiLo2NX-oRLEGFXGv+h7VDd@mail.gmail.com> (raw)
In-Reply-To: <201103241651.p2OGpuSK090082@givry.fdupont.fr>

Hi,

I see. Indeed I checked OpenSSL, it is using massively assembly code
for SHA1 and many other (all?) crypto code...

And my tests on a 64 bits machine and the huge improvement for OpenSSL
there makes me think that they must be making very good use of the 64
bits register for saving the 32 bits words of SHA1 algorithm (they
probably make some calculation on 2 words at once thanks to this).

Jehan

2011/3/25 Francis Dupont <Francis.Dupont@fdupont.fr>:
> This is not the first study about crypto implementation speeds.
> Usually the winner for heavily used algorithms is OpenSSL,
> BTW not because it is well written but simply because it is
> optmized in assembly for common platforms (including SSE* & co
> on x86).
>
> Regards
>
> Francis.Dupont@fdupont.fr
>

  reply	other threads:[~2011-03-26  6:47 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-03-24 12:17 Jehan Pagès
2011-03-24 13:26 ` Gerd Stolpmann
2011-03-26  6:44   ` Jehan Pagès
2011-03-28 19:13     ` Gerd Stolpmann
2011-03-24 16:51 ` Francis Dupont
2011-03-26  6:47   ` Jehan Pagès [this message]
2011-03-26  9:06     ` Anil Madhavapeddy
2011-03-26 11:53       ` Jehan Pagès

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