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Re: memxor
From: |
Nikos Mavrogiannopoulos |
Subject: |
Re: memxor |
Date: |
Tue, 12 Apr 2011 15:27:16 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110223 Thunderbird/3.1.8 |
On 04/12/2011 03:12 PM, Simon Josefsson wrote:
>>> I had 10% speed-ups in a web server that used gnutls with the optimized
>>> version of memxor. That is because CBC encryption mode uses XOR heavily.
>>> 10% is enormous speed-up considering that this is a very small part of
>>> the encryption process.
>> OK, that is sufficient rationale for having this faster memxor function in
>> gnutls.
> I'm surprised the gnulib memxor ends up being used by GnuTLS at all.
> Nikos, shouldn't the Nettle implementation be used instead? Is this a
> question of the GnuTLS (gnulib) memxor symbol replacing the memxor that
> is shipped with Nettle? Maybe the solution is to fix the Nettle
> namespace.
GnuTLS uses gnulib memxor, because it might be compiled either with
nettle or libgcrypt.
- Re: restrict qualifier and C++., (continued)
- Re: restrict qualifier and C++., Paul Eggert, 2011/04/10
- Re: restrict qualifier and C++., Nikos Mavrogiannopoulos, 2011/04/10
- Re: restrict qualifier and C++., Paul Eggert, 2011/04/10
- Re: restrict qualifier and C++., Bruno Haible, 2011/04/10
- Re: restrict qualifier and C++., Nikos Mavrogiannopoulos, 2011/04/11
- memxor [was: restrict qualifier and C++.], Eric Blake, 2011/04/11
- Re: memxor, Bruno Haible, 2011/04/11
- Re: memxor, Nikos Mavrogiannopoulos, 2011/04/12
- Re: memxor, Bruno Haible, 2011/04/12
- Re: memxor, Simon Josefsson, 2011/04/12
- Re: memxor,
Nikos Mavrogiannopoulos <=
- Re: memxor, Simon Josefsson, 2011/04/12
- Re: memxor, Nikos Mavrogiannopoulos, 2011/04/12
- Re: memxor, Simon Josefsson, 2011/04/13