IPSec improvement

[Slawa Olhovchenkov]

On Fri, Jun 14, 2013 at 03:59:22PM +0200, VANHULLEBUS Yvan wrote:

> On Fri, Jun 14, 2013 at 05:24:30PM +0400, Slawa Olhovchenkov wrote:
> > On Fri, Jun 14, 2013 at 03:14:00PM +0200, VANHULLEBUS Yvan wrote:
> > 
> > > On Fri, Jun 14, 2013 at 02:36:15PM +0400, Slawa Olhovchenkov wrote:
> > > > I am plan to do some improve in IPSec stack:
> > > > 
> > > > - AES-GCM support (from OpenBSD)
> > > 
> > > Dylan Castine already started to work on that last year (see ML's
> > > archives), and we took some time to work together on that.
> > > 
> > > Unfortunately, patch hasn't been commited since, as Dylan needed some
> > > more time to do some important cleanups on the code.
> > > 
> > > I'll try to recontact Dylan to see if he could take time to finish
> > > that.
> > 
> > OK, you inform about progress in this list?
> 
> Yep.
> 
> Just for information, Dylan also talked about such code last year, but
> the patch I got were from Riaan Kruger.
> I just sent him a mail on that subject.
> 
> The patchset Riaan provided me was working on basic tests.
> On the benchmark we did, software AES-GCM was faster than software
> AES-CBC+SHA1, but slower than hardware accelerated AES-CBC+SHA1 (tried
> with both VIA's Padlock and Intel's AESNI).
> 
> As AES-CBC / SHA1 acceleration is quite common today, but AES-GCM
> hardware acceleration is still not so common, AES-GCM may be really
> interesting only on hardware which provide such acceleration (or in
> older hardware which provide none of them).
> 
> We also started to have a look at AES-CTR acceleration (more common
> than AES-GCM acceleration) to provide a partial hardware work for
> AES-GCM, and it looks like at least OpenSSL's guys coud implement
> that, with interesting benchmarks.

As I know, AESNI support accelerating AES-GCM https://crypto.stanford.edu/RealWorldCrypto/slides/gueron.pdf

> > > > - GOST 28147-89 and 34.10-2001 support (by modules)
> > > > - support for IPSec acceleration in network cards
> > > 
> > > What kind of acceleration, in which kind of network card ?
> > > 
> > > Are you talking about encryption/authentication done in the network
> > > card (or CPUs, or .....), or do you want to use advanced IPsec
> > > offloading provided by some chipsets ?
> > 
> > IPSec offloadin (ex. Intel 82599).
> 
> Interesting.
> 
> 
> Yvan.