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Re: Krypteret disk uden brug af kerne-source?

 

Jon Bendtsen wrote:

[klip]

> Desuden bruger PPDD blowfish, og loop-aes AES, og i følge en
> mail på en anden liste, så var blowfish hurtigere end AES.
> (poster den her senere når jeg kommer hjem)

Okay, den var hurtigere, meeeen det er godt nok ikke meget.

On Wed, Mar 12, 2003 at 06:19:02PM -0500, Greg Freemyer wrote:
> Thanks.
>
> I also found a couple of good articles.
>
> One on theory http://www.securityfocus.com/infocus/1673
>
> And one with good bonnie++ results:  (This took an hour of googling to find)
>
> http://vware.hypermart.net/howto_filesystem_encryption.htm
>
> From the last one:
>
> Based on a Pentium 3 800 MHz - 60 GB IDE drive -- UDMA (66)
>
> Crypto                   Write speed      % Loss           Read speed            % Loss
> Unencrypted            24619 kB/s       --                  25273 kB/s               --
> AES-128bit             20880 kB/s     15.2%               8054 kB/s           68.1%
> AES-256bit             17699 kB/s     28.1%               8031 kB/s           68.2%
> 3DES-64bit               4846 kB/s     80.3%               3334 kB/s           86.8%
> 3DES-192bit             4869 kB/s     80.2%               3334 kB/s           86.8%
> BLOWFISH-128bit 19769 kB/s    19.7%               8029 kB/s           68.2%
> BLOWFISH-256bit 19755 kB/s    19.8%               8047 kB/s           68.2%
>
> That agrees with your slowdown estimates.
>
> Greg


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