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Re: MD5 versus SHA
Earlier I posted the following information.
It has been pointed out that the DES code I used
probably is showing caching effects which are
unrealistic for comparison to the MD5 code.
Running DES over a 2 M byte file in /tmp (RAM), I got the
following numbers:
DES (libDes)
Sun 10/51 5.7 Mbps
Sun 20/61 7.5 Mbps
Sun 20/71 9.5 Mbps
I'm not sure if the desCore numbers are realistic, as a result.
Joe
> The following was forwarded at Bill Simpson's request.
>
> These updated MD5 numbers appear in a Sigcomm '95 submission,
> which is not being widely distributed until the notifications
> (at Sigcomm's request). The SHA and DES performance figures
> will appear in the updated publication, presuming acceptance.
>
> Joe Touch
> touch@isi.edu
> http://www.isi.edu/div7/atomic2
>
> >From touch@ISI.EDU Wed Mar 22 15:51:54 1995
> Date: Wed, 22 Mar 1995 15:50:36 -0800
> To: bill.simpson@um.cc.umich.edu
> Subject: Re: MD5 versus SHA
> ...
>
> I ran some preliminary numbers through SHA, and found it to be
> worse than MD5. I also measured a "fast" DES too:
>
> MD5 (orig) MD5 (opt) SHA DES (desCore)
>
> Sun 10/51 34 Mbps 37 Mbps 19 Mbps 20 Mbps
> Sun 20/61 36 Mbps 38 Mbps 23 Mbps 29 Mbps
> Sun 20/71 54 Mbps 57 Mbps 29 Mbps 37 Mbps
>
>
> So in speed:
>
> MD5 > DES > SHA
>
> I hope that helps a little...
>
> Joe