Re: Comaprison between MD5 and SHA

On Sat, 25 Nov 2006 05:22:22 -0800, Tom St Denis wrote:


Felix Rawlings wrote:
On Fri, 24 Nov 2006 02:49:36 -0800, Tom St Denis wrote:


Kristian Gjøsteen wrote:
gen_vlsi <jesuraj.vinoth@xxxxxxxxx> wrote:
What if the message is more
than 2^64? What do we do in that case?

Break out the champagne, congratulate yourself on having huge
computing resources, then switch to SHA-512.

Let's see... my box (Intel Core 2 Duo) can hash MD5 at roughly 8
cycles per byte (or so).

Would that be 16 cycles/byte per CPU?

Um? No. You can't easily multi-thread MD5 and expect performance
[especially since it's basically 64 rounds of very serial operations].

So it would yield the same performance on a single CPU machine?


.