[HARDWARE] Re:

Jim C. Nasby jim at nasby.net
Wed Sep 29 12:00:25 EDT 1999


Actually, a 64 bit CPU might help since you could theoretically check two keys
at once.

On Wed, Sep 29, 1999 at 05:34:31PM +0200, Jesper Monsted wrote:
> > > Doesn't RC5 require a 32-bit processor anyway?
> > 
> > It sure doesn't hurt.  Actually, a 64-bit processor would be much better.  But you
> > can do any length math you want on any chip you want, by building enough words
> > together and processing word at a time.  That is what we do with decimal
> > arithmetic, it is basically a 3.2 bit word.
> 
> Actually, i don't think a 64bit would help, since the algorithm works on
> 32-bit-nibbles... maybe if you can do SIMD on the 64-bit? 
> 
> /Jesper
> 
> "Microsoft does have a Year 2000 problem. We're it"
> (c) unknown       - Go Linux! http://www.linux.org/
> 
>  Jesper Monsted - RIPE: JM42 - jesper at monsted.com
> 
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Jim C. Nasby (aka Decibel!)                                  /^\
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