[RC5] special processor for cracking RC5?, was: What if RC5-64 is
Jim C. Nasby
jim at nasby.net
Sun Jun 3 15:03:29 EDT 2001
It certainly is possible. See
http://www.taniwha.com/~paul/rc5.html. Keep in mind that all of that is
based on 3 year old technology; it wouldn't surprise me at all to be able
to get 10MK/s on a single FPGA at this point.
Chris Hessmann wrote:
> Hello Mathieu, cow-friends,
> > On the main page of distributed.net we can read
> > "distributed.net's computing power has grown to
> > become equivalent to that of more than 160000 PII 266Mhz computers
> > working 24 hours a day, 7 days a week, 365 days a year!"
> > I doubt an organization could really build something A LOT stronger
> > than this, able to crack a 64 bits encryption in a year or so ??
> Well, this is just some sort of figment of the mind, but would it be
> possible to build a processor which is optimized for cracking a special
> encryption like RC5-64?
> As far as I have learned from this list, the x86 has some good features
> for cracking RC5, especially the rotation-instruction. Well, there should
> be a "dream-system" which supports all instructions needful for cracking,
> so it could work ten (a hundred?) times faster than every known
> (single-)processor on earth.
> And because I'm as much as a fan of the whole
> NSA/CIA/KGB-conspiracy-theory as all of you, I could imagine THEY
> (whoever) has the ability to build such a machine...
> Well, enough of this, let's get back on earth: Are there any instructions
> which could be supported by a processor to increment the cracking-process?
> And how fast could such a processor be?
> And please don't mention the quantum-processor, I know it could crack the
> whole RC5-64 in one second, but I imagine a system which could be build
> with today's abilities... ;)
> cu Chris
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Jim C. Nasby (aka Decibel!) /^\
jim at nasby.net /___\
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