[RC5] Estimated key rate on DES II?

Jim C. Nasby nasby at enteract.com
Mon Jan 12 18:09:29 EST 1998


Well, I did some calculations yesterday on RC5:

Assume:
Key rate increase for DES clients is 4x (conservative)
RC5 keyrate of 8271509 kkeys/sec (overall average, current rate is closer 
to
12gkeys/sec)
100% conversion (not gonna happen, but the conservativeness of the first 2
assumptions should more than compensate)

Using these numbers and a little math, we could completely exhaust DES in
25.6 days. So, I'd say we can probably bank on the $10,000.

Jim

Joe Zbiciak wrote:

> Hi,
>
> Based on the speed of the 2.7 clients and our current RC5-64 keyrate,
> does anyone have an estimate of d.n's keyrate for DES II?
>
> I saw some speculation awhile back, but it was very vague, and was
> based on the relative rates of the DESCHALL clients vs. the RC5 clients
> from the same time.  RC5's gotten alot faster since then, I'm sure.
>
> The DES II clients are due out later today (according to the
> annoucement) so real benchmark results are due out real-soon-now, I'll
> be willing to wager.  :-)  (Please, no OS/CPU/whatever war!)  Anyone
> care to do the math from there?  (Or even post some data, so I can do
> the math myself?)
>
> (I realize the announcement mentioned trying to crush DES II in 3 weeks,
> but it's be crazy to try to extrapolate from that without knowing what
> the assumptions were that went into that statement.)
>
> Regards,
>
> --Joe
>
> --
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          /^\            Jim C. Nasby (aka Decibel!)
        /     \          nasbjim at charlie.acc.iit.edu
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