[rc5] key block

Costin RAIU craiu at usa.net
Sat Aug 30 23:59:13 EDT 1997

Rocket Socks wrote:
> On Tue, 26 Aug 1997, Costin RAIU wrote:
> > Ricki Lee King wrote:
> > >
> > > i bet the correct key will be found in the last place we look.
> > > ;)
> > >
> >
> > Let's hope not ! Anyway, one could expect the key to show up when  86%
> > of keyspace is complete :)
> Actually, I would hope that it would be the last space we check - why
> bother to keep checking if we found it... therefore making it the last....

Hey, that might be a fortunate result. (finding the key when %99.999
Maybe some old, dusty computer processed the block containing the right
and failed to decrypt the message due to excessive heat or used
components ?  (IMPROBABLE :)
Or, imagine Cyberian finding the key before Bovine... (VERY IMPROBABLE
Or worse, imagine Infinite Monkeys finding it before Cyberian AND Bovine
Anyway, let's keep checking with Bovine. 
PS: I suppose that when %90 of the keyspace will be completed, and no
found, we should start checking the keyspace again, without checking
the %10 left. That's because it's unlikely to find the key after
90% of the 2**56 keys.


Costin RAIU, Data Security Expert

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