[rc5] RC64 keyspace

Rémi Guyomarch rguyom at mail.dotcom.fr
Mon Oct 27 20:00:01 EST 1997


Mike Lingk wrote:
> 
>   I was really hoping that the D.N. wasn't going to move onto the 64bit
> challenge, but since we cracked the 56 so quickly I don't have anything
> else to use my cycles on.
> 
>  What I was really wondering was whether we could use some analysis
> techniques to check high probability key space segments first, instead of
> just randomly checking the entire keyspace?  I read some information on
> this early in the 56bit days, but don't remember the specifics.  Has this
> already been ruled out?

You can't guess where the key is.

-- 
Rémi

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