[rc5] RC64 keyspace

Mike Lingk mlingk at enteract.com
Mon Oct 27 10:46:45 EST 1997

  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?

  -Mike Lingk

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