[RC5] rc5-72 completion rate

waldo kitty wkitty42 at alltel.net
Mon Dec 30 09:44:34 EST 2002


these "estimated time to exhause keyspace" calculations... are they for the remaining
keyspace or for the entire keyspace based on the (then) current calculation speed?

Jim C. Nasby wrote:
> On Thu, Dec 26, 2002 at 10:19:03AM -0800, Michael Pelletier wrote:
> 
>>At the moment, the RC5-72 project is showing a completion time of
>>3,572 years.  How much over 1,000 years was RC5-64, is there any way
>>to comb that data out of the stats database easily?
> 
>  
> No, but our history page (http://distributed.net/history.html) has some
> information:
> 
> October 22, 1997 - RC5-56 Finished
> RC5-56 is cracked after 212 days. Percent of keyspace completed: 47.03%,
> 5.3 Gk/s average rate, estimated time to exhaust keyspace at current
> rate: 83 days. 
> 
> RC5-64 is started. On the first day, 152799 blocks were checked at a
> rate of 475 Mkeys/sec. Time to exhaust keyspace at this rate: 1,235
> years
> 
> November 28, 1997
> RC5-64 percent of keyspace completed: 0.10%, 8.4 Gk/s average rate,
> estimated time to exhaust keyspace at this rate: 69.5 years. 
> 
> October 19, 1998
> RC5-64 percent of keyspace completed: 3.01%, 40.5 Gk/s average rate,
> estimated time to exhaust keyspace at this rate: 14.05 years. 


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