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Boring stat/fact...

D

dawks

Diamond Member
Hmm. well i was bored in school, so I did some basic math.. I got to use Windows Calculator!!!! 🙂
  • 18,446,744,073,709,551,616 (2^64) Total Keys In RC5 (ok!)
  • 5,831,724,556,062,031,872 keys were completed at last stats run. Or 31.614% as the stats say.
You can compare your numbers to this. 🙂 🙂

-----=----=----=-----

How many possible keys for RC-128??

Like 4*10^128 (1.1579208923731619542357098500869e+77 keys)? Hehe.. Im not good with math at all. 🙂 🙂 🙂
 
Yeah.. I did the calculations on this a few years ago(I am not going into why I did.. I just did.. ok?!)

Now, think about something that uses 3 different 128bit ecryption keys, and how many possible keys there would be for something like that.

Sorry.. I am a posting fool tonight. :Q

SD
 
Actually the key counts for the contests are 2^64 and 2^128, not 2*10^64 and 4*10^128.
That makes RC5-64 about 18 quintillion, like you said, but RC5-128 would be around 3.4*10^38 keys. I think I calculated once how impossible it would be to do RC5-128, and I came up with this:

If every single person on earth had an eight-way Athlon Ghz computer (in other words, if we had 40 billion Ghz Athlons), it would still take over 79 trillion years to complete RC5-128 🙂

Or, if somehow we got our rate so that we could do the entire RC5-64 contest in one second, it would still take 584 billion years to complete RC5-128.

Fun with numbers!

Edit: My typing sucks before coffee
 
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