[51763] in Cypherpunks

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Index of Coincidence

daemon@ATHENA.MIT.EDU (Marc North)
Sat Mar 9 14:49:14 1996

Date: Sat, 9 Mar 1996 11:35:55 -0800 (PST)
From: Marc North <mnorth@netcom.com>
To: cypherpunks@toad.com


I'm new to the mailing list, but I have grep'd tcmay's CP-FAQ and all
related FAQs for this, but have yet to find anything. 

I'm looking for detailed information on a statistical tool to aid in
cryptanalysis called an "index of coincidence".  I would appreciate it if
someone could please explain what this is, how one builds such an index
against a given ciphertext, and how it is valuable in the cryptanalysis of
said ciphertext. 

Many thanks,

Marc

--
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| Marc North  <*>  mnorth@netcom.com  <*>  San Jose, CA. |
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