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Re: frequency analysis

2002-08-30 13:50:16
On Fri, 30 Aug 2002 13:58:37 CDT, "David J. Aronson" 
<dja2001(_at_)att(_dot_)net>  said:

How do cryptanalysis programs know when they've got it right?  I am told

It has to do with what's called the "unicity distance" - if we're expecting
to decrypt and find English, what are the chances that a random key will produce
1, 2, 3 blocks of English?

http://www.counterpane.com/crypto-gram-9812.html has a writeup on it.

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