# Re: Book on Pre-MATH for cryptography and cryptanalysis. Reply

*From*: "Douglas A. Gwyn" <DAGwyn@xxxxxxxx>*Date*: Thu, 26 Apr 2007 22:03:30 GMT

David Kahn's "The Codebreakers" (unabridged hardcover edition, not the

dumbed-down paperback edition) does a good job of presenting some

mathematical methods of analysis that can be understood at a high-

school level, for example Kasiski's method and the index of coincidence.

That reminds me that in addition to abstract algebra, a good foundation

in probability and statistics is helpful. A standard Community-College

level statistics text would suffice for that.

.

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