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Visit this site: http://home.earthlink.net/~cjreed/crypto.html

Author:Corey Reed
Description: An introduction to cryptography, in particular affine enciphering applied to the alphabet, focusing on the use of linear algebra. Includes a primer on bases and modulus algebra and extensions for deciphering an affine enciphered message, using keys to get the entries of matrices A and B, cracking a code that was encrypted using affine enciphering, and using frequency analysis to crack a code. Includes a list of other links and a bibliography.

Levels: College
Languages: English
Resource Types: Course Notes, Problems/Puzzles
Math Topics: Matrices, Systems of Linear Equations, Cryptography

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