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Introduction
Cryptography
Tom Davis
tomrdavis@earthlink.net
http://www.geometer.org/mathcircles
February 7, 2000
in
Introduction
Simple Substitution Ciphers
Improving a Substitution Cipher
Permutations
Vigenère Cipher
Converting Text to Numbers
Generating Long Keys
Better Pseudo-Random Sequences
The German ``Enigma'' Code
Public Key Cryptography
Trap-Door Ciphers
Certification
RSA Encryption
RSA Exercise
About this document ...
Zvezdelina Stankova-Frenkel 2000-12-17
