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More Graphs and Displays. Stem-and-Leaf Plots Each number is separated into a STEM and LEAF component. The STEM is the leftmost digit(s). The LEAF is.
CS 5950/6030 Network Security Class 6 (W, 9/14/05) Leszek Lilien Department of Computer Science Western Michigan University [Using some slides prepared.
Autokey Ciphers. History The Autokey Cipher is almost identical to the Vigenère Cipher – only it’s more secure It was first invented by Girolamo Cardano.