Table of contents

Slide 1

Slide 2

Slide 3

Slide 4

One-Time Pads

Vigenere Tableau

Advantage

Disadvantage

Vernam Cipher

Book ciphers

Book problems

Transpositions

Columnar Transposition

Trans Analysis

Further analysis

Digrams, Trigrams and Patterns

Cryptanalysis

product cipher

Stream vs Block

Good Ciphers

Commerical Grade