Cryptography Visualization Tools: A Tutorial

Dr. C.-K. Shene

Professor
Department of Computer Science
Michigan Technological University

Created: April 1, 2014
Last update: June 15, 2015

Select the topics you wish to review:

The SHA Cipher

SHAvisual User Guide

The Vigenènere Cipher

Introduction

Encryption and Decryption

Other Vigenère Cipher Devices

The Algebraic Nature of the Vigenère Cipher

Keyword Length Estimation

Kasiski's Method

Index of Coincidence

Keyword Length Estimation with Index of Coincidence

: The χ² Method; Frequency Analysis

Complete Examples

VIGvisual User Guide

Update History

June 15, 2015: SHAvisual is added.

April 22, 2014: A new page discussing frequency analysis is added. This discussion is also added to VIGvisual user guide. A new version of VIGvisual with this capability is available here.

April 18, 2014: Add frequency graphs to VIGvisual and user guide.

Acknowledgments

This project and its accompanying software tools development are supported by the National Science Foundation under grant DUE-0127401.