Elementary Cryptology (UMAP)

This module discusses a few of the methods used in earlier times to illustrate the nature of cryptology, then discusses briefly some of the more current developments in the field. Topics covered include subsitution ciphers, affine transformations, polygraphic ciphers, and public-key cryptography.

Table of Contents:

INTRODCUTION

SUBSTITUTION CIPHERS

AFFINE TRANSFORMATIONS

POLYGRAPHIC SYSTEMS

INTEGER MATRICES

PUBLIC-KEY CRYPTOGRAPHY

WHAT'S IN USE TODAY?

EXERCISES

SOLUTIONS TO THE EXERCISES

APPENDIX A: BASIC PROGRAM FOR MODULAR REDUCTION

APPENDIX B: BASIC PROGRAM TO SOLVE ed = 1

REFERENCES

ABOUT THE AUTHOR