Hacking Secret Ciphers with Python

Hacking Secret Ciphers with Python not only teaches you how to write in secret ciphers with paper and pencil. This book teaches you how to write your own cipher programs and also the hacking programs that can break the encrypted messages from these ciphers. Unfortunately, the programs in this book won’t get the reader in trouble with the law (or rather, fortunately) but it is a guide on the basics of both cryptography and the Python programming language. Instead of presenting a dull laundry list of concepts, this book provides the source code to several fun programming projects for adults and young adults.

Table of Contents

Chapter 1 – Making Paper Cryptography Tools
Chapter 2 – Installing Python
Chapter 3 – The Interactive Shell
Chapter 4 – Strings and Writing Programs
Chapter 5 – The Reverse Cipher
Chapter 6 – The Caesar Cipher
Chapter 7 – Hacking the Caesar Cipher with the Brute-Force Technique
Chapter 8 – Encrypting with the Transposition Cipher
Chapter 9 – Decrypting with the Transposition Cipher
Chapter 10 – Programming a Program to Test Our Program
Chapter 11 – Encrypting and Decrypting Files
Chapter 12 – Detecting English Programmatically
Chapter 13 – Hacking the Transposition Cipher
Chapter 14 – Modular Arithmetic with the Multiplicative and Affine Ciphers
Chapter 15 – The Affine Cipher
Chapter 16 – Hacking the Affine Cipher
Chapter 17 – The Simple Substitution Cipher
Chapter 18 – Hacking the Simple Substitution Cipher
Chapter 19 – The Vigenère Cipher
Chapter 20 – Frequency Analysis
Chapter 21 – Hacking the Vigenère Cipher
Chapter 22 – The One-Time Pad Cipher
Chapter 23 – Finding Prime Numbers
Chapter 24 – Public Key Cryptography and the RSA Cipher