Hacking Secret Ciphers with Python

Download free course Hacking Secret Ciphers with Python, pdf file on 442 pages by Al Sweigart.

There are many books that teach beginners how to write secret messages using ciphers. There are a couple books that teach beginners how to hack ciphers. As far as I can tell, there are no books to teach beginners how to write programs to hack ciphers. This book fills that gap.

This book is for complete beginners who do not know anything about encryption, hacking, or cryptography. The ciphers in this book (except for the RSA cipher in the last chapter) are all centuries old, and modern computers now have the computational power to hack their encrypted messages. No modern organization or individuals use these ciphers anymore. As such, there's no reasonable context in which you could get into legal trouble for the information in this book.

Table of contents

Making Paper Cryptography Tools
Downloading and Installing Python
The Interactive Shell
String and Writing Programs
The Reverse Cipher
The Caesar Cipher
Hacking the Caesar Cipher with the Brute Force Technique
The Transposition Cipher, Encrypting
The Transposition Cipher, Decrypting
Programming a Program to Test Our Program
Encrypting and Decrypting Files
Detecting English Programmatically
Hacking the Transposition Cipher
Modular Arithmetic and the Multiplicative Cipher
The Affine Cipher
Hacking the Affine Cipher
The Simple Substitution Cipher
Hacking the Simple Substitution Cipher
The Vigenère Cipher
Frequency Analysis
Hacking the Vigenère Cipher
The One-Time Pad Cipher
Finding Prime Numbers
Public Key Cryptography and the RSA Cipher

Pages :	442
Size :	3.9 MB
Downloads:	273
Created:	2022-02-02
License:	CC BY-NC-SA
Author(s):	Al Sweigart

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