Cracking Codes with Python: An Introduction to Building and Breaking Ciphers

Cracking Codes with Python is an interactive book that teaches you how to program in Python while creating and breaking ciphers! With step-by-step instructions, you'll learn how to make, test, and hack programs that encrypt text using classical ciphers like the transposition cipher and Vigenère cipher.

You'll start with simple programs for the reverse and Caesar ciphers and then move on to public key cryptography, the type of encryption used in today's online transactions.

By the end of the book, you'll have learned how to code in Python and will have the clever programs to prove it! Plus, you'll discover how to combine loops, variables, and flow control statements into real working programs, use dictionary files to instantly detect whether decrypted messages are valid English or gibberish, create test programs to make sure that your code encrypts and decrypts correctly, and code a working example of the affine cipher.

With Al Sweigart's expert guidance, you'll have fun while learning how to code in Python!