Cracking Codes with Python: An Introduction to Building and Breaking Ciphers (Albert Sweigart)

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Cracking Codes with Python: An Introduction to Building and Breaking Ciphers (Albert Sweigart)

Make and decipher ciphers—algorithms used to create and send secret messages—while learning Python programming!

You'll learn to create, test, and hack programs that encrypt text with traditional ciphers like the transposition cipher and Vigenère cipher after taking a crash course in the fundamentals of Python programming. To secure today's online transactions, including digital signatures, email, and Bitcoin, public key cryptography is utilized. You'll start with basic programs for the reverse and Caesar ciphers and work your way up to it.

Each application comes with the whole source code and a line-by-line breakdown of how everything operates. By the conclusion of the book, you'll have mastered Python programming and the creative applications to show for it!

  • 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
  • Code (and hack!) a working example of the affine cipher, which uses modular arithmetic to encrypt a message
  • Break ciphers with techniques such as brute-force and frequency analysis

Ebook Details

About the Authors
In San Francisco, California, software engineer Albert Sweigart (often known as Al) works. His hometown is Houston, Texas. He laughs aloud while watching the squirrels in the park, which gives the impression that he is a simpleton. His earlier works include Making Games with Python and Pygame, Invent Your Own Computer Games with Python, and Hacking Secret Ciphers with Python.
Published Date / Year
(January 23, 2018)
416 pages
eBook Format

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