Cracking Codes with Python: An Introduction to Building and

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

Learn how to program in Python while making and breaking ciphersâ€”algorithms used to create and send secret messages!Â

After a crash course in Python programming basics, youâ€™ll learn to make, test, and hack programs that encrypt text with classical ciphers like the transposition cipher and VigenÃ¨re cipher. Youâ€™ll begin with simple programs for the reverse and Caesar ciphers and then work your way up to public key cryptography, the type of encryption used to secure todayâ€™s online transactions, including digital signatures, email, and Bitcoin.

Each program includes the full code and a line-by-line explanation of how things work. By the end of the book, youâ€™ll have learned how to code in Python and youâ€™ll have the clever programs to prove it!

Youâ€™ll also learn 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
- 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

Thereâ€™s no better way to learn to code than to play with real programs. Cracking Codes with Python makes the learning fun!

Country	USA
Author	Al Sweigart
Binding	Kindle Edition
EISBN	9781593278694
Format	Kindle eBook
Label	No Starch Press
Manufacturer	No Starch Press
NumberOfPages	415
PublicationDate	2018-01-23
Publisher	No Starch Press
ReleaseDate	2018-01-23
Studio	No Starch Press

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

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