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Cracking Codes with Python
book

Cracking Codes with Python

by Al Sweigart
January 2018
Intermediate to advanced content levelIntermediate to advanced
416 pages
10h 40m
English
No Starch Press
Content preview from Cracking Codes with Python

1MAKING PAPER CRYPTOGRAPHY TOOLS

“The encryption genie is out of the bottle.”—Jan Koum, WhatsApp founder

Images

Before we start writing cipher programs, let’s look at the process of encrypting and decrypting with just pencil and paper. This will help you understand how ciphers work and the math that goes into producing their secret messages. In this chapter, you’ll learn what we mean by cryptog­raphy and how codes are different from ciphers. Then you’ll use a simple cipher called the Caesar cipher to encrypt and decrypt messages using paper and pencil.

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Publisher Resources

ISBN: 9781492067498