This is the code repository for Hands-On Cryptography with Python, published by Packt.

Leverage the power of Python to encrypt and decrypt data

Cryptography is essential for protecting sensitive information, but it is often performed inadequately or incorrectly.

This book covers the following exciting features:

• Protect data with encryption and hashing
• Explore and compare various encryption methods
• Encrypt data using the Caesar Cipher technique
• Make hashes and crack them
• Learn how to use three NIST-recommended systems: AES, SHA, and RSA

If you feel this book is for you, get your copy today!

All of the code is organized into folders. For example, Chapter01.

The code will look like the following:

 alpha = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
 str_in = raw_input("Enter message, like HELLO: ")

 n = len(str_in)
 str_out = ""

 for i in range(n):
    c = str_in[i]
    loc = alpha.find(c)
    print i, c, loc, 
    newloc = loc + 3
    str_out += alpha[newloc]
    print newloc, str_out

 print "Obfuscated version:", str_out

Following is what you need for this book: Hands-On Cryptography with Python is for security professionals who want to learn to encrypt and evaluate data, and compare different encryption methods.

With the following software and hardware list you can run all code files present in the book (Chapter 1-3).

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. Click here to download it.

• Python Penetration Testing Cookbook [Packt] [Amazon]

• Python For Offensive PenTest [Packt] [Amazon]

Sam Bowne Sam Bowne has been teaching computer networking and security classes at City College of San Francisco since 2000. He has given talks and hands-on training at DEFCON, HOPE, B-Sides SF, B-Sides LV, BayThreat, LayerOne, Toorcon, and many other schools and conferences. He has done his PhD and CISSP. He is a DEF CON Black-Badge co-winner.

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