Develop a greater intuition for the proper use of cryptography. This book teaches the basics of
writing cryptographic algorithms in Python demystifies cryptographic internals and
demonstrates common ways cryptography is used incorrectly. Cryptography is the lifeblood of the
digital world's security infrastructure. From governments around the world to the average
consumer most communications are protected in some form or another by cryptography. These days
even Google searches are encrypted. Despite its ubiquity cryptography is easy to misconfigure
misuse and misunderstand. Developers building cryptographic operations into their applications
are not typically experts in the subject and may not fully grasp the implication of different
algorithms modes and other parameters. The concepts in this book are largely taught by
example including incorrect uses of cryptography and how bad cryptography can be broken. By
digging into the guts of cryptography you can experience what works what doesn't and why.
What You'll Learn Understand where cryptography is used why and how it gets misused Know what
secure hashing is used for and its basic properties Get up to speed on algorithms and modes for
block ciphers such as AES and see how bad configurations break Use message integrity and or
digital signatures to protect messages Utilize modern symmetric ciphers such as AES-GCM and
CHACHA Practice the basics of public key cryptography including ECDSA signatures Discover how
RSA encryption can be broken if insecure padding is used Employ TLS connections for secure
communications Find out how certificates work and modern improvements such as certificate
pinning and certificate transparency (CT) logs Who This Book Is For IT administrators and
software developers familiar with Python. Although readers may have some knowledge of
cryptography the book assumes that the reader is starting from scratch.
