The Basics of Cryptography and Security

Abstract

In this chapter, you’ll learn the fundamental concepts of cryptography and security. I’ll define what cryptography is and what it is used for, and cover the basics of ciphers and keys and how they work. I’ll demonstrate the difference between symmetric and asymmetric cipher algorithms and show you how they can be used in concert for creating signatures and certificates. Finally, I’ll talk about cryptography and its relation to security in general.