3 CRYPTOGRAPHY DEMYSTIFIED

In the last chapter, I introduced all the main tenets within the field of cybersecurity: confidentiality, integrity, availability, authentication, authorization, and nonrepudiation. In this chapter, I further examine the field of cryptography and demonstrate how it enables several of these tenets. To help understand its importance, let's again take a look at the real-world example of Heartbleed, a security bug in the OpenSSL cryptography library, which is a widely used implementation of the TLS protocol.