Understanding cryptography

In this section, we'll discuss why cryptology is important and some of the best cryptology tools and resources available to us. Having knowledge of the proper tools and resources will be invaluable to you as a security professional. So, let's jump in and discuss what this is all about.

Why use cryptology?

So, what does cryptography bring to the table? Well, it brings non-repudiation. This means that whoever sent a message can't later deny having altered the document. For example, "It wasn't me, Dale, I swear," to which I'll reply, "No, it was you because it was encrypted with your key."

Cryptography also brings authentication to the table. Sometimes we visit websites where it's important that we authenticate who we say we are, as well as obviously wanting to authenticate our credit card information, right? So, it's important to us, especially to those within our industry.

And, of course,...