Book Image

Modern Cryptography for Cybersecurity Professionals

By : Lisa Bock
Book Image

Modern Cryptography for Cybersecurity Professionals

By: Lisa Bock

Overview of this book

In today's world, it is important to have confidence in your data storage and transmission strategy. Cryptography can provide you with this confidentiality, integrity, authentication, and non-repudiation. But are you aware of just what exactly is involved in using cryptographic techniques? Modern Cryptography for Cybersecurity Professionals helps you to gain a better understanding of the cryptographic elements necessary to secure your data. The book begins by helping you to understand why we need to secure data and how encryption can provide protection, whether it be in motion or at rest. You'll then delve into symmetric and asymmetric encryption and discover how a hash is used. As you advance, you'll see how the public key infrastructure (PKI) and certificates build trust between parties, so that we can confidently encrypt and exchange data. Finally, you'll explore the practical applications of cryptographic techniques, including passwords, email, and blockchain technology, along with securely transmitting data using a virtual private network (VPN). By the end of this cryptography book, you'll have gained a solid understanding of cryptographic techniques and terms, learned how symmetric and asymmetric encryption and hashed are used, and recognized the importance of key management and the PKI.
Table of Contents (16 chapters)
Section 1: Securing Our Data
Section 2: Understanding Cryptographic Techniques
Section 3: Applying Cryptography in Today's World


Nowadays, much of our data is protected using some form of encryption. A VPN provides a secure tunnel to transmit data over an insecure network. In this chapter, we defined the meaning of a VPN and outlined some examples. We saw how consumers can secure data using OpenVPN or browser-based VPNs. We also saw how network administrators can use an SSH VPN for remote configuration and learned how PuTTY provides an easy method to use SSH on a Windows machine.

We then outlined the elements of an IPsec VPN. We examined the authentication header and discovered the encapsulating security payload, and saw what's involved when selecting an operating mode. We saw the importance of the IKE process and an example of what an administrator might see when setting up an IPsec profile on a device. We then finished up with a discussion of TLS. We saw what happens in both the TLS Record and handshake protocols by covering the handshake, change cipher spec, and alert protocols; and, once...